In the present invention, a first member 100 of a side member 2 comprises: a pair of first end walls 103, 104; a first side wall 105; and a projecting strip 106 provided to the first side wall 105. Each of a pair of branch sections 105b, 105c of the first side wall 105 has an inclined portion 105e extending so as to approach a top section 123 of the projecting strip 106 as proceeding rearward from a tip 20 of the side member 2. The first side wall 105 is flush with the top section 123 at a location partway along the side member 2 in the front-rear direction X. In the first side wall 105, a first bead 107 extending in the front-rear direction X is formed in a flat section 105a flush with the top section 123.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
The present invention provides a high-strength steel sheet in which hydrogen embrittlement cracking is less likely to occur. An organic coated steel sheet (1) according to the present invention has: a steel sheet (2) which has a tensile strength of 980 MPa or more; and an organic coating layer (3) which is disposed on at least a part of the surface of the steel sheet. This organic coated steel sheet (1) is characterized in that the organic coating layer (3) contains a nitrite salt as a nitrite radical in an amount of 1-30% by mass and 0.05 g/m2 or more.
C23C 26/00 - Revêtements non prévus par les groupes
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
3.
CARRIAGE FRAME AND METHOD FOR PRODUCING CARRIAGE FRAME
A carriage frame (30) for a railway vehicle comprises a side beam (40) and a cross beam (50). The side beam (40) includes a top plate part (411), a bottom plate part (412), and an inner plate part (413) and outer plate part (414) that connect the top plate part (411) and the bottom plate part (412). The cross beam (50) passes through the inner plate part (413) and the outer plate part (414) and is joined to the inner plate part (413) and the outer plate part (414). The inner plate part (413) is divided into a first inner plate part (413a) and a second inner plate part. The first inner plate part (413a) corresponds to a region of the inner plate part (413) that is joined to the cross beam (50). The second inner plate part corresponds to other regions of the inner plate part (413) and is welded to the first inner plate part (413a). The first inner plate part (413a) and the cross beam (50) are welded at both an inner corner part (51) and outer corner part (52) in the left-right direction.
B61F 5/00 - SUSPENSIONS DES VÉHICULES FERROVIAIRES, p.ex. CHÂSSIS, BOGIES OU AMÉNAGEMENTS DES ESSIEUX DES ROUES; VÉHICULES FERROVIAIRES UTILISABLES SUR VOIES D'ÉCARTEMENT DIFFÉRENT; PRÉVENTION DES DÉRAILLEMENTS DE VÉHICULES FERROVIAIRES; COUVRE-ROUES, DÉBLAYEURS D'OBSTACLES OU DISPOSITIFS SIMILAIRES POUR VÉHICULES FERROVIAIRES - Détails de structure des bogies; Liaisons entre bogies et châssis du véhicule; Aménagements ou dispositifs pour ajuster ou permettre l'auto-ajustement des essieux des roues ou des bogies dans les courbes
4.
BLANK, METHOD FOR MANUFACTURING STRUCTURAL MEMBER, AND STRUCTURAL MEMBER
minminmin) of the first steel sheet (21). The first steel sheet (21) is configured in a manner such that the emissivity of at least one surface of the two surfaces thereof is greater than the emissivity of the two surfaces of the second steel sheet (22).
minmaxmax) of the blank (20) is in the overlap portion (241). The emissivity of surfaces (216, 226) of the steel sheets (21, 22), respectively, positioned outside the overlap portion (241) is greater than the emissivity of at least one of the other surfaces of the plurality of steel sheets.
maxmax). The adhered amount (W1, W2) of the plating layer (21b, 22b) of at least one of the first and second steel sheets (21, 22) is not more than 60g/m2, and is less than the adhered amount (W3) of the plating layer (23b) of the third steel sheet (23).
In this grain-oriented electromagnetic steel sheet, in a cross-section parallel to the rolling direction and the sheet thickness direction, the maximum value of compressive elastic stress in the rolling direction measured by using EBSD is 100 MPa or less, and, with respect to a region where the compressive elastic stress is introduced, the percentage of a region where 20 MPa or more of the compressive elastic stress in the rolling direction is introduced is 50% or more in terms of area ratio.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
H01F 1/147 - Alliages caractérisés par leur composition
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p.ex. à grains orientés
In this grain-oriented electromagnetic steel sheet, in a cross-section orthogonal to the extending direction of an irradiation mark of an energy ray and parallel to the sheet thickness direction, when a virtual line is drawn in the sheet thickness direction so as to include a position where compressive elastic stress measured by EBSD is 20 MPa or more, the degree of change in the compressive elastic stress on the virtual line is 4 MPa or less per 1 μm over the entire region in the sheet thickness direction.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
A clad sheet 1 comprises: an iron-based alloy layer 3 made of an iron-based alloy; and a nickel-containing layer 2, 4 formed on one or both surfaces of the iron-based alloy layer and comprising Ni as a main component. The total thickness is larger than 0.1 mm but not larger than 3.0 mm. Between at least one surface of the iron-based alloy layer and the nickel-containing layer, a diffusion layer having an Ni concentration of 10 mass% or higher and an Fe concentration of 10 mass% or higher is present in an average thickness of 0.50-10.0 μm. In a cross-section which includes the diffusion layer and for which the direction perpendicular to both the rolling direction and the sheet thickness direction is normal, the number density of Al-enriched grains in the diffusion layer is less than 0.50 grains/μm2, the Al-enriched grains having an Al concentration of 15 mass% or higher and an equivalent circle diameter of 250 nm or larger.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
B23K 20/00 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p.ex. revêtement ou placage
B23K 20/04 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p.ex. revêtement ou placage au moyen d'un laminoir
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
This joint structure comprises a first member having a top plate and a vertical wall, a second member joined to an axial direction end portion of the first member, and a third member joined to each of the first member and the second member, wherein: the first member has a first region portion, a second region portion and a third region portion; the first region portion has a first top plate and a first vertical wall in which the height of the vertical wall from the first top plate is a first height; the second region portion has a second top plate and a second vertical wall in which the height of the vertical wall from the second top plate is a second height; the third region portion has a third top plate and a third vertical wall connecting the first vertical wall and the second vertical wall; the height of the first top plate is lower than the height of the second top plate; and a ratio of the second height to the height from the third member to the second top plate in the second region portion is 0.4 to 0.8.
B62D 21/00 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée
B62D 21/02 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comprenant des éléments d'armature disposés longitudinalement ou transversalement
11.
BLANK, METHOD FOR MANUFACTURING STRUCTURAL MEMBER, AND STRUCTURAL MEMBER
minminmin) of the first steel sheet (21). The steel sheets (21, 22) are plated steel sheets that have base steel sheets (21a, 22a) and aluminum-based plating layers (21b, 22b). The adhesion amount (W1) of the plating layer (21b) in the first steel sheet (21) is less than the adhesion amount (W2) of the plating layer (22b) in the second steel sheet (22).
This grain-oriented electrical steel sheet has a plurality of linear strains extending in a direction of 60-120° with respect to the longitudinal direction introduced on the surface thereof, wherein: the longitudinal intervals between the plurality of adjacent linear strains are 2-10 mm; the width of the linear strains, which is the width in the direction perpendicular to the direction of extension of the linear strains, periodically increases and decreases in the direction of extension of the linear strains, the period being 200-400 μm; between adjacent linear strains from among the plurality of linear strains, the period of the change in width shifts in the direction of extension of the linear strains by an amount corresponding to 0.4-0.6 periods; the ratio between the maximum width and minimum width is 1.2-8.0; and the minimum width is 30 μm or above.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
H01F 1/147 - Alliages caractérisés par leur composition
In this hot-dip galvanized steel material, a plating layer has a chemical composition containing more than 10.0% but less than 45.0% Al, 4.0-15.0% Mg, 0.01-2.0% Si, and 0.03-1.50% Sr, with the remainder being Zn and impurities. The plating layer contains a Zn-Sr-based compound and a Zn-Sr-Si-based compound. In an element distribution profile when GDS analysis is performed from the surface of the plating layer toward a steel material, an expression (1) is satisfied where t is the thickness of the plating layer, Sr(surf) is the average value of qualitative analysis values of Sr from the surface of the plating layer to 0.05t, Sr(centre) is a qualitative analysis value in the range from 0.05t to 0.66t, and Sr(deep) is a qualitative analysis value in the range from 0.66t to t. (1): Sr(surf) < Sr(deep) < Sr(centre)
This surface-treated metal sheet comprises a metal sheet and a coating film formed on a surface of the metal sheet and having a thickness of 0.5-5.0 μm. The coating film comprises a binder resin, doped oxide particles, and a rust-preventive pigment. The content of the doped oxide particles is 5-20 vol% with respect to the coating film. The content of the rust-preventive pigment is 20-50 vol% with respect to the coating film. The ratio of the average particle diameter (B) of the doped oxide particles to the average particle diameter (A) of the rust-preventive pigment, B/A, is 0.75-4.00.
C23C 26/00 - Revêtements non prévus par les groupes
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
B32B 27/20 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers utilisant des charges, des pigments, des agents thixotropiques
16.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
AAAAA+9.00, where d is the average of the average groove-extension-direction depth of each of the plurality of grooves in units of μm, and σ is the standard deviation of the average extension-direction depth in units of μm.
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
B23K 26/364 - Gravure au laser pour faire une rainure ou une saignée, p.ex. pour tracer une rainure d'amorce de rupture
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
Provided is a steel material which combines a yield strength of 80 ksi or greater (552 MPa or greater) with excellent low-temperature toughness in an extremely low temperature environment of -70°C or below. The steel material according to the present disclosure comprises, in mass %, 0.26-0.35% C, 0.10-1.00% Si, 1.00-1.40% Mn, up to 0.015% P, up to 0.0020% S, 0.15-0.50% Cr, 0.05-0.25% Mo, 0.001-0.070% sol.Al, 0.0010-0.0080% N, and Fe and impurities as the balance, and has a yield strength of 552 MPa or higher but less than 655 MPa. In this steel material according to the present disclosure, the number of carbide grains having an equivalent circle diameter of 2 μm or larger is 10 per mm2 or less and the prior-austenite grain diameter DA and the block diameter DB satisfy relationship (1). (1): 2.5≤DA/DB≤10.0
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
18.
FACILITY, FACILITY STATE MONITORING DEVICE, FACILITY STATE MONITORING METHOD, AND PROGRAM
In an electric furnace (1), an inner peripheral surface (6a) of a side wall part (6) is composed of a refractory. Further, optical fibers (121 to 122) provided in optical fiber temperature sensors (111, 112) are embedded in a member constituting the side wall part (6).
In this automobile skeleton member, the average value HVave of the Vickers hardness measured along the longitudinal direction from an end part of the automobile skeleton member in the longitudinal direction is 200-800 Hv, the end in the longitudinal direction includes strength varying regions disposed in order of a soft region, a transition region, and a hard region along the longitudinal direction, and the VDA bending angle of the hard region according to VDA 238-100 is at least 70°.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
When the Vickers hardness of this automobile skeleton member is measured along the longitudinal direction thereof, the average Vickers hardness value HVave is 400 to 800 Hv. This automobile skeleton member includes a variable-intensity region in which a soft region, a transition region, a hard region, a transition region, and a soft region are arranged in the stated order along the longitudinal direction, and Lt/H2>{−0.0018×(4.0×HVh−297)+2.54}×Ls/H2+{0.0012×(4.0×HVh−297)−1.96}.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
B21D 22/26 - Emboutissage pour faire des objets de formes particulières, p.ex. de formes irrégulières
B21D 53/88 - Fabrication d'autres objets particuliers d'autres parties de véhicules, p.ex. capots, garde-boue
The present invention provides a metal mold capable of using hot press molding to manufacture a hot press molded article that has a region having high strength and a region having low strength. A metal mold (10) according to the present disclosure comprises an upper mold (11) and a lower mold (12). A first molding surface (110) of the upper mold (11) includes a first rapid cooling region (1A) and a first slow cooling region (1B). A second molding surface (120) of the lower mold (12) includes a second rapid cooling region (2A) and a second slow cooling region (2B). The contact area percentage of the first rapid cooling region (1A) is 95% or more. The contact area percentage of the second rapid cooling region (2A) is 95% or more. The contact area percentage of the first slow cooling region (1B) is 9 to 33%. The contact area percentage of the second slow cooling region (2B) is 9 to 33%.
This plated steel material comprises a steel material and a plating layer disposed on a surface of the steel material. The plating layer has a predetermined chemical composition, and the diffraction intensity of the plating layer obtained from X-ray diffraction measurement results satisfies a predetermined formula.
This grain-oriented electrical steel sheet has a base steel sheet and an insulating coating film that is formed on the surface of the base steel sheet. The insulating coating film has: an intermediate layer that is formed on the base steel sheet side and contains a crystalline metal phosphate salt; and a tension coating layer that is formed on the surface side of the insulating coating film. In a cross-section of the intermediate layer along the thickness direction, when the interface between the base steel sheet and the intermediate layer is observed at a magnification of 5,000 times with a scanning electronic microscope, the ratio of the interface length L to the observation image width W is 100.0% to 120.0%.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
This grain-oriented electromagnetic steel sheet has a base material steel sheet and an insulating coating film formed on the surface of the base material steel sheet, wherein: the base material steel sheet has a flat section and a groove section extending in the direction of 45-135° with respect to the rolling direction; the depth of the groove section is 10-30 µm; the width of the groove section is 10-200 µm; the insulating coating film has an intermediate layer that is formed on the base material steel sheet side, has a thickness of 0.1-15.0 µm, and contains a crystalline phosphate metal salt, and a tension coating layer formed on the surface side of the insulating coating film; and the base material steel sheet is covered with the insulating coating film having the intermediate layer and the tension coating layer at an area ratio of 60% or more of the groove section.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
This grain-oriented electrical steel sheet has a base steel sheet and an insulating coating film that is formed on the surface of the base steel sheet. The insulating coating film has: an intermediate layer that is formed on the base steel sheet side and contains a crystalline metal phosphate salt and at least one of amorphous silica, an inorganic filler, and a metal oxide; and a tension coating layer that is formed on the surface side of the insulating coating film. The average particle diameter of the at least one of the amorphous silica, the inorganic filler, and the metal oxide is 10-500 nm.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
Provided is a duplex stainless steel material having excellent general corrosion resistance and pitting corrosion resistance even in a supercritical corrosive environment. A duplex stainless steel material according to the present disclosure has the chemical composition described in the specification, wherein Fn1 defined by formula (1) satisfies 40.0 or more, and has a microstructure comprising ferrite and austenite. In the duplex stainless steel material according to the present disclosure, the total number density of coarse Mn sulfides having an equivalent circle diameter of 1.0 μm or more and coarse Ca sulfides having an equivalent circle diameter of 2.0 μm or more is 0.50/mm2or less, and the total number density NDA/mm2of the coarse Mn sulfides and the coarse Ca sulfides in the ferrite and the total number density NDG/mm2 of the coarse Mn sulfides and the coarse Ca sulfides in the austenite satisfy formula (2). (1): Fn1 = Cr + 3.3(Mo + 0.5W) + 16N + 2Ni + Cu + 2Co + 10Sn (2): NDA/NDG < 0.50
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
27.
MgO POWDER, MgO SLURRY, PRODUCTION METHODS OF THOSE, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
C01F 5/06 - Magnésie par décomposition thermique des composés du magnésium
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
28.
MgO POWDER, MgO SLURRY, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
C01F 5/06 - Magnésie par décomposition thermique des composés du magnésium
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
This plated steel material comprises a steel material and a plating layer disposed on the surface of the steel material. The plating layer has a prescribed chemical composition, and the diffraction intensity of the plating layer as obtained from X-ray diffraction measurement results satisfies a prescribed relational expression.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
This hot-stamped object has a predetermined chemical composition, and when a region ranging, in the thickness direction from the surface, from a position corresponding to 1/8 the thickness to a position corresponding to 3/8 the thickness is defined as a 1/4 depth position, the microstructure at the 1/4 depth position comprises, in areal proportion, 80.0% or more of martensite and 0.0-5.0%, excluding 5.0%, of retained austenite. In the microstructure at the 1/4 depth position, the number density of iron-based carbide grains present in the martensite and have a circle-equivalent diameter exceeding 0.5 μm is less than 0.050 grains/μm2 and the average distance between any of the iron-based carbide grains and another iron-based carbide grain closest thereto is 3.0 μm or greater. In the microstructure at the 1/4 depth position, the prior austenite grain size is 20.0 μm or less.
This grain-oriented electromagnetic steel sheet comprises a base material steel sheet and an insulating coating formed on the surface of the base material steel sheet. The base material steel sheet comprises a flat section and a groove section that extends in a direction at a 45–135° angle to a rolling direction; the depth of the groove section is 10–30 μm; and the width of the groove section is 10–200 μm. The insulating coating comprises: an intermediate layer that is formed on the base material steel sheet side, that includes a crystalline metal phosphate and that has a thickness of 0.1–15.0 μm; and a tensile coating layer that is formed on the surface side of the insulating coating. For at least 50% of the groove section, by area ratio, the base material steel sheet is covered by the insulating coating which includes the tensile coating layer and the intermediate layer that has a thickness of 0.1–9.0 μm.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
This grain-oriented electromagnetic steel sheet includes a parent material steel sheet and an insulating coating film that is formed on the surface of the parent material steel sheet. The insulating coating film includes an intermediate layer that includes a crystalline metal phosphate and is formed on the parent material steel sheet side and a tension coating film layer that is formed on the surface side of the insulating coating film. The porosity of the intermediate layer is less than 40%.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
This grain-oriented electrical steel sheet comprises a base steel sheet and an insulating coating film formed on the surface of the base steel sheet, wherein the insulating coating film comprises an interlayer formed on the base steel sheet side and containing a crystalline metal phosphate and a tension coating film layer formed as a surface-side layer of the insulating coating film. The crystalline metal phosphate has a board shape and an average grain diameter of 0.5-3.0 μm.
C25D 9/10 - Revêtement électrolytique autrement qu'avec des métaux avec des matières inorganiques par des procédés cathodiques sur le fer ou l'acier
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
The present invention provides a method for manufacturing a press-molded article, the method comprising inserting a blank (200) between a die (20) and a blank holder (30) and pressing the blank (200) in a press direction (P) by means of a punch (10). When viewed from the press direction (P), an edge (24) of the die (20) includes a curved part (241) and an edge (201) of the blank (200) includes a curved part (211). The interval (w) between the blank edge curved part (211) and the edge (24) of the die (20) differs between one end portion (211a) and the other end portion (211b) of the blank edge curved part (211). The blank holder (30) holds a portion of the edge (201) of the blank (200) together with the die (20). The interval (d) between an edge (34) of the blank holder (30) and the edge (201) of the blank (200) held between the blank holder (30) and the die (20) changes along the edge (201) of the blank (200). The interval (d) is the largest at the blank edge curved part (211).
B21D 19/08 - Mise en forme ou autres traitements des bords, p.ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p.ex. de mors d'étaux
B21D 22/22 - Emboutissage comportant des dispositifs pour maintenir les bords des flans
B21D 22/26 - Emboutissage pour faire des objets de formes particulières, p.ex. de formes irrégulières
Provided is a steel material which includes prior-austenite grains having a crystal grain diameter exceeding 5.0 μm but has high strength and excellent hydrogen embrittlement resistance. The steel material according to the present disclosure has a chemical composition comprising, in terms of mass%, 0.20-0.45% C, 0.05-1.50% Si, 0.01-1.00% Mn, up to 0.030% P, up to 0.0100% S, 0.40-1.10% Cr, 0.40-1.30% Mo, 0.01-0.30% V, 0.005-0.100% Nb, 0.001-0.030% Ti, 0.005-0.100% Al, 0.0005-0.0050% B, up to 0.0100% N, up to 0.0050% O, and Fe and impurities as the remainder. The prior-austenite grains have a crystal grain diameter GS of 5.0-30.0 μm, excluding 5.0 μm, and the steel material has a yield strength σ of 862-965 MPa, a yield point drop Δσ of 40 MPa or greater, and a yield point elongation Δε of 1.5% or higher.
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
37.
ROTOR CORE, ROTOR, ROTARY ELECTRIC MACHINE, AND DESIGN METHOD FOR ROTOR CORE
A rotor core (31) has: a front bridge (37f) provided between the outer peripheral surface (31a) of the rotor core (31) and a front flux barrier (35f); and a rear bridge (37r) provided between the outer peripheral surface (31a) of the rotor core (31) and a rear flux barrier (35r). The relative position of the center position θr of the rear bridge (37r) with respect to a rear reference position θsr of the rear flux barrier (35r) is positioned rotationally backward than the relative position of the center position θf of the front bridge (37f) with respect to the front reference position θsf of the front flux barrier (35f). The width Wf of the front bridge (37f) and the width Wr of the rear bridge (37r) are different from each other.
A bumper beam (1) comprises a first member (2) and a second member (3). The first member (2) includes: first vertical walls (22, 22a, 22b); a first top plate (21); and first flanges (23a, 23b). The second member (3) includes: second vertical walls (32a, 32b); a second top plate (31); and second flanges (33a, 33b). The second vertical walls (32a, 32b) are disposed inside the first member (2), and face the first vertical walls (22, 22a, 22b) so as to be respectively close to the same. The second top plate (31) includes a protrusion (311) that protrudes toward the side opposite to the first top plate (21). The second flanges (33a, 33b) are respectively joined to the first flanges (23a, 23b). The tensile withstand load of the first top plate (21) is greater than the tensile withstand load of the first vertical walls (22, 22a, 22b).
B60R 19/04 - Pare-chocs, c. à d. éléments pour recevoir ou absorber les chocs pour protéger les véhicules ou dévier les chocs provenant d'autres véhicules ou objets formés de plusieurs sections
A bumper beam (1) is provided with a first member (2), a second member (3), and an intermediate plate (4). The first member (2) includes vertical walls (22, 22a, 22b), a top plate (21), and flanges (23a, 23b). The top plate (21) connects the vertical walls (22, 22a, 22b). The flanges (23a, 23b) are connected to the vertical walls (22, 22a, 22b) on the side opposite from the top plate (21) and protrude outward from the vertical walls (22, 22a, 22b). The second member (3) faces the top plate (21) and is joined to the flanges (23a, 23b). The intermediate plate (4) is disposed in a space formed by the members (2, 3). The intermediate plate (4) faces the second member (3) and is joined to the vertical walls (22, 22a, 22b). The endurable tensile load of the top plate (21) is greater than the endurable tensile load of the vertical walls (22, 22a, 22b).
B60R 19/04 - Pare-chocs, c. à d. éléments pour recevoir ou absorber les chocs pour protéger les véhicules ou dévier les chocs provenant d'autres véhicules ou objets formés de plusieurs sections
A structural member (100) includes a curved region (40) that curves in a concave shape on the inside in a plan view. The structural member (100) is provided with a first member (21), a second member (22), and a welded part (33). Each of the first member (21) and the second member (22) includes a top plate (211, 221), a ridge line part (214, 224), and a vertical wall (217, 227). The vertical wall (227) of the second member (22) overlaid on the vertical wall (217) of the first member (21) from the inside. The welded part (33) welds the vertical walls (217, 227). At least a part of the vertical wall (217, 227) is disposed in the curved region (40). When viewed in a cross section in the curved region (40), the vertical wall (227) includes an inclined part (227b) that is inclined relative to an overlapping surface (227d) of the vertical wall (227) with respect to the vertical wall (217).
B29C 70/00 - Façonnage de matières composites, c. à d. de matières plastiques comprenant des renforcements, des matières de remplissage ou des parties préformées, p.ex. des inserts
B32B 5/28 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse imprégnée de matière plastique ou enrobée dans une matière plastique
B32B 7/12 - Liaison entre couches utilisant des adhésifs interposés ou des matériaux interposés ayant des propriétés adhésives
B32B 15/04 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique
[Problem] To further improve the thermal yellowing resistance of a coating layer even when the coating layer contains a vanadium compound. [Solution] A surface-treated steel sheet according to the present invention has: a Zn-containing plating layer disposed on the surface of a base steel sheet; a primer coating layer that is disposed on the Zn-containing plating layer and contains at least a vanadium compound; and an upper coating layer disposed on the primer coating layer, wherein the average thickness of the primer coating layer is in the range of 3.0-15.0 μm, the average thickness of the upper coating layer is in the range of 7.0-25.0 μm, the Vickers hardness of the upper coating layer is in the range of 25-70 Hv, the Vickers hardness of the primer coating layer is 20 Hv or less, and the difference between the Vickers hardness of the upper coating layer and the Vickers hardness of the primer coating layer is in the range of 5-50 Hv.
[Problem] To improve thermal yellowing resistance of a coating film layer even when the coating film layer contains a vanadium compound. [Solution] A surface-treated steel sheet according to the present invention comprises a base material steel sheet, a Zn-Al-Mg-containing plating layer, a primer coating film layer that contains at least a vanadium compound, and an upper surface coating film layer, wherein in results of analyzing the primer coating film layer via GDS, the strength of vanadium at an interface on the upper surface coating film layer side of the primer coating film layer is not more than 50% of the maximum strength of vanadium in the primer coating film layer, and, in a range up to 1 μm toward the upper surface coating film layer side of the primer coating film layer from an interface of the primer coating film layer on the Zn-Al-Mg-containing plating layer side, the average strength of vanadium exhibits a prescribed ratio or greater with respect to the average strength of magnesium, the average strength of aluminum, and the average strength of zinc.
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
C23C 26/00 - Revêtements non prévus par les groupes
44.
INSULATING COATING FILM TREATMENT LIQUID FOR GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
2222222 ratio has been adjusted, without adding a chromic acid salt, and a metal phosphate salt(s) of one or more metals selected from Al, Fe, Mg, Mn, Ni, Zn, Co, Mo, V, W, and Zr.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
H01F 1/147 - Alliages caractérisés par leur composition
45.
INSULATING FILM PROCESSING LIQUID FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEETS, METHOD FOR MANUFACTURING SAME, AND GRAIN-ORIENTED ELECTRICAL STEEL SHEET MANUFACTURING METHOD
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
This grain-oriented electrical steel sheet comprises: a base material steel sheet; a glass coating film that is formed on the surface of the base material steel sheet; and an insulating coating film that is formed on the surface of the glass coating film. The base material steel sheet has a thickness of 0.15 mm to 0.35 mm. The insulating coating film contains a metal phosphate, amorphous silica, and alkaline earth metal elements excluding magnesium. Relative to 100 parts by mass of the metal phosphate, the amount of the amorphous silica is 50 parts by mass to 150 parts by mass and the total amount of the alkaline earth metal elements is 1.0 part by mass to 20 parts by mass. The moisture content of the insulating coating film is 0% by mass to 0.04% by mass.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C23C 22/22 - Orthophosphates contenant des cations de métaux alcalino-terreux
This cold-rolled steel sheet has a predetermined chemical composition, and when the sheet thickness in units of millimeters is defined as t and a position range of t/8 to 3t/8 from the surface in the sheet thickness direction is defined as a t/4 position, a microstructure at the t/4 position contains, in terms of volume ratio, at least 95% of martensite. In this microstructure, the volume ratio of tempered martensite is 95% or less, the prior austenite grain size is 7.0 μm or less, and the grain boundary segregation degree of Mn is 2.0 or less.
This method for manufacturing press-molded articles (10, 50) comprises: a preparing step for preparing materials (40, 80); a first molding step for molding the materials (40, 80) by using first molds (21, 61) and second molds (22, 62); and a second molding step for molding the materials (40, 80) by using third molds (31, 71) and fourth molds (32, 72) after the first molding step. When the curvature radius of shoulder parts (212, 612) of the first molds (21, 61) is defined as R1, an angle formed by the side surfaces (213, 613) and the top surfaces (211, 611) is defined as θ1, a line length of the top surfaces (211, 611) from a reference point (P) to the shoulder parts (212, 612) is defined as L1, the curvature radius of the shoulder parts (312, 712) of the third molds (31, 71) is defined as R2, the angle formed by the side surfaces (313, 713) and the top surfaces (311, 711) is defined as θ2, and a line length of the top surfaces (311, 711) from the reference point (P) to the shoulder parts (312, 712) is defined as L2, R2/R1 < 1.0, θ2/ θ1 > 1.0, and 0.0 < L2-L1 ≦ 4.0 are satisfied.
B21D 22/26 - Emboutissage pour faire des objets de formes particulières, p.ex. de formes irrégulières
B21D 5/01 - Cintrage des tôles le long de lignes droites, p.ex. pour former un pli simple entre des marteaux et des enclumes ou butées
B21D 19/08 - Mise en forme ou autres traitements des bords, p.ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p.ex. de mors d'étaux
This sintered ore production method comprises: a step for forming a lower-stage raw-material-filled layer (10) by charging a lower-stage blended granular raw material into a sintering machine (100); a step for forming an upper-stage raw-material-filled layer(20) by charging an upper-stage blended granular raw material on the lower-stage raw-material-filled layer; a step for igniting the surface of the lower-stage raw-material-filled layer and the surface of the upper-stage raw-material-filled layer, respectively, and introducing an oxygen-containing gas into the lower-stage raw-material-filled layer and the upper-stage raw-material-filled layer through downward-suctioning (6) under atmospheric pressure. At least a portion of the gas suctioned downward from the surface side of the upper-stage raw-material-filled layer after the completion of ignition of the upper-stage raw-material-filled layer is made to be an oxygen-enriched gas with an oxygen concentration of 26 vol% to 46 vol%. A region in which the oxygen-enriched gas is supplied is a region including a part of a first half section, when in the longitudinal direction of the sintering machine, a middle position of a section from immediately after an outlet (X) of an upper-stage ignition furnace (2C) to an ore discharge end (Y) is defined as a middle position (Z), and a section from immediately after the outlet (X) of the upper-stage ignition furnace to the middle position (Z) is defined as the first half section.
Provided is a steel sheet with excellent high temperature strength. The steel sheet according to the present disclosure has a chemical composition composed of C: 0.040 to 0.070%, Si: more than 0 to 0.10%, Mn: 0.20 to 0.40%, P: more than 0 to 0.030%, S: more than 0 to 0.030%, Sol. Al: 0.005-0.100%, N: more than 0% to 0.0150%, B: 0.0001 to 0.0030%, Ti: 0 to 0.010%, Nb: 0 to 0.010%, Cu: 0 to 0.5%, Ni: 0 to 0.5%, Cr: 0 to 0.3%, and Sn: 0 to 0.05%, in terms of mass%, wherein ferrite is the main phase, the grain size number is 11.0 or more, the sheet thickness is 0.15-1.00 mm, the yield strength at room temperature is 220-500 MPa, the tensile strength is 330 to 550 MPa; the total elongation is 20.0% or more; the aging index AI is 50.0 MPa or more, and the ratio of the tensile strength at 300°C to the tensile strength at room temperature is 0.90 or more.
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
C21D 8/04 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes pour produire des produits plats ou des bandes pour l'emboutissage profond
C21D 9/48 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles tôles embouties
51.
ROTOR CORE, ROTOR, ROTARY ELECTRIC MACHINE, AND METHOD FOR DESIGNING ROTOR CORE
A rotor core (31) is formed with a plurality of third flux barriers (37) provided corresponding to at least one magnetic pole (33) among a plurality of magnetic poles (33). In the rotor core (31), a first insertion hole (34f) is formed into which a permanent magnet (32) (front magnet (32f)) is inserted, said permanent magnet (32) being disposed toward the front F side among the respective magnetic poles (33). The third flux barriers (37) are each provided at a position facing a first side surface on the radially outer side of the rotor core (31) among the side surfaces facing the short direction of the first insertion hole (34f) and are connected to the first side surface.
Provided is a steel material having both high strength of at least 125 ksi and excellent low-temperature toughness. This steel material contains, in mass%, 0.15-0.45% of C, 0.05-1.00% of Si, 0.05-1.00% of Mn, 0.030% or less of P, 0.0050% or less of S, 0.005-0.100% of Al, 0.30-1.50% of Cr, 0.20-2.00% of Mo, 0.002-0.030% of Ti, 0.002-0.100% of Nb, 0.0005-0.0040% of B, 0.0100% or less of N, and 0.0040% or less of O, with the remainder comprising Fe and impurities, and has a yield strength of 862-1034 MPa. In the steel material, the number density of Al oxides having a major axis of at least 5.0 μm is less than 30 counts/200 mm2, and the number density of Si oxides having a major axis of at least 5.0 μm is 5 counts/200 mm2 or less.
C22C 38/54 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du bore
B22D 11/00 - Coulée continue des métaux, c. à d. en longueur indéfinie
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
53.
STEEL SHEET/FIBER-REINFORCED PLASTIC COMPOSITE MATERIAL, AND AUTOMOTIVE MEMBER
B32B 5/02 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par les caractéristiques de structure d'une couche comprenant des fibres ou des filaments
B29C 70/06 - Façonnage de matières composites, c. à d. de matières plastiques comprenant des renforcements, des matières de remplissage ou des parties préformées, p.ex. des inserts comprenant uniquement des renforcements, p.ex. matières plastiques auto-renforçantes des renforcements fibreux uniquement
B32B 5/28 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse imprégnée de matière plastique ou enrobée dans une matière plastique
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
54.
PRESS MOLDING DEVICE AND METHOD FOR PRODUCING PRESS MOLDED ARTICLE
A press molding device (100, 100A, 100B, 100C, 100D) is provided with a punch (10, 10D), blank holders (30, 30B, 30C), and dies (20, 20C). Each punch shoulder (12) includes a curved part (121). Each curved part (121) curves concavely toward the inside of the punch (10, 10D) when viewed from a punch side surface (13). The blank holders (30, 30B, 30C) and the dies (20, 20C) are disposed adjacent to the curved part (121) when viewed from the pressing direction (P). When viewed from the pressing direction (P), at least one of a pressing surface (21) and a holder top surface (31) of the dies (20, 20C) has a smaller length along the extending direction of the punch shoulder (12) than the punch shoulder (12).
The present invention provides a steel material which achieves excellent cold forgeability, and which enables a steel component to achieve excellent fatigue strength if the steel component is obtained by subjecting this steel material to cold forging and aging heat treatment. A steel material according to the present disclosure contains, in mass %, 0.03% to 0.25% of C, 0.05% to 0.50% of Si, more than 0.70% but not more than 2.50% of Mn, 0.035% or less of P, 0.050% or less of S, 0.001% to 0.100% of Al, 0.05% to 0.70% of Cr, more than 0.10% but not more than 0.40% of V and 0.002% to 0.015% of N, and in the microstructure thereof, the area ratio of polygonal ferrite is 30% to 90%, the area ratio of martensite is 5% or less, and the balance is made up of bainite and/or pearlite. In the polygonal ferrite, the number density of VCr precipitates having a circle equivalent diameter of 5 nm to 100 nm is 1,000 to 5,000 per μm3.
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
56.
MAGNETIC DOMAIN STRUCTURE ANALYSIS DEVICE, MAGNETIC DOMAIN STRUCTURE ANALYSIS METHOD, PROGRAM, METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, AND IRON CORE
Provided is a magnetic domain structure analysis device comprising: a magnetic domain image acquisition unit that acquires a magnetic domain image by imaging a grain-oriented electromagnetic steel sheet; and a magnetic domain width measurement unit that measures the width of the magnetic domain on the basis of the magnetic domain image acquired by the magnetic domain image acquisition unit. The magnetic domain width measurement unit generates a plurality of filter kernels having different spatial sizes by multiplying the complex one-dimensional Gabor filter by A times in a spatial direction corresponding to a direction orthogonal to the rolling direction of the grain-oriented electromagnetic steel sheet and 1/A in the amplitude direction, applies the plurality of filter kernels to the magnetic domain images, respectively, calculates the absolute value of the filter output for each filter kernel, and derives the width of the magnetic domain on the basis of the spatial size of the filter kernel having the largest absolute value among the plurality of filter kernels.
G01N 27/72 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques
G01R 33/10 - Tracé par points de la répartition de champ
G01R 33/12 - Mesure de propriétés magnétiques des articles ou échantillons de solides ou de fluides
57.
INSULATING FILM TREATMENT LIQUID FOR GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
60.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR FORMING INSULATING COATING FILM
This grain-oriented electrical steel sheet comprises: a base material steel sheet; a glass coating film that is formed on the surface of the base material steel sheet; and an insulating coating film that is formed on the surface of the glass coating film. The base material steel sheet has a thickness of 0.15 mm to 0.35 mm. The insulating coating film contains a metal phosphate, amorphous silica, and one or more oxo acid compounds selected from among those of tungsten, vanadium, molybdenum and zirconium. Relative to 100 parts by mass of the metal phosphate, the amount of the amorphous silica is 30 parts by mass to 150 parts by mass and the total amount of the oxo acid compounds is 1.0 part by mass to 50 parts by mass. The moisture content of the insulating coating film is 0% by mass to 0.04% by mass.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C23C 22/42 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p.ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des molybdates, des tungstates ou des vanadates et des phosphates
This non-oriented electromagnetic steel sheet contains, in mass %, C: 0.0100% or less, Si: 1.50-4.00%, sol. Al: 0.0001-1.00%, S: 0.0100% or less, N: 0.0100% or less, and one or more selected from the group consisting of Mn, Ni, and Cu: total of 2.50-5.00%. When, in mass%, Mn content is taken to be [Mn], the Ni content is taken to be [Ni], the Cu content is taken to be [Cu], the Si content is taken to be [Si], the sol. Al content is taken to be [sol. Al], and the P content is taken to be [P], the non-oriented electromagnetic steel sheet has a chemical composition that satisfies (2 × [Mn] + 2.5 × [Ni] + [Cu]) - ([Si] + 2 × [sol. Al] + 4 × [P]) ≥ 1.50%. A411-011 is 15.0% or more, B50D is 1.70T or more, and W10D/400D is 10.4 W/kg or less.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
LTLC HTLCLTHTLTLTLTLCHTHT - 350], the test piece being collected from a thickness center position of the Cr-Ni alloy tube so that the longitudinal direction of the test piece is parallel to the tube axial direction.
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 30/06 - Alliages contenant moins de 50% en poids de chaque constituant contenant du zinc
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
63.
NICKEL CLAD PLATE AND METHOD FOR MANUFACTURING SAME
The present invention provides a nickel clad plate and a method for manufacturing the same, the nickel clad plate comprising a metal base material layer and a nickel material layer laminated onto one or both surfaces of the metal base material layer, wherein a Vickers hardness measured from the surface of the nickel material layer with a test force of 0.2 N is greater than a Vickers hardness measured from the surface of the nickel material layer with a test force of 9.8 N by a difference of 30.0 or more.
B23K 20/04 - Soudage non électrique par percussion ou par une autre forme de pression, avec ou sans chauffage, p.ex. revêtement ou placage au moyen d'un laminoir
C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
Provided is a steel plate that obtains excellent drawing processability and can suppress the occurrence of burrs during trimming. The steel plate according to the present embodiment contains, in mass%, C: 0.010-0.100%, Si: 0.350% or less, Mn: 1.00% or less, P: 0.070% or less, S: 0.025% or less, sol. Al: 0.005-0.100%, N: 0.0060% or less, and B: 0.50-2.50 times the N content, with the balance being Fe and impurities, and the number density ND of cementite having an area of 0.30 μm2or more is 1150/m2to less than 7000/mm2.
C21D 9/48 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles tôles embouties
This roof panel structure for an automobile includes: a plate-shaped outer panel; a pair of side rails that extend in the longitudinal direction of a vehicle body and are attached to the outer panel; a first reinforcement and a second reinforcement that extend in the width direction of the vehicle body and have panel facing parts which connect the pair of side rails to each other and which are disposed facing the lower surface of the outer panel; and a stiffening member joined to the lower surface of the outer panel by a stiffening member adhesive part. The outer surface of the stiffening member makes surface contact with the first reinforcement and the second reinforcement, and is thereby supported by the same.
This method for manufacturing a metal member (20) comprises: a step for preparing a starting material (40); and a step for placing the starting material (40) between a punch (31) including a punch top surface (311), a punch shoulder (312), and a punch side surface (313), and a die (32) including a die flange surface (321), a die shoulder (322), and a die side surface (323), bringing the punch (31) and the die (32) close to one another, and sandwiching and compressing the starting material (40) between the punch shoulder (312) and the die shoulder (322), thereby forming a thin-walled portion (231) in the starting material (40). Parts of the punch shoulder (312) and the die shoulder (322) that form the thin-walled portion (231) in the starting material (40) have an arc shape or a tapered shape in a cross-sectional view, and are configured so as to satisfy Cpd ≤ 1.00, 0.10×Cpd ≤ w1, and w1 < w2.
A mold (100) comprises a punch (10), a die (40), and a pad (20). The punch (10) includes shoulder portions (12), a top surface (11), and side surfaces (13). Each shoulder portion (12) includes a curved portion (121) and extensions (122, 123). The curved portion (121) has an arc shape in a plan view of the punch (10). In the plan view of the punch (10), the extension (122) extends from one end of the curved portion (121), and the extension (123) extends from the other end of the curved portion (121). The top surface (11) is continuous with the shoulder portions (12) on the outer side of the curve of the curved portions (121). The side surfaces (13) are each connected to the top surface (11) with the shoulder portion (12) interposed therebetween. With reference to the extension (123) and an extension line (Lb) thereof, the pad (20) faces the top surface (11) on the opposite side from the curved portion (121) and does not face the top surface (11) on the curved portion (121) side.
Provided are a steel sheet and a method for manufacturing same. The steel sheet has a predetermined chemical composition and has a metallic microstructure containing, in area%, 60.0-85.0% of martensite, 10.0-30.0% of granular bainite, in which the maximum misorientation is 3.5° or less at 0.1 μm intervals and the in-grain misorientation is at least 10° within a grain surrounded by grain boundaries having a misorientation of at least 15°, and 20.0% or less of ferrite, wherein the average spacing between grains of the granular bainite is 50.0 μm or less.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
69.
HULL STRUCTURE MANUFACTURING METHOD, HULL STRUCTURE DESIGN METHOD, AND HULL STRUCTURE DESIGN PROGRAM
NATIONAL INSTITUTE OF MARITIME, PORT AND AVIATION TECHONOLOGY (Japon)
NIPPON STEEL CORPORATION (Japon)
Inventeur(s)
Yamada, Yasuhira
Okawa, Teppei
Oda, Naoki
Abrégé
[Problem] To provide an index-based hull structure manufacturing method, design method and design program with which it is possible to prevent a breach of a cargo oil tank and oil outflow, or to reduce the amount of outflow, in the event of running aground. [Solution] The present invention includes: a step for selecting a steel plate to be applied to a hull structure 10 of a ship; a step for quantifying a stress-strain relationship of the steel plate; a step for using the stress-strain relationship to execute a grounding analysis of the hull structure 10 to which the steel plate is applied, to obtain a calculated value of a critical grounding speed; a step for determining a required value of the critical grounding speed; and a step for evaluating a grounding resistance of the hull structure 10 on the basis of the calculated and required values of the critical grounding speed. The hull structure 10 for which it has been determined, from the evaluation result of the grounding resistance, that the required value is satisfied, is manufactured.
B63B 71/00 - Conception des navires; Prévision de leurs performances
B63B 71/10 - Conception des navires; Prévision de leurs performances par simulation par ordinateur, p.ex. par la méthode des éléments finis [MEF] ou la dynamique des fluides numérique [DFN]
B63B 73/00 - Construction ou assemblage de navires ou de structures marines, p.ex. coques ou plateformes en pleine mer
This structural member for an automobile body comprises: a hat-shaped member having a top plate part, a pair of side wall parts, and a pair of flange parts; and a joining member having a pair of joining parts and a top plate facing part. Two or more longitudinal-direction beads are formed on at least one of the top plate part and the top plate facing part. A plurality of height-direction beads are formed on the pair of side wall parts. Each of two outermost longitudinal-direction beads of the two or more longitudinal-direction beads includes a first bead side wall, a second bead side wall, and a bead bottom wall, and satisfies the relationships of θ3 ≥ 120 degree and w1 < w2 + w3 in a cross-section perpendicular to the longitudinal direction, where w1 is the length of the first bead side wall, w2 is the length of the second bead side wall, w3 is the length of the bead bottom wall, and θ3 is the exterior angle formed by the second bead side wall and the bead bottom wall.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
max 0 0 ) of the top plate (10) on both ends of the structural component (100, 200, 300, 400). When the curved area (30) is viewed in the transverse cross section, the total length of the two side walls (21, 22) is greater than the width of the top plate (10).
A structural component (100, 200) is provided with a top plate (10), side walls (21, 22), and flanges (31, 32). The flanges (31, 32) protrude from at least one of the side walls (21, 22). The structural component (100, 200) includes a curved area (40). When viewed from the side walls (21, 22), the curved area (40) curves with the top plate (10) side thereof being on the inner side of the curve and with the opposite side to the top plate (10) being on the outer side of the curve. In the curved area (40), the side walls (21, 22) are connected by the top plate (10) on the inside of the curve. The curved area (40) is open on the outside of the curve. The flanges (31, 32) extend along the curved area (40) on the outside of the curve through a bottom part (41) of the curved area (40). The protruding length of the flanges (31, 32) at the bottom part (41) is smaller than the protruding length of the flanges (31, 32) at both ends of the structural component (100, 200).
Provided is an alloy material that exhibits a high creep strength, an excellent resistance to weld hot cracking, and an excellent hot workability. An alloy material according to the present disclosure contains, in mass%, C: 0.050-0.100%, Si: 1.00% or less, Mn: 1.50% or less, Cr: 19.00-23.00%, Ni: 30.00-35.00%, N: 0.010% or less, Al: 0.15-0.70%, Ti: 0.15-0.70%, B: 0.0001-0.0030%, Nb: 0.0010-0.5000%, Mo: 0.01-1.00%, and Ca: 0.0001-0.0200%, with the balance being Fe and impurities; satisfies formula (1) and formula (2); and further satisfies formula (3) when B ≤ 0.0010%. (1): 0.60 < Al + Ti < 1.20 (2): 3.3 - 41C - Si + 2Mo + 3Ti + 245B - 12Nb ≤ 2.00 (3): 0.4 + 67C + 1.3Si + 5.5Mo + 5.2Ti + 13.4Nb ≤ 8.25
22 is less than 0.4%. The plating layer has a prescribed second chemical composition. The plating layer includes an Al-Fe interface alloy layer that is in contact with the steel sheet surface. The thickness of the Al-Fe interface alloy layer is 1.0-3.0 μm.
[Problem] To further improve adhesion and corrosion resistance of a film after mold processing. [Solution] A surface-treated steel sheet according to the present invention comprises: a plating layer that is positioned on at least one surface of a steel sheet, and that contains zinc and nickel; a first composite layer that is positioned between the steel sheet and the plating layer and that contains Fe, Zn, and Ni; a chromium-containing composite layer that is positioned on the plating layer and that contains at least Cr; and a coating film that is positioned on the chromium-containing composite layer and that contains an epoxy resin, an isocyanate resin, and silica particles. The adhesion amount of the plating layer is 2-50 g/m2per side. The chromium-containing composite layer includes a second composite layer that is positioned on the plating layer side and that contains Cr, Zn, and Ni, and a third composite layer that is positioned on the coating film side and that contains Si, N, and a Cr. The adhesion amount of the chromium-containing composite layer is 10-200 mg/m2, in terms of metal Cr equivalent. The thickness of the coating film is 0.5-2.0 μm.
C25D 5/26 - Dépôt sur des surfaces métalliques auxquelles un revêtement ne peut être facilement appliqué sur des surfaces de fer ou d'acier
B32B 15/092 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique comprenant des résines époxy
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C25D 3/56 - Dépôt électrochimique; Bains utilisés à partir de solutions d'alliages
This wire rod has a predetermined chemical composition, in which: when the diameter of the wire rod is noted as D, the metal structure in a 1/4 D part, which is a part found in a cross section taken perpendicular to the length direction of the wire rod, at the depth of 1/4 D from the surface of the wire rod, includes bainite which accounts for an area ratio of 70% or more; the ratio of 0.05% yield strength to tensile strength (0.05% yield strength/tensile strength) is 0.72-0.40 × (C%) or more, where (C%) is the content of C in mass%; and a value obtained by dividing the standard deviation of Vickers hardness in a cross section perpendicular to the length direction of the wire rod by the average value of Vickers hardness is 0.150 or less.
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
Provided is a surface-treated steel sheet comprising a Zn-Al-Mg plated steel sheet having a plating amount of 20-60 g/m2 per one surface and a coating film disposed on at least one main surface of the Zn-Al-Mg plated steel sheet, wherein the coating film comprises a binder resin, doped zinc oxide particles, and a rust preventive, the coating film has an average film thickness of 0.5-3 μm, the doped zinc oxide particles have an average particle diameter of 0.1-2 μm, the content of the doped zinc oxide particles is 20-40 mass% with respect to the coating film, and the content of inorganic substances other than any Zn-containing compounds in the coating film is 0-1 mass% with respect to the coating film.
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
B32B 27/18 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers
Provided is a post weld heat treatment apparatus for performing heat treatment on a welded rail, the post-heat treatment apparatus comprising: an induction heating coil that covers the entire periphery of the rail; and a magnetic body that is disposed so as to cover the inner surface of the induction heating coil at a portion of the rail corresponding to a heating suppression location where heating is required to be suppressed.
B23K 31/00 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux
22) of slag calculated from the charged amounts and components of a principal starting material and an auxiliary starting material is 0.8–2.1; top-blowing of oxygen for the dephosphorization blowing is stopped when a slag height ratio that is the ratio of a slag height to the height of a freeboard inside the steelmaking furnace during the dephosphorization blowing is 0.7–1.0; and after the top-blowing of oxygen has been stopped, the molten iron is stirred by a bottom-blown gas for 1–10 minutes, and then the steelmaking furnace is tilted to remove slag into a slag pot as the intermediate slag removal from a throat.
This joint structure comprises: an RC-made support member; and a floor slab joined to the support member in an abutting direction. The support member has support concrete. The floor slab has floor concrete, and a plurality of bent fixation bars embedded in the support concrete and the floor concrete. Each of the bent fixation bars has a fixation portion extending in the vertical direction within the support concrete, and an extension portion extending in the abutting direction from the upper end of the fixation portion within the support concrete and the floor concrete. At least two of the plurality of bent fixation bars form a bar bundle in which the respective fixation portions of the fixation bars are arranged in contact with each other. One and another one of the extension portions of the at least two bent fixation bars forming the bar bundle are arranged at positions that are different from each other in the vertical direction.
NATIONAL INSTITUTE OF MARITIME, PORT AND AVIATION TECHONOLOGY (Japon)
Inventeur(s)
Okawa, Teppei
Oda, Naoki
Yonezawa, Takayuki
Imajo, Daiki
Yamada, Yasuhira
Abrégé
[Problem] To provide a hull structure and a method of designing a hull structure that enables, when run aground, prevention of freight-oil tank breaches and oil spills as well as spill-volume reduction, and that excels in anti-stranding properties with construction costs held down. [Solution] This hull structure employs, in a portion of a bow-end outer shell 21a, or in the entire region of the outer shell 21a, at the ship bottom frontward of a collision bulkhead 20, high-ductility steel plate that meets standards in conformance with the unified standards (Unified Requirement W11 Rev. 9 2017) of the International Association of Classification Societies (IACS), and in which the product of tensile strength (N/mm2) obtained from a tensile test utilizing a parent-material full-thickness test specimen in which the inter-gauge-point distance is 200 mm and the width is 25 mm, and total elongation is 120 N/mm2 or greater.
B63B 71/00 - Conception des navires; Prévision de leurs performances
B63B 71/10 - Conception des navires; Prévision de leurs performances par simulation par ordinateur, p.ex. par la méthode des éléments finis [MEF] ou la dynamique des fluides numérique [DFN]
B63B 73/00 - Construction ou assemblage de navires ou de structures marines, p.ex. coques ou plateformes en pleine mer
83.
STRUCTURAL MEMBER FOR AUTOMOBILE BODY AND AUTOMOBILE BODY
This structural member for an automobile body is a hat-shaped member including: a top plate part; a pair of side wall parts; and a pair of flange parts. Two or more longitudinal-direction beads are formed on the top plate part, and a plurality of height-direction beads are formed on the pair of side wall parts. The height-direction beads each include a pair of bead side walls and a bead bottom wall. In a cross-section perpendicular to the longitudinal direction, an angle a1 on the inner side between the bead bottom wall of the height-direction bead and the top plate part is 90-95 degrees.
B62D 21/15 - Châssis, c. à d. armature sur laquelle une carrosserie peut être montée comportant des moyens amortisseurs de chocs, p.ex. châssis conçus pour changer de forme ou de dimensions d'une façon définitive ou temporaire à la suite d'une collision avec un autre corps
A structural component (100, 200) is provided with a top plate (10) and side walls (21, 22). The structural component (100, 200) includes a curved region (30). When viewed from the side wall (21, 22) side, the curved region (30) is curved such that the top plate (10) side is on the inside of the curve and the opposite side to the top plate (10) is on the outside of the curve. In the curved region (30), the side walls (21, 22) are connected by the top plate (10) on the inside of the curve. The curved region (30) is open on the outside of the curve. When the curved region (30) is viewed in a cross section, ends (211, 221) of the top plate (10) in each of the side walls (21, 22) are disposed inside the structural component (100, 200) with respect to boundary portions (212, 222) between the side walls (21, 22) and the top plate (10). When the curved region (30) is viewed in the cross section, the total of the lengths of the side walls (21, 22) is greater than the length of the top plate (10).
A press molding device (100, 100A) comprises a punch (10, 50) and dies (20, 60). The punch (10, 50) includes a punch top surface (11, 51), a punch shoulder (12, 52), and a punch lateral surface (13, 53). The punch shoulder (12, 52) includes a curved part (121, 521). The curved part (121) curves in a protruding manner toward the outside of the punch (10) when viewed in the pressing direction (P), and curves in a recessed manner toward the inside of the punch (10) when viewed from the punch lateral surface (13) side. Alternatively, the curved part (521) curves in a recessed manner toward the inside of the punch (50) when viewed in the pressing direction (P), and curves in a protruding manner toward the outside of the punch (50) when viewed from the punch lateral surface (53) side. The curved part (121, 521) extends at a curvature radius of 5-400 mm when viewed from the punch lateral surface (13, 53) side.
Hot-rolling equipment for hot-rolling a Cu-containing steel material, the hot-rolling equipment including: a heating furnace that heats the steel material, after casting, to a prescribed temperature; a rolling device that rolls the steel material heated in the heating furnace; a removal device that is provided downstream of the heating furnace and upstream of the rolling device in the conveyance direction of the steel material and removes, from the steel material heated in the heating furnace, a target region that is present on the surface side of the steel material and includes a Cu-concentrated layer where the concentration of a Cu constituent is higher than that of a base material of the steel material; and a post-removal descaling device that is provided downstream of the removal device and upstream of the rolling device in the conveyance direction of the steel material and performs scale removal on the steel material using cooling water.
B21B 1/26 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies selon un processus continu par laminage à chaud
B21B 45/08 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour décaper, p.ex. décalaminer hydrauliquement
B23C 3/14 - Nettoyage ou écroûtage des lingots ou des pièces similaires
B23K 7/06 - Machines, appareils ou équipements spécialement adaptés au décriquage ou au dépolissage
B23P 17/00 - Opérations d'usinage non couvertes par une seule autre sous-classe ou un autre groupe de la présente sous-classe
B23P 23/04 - Machines ou agencements de machines réalisant des combinaisons déterminées de différentes opérations d'usinage, non couverts par une seule autre sous-classe pour effectuer l'usinage ainsi que les autres opérations de travail du métal
Provided is a hot rolling facility for hot-rolling a steel material containing Cu, the hot rolling facility comprising: a heating furnace for heating the steel material after casting to a predetermined temperature; a rough rolling device including a plurality of rolling mills for performing rough rolling of the steel material heated in the heating furnace; a finish rolling device for performing finish rolling of the steel material subjected to rough rolling by the rough rolling device; and a removal device for removing a target area that includes a crack caused by a Cu-enriched layer that is present on the top surface side of the steel material during the rough rolling or after the rough rolling and that has a higher concentration of Cu components than in a base material of the steel material, the removal device being provided on the downstream side, in a conveying direction of the steel material, of the rolling mill positioned on the most upstream side among the plurality of rolling mills of the rough rolling device and on the upstream side of the finish rolling device.
B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
B21B 1/26 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilés; Séquence des opérations dans les trains de laminoirs; Installation d'une usine de laminage, p.ex. groupement de cages; Succession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies selon un processus continu par laminage à chaud
B23K 7/06 - Machines, appareils ou équipements spécialement adaptés au décriquage ou au dépolissage
B23P 23/04 - Machines ou agencements de machines réalisant des combinaisons déterminées de différentes opérations d'usinage, non couverts par une seule autre sous-classe pour effectuer l'usinage ainsi que les autres opérations de travail du métal
[Problem] To further improve corrosion resistance after forming. [Solution] The surface-treated steel sheet according to the present invention has: a plating layer that is located on at least one surface of the steel sheet and contains zinc and nickel; and a coating film that is located on the plating layer and contains at least an epoxy resin and an isocyanate resin. The ratio of the total length of cracks occurring in the coating film to the total length of cracks occurring in the plating layer is 80% or less in a region 60 μm long in a direction orthogonal to the thickness direction when a viewing a cross-section cut in the thickness direction after applying 10% tensile elongation.
C25D 5/26 - Dépôt sur des surfaces métalliques auxquelles un revêtement ne peut être facilement appliqué sur des surfaces de fer ou d'acier
B32B 15/092 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique comprenant des résines époxy
C25D 3/56 - Dépôt électrochimique; Bains utilisés à partir de solutions d'alliages
A steel wire and an application thereof are provided. The steel wire has a predetermined chemical composition, in which, with the content at mass% being denoted by (element symbol%): DI, which is 0.311 × (C%)0.5 × (1 + 0.64 × (Si%)) × (1 + 4.10 × (Mn%)), is between 1.40 and 4.50 both inclusive; the total area ratio of ferrite and martensite in the metal structure in a 1/4D portion from the surface is 30.0% or less, where D is diameter; the tensile strength is between 860 × F1 + 450 MPa and 920 × F1 + 670 MPa both inclusive, where F1 = (C%) + 0.10 × (Si%) + 0.18 × (Mn%) + 0.20 × (Cr%); (tensile strength - 0.2% proof stress) / the value of uniform elongation is 20 + 25 × (C%) or less; and drawing is 66 - 48 × (C%) or more.
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
A surface-treated steel sheet having a galvanized steel sheet and a coating film that is disposed on at least one main surface of the galvanized steel sheet, the average film thickness of the coating film being 0.5-3 μm, the coating film containing a binder resin and 0.5-2.0 mass% of a lubricant, and the ratio of the maximum film thickness of the coating film to the minimum film thickness being 10-100.
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
B32B 27/18 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers
91.
CATALYST FOR PRODUCING P-XYLENE, METHOD FOR PRODUCING CATALYST FOR PRODUCING P-XYLENE, AND METHOD FOR PRODUCING P-XYLENE
Provided are: a catalyst for producing p-xylene, the catalyst comprising a first catalyst containing a ternary composite oxide of chromium, zinc, and zirconium and a second catalyst containing H-ZSM-5 zeolite coated with an oxide containing amorphous silicon; a method for producing the same; and a method for producing p-xylene using the same.
B01J 29/48 - Zéolites aluminosilicates cristallines; Leurs composés isomorphes du type pentasil, p.ex. types ZSM-5, ZSM-8 ou ZSM-11 contenant de l'arsenic, de l'antimoine, du bismuth, du vanadium, du niobium, du tantale, du polonium, du chrome, du molybdène, du tungstène, du manganèse, du technétium ou du rhénium
C07C 1/12 - Préparation d'hydrocarbures à partir d'un ou plusieurs composés, aucun d'eux n'étant un hydrocarbure à partir d'oxydes de carbone à partir d'anhydride carbonique avec de l'hydrogène
A steel sheet according to an embodiment of the present invention has: a chemical composition of, by mass, C: 0.08-0.17%, Si: 0.03- 1.40%, Mn: 1.60-3.00%, Al: 0.01-0.70%, P: 0.080% or less, S: 0.0100% or less, N: 0.0050% or less, Ti: 0.020-0.180%, Nb: 0.010-0.050%, and Ti + Nb + (Mo/2) + V: 0.100-0.600%, with the balance made up by Fe and impurities; and a metal structure comprising, by area, 80.0-97.0% of tempered martensite, a total of 10.0% or below of pearlite, ferrite and bainite, and a total of 3.0-10.0% of fresh martensite and retained austenite. The standard deviation of the Mn concentrations of fresh martensite and retained austenite is 1.0-5.0%, and the tensile strength is 1110 MPa or above.
Provided is a duplex stainless steel pipe which has both high strength and excellent corrosion resistance. A duplex stainless steel pipe according to the present disclosure contains, in mass%, 0.030% or less of C, 0.20-1.00% of Si, 0.5-7.0% of Mn, 0.040% or less of P, 0.020% or less of S, 0.100% or less of Al, 4.0-9.0% of Ni, 20.0-30.0% of Cr, 0.5-2.0% of Mo, 1.5-3.0% of Cu, 0.15-0.30% of N, 0.01-0.50% of V, 0.030-0.300% of Nb, 0.10-0.50% of Co and 0.001-0.050% of Sn. This duplex stainless steel pipe has a microstructure which comprises 35.0-65.0% by volume of ferrite, not less than 0% but less than 1.0% by volume of a σ phase, with the balance being made up of austenite. The non-solid solution Nb content is 0.008% by mass or more, the ratio of the non-solid solution Nb content to the non-solid solution Al content is 1.0 or more, and the yield strength is 655 MPa or more.
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
A double tube comprising: an inner tube provided with ribs and formed of a ferrite steel; and an outer tube formed of an austenite steel, wherein the chemical composition of the inner tube includes, in mass%, 0.01-0.30% of C, 0.01-0.80% of Si, 0.01-2.00% of Mn, 0.030% or less of P, 0.0100% or less of S, 0.01-3.50% of Cr, 0.050% or less of Al, and 0.0005-0.0500% of N, the remaining portion being Fe and impurities, and the chemical composition of the outer tube includes, in mass%, 0.10% or less of C, 0.01-0.80% of Si, 0.01-3.50% of Mn, 0.040% or less of P, 0.0100% or less of S, 5.0-70.0% of Ni, 15.0-35.0% of Cr, 1.500% or less of Al, and 0.001-0.350% of N, the remaining portion being Fe and impurities.
B21C 37/06 - Fabrication de tôles, barres, fils, tubes ou profilés métalliques ou de produits semi-finis similaires, non prévue ailleurs; Fabrication de tubes de forme particulière des tubes ou tuyaux métalliques; Procédés combinés pour fabriquer des tubes, p.ex. pour fabriquer des tubes à parois multiples
C21D 9/08 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 38/38 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/60 - Alliages ferreux, p.ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
C22F 1/16 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid des autres métaux ou de leurs alliages
95.
EPOXY RESIN COMPOSITION AND METHOD FOR PRODUCING SAME
Provided is an epoxy resin composition containing: a main agent containing an epoxy resin (A), a rosin-based resin (B), and a modifier (C) for an epoxy resin; and a curing agent (D). In addition, provided is a method for producing an epoxy resin composition, the method comprising: step 1 in which the curing agent (D) is mixed with a portion of the epoxy resin (A) to prepare a resin composition; step 2 in which the epoxy resin (A), the rosin-based resin (B), and the modifier (C) for an epoxy resin are charged into a dissolving vessel and mixed under heating at 140-170°C for 1-6 hours to obtain a master batch based on the dissolution of components (B) and (C); and step 3 in which the master batch obtained in step 2 is cooled to 50-70°C and then the resin composition obtained in step 1 is added thereto and mixed at 50-70°C for 0.5-2 hours to obtain an epoxy resin composition.
C08L 63/00 - Compositions contenant des résines époxy; Compositions contenant des dérivés des résines époxy
C08J 3/22 - Formation de mélanges de polymères avec des additifs, p.ex. coloration en utilisant les techniques des charges mères
C08L 51/04 - Compositions contenant des polymères greffés dans lesquels le composant greffé est obtenu par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone; Compositions contenant des dérivés de tels polymères greffés sur des caoutchoucs
C08L 53/00 - Compositions contenant des copolymères séquencés possédant au moins une séquence d'un polymère obtenu par des réactions ne faisant intervenir que des liaisons non saturées carbone-carbone; Compositions contenant des dérivés de tels polymères
Provided is a method for producing a recycled product of a waste plastic, whereby it becomes possible to recycle a large amount of waste plastics. The method for producing a recycled product of a waste plastic comprises: charging the waste plastic in a coke furnace at a predetermined maximum charging height that is a height more than half of the furnace width of the coke furnace; performing dry distillation for a predetermined dry distillation time to produce a dry distilled product, tar, light oil, and a gas; and removing the dry distilled product from the coke furnace using an extruder. In the method, the value of the predetermined dry distillation time is obtained by determining a relational expression between a maximum charging height for the waste plastic and a dry distillation time required for the completion of the dry distillation and then calculating the predetermined dry distillation time by substituting the predetermined maximum charging height into the relational expression.
C10B 53/07 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de matières polymères synthétiques, p.ex. pneumatiques
C08J 11/12 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p.ex. dévulcanisation uniquement par traitement à la chaleur sèche
C10G 1/10 - Production de mélanges liquides d'hydrocarbures à partir de schiste bitumineux, de sable pétrolifère ou de matières carbonées solides non fusibles ou similaires, p.ex. bois, charbon à partir de caoutchouc ou de déchets de caoutchouc
A structural component (100) includes a component body (10) and a reinforcing member (20). The component body (10) includes a top plate (11) and vertical walls (121, 122). The vertical walls (121, 122) are continuous with the top plate (11). The reinforcing member (20) is disposed between the vertical walls (121, 122). The component body (10) includes a curved part (15). The curved part (15) is curved such that the top plate (11) side is a curve inner side, when viewed from the vertical walls (121, 122) side. On a curve outer side of the curved part (15), an end part (121a) of the vertical wall (121) and an end part (122a) of the vertical wall (122) are spaced apart. At least a part of the reinforcing member (20) is disposed in the curved part (15) and connects the vertical wall (121) and the vertical wall (122) to each other on the side closer to the top plate (11) than the end parts (121a, 122b) of the vertical walls (121, 122) are.
231010 phase that is partially substituted by Ni. The Sn-Zn based plating layer is composed of 1.0-15.0% by mass of Zn, with the balance being made up of Sn and impurities. The total coating amount of the first alloy layer, the second alloy layer and the Sn-Zn based plating layer is 5-80 g/m2 per one surface.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
C25D 5/26 - Dépôt sur des surfaces métalliques auxquelles un revêtement ne peut être facilement appliqué sur des surfaces de fer ou d'acier
99.
METHOD FOR MANUFACTURING ELECTRIC RESISTANCE WELDED STEEL PIPE, AND ELECTRIC RESISTANCE WELDED STEEL PIPE
Provided is a method for manufacturing an electric resistance welded steel pipe, the method including: an end face shaping step for forming an outer inclined portion inclined in a plate thickness direction from an outer surface side toward an inner surface side, or forming the outer inclined portion and an inner inclined portion inclined in the plate thickness direction from the inner surface side toward the outer surface side, on each of a first end face and a second end face on both sides in the width direction of a plated steel sheet, such that the first end face and the second end face have a shape in which the plate thickness decreases from the center in the width direction toward the end faces; and a pipe making step for abutting and welding the shaped first end face and second end face together to form a pipe. This suppresses a deterioration in corrosion resistance around a welded portion in an electric resistance welded steel pipe having a plated steel sheet as a starting plate.
The present invention was made with the objective of increasing the efficiency of electric resistance welding easily and at low cost without converting or newly making a mandrel or an impeder and impeder case constituting a conventional inner-circumferential current suppression device. An impeder sheet according to the present invention comprises: a sheet that can be wound around the outer circumferential part of a mandrel of an electric resistance welded pipe manufacturing device; and a plurality of ferromagnetic bodies which are disposed on the sheet and which exhibit insulating properties.