The non-oriented electrical steel sheet according to the present invention includes a composition in which α-γ transformation can occur, and the composition contains Ti: 0.0001%˜0.0050%, and when an area ratio of crystal grains in a {hkl} orientation (within a tolerance of 10°) to the entire visual field when a steel sheet surface is measured by a scanning electron microscope equipped with electron back scattering diffraction (SEM-EBSD) is represented as Ahkl-uvw, A411-011 is 15% or more, and the number density of precipitates is 0.5 pieces/μm2˜50 pieces/μm2.
Provided is a high strength hot rolled steel sheet having a predetermined chemical composition, wherein when a total width in a direction perpendicular to a rolling direction and sheet thickness direction is W, a microstructure at a ¼ position in sheet thickness at all positions of a 1/10W position, 3/10W position, 5/10W position, 7/10W position, and 9/10W position from an end in a width direction comprises, by area %, tempered martensite: 95% or more, fresh martensite: 5% or less, and at least one of ferrite, upper bainite, and pearlite: 5% or less in total, and a difference between a maximum value and minimum value in tensile strength at all the positions in the width direction is 30 MPa or less.
A non-oriented electrical steel sheet includes a base steel sheet and an insulating coating, wherein the base steel sheet includes a predetermined chemical composition, a thickness of the base steel sheet is 0.10 mm or more and 0.35 mm or less, and when the base steel sheet is viewed in a cross section whose cutting direction is parallel to a thickness direction, an average grain size is 10 μm or less in a surface region which ranges from a surface of the base steel sheet to 1/20 of the thickness.
H01F 1/147 - Alliages caractérisés par leur composition
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
The grain-oriented electrical steel sheet includes: a base steel sheet; a forsterite film formed on a surface of the base steel sheet; and an insulating film formed on a surface of the forsterite film, wherein the base steel sheet includes, as a chemical composition, in terms of mass %, 0.80 to 7.00% of Si, in the surface of the base steel sheet, grains where the distance between grain boundaries of a grain is 3.0 mm or more and 13.0 mm or less in a rolling direction have an area ratio of 70% or more, a magnetic flux density B8 generated under a magnetizing force of 800 A/m is 1.88 T or more, when a sheet thickness is defined as t in a unit mm, an iron loss W17/50 is 13.1×t2−4.3×t+1.2 or less in a unit W/kg under a frequency of 50 Hz and a maximum magnetic flux density of 1.7 T, and a LvA200 Hz, which is a 200 Hz component of magnetostriction waveform is 60 to 78 dBA.
Provided is a hot rolled steel sheet having a predetermined chemical composition, and a microstructure comprising, by area ratio, ferrite: 60 to 80%, bainite: 15 to 30%, and martensite: 3 to 10%, wherein TiC precipitates having a diameter of 1.0 to 5.0 nm are present in the ferrite in a number density of 1.0×1016 to 100.0×1016/cm3, and the hot rolled steel sheet has a tensile strength of 780 MPa or more tensile strength.
The present invention has as its technical problem to provide a welded joint suppressed in LME cracking at the time of production. The welded joint of the present invention has a plated steel sheet forming the welded joint having a predetermined chemical composition, has a depth with a C concentration measured by GDS of 0.05% or less in a depth direction of the base material starting from an interface of the plating layer and the base steel sheet at a non-heat affected zone of the plated steel sheet of 5 μm or more, has a roughness of the interface of the plating layer and the base steel sheet at a cross-section of the steel sheet of the non-heat affected zone of an Ra of 3.0 μm or less, and has a C concentration at a depth of 5 μm of the base steel sheet starting from an interface of the plating layer and the base steel sheet of the plated steel sheet in a range of 0 to 100 μm from a bead toe of the welded part to an opposite direction from the welded part of 0.05% or less.
This hot-rolled steel sheet has a predetermined chemical composition, in a microstructure at a depth position of 1/4 from a surface in a sheet thickness direction, in terms of area %, residual austenite is less than 3.0%, ferrite is 15.0% or more and less than 60.0%, and pearlite is less than 5.0%, an E value is 10.7 or more, an I value is 1.020 or more, a CS value is −8.0×105 to 8.0×105, a standard deviation of Mn concentrations is 0.60 mass % or less, a solute Cr concentration in an outermost layer region is 0.10 mass % or more, a number density of Cr oxides having a sphere equivalent radius of 0.1 μm or more at the surface is 1.0×104 pieces/cm2 or less.
This hot-rolled steel sheet has a predetermined chemical composition, in a microstructure at a position of ¼ from a surface in a sheet thickness direction, in terms of area %, residual austenite is less than 3.0%, ferrite is 15.0% or more and less than 60.0%, and pearlite is less than 5.0%, an E value is 10.7 or more, an I value is 1.020 or more, a CS value is −8.0×105 to 8.0×105, a standard deviation of Mn concentrations is 0.60 mass % or less, at the surface, a number density of Si—Al—Cr oxides having a sphere equivalent radius of 0.500 μm or more is 2.0×103 pieces/cm2 or less, and a number density of Si—Al—Cr oxides having a sphere equivalent radius of 0.005 μm to 0.050 μm is 1.0×105 pieces/cm2 or more.
An austenitic alloy material of the present disclosure contains, in mass %, C: more than 0 to 0.200%, Si: more than 0 to 3.00%, Mn: more than 0 to 3.00%, P: more than 0 to 0.050%, S: more than 0 to 0.050%, Ni: 40.00 to 80.00%, and Cr: 10.00 to 35.00%, and also contains one or more kinds of element selected from a group consisting of Sn, Zn, Pb, Sb, As, and Bi, and further contains one or more kinds of element selected from a group consisting of Cu, Mo, Co, W, Ti, Nb, V, B, N, rare earth metal, Al, Ca, and Mg, with the balance being Fe and impurities. Fn1 is less than 20, and Fn2 is higher than 21 and less than 50.
An austenitic alloy material of the present disclosure contains, in mass %, C: more than 0 to 0.200%, Si: more than 0 to 3.00%, Mn: more than 0 to 3.00%, P: more than 0 to 0.050%, S: more than 0 to 0.050%, Ni: 40.00 to 80.00%, and Cr: 10.00 to 35.00%, and also contains one or more kinds of element selected from a group consisting of Sn, Zn, Pb, Sb, As, and Bi, and further contains one or more kinds of element selected from a group consisting of Cu, Mo, Co, W, Ti, Nb, V, B, N, rare earth metal, Al, Ca, and Mg, with the balance being Fe and impurities. Fn1 is less than 20, and Fn2 is higher than 21 and less than 50.
Fn
1
=
177.84
+
11.12
Si
-
24.36
Mn
-
8.11
Cu
-
1.61
Cr
-
1.78
Ni
-
2.68
Mo
Fn
2
=
(
Sn
+
Zn
+
Pb
+
Sb
+
As
+
Bi
)
×
10
3
A duplex stainless steel material according to the present disclosure consists of, in mass %, C: 0.030% or less, Si: 0.20 to 1.00%, Mn: 0.5 to 7.0%, P: 0.040% or less, S: 0.0200% or less, Al: 0.100% or less, Ni: 4.0 to 9.0%, Cr: 20.0 to 30.0%, Mo: 0.5 to 2.0%, Cu: 1.5 to 3.0%, N: 0.15 to 0.30%, V: 0.01 to 0.50%, Co: 0.05 to 1.00%, and Sn: 0.001 to 0.050%, with the balance being Fe and impurities. The yield strength is 758 MPa or more. The microstructure is composed of, in volume ratio, ferrite in an amount of 35 to 65%, with the balance being austenite. A dislocation density ρ(α) in the ferrite and a dislocation density ρ(γ) in the austenite satisfy the following Formula (1):
A duplex stainless steel material according to the present disclosure consists of, in mass %, C: 0.030% or less, Si: 0.20 to 1.00%, Mn: 0.5 to 7.0%, P: 0.040% or less, S: 0.0200% or less, Al: 0.100% or less, Ni: 4.0 to 9.0%, Cr: 20.0 to 30.0%, Mo: 0.5 to 2.0%, Cu: 1.5 to 3.0%, N: 0.15 to 0.30%, V: 0.01 to 0.50%, Co: 0.05 to 1.00%, and Sn: 0.001 to 0.050%, with the balance being Fe and impurities. The yield strength is 758 MPa or more. The microstructure is composed of, in volume ratio, ferrite in an amount of 35 to 65%, with the balance being austenite. A dislocation density ρ(α) in the ferrite and a dislocation density ρ(γ) in the austenite satisfy the following Formula (1):
0.3
<
ρ
(
γ
)
/
ρ
(
α
)
<
4.
(
1
)
C21D 7/10 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid sur toute la section droite, p. ex. des tiges d'armature pour béton
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
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
A plated steel sheet having a high LME resistance is provided. The plated steel sheet having predetermined chemical composition, having a depth with a C concentration, measured by GDS, of 0.05% or less in a depth direction of the base steel sheet starting from an interface of the base steel sheet and plating layer of 10 μm or more, having a thickness of a layer with an area ratio of a ferrite phase of 90% or more in a depth direction from the base steel sheet surface of 20 μm or more, and having a surface roughness of the interface of the base steel sheet and plating layer of an Ra of 3.0 μm or less.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 18/04 - Alliages à base de zinc avec l'aluminium comme second constituant majeur
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
The hot-dip plated steel material includes a steel material and a hot-dip plated layer disposed on a surface of the steel material, the hot-dip plated layer has a certain chemical composition, and the hot-dip plated layer has a diffraction intensity obtained from a result of X-ray diffraction measurement, the diffraction intensity satisfying a certain relationship.
A coated checkered steel sheet including: a substrate checkered steel sheet having convex parts with a height of 3.0 mm or less and flat parts on one sheet surface; a coating layer that includes a zinc-based alloy layer that is arranged on the sheet surface of the substrate checkered steel sheet having the convex parts and the flat parts; and a chemical treatment coating film layer provided on a surface of the coating layer; in which a coating thickness of the chemical treatment coating film layer on the flat parts of the substrate checkered steel sheet is from 0.10 to 5.00 μm on one surface, and a coating thickness ratio of the chemical treatment coating film layer between the flat parts and the convex parts of the substrate checkered steel sheet (thickness of the chemical treatment coating film layer on the flat parts/thickness of the chemical treatment coating film layer on the convex parts) is from 0.2 to 5.0.
A cooling floor member (100) is a cooling floor member (100) for cooling a battery cell, including a metal underfloor material (101), a flat plate-like metal floorboard (102) which is arranged face to the metal underfloor material (101), and which has a surface opposite to the metal underfloor material (101) that comes into contact with the battery cell, a partition member (105) inserted between the metal underfloor material (101) and the flat plate-like metal floorboard (102) without being joined thereto, and a joint (130) in which the outer peripheral edge of the metal underfloor material (101) and the outer peripheral edge of the flat plate-like metal floorboard (102) are directly and continuously joined, wherein a region surrounded by the metal underfloor material (101), the flat plate-like metal floorboard (102), and the partition member (105) is a cooling liquid flow path (104) through which a cooling liquid flows.
Provided are: a coated steel material including a base steel and a coating layer including a Zn—Al—Mg alloy layer provided on a surface of the base steel and a Mg enrichment layer provided on a surface of the Zn—Al—Mg alloy layer in which a thickness of the Mg enrichment layer is 0.8 μm or more and (thickness of coating layer×½) or less; and a method for manufacturing the coated steel material.
A steel material that has an average chemical composition containing Ni at 18.00 to 36.00% and Si at 5.50 to 12.00%, and has a metallurgical structure containing an austenite phase and ordered phases. In addition, an automobile component including the steel material.
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C21D 6/00 - Traitement thermique des alliages ferreux
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
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
A titanium alloy sheet includes, as a chemical composition, by mass %: Al: 1.00% to 7.00%; Fe: 0.10% to 1.70%; O: 0.05% to 0.30%; N: 0.000% to 0.080%; C: 0.000% to 0.100%; H: 0.000% to 0.013%; Cu: 0.00% to 2.00%; Si: 0.00% to 0.30%; and a remainder Ti and impurities, wherein a microstructure includes, by an area ratio, 80% or more of an a phase, an average grain size of the α phase is 20.0 μm or less, an area ratio of crystal grains αt-30 in which an angle formed between a c-axis and a thickness direction of the titanium alloy sheet is within 30 degrees in the α phase is 20% to 50%, and an area ratio of crystal grains in which an average value of GOS (grain orientation spread) measured using EBSD (electron backscatter diffraction) is 2.0 or less in the αt-30 is 80% or more.
This steel sheet includes: a base steel sheet having a predetermined chemical composition; and a zinc-plated layer formed on a surface of the base steel sheet, in which, when a sheet thickness of the base steel sheet is denoted by t, a metallographic structure at a t/4 position, which is a position at t/4 from the surface in a cross section in a sheet thickness direction of the base steel sheet, contains, by volume percentage, tempered martensite: 85% or more, residual austenite: 7% or more, and one or more selected from ferrite, pearlite, bainite, and fresh martensite: 0% or more and 8% or less, a metallographic structure in a surface layer region, which is a range from the surface to a position of 50 μm in the cross section in the sheet thickness direction, contains, by volume percentage, 30% or more of bainite, and a remainder including one or more selected from ferrite, pearlite, tempered martensite, fresh martensite, and residual austenite, in the surface layer region, a diameter of prior austenite grains in the sheet thickness direction is 10.0 μm or less, and a tensile strength of the steel sheet is 1,470 MPa or more.
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
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
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
This plated steel material is a plated steel material including: a steel material; and a plating layer disposed on a surface of the steel material, wherein the plating layer has a predetermined average chemical composition, in a cross section of the plating layer perpendicular to the surface of the steel material, a microstructure observed with a scanning electron microscope includes, in terms of area fraction, a MgZn2 phase: 10% or more and 50% or less, a total of an Al phase, an Al—Zn phase, and a Zn—Al phase: 15% or more and 75% or less, a [ternary eutectic structure of Al/MgZn2/Zn]: 0% or more and 65% or less, and the remainder: 0% or more and 5.0% or less, and an area ratio (([Al]+[Zn—Al])/[Al—Zn]) of a total of the Al phase and the Zn—Al phase to the Al—Zn phase is 0.8 or more.
A wheel includes a boss, a rim, and a web. When viewed in a longitudinal section of the wheel, the boss includes a contour extending from the web to an end face in the axial direction of the boss. The contour includes curves. A first curve is continuous with the web. The first curve has a first radius of curvature. The second curve is arranged on the end face side in the axial direction of the boss relative to the first curve. The second curve has a second radius of curvature. The second radius of curvature is greater than the first radius of curvature. The path length of the second curve is greater than the path length of the first curve.
Employed is a plated steel material including: a plated-metal-layer arranged on a surface of a steel material, wherein the plated-metal-layer includes: a lower alloy layer including 22.5% or more of Fe; an intermediate alloy layer including 20.0% or more of Fe and 0.5 to 10.0% of Ni; and an upper plated layer made of a Zn-based alloy including 0 to 5.0% of Fe arranged in this order from a side of the steel material, a thickness of the lower alloy layer is 5 μm or more, a thickness of the intermediate alloy layer is 1.0 μm or more, and a total thickness thereof is 6 μm or more, the lower alloy layer includes 5.0 to 30.0% of Zn, 30.0 to 55.0% of Al, 22.5 to 50.0% of Fe, 0 to 10.0% of Si, 0 to less than 0.5% of Ni, 0 to 1.0% of Mg, and a balance including impurities, and the intermediate alloy layer includes 5.0 to 35.0% of Zn, 25.0 to 60.0% of Al, 20.0 to 45.0% of Fe, 0 to 10.0% of Si, 0.5 to 10.0% of Ni, 0 to 1.0% of Mg, and a balance including impurities.
A non-oriented electrical steel sheet includes, by mass %, C: 0.005% or less, Si: 2.00% or more and 4.50% or less, Mn: 0.01% or more and 5.00% or less, Al: 0.03% or more and 5.00% or less, total SE of one kind or two or more selected from the group consisting of S, Se, and Te: more than 0% and 0.005% or less, N: more than 0% and 0.005% or less, and P: more than 0% and 1.000% or less, in which a remainder includes Fe and impurities and Expression (1) and Expression (2) are satisfied, the standard deviation of a ratio LRD/LTD of a length LRD in a rolling direction to a length LTD in a width direction of a circular hole after punching the steel sheet using a substantially circular die is 0.010 or less, and an iron loss W15/50 is 2.50 W/kg or less.
A non-oriented electrical steel sheet includes, by mass %, C: 0.005% or less, Si: 2.00% or more and 4.50% or less, Mn: 0.01% or more and 5.00% or less, Al: 0.03% or more and 5.00% or less, total SE of one kind or two or more selected from the group consisting of S, Se, and Te: more than 0% and 0.005% or less, N: more than 0% and 0.005% or less, and P: more than 0% and 1.000% or less, in which a remainder includes Fe and impurities and Expression (1) and Expression (2) are satisfied, the standard deviation of a ratio LRD/LTD of a length LRD in a rolling direction to a length LTD in a width direction of a circular hole after punching the steel sheet using a substantially circular die is 0.010 or less, and an iron loss W15/50 is 2.50 W/kg or less.
(
Si
+
Mn
+
Al
)
≥
4.5
%
Expression
(
1
)
Al
/
3
≤
Mn
Expression
(
2
)
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 6/00 - Traitement thermique des alliages ferreux
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 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
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
23.
METHOD FOR MANUFACTURING PRESS-FORMED PRODUCT, AND BLANK
A method for manufacturing a press-formed product includes clamping a blank (10) between a support surface (140) of a first press die (100) and a support surface (340) of a third press die (300), and pressing a second press die (200) into the first press die (100) to draw the blank (10), wherein a ridge (130) of an edge of a press hole (123) of the first press die (100) has a curved region (131) that extends in a curved manner, and when a corner end portion (11) is defined, the corner end portion (11) of the blank (10) between an intersection point M and an intersection point N includes both line segments MO and NO, and a part of the corner end portion (11) is outside a region between the line segment MO and the line segment NO.
The surface-treated steel sheet is a surface-treated steel sheet including a base steel sheet, a plating layer formed on a surface of the base steel sheet, and a coating formed on a surface of the plating layer, in which the plating layer has a Zn concentration of 40 mass % or more and 100 mass % or less, and a Mg concentration of 0 mass % or more and less than 4.0 mass %, and a maximum concentration of Ti in mass %, a maximum concentration of Zr in mass %, and a maximum concentration of V in mass % from the interface to a center in the thickness direction from the interface to the surface satisfy a predetermined relationship, and an average concentration of C in mass % in the center portion of the coating, a maximum concentration of Mg in mass % in the boundary region of the coating, an average concentration of Mg in mass % in the center portion of the coating, a maximum concentration of F in mass % in the boundary region of the coating, an average concentration of F in mass % in the center portion of the coating, and an average concentration of Si in mass % in the center portion of the coating satisfy a predetermined relationship.
Provided is a steel sheet having a predetermined chemical composition and a microstructure comprising, by area ratio, ferrite: 80 to 95%, martensite: 5 to 20%, and at least one of bainite, pearlite, and retained austenite: 0 to 10% in total, wherein an average grain interval of martensite is 2.5 μm or less, and a standard deviation in area ratio of martensite in a direction vertical to a rolling direction and a sheet thickness direction is 1.5% or less.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/08 - Alliages ferreux, p. ex. aciers alliés contenant du nickel
C22C 38/10 - Alliages ferreux, p. ex. aciers alliés contenant du cobalt
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/28 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du titane ou du zirconium
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
26.
CARBURIZER AND CARBURIZATION METHOD USING THE SAME
A carburizer, which effects carburization with respect to molten iron accommodated in an electric furnace or a ladle, includes a mixture of quicklime and a carbon material having an ash content of from 5 mass % to 18 mass %, and satisfies the conditions 0.6≤(mc+Mc)/ms≤2.7 and 0.7≤(mc+Mc)/ma≤6.5. A method of carburization uses this carburizer. Here, mc represents the mass of CaO in the carbon material, ms represents the mass of SiO2 in the carbon material, ma represents the mass of Al2O3 in the carbon material, and Mc represents the mass of the quicklime.
In a slag discharge amount estimation method, images of a slag flow flowing out from an outlet of a refining vessel are captured with a single imaging device. An upstream side of the slag flow is wider than a downstream side. Widths of the slag flow are found from the captured images, and a volume flow rate or mass flow rate of the slag flow is found. On the basis of the volume flow rate or the mass flow rate, a slag discharge amount is estimated.
Grain-oriented electrical steel sheet excellent in magnetic properties and adhesion of a primary coating to a base steel sheet and with few defects where the base metal is exposed in point defects and a method for manufacturing grain-oriented electrical steel sheet are provided. This is characterized by being provided with a base steel sheet and a primary coating. The primary coating satisfies (1) Number density D3 of Al concentrated regions: 0.015 to 0.150/μm2, (2) (Area S5 of regions comprised of anchoring oxide layer regions and Al concentrated regions)/(area S3 of Al concentrated regions)≥0.30, (3) Distance H5 of mean value of heights in thickness direction of regions of comprised of anchoring oxide layer regions and Al concentrated regions minus H0: 0.4 to 4.0 μm, (4) (Perimeter L5 of regions comprised of anchoring oxide layer regions and Al concentrated regions)/(observed area S0): 0.020 to 0.500 μm/μm2, and (5) (Area S1 of anchoring oxide layer regions)/(observed area S0)≥0.15.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 6/00 - Traitement thermique des alliages ferreux
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 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
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
Coils (230, 330) are respectively arranged on a front side and a rear side of a planned conveyance plane (CP). Main cores (211, 311), edge cores (212, 213, 312, 313), and bridge cores (220a, 220b, 320a, 330b) are arranged with respect to the coils (230, 330). The bridge cores (220a, 220b, 320a, 330b) are arranged on a back side of the main cores (211, 311) and the edge cores (212, 213, 312, 313). The main cores (211, 311) and the edge cores (212, 213, 312, 313) can be magnetically coupled by using the bridge cores (220a, 220b, 320a, 320b).
This hot-rolled steel sheet has a predetermined chemical composition, in a microstructure, in terms of area %, residual austenite is less than 3.0%, ferrite is 15.0% or more and less than 60.0%, and pearlite is less than 5.0%, an E value that indicates periodicity of the microstructure is 10.7 or more, and an I value that indicates uniformity of the microstructure is 1.020 or more, a standard deviation of a Mn concentration is 0.60 mass % or less, and a tensile strength is 980 MPa or more.
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
31.
MIXED POWDER, MGO PARTICLES, METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR MANUFACTURING MGO PARTICLES, AND METHOD FOR MANUFACTURING MIXED POWDER
The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein the mixed powder contains Al and B, an Al content contained in the entire mixed powder is 0.0007 mass % or more and 0.050 mass % or less, a B content contained in the entire mixed powder is 0.005 mass % or more and 0.040 mass % or less, the B contains tri-coordinated boron, an average particle size of the mixed powder is 0.08 μm or more and 9.0 μm or less, and a formula (1) below is satisfied.
The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein the mixed powder contains Al and B, an Al content contained in the entire mixed powder is 0.0007 mass % or more and 0.050 mass % or less, a B content contained in the entire mixed powder is 0.005 mass % or more and 0.040 mass % or less, the B contains tri-coordinated boron, an average particle size of the mixed powder is 0.08 μm or more and 9.0 μm or less, and a formula (1) below is satisfied.
0.06
≤
[
Al
]
/
[
BO
3
]
<
5.
Formula
(
1
)
The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein the mixed powder contains Al and B, an Al content contained in the entire mixed powder is 0.0007 mass % or more and 0.050 mass % or less, a B content contained in the entire mixed powder is 0.005 mass % or more and 0.040 mass % or less, the B contains tri-coordinated boron, an average particle size of the mixed powder is 0.08 μm or more and 9.0 μm or less, and a formula (1) below is satisfied.
0.06
≤
[
Al
]
/
[
BO
3
]
<
5.
Formula
(
1
)
In the formula (1), [Al] is an Al content (mass %) in the mixed powder, and [BO3] is a content (mass %) of the tri-coordinated boron in the mixed powder.
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
C01F 5/06 - Magnésie par décomposition thermique des composés du magnésium
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
This hot-rolled steel sheet has a desired chemical composition and microstructure, an average sphere equivalent radius of alloy carbides in the ferrite is 0.5 nm or more and less than 10.0 nm, an average number density of the alloy carbides in the ferrite is 0.10×1016 pieces/cm3 or more and less than 1.45×1016 pieces/cm3, an E value that indicates periodicity of the microstructure is 10.7 or more, and an I value that indicates uniformity of the microstructure is 1.020 or more, and a standard deviation of Mn concentration is 0.60 mass % or less.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
33.
MIXED POWDER, MGO PARTICLES, METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR MANUFACTURING MGO PARTICLES, AND METHOD FOR MANUFACTURING MIXED POWDER
The mixed powder is a mixed powder for an annealing separator containing MgO as a main agent, wherein an average particle size of the mixed powder is 0.10 μm or more and 8.50 μm or less, the mixed powder contains B, and a B content contained in the entire mixed powder is 0.005 mass % or more and less than 0.040 mass %, a proportion of tri-coordinated boron in the B is 5 mass % or more and less than 70 mass %, and a ratio of a circumferential length to a thickness of primary particles containing the MgO is 6.0 or more.
A fastening member includes a body portion, a first end portion, a second end portion, a first linking portion, and a second linking portion. A part of the body portion that is adjacent to the first linking portion and the first linking portion have outer diameters with different values. The outer diameters of the first end portion and the first linking portion are smaller than the outer diameter of the part of the body portion that is adjacent to the first linking portion. A part of the body portion that is adjacent to the second linking portion and the second end portion have outer diameters with different values. The thicknesses of the first end portion and the first linking portion as viewed in the axial direction are smaller than the thickness of the body portion.
Provided is an induction heating device for a metal plate including: a first conductor member that faces at least one of a front surface or a back surface of the metal plate and that is disposed across the metal plate in a width direction; a second conductor member that is separated from the first conductor member by a first distance in a plate passing direction of the metal plate, that faces at least one of the front surface or the back surface of the metal plate, and that is disposed across the metal plate in the width direction; connecting members that connect the first conductor member and the second conductor member to each other at positions separated from width-directional end portions of the metal plate to form a primary closed circuit; and an AC power supply connected to the primary closed circuit, in which the first distance is larger than a sum of dimensions of the first conductor member and the second conductor member in the plate passing direction of the metal plate.
F27B 9/06 - Fours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité chauffés sans contact entre gaz de combustion et la chargeFours dans lesquels la charge est déplacée mécaniquement, p. ex. du type tunnel Fours similaires dans lesquels la charge se déplace par gravité chauffés électriquement
B21B 1/22 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies
B21B 1/28 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminer des bandes ou des feuilles en longueurs indéfinies selon un processus continu par laminage à froid
B21B 45/00 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs
F27D 11/06 - Chauffage par induction, c.-à-d. dans lequel le matériau à chauffer ou son contenant, ou bien les éléments incorporés dans celui-ci, constitue le secondaire d'un transformateur
36.
QUANTITATIVE ANALYSIS METHOD AND QUANTITATIVE ANALYSIS DEVICE
A quantitative analysis method and quantitative analysis device speeding detection and resistant to the effect of the condition of the device (fluctuations in sensitivity) in mass spectrometry using a mass spectrometer, i.e., a quantitative analysis method of a measured object using a mass spectrometer, which quantitative analysis method comprising a gas introduction step of mixing a gas of the measured object and a carrier gas different from the gas of the measured object and having two or more natural isotopes and introducing them to a mass spectrometer, a mass spectrometry step of mass spectrometry of the gas of the measured object and the two or more natural isotopes in the carrier gas at the mass spectrometer, and a gas concentration calculation step of calculating a concentration of the gas of the measured object using analyzed values of the two or more isotopes of the carrier gas obtained by the mass spectrometry step as calibration standards.
Provided is a tin-plated steel sheet which is more excellent in yellowing resistance in a steel sheet for containers having a film layer containing zirconium without being subjected to a conventional chromate treatment. A tin-plated steel sheet is adopted which has a steel sheet, a tin plating layer located on at least one surface of the steel sheet, and a film layer located on the tin plating layer and containing zirconium oxide and tin sulfide, in which an adhesion amount of the tin-based plating layer is 0.1 g/m2 or more and 15 g/m2 or less in terms of the amount of metal Sn, an adhesion amount of the zirconium oxide in the film layer is 0.2 mg/m2 or more and 50 mg/m2 or less in terms of the amount of metal Zr, and an adhesion amount of the tin sulfide is 0.1 mg/m2 or more and 5 mg/m2 or less in terms of the amount of sulfur.
B65D 65/40 - Emploi de stratifiés pour des buts particuliers d'emballage
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B65D 17/00 - Réceptacles rigides ou semi-rigides spécialement conçus pour être ouverts par coupage ou perçage, ou en perçant ou en déchirant des éléments ou des parties frangibles
38.
LASER PROCESSING DEVICE AND LASER PROCESSING METHOD
This laser processing device includes: an air nozzle for discharging first gas toward the irradiation site of the laser light at a flow velocity of 140 m/sec or less; and a first dust collection unit having a first opening section in which a central axis passing through the center of an opening shape is disposed substantially parallel to a nozzle main axis direction of the air nozzle and which is formed at a position facing the surface of the steel sheet, and a first dust collection duct linked to the first opening section, the first dust collection unit suctioning laser spatter via the first opening section and collecting the suctioned laser spatter using the first dust collection duct in a state in which the average suction flow velocity is from 15 m/sec to 50 m/sec.
This plated steel material includes a steel sheet, a plated layer formed on the steel sheet, and an oxide layer formed on the plated layer, in which the plated layer has a chemical composition containing, by mass %, 1.0 to 60.0% of Al, 1.0 to 15.0% of Mg, 0 to 2.0% of Si, 0 to 2.0% of Ca, and 0 to 2.0% of Fe, and a remainder being of Zn and impurities, the oxide layer has a thickness of 5 nm or more, and a (Al+Mg)/Zn intensity ratio that is the ratio of the total of the maximum intensity of Al and the maximum intensity of Mg to the maximum intensity of Zn in energy dispersive X-ray analysis of the oxide layer is 1.0 or more, and the oxide layer includes an amorphous microstructure.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
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
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
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
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
A steel material of the present disclosure has the chemical composition described in the specification, Fn defined by formula (1) is 0.45 to 1.05, at a depth of 0.08R from a surface of the steel material (R is a radius), a number density of fine Bi particles, which are Bi particles having an equivalent circular diameter of 0.1 to 1.0 μm, is 15.00 pieces/mm2 or more and a number density of coarse Bi particles, which are Bi particles having an equivalent circular diameter of 10.0 μm or more, is 0.25 pieces/mm2 or less, and at a depth of 0.65R from the surface of the steel material, the number density of the fine Bi particles is less than 15.00 pieces/mm2 and the number density of the coarse Bi particles is more than 0.25 pieces/mm2.
A Zn—Al—Mg-based hot-dip plated steel sheet includes a hot-dip plated layer formed on a surface of a steel sheet, in which the hot-dip plated layer contains, as an average composition, Al: 5 to 22 mass % and Mg: 1.0 to 10 mass %, with a remainder including Zn and impurities, and in a case where a 5 mm square cross section parallel to a surface of the hot-dip plated layer is exposed at any position of a 3t/4 position, a t/2 position, and a t/4 position from the surface with a thickness of the hot-dip plated layer represented by t, a ratio (B/A (%)) of an area fraction B of a [Zn phase] to a total area fraction A of a [Zn phase] and an [Al/MgZn2/Zn ternary eutectic structure] of a plating microstructure in at least one cross section is 20% or more.
A steel sheet includes a predetermined composition, in which a microstructure at a ¼ thickness position from a surface in a sheet thickness direction includes, by vol %, ferrite: 80% or more, martensite: 2% or less, and residual austenite: 2% or less, a proportion of unrecrystallized ferrite in the ferrite of 5% or less, and in the microstructure of the steel sheet stretched by 10% at the ¼ thickness position from the surface in the sheet thickness direction, a number density of voids having a maximum diameter of 1.0 μm or more is 1.0×109 pieces/m2 or less.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
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
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
A Zn—Al—Mg-based hot-dip plated steel sheet includes a steel sheet and a hot-dip plated layer formed on a surface of the steel sheet, in which the hot-dip plated layer contains, as an average composition, Al: more than 10 to 22 mass % and Mg: 1.0 to 10 mass %, with a remainder including Zn and impurities, and in a case where a 5 mm square cross section parallel to a surface of the hot-dip plated layer is exposed at any position of a 3t/4 position, a t/2 position, and a t/4 position from the surface with a thickness of the hot-dip plated layer represented by t, an area fraction of a [Zn phase] of a plating microstructure in at least one of the cross sections is less than 20%.
Heating parts (212a to 212l, 222a to 222l) are brought into contact with planned heating regions (11a to 11l) of outermost electrical steel sheets (10a, 10b) of an electrical steel sheet group (100), to simultaneously pressurize and heat the planned heating regions (11a to 11l).
A wound core in which the average distance of first-group joint portions and the average distance of second-group joint portions determined under predetermined conditions are 25 mm or more.
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p. ex. à grains orientés
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateursAppareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
46.
WELD METAL, WELD JOINT, AND WELD STRUCTURAL OBJECT
A weld metal including C: 0.030% to 1.000%, Si: from 0.03% to 0.50%, Mn: 4.1% to 30.0%, P: 0% to 0.050%, S: 0% to 0.050%, Cu: 0% to 5.0%, Ni: 1.0% to 30.0%, Cr: 0% to 20.0%, Mo: 0% to 10.0%, Nb: 0% to 1.000%, V: 0% to 1.00%, Co: 0% to 1.00%, Pb: 0% to 1.00%, Sn: 0% to 1.00%, W: 0% to 20.0%, Mg: 0% to 5.0%, Al: 0% to 0.100%, Ca: 0% to 5.0%, Ti: 0% to 0.100%, B: 0% to 0.5000%, REM: 0% to 0.500%, Zr: 0% to 0.500%, N: 0% to 0.5000%, O: 0.0010% to 0.1500%, and balance: Fe and impurities, wherein, Mn+Ni: 5.0% or more, and Nb+Ti+V+Al: 0.005% or more.
In one slot (1121a, 1121b, 1221a, 1221b), first copper pipes (1111a to 1111f, 1211a to 1211f) and a second copper pipe (1111g, 1111h, 1211g, 1211h) are arranged. At each position (each y-coordinate) in a heating length direction in the one slot, the first copper pipe is at a position closest to a conductor plate M. In the one slot, the second copper pipe is at a position close to the conductor plate M relative to at least one first copper pipe. In the one slot, there is at least one second copper pipe electrically connected in series to the first copper pipe.
A welded joint 10 is a welded joint 10 in which a first steel sheet 1 and a second steel sheet 2 having a plating layer 4 at least on a part thereof are welded, Expression (1) is satisfied, where La is a length of a grain boundary at which an Fe—Al phase is present in grain boundaries and Lz is a length of a grain boundary at which an Fe—Zn phase is present in the grain boundaries, and an area ratio of an Mg—Zn phase in the plating layer 4 of a region from a starting point S to a position 1,000 μm away from the starting point S is 5% or more.
A welded joint 10 is a welded joint 10 in which a first steel sheet 1 and a second steel sheet 2 having a plating layer 4 at least on a part thereof are welded, Expression (1) is satisfied, where La is a length of a grain boundary at which an Fe—Al phase is present in grain boundaries and Lz is a length of a grain boundary at which an Fe—Zn phase is present in the grain boundaries, and an area ratio of an Mg—Zn phase in the plating layer 4 of a region from a starting point S to a position 1,000 μm away from the starting point S is 5% or more.
La
/
(
La
+
Lz
)
×
100
≥
20
(
1
)
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
B23K 26/322 - Assemblage tenant compte des propriétés du matériau concerné faisant intervenir des parties métalliques
B23K 35/22 - Baguettes, électrodes, matériaux ou environnements utilisés pour le brasage, le soudage ou le découpage caractérisés par la composition ou la nature du matériau
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
A welded joint 10 is a welded joint 10 in which a first steel sheet 1 and a second steel sheet 2 having a plating layer 4 at least on a part thereof are welded, in a back surface A of a surface having the weld bead portion 3, Expression (1) is satisfied, where L0 is a horizontal length of an observation field and L is a surface unevenness length of the plating layer 4 in the observation field, and an area ratio of an Mg—Zn phase in the plating layer 4 of the region from a starting point to a position 1,000 μm away from the starting point is 5% or more.
A welded joint 10 is a welded joint 10 in which a first steel sheet 1 and a second steel sheet 2 having a plating layer 4 at least on a part thereof are welded, in a back surface A of a surface having the weld bead portion 3, Expression (1) is satisfied, where L0 is a horizontal length of an observation field and L is a surface unevenness length of the plating layer 4 in the observation field, and an area ratio of an Mg—Zn phase in the plating layer 4 of the region from a starting point to a position 1,000 μm away from the starting point is 5% or more.
(L−L0)/L0×100≥3 (1)
C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
51.
FORMING METHOD FOR INSULATION COATING OF GRAIN ORIENTED ELECTRICAL STEEL SHEET
A grain oriented electrical steel sheet includes a base steel sheet, an oxide layer, and a tension-insulation coating. When a glow discharge spectroscopy is conducted in a region from a surface of the tension-insulation coating to an inside of the base steel sheet, a sputtering time Fe0.5 at which a Fe emission intensity becomes 0.5 times as compared with a saturation value thereof and a sputtering time Fe0.05 at which a Fe emission intensity becomes 0.05 times as compared with the saturation value satisfy 0.01<(Fe0.5—Fe0.05)/Fe0.5<0.35. Moreover, a magnetic flux density B8 in a rolling direction of the grain oriented electrical steel sheet is 1.90 T or more.
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 8/12 - 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 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
H01F 1/147 - Alliages caractérisés par leur composition
Provided is a frame member formed by hot-stamping a steel sheet. The frame member has a closed cross section portion in which a cross section perpendicular to a longitudinal direction is a closed cross section, and the closed cross section portion has at least two flat parts having a radius of curvature larger than a maximum external dimension of the cross section, and a recessed bead part formed between the two flat parts. The recessed bead part has a pair of wall portions which have a radius of curvature of 50 mm or greater, and protrude toward an inside of the closed cross section portion from end portions of the two flat parts facing each other via a pair of bent portions bent toward an inside of the closed cross section. A Vickers hardness of a thickness middle portion in the wall portion is 520 Hv or greater, a width of the wall portion is 0.5 times or greater and 2.5 times or less an effective width We, and a standard deviation ratio obtained by dividing a standard deviation of hardness frequency distribution in a surface layer portion in the wall portion by a standard deviation of hardness frequency distribution in the thickness middle portion in the wall portion is less than 1.0.
This structural member is a structural member including a plurality of high strength steel pipes, in which the high strength steel pipe has a quenched portion in a pipe center portion and a non-quenched portion extending over a whole circumference of at least one pipe end portion, in the quenched portion, an area ratio of a martensite is 90% or more, in the non-quenched portion, an area ratio of a ferrite is 30% or more and 100% or less, an area ratio of a pearlite is 0% or more and 70% or less, and a total area ratio of a martensite and a bainite is 0% or more and 10% or less, and the non-quenched portion has a welded portion that is welded to another member.
B62D 29/00 - Carrosseries caractérisées par le matériau utilisé
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 a front reference location (Pf) is an intersection point of a front imaginary line (L1) passing through a center axis (O) of a rotor core (31) and a front end of a front magnet (32f) and an outer circumferential surface of the rotor core (31) in a plane view, and a rear reference location (Pr) is an intersection point of a rear imaginary line (L2) passing through the center axis (O) of the rotor core (31) and a rear end of a rear magnet (32r) and the outer circumferential surface of the rotor core (31) in the plane view, a front end of a rear bridge (39r) is disposed at a position away from the rear reference location (Pr) to a front (F) by θf (radian) at a central angle about the center axis (O), and a rear end (39f1) of a front bridge (39f) is disposed at a position away from the front reference location (Pf) to the front (F) by 0 (radian) or more and θf (radian) or less at the central angle about the center axis O. However, θf satisfies Formulae (1) and (2) described below.
When a front reference location (Pf) is an intersection point of a front imaginary line (L1) passing through a center axis (O) of a rotor core (31) and a front end of a front magnet (32f) and an outer circumferential surface of the rotor core (31) in a plane view, and a rear reference location (Pr) is an intersection point of a rear imaginary line (L2) passing through the center axis (O) of the rotor core (31) and a rear end of a rear magnet (32r) and the outer circumferential surface of the rotor core (31) in the plane view, a front end of a rear bridge (39r) is disposed at a position away from the rear reference location (Pr) to a front (F) by θf (radian) at a central angle about the center axis (O), and a rear end (39f1) of a front bridge (39f) is disposed at a position away from the front reference location (Pf) to the front (F) by 0 (radian) or more and θf (radian) or less at the central angle about the center axis O. However, θf satisfies Formulae (1) and (2) described below.
0
<
θ
f
≤
(
θ
a
/
8
)
(
1
)
θ
a
=
2
π
/
(
Nslot
)
(
2
)
An Ni—Fe—Cr alloy welded joint that has excellent intergranular corrosion resistance is provided. The Ni—Fe—Cr alloy welded joint of the present disclosure includes a pair of base metals, and a weld metal formed between the pair of the base metals. The base metals each have a chemical composition consisting of, by mass %, C: 0.005 to 0.015%, Si: 0.05 to 0.50%, Mn: 0.05 to 1.50%, P: 0.030% or less, S: 0.020% or less, Cu: 1.00 to 5.00%, Ni: 30.00 to 45.00%, Cr: 18.00 to 30.00%, Mo: 2.00 to 4.50%, Ti: 0.50 to 2.00%, and N: 0.0010 to 0.0150%, with the balance being Fe and impurities. The occupancy ratio of Cr carbides in a heat affected zone of the base metals is 0.150% or less.
0 is a linear distance between ends of the boundary line in an observation region, and L is a length of the boundary line between the ends. The plated layer includes a first region where an Fe concentration is less than 5.0 mass %, a second region where an Fe concentration is 5.0 mass % or more and less than 30.0 mass %, and a third region where an Fe concentration is 30.0 mass % or more and 80.0 mass % or less, the first region including an Al-containing phase at an area fraction of 0% and less than 5%.
C22C 18/04 - Alliages à base de zinc avec l'aluminium comme second constituant majeur
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
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
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
C22C 30/06 - Alliages contenant moins de 50% en poids de chaque constituant contenant du zinc
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet caractérisé par le matériau de revêtement
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
C23C 28/02 - Revêtements uniquement de matériaux métalliques
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
0 is a linear distance between ends of the boundary line in an observation region, and L is a length of the boundary line between the ends. The plated layer includes a first region where an Fe concentration is less than 5.0 mass %, a second region where an Fe concentration is 5.0 mass % or more and less than 30.0 mass %, and a third region where an Fe concentration is 30.0 mass % or more and 80.0 mass % or less, the first region including an Al-containing phase at an area fraction of 5% or more.
C22C 18/04 - Alliages à base de zinc avec l'aluminium comme second constituant majeur
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
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
B32B 15/18 - Produits stratifiés composés essentiellement de métal comportant du fer ou de l'acier
B32B 15/20 - Produits stratifiés composés essentiellement de métal comportant de l'aluminium ou du cuivre
C22C 30/06 - Alliages contenant moins de 50% en poids de chaque constituant contenant du zinc
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
C23C 2/04 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet caractérisé par le matériau de revêtement
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
C23C 28/02 - Revêtements uniquement de matériaux métalliques
C23C 30/00 - Revêtement avec des matériaux métalliques, caractérisé uniquement par la composition du matériau métallique, c.-à-d. non caractérisé par le procédé de revêtement
58.
PRESS FORMING APPARATUS AND PRODUCTION METHOD FOR FORMED PRODUCT
A press forming apparatus includes a first die set and a second die set that are in positions to face each other in a press direction and perform relative movement in the press direction. The first die set includes a first support surface and a punch portion that protrudes from the first support surface. The second die set includes a press surface disposed so as to be out of position from a position to face the punch portion in the press direction, and a wall surface that is continuous with the press surface. When viewed from the second die set side in the press direction, the punch portion includes a side surface that faces the wall surface and that includes an opening opened on the wall surface side. At a forming bottom dead center of the relative movement between the first die set and the second die set in the press direction, the wall surface faces the side surface of the punch portion.
An austenitic stainless alloy welded joint which includes a weld metal excellent in weld hot cracking resistance, polythionic acid SCC resistance, naphthenic acid corrosion resistance, and age-toughness is provided. A weld metal (20) contains, in mass %, C: 0.020% or less, Si: 0.01 to 1.00%, Mn: 0.20 to 2.00%, P: 0.030% or less, S: 0.010% or less, Cr: 16.0 to 25.0%, Ni: 15.0 to 40.0%, Mo: 2.5 to 5.0%, Nb: 0.10 to 2.00%, N: 0.05 to 0.30%, sol. Al: 0.001 to 0.100%, and B: 0.0010 to 0.0050%, with F1 defined by Formula (1) being 2.30 or less, and F2 defined by Formula (2) being 2.5 or less.
An austenitic stainless alloy welded joint which includes a weld metal excellent in weld hot cracking resistance, polythionic acid SCC resistance, naphthenic acid corrosion resistance, and age-toughness is provided. A weld metal (20) contains, in mass %, C: 0.020% or less, Si: 0.01 to 1.00%, Mn: 0.20 to 2.00%, P: 0.030% or less, S: 0.010% or less, Cr: 16.0 to 25.0%, Ni: 15.0 to 40.0%, Mo: 2.5 to 5.0%, Nb: 0.10 to 2.00%, N: 0.05 to 0.30%, sol. Al: 0.001 to 0.100%, and B: 0.0010 to 0.0050%, with F1 defined by Formula (1) being 2.30 or less, and F2 defined by Formula (2) being 2.5 or less.
F
1
=
130
B
+
8
C
+
0
.
0
2
5
C
r
+
0.25
Mn
+
0.08
Mo
+
0.6
Nb
+
1
2
P
+
7
.
6
S
+
0.78
Si
+
0
.
0
12
W
(
1
)
F
2
=
[
Mo
]
H
/
[
Mo
]
L
(
2
)
A hot-dip plated steel sheet includes a hot-dip plated layer formed on a steel sheet. An absolute value of a difference in an area fraction of a first region between a pattern portion and a non-pattern portion is 30% or more. A cross section parallel to a surface is exposed at any position of 3t/4 position, t/2 position, or t/4 position from the surface of the hot-dip plated layer, virtual lattice lines are drawn on each of the cross sections, a region in which a proportion of an area fraction B of a [Zn phase] to a total area fraction A of the [Zn phase] and an [Al/MgZn2/Zn ternary eutectic structure] is 20% or more in each of a plurality of regions partitioned by the lattice lines is defined as the first region, and a region in which the proportion is less than 20% is defined as the second region.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet
A martensitic stainless steel material that achieves both a high yield strength and excellent SSC resistance is provided. The martensitic stainless steel material according to the present disclosure consists of, in mass %, C: 0.030% or less, Si: 1.00% or less, Mn: 1.00% or less, P: 0.030% or less, S: 0.0050% or less, Cu: 0.01 to 3.50%, Cr: 10.00 to 14.00%, Ni: 4.50 to 7.50%, Mo: 1.00 to 4.00%, Ti: 0.050 to 0.300%, V: 0.01 to 1.00%, Al: 0.001 to 0.100%, Co: 0.010 to 0.500%, Ca: 0.0005 to 0.0050%, Sn: 0.0005 to 0.0500%, N: 0.0010 to 0.0500%, O: 0.050% or less, and the balance: Fe and impurities, and has a yield strength of 758 MPa or more. Within this range, the contents of elements and the yield strength satisfy Formula (1) described in the description.
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
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 crankshaft with improved fatigue strength and reduced quench cracking is provided. The crankshaft (10) is a crankshaft including a pin (12) and pin tops (15), the pin (12) including a sliding portion (121) having a constant outer diameter, and fillets (122) formed contagiously with the sliding portion (121), each fillet (122) including a hardened region (122a) at its surface, the hardened region being a region with a hardness higher than the hardness of the core of the sliding portion (121) by 100 HV or more, the hardened region (122a) of the fillet (122) having a thickness (d1) not smaller than 12.0% of the radius (R) of the sliding portion (121), the pin tops (15) having a prior-austenite grain size not larger than 60 μm.
C21D 1/10 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire par induction électrique
C21D 9/30 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour arbres vilebrequinsTraitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour arbres à cames
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
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
A duplex stainless steel material that has high strength and excellent low-temperature toughness is provided. A duplex stainless steel material according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 0.20 to 1.00%, Mn: 0.50 to 7.00%, P: 0.040% or less, S: 0.0200% or less, Al: 0.100% or less, Ni: 4.20 to 9.00%, Cr: 20.00 to 30.00%, Mo: 0.50 to 2.00%, Cu: 0.50 to 3.00%, N: 0.150 to 0.350%, and V: 0.01 to 1.50%, with the balance being Fe and impurities. The duplex stainless steel material has a yield strength of 552 MPa or more, and when an austenite grain with a minor axis of 20 μm or more is defined as primary austenite and the balance of austenite is defined as secondary austenite, the microstructure is composed of, in volume ratio, ferrite in an amount of 35 to 55%, primary austenite in an amount of 40 to 55%, and secondary austenite in an amount of 5 to 20%.
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
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
This hot-stamped product includes a base steel and a plated layer formed on a surface of the base steel, and the plated layer has a chemical composition containing, in mass %, Sc: 0.000010 to 3.0%, Fe: more than 15.0% and 95.0% or less, Al: 0 to 80.0%, and Si: 0 to 20.0%, and Mg, Ca, La, Ce, Y, Cr, Ti, Ni, Co, V, Nb, Cu, Mn, Sr, Sb, Pb, B, Li, Zr, Mo, W, Ag, P, Sn, Bi, and In at a total amount of 0% to 5.0%, and a remainder: 5.0% or more of Zn, and impurities, and includes an n-Zn phase near a surface of the plated layer.
The steel sheet processing apparatus includes a laser irradiation unit configured to form a groove on a surface of a steel sheet, an illumination unit configured to irradiate the groove with pulsed light, an imaging unit configured to image the groove irradiated with the pulsed light with an exposure time longer than an irradiation time of the pulsed light to generate a captured image, a determination unit configured to make a determination based on the captured image, and a processing control unit configured to control an operation of the laser irradiation unit. The determination unit determines whether the groove satisfies a first standard on the basis of the captured image. In a case where the determination unit determines that the groove does not satisfy the first standard, the processing control unit controls the laser irradiation unit so that the groove formed by the laser irradiation unit satisfies the first standard.
B23K 26/364 - Gravure au laser pour faire une rainure ou une saignée, p. ex. pour tracer une rainure d'amorce de rupture
B23K 26/03 - Observation, p. ex. surveillance de la pièce à travailler
B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
An austenitic stainless alloy material that has excellent creep strength and excellent stress relaxation cracking resistance is provided. An austenitic stainless alloy material according to the present disclosure contains, in mass %, C: 0.03 to 0.12%, Si: 0.05 to 2.00%, Mn: 0.05 to 3.00%, P: 0.03% or less, S: 0.010% or less, Ni: 18.0 to less than 25.0%, Cr: 22.0 to less than 30.0%, Co: 0.04 to 0.80%, Ti: 0.002 to 0.010%, Nb: 0.1 to 1.0%, V: 0.01 to 1.00%, Al: 0.001 to less than 0.030%, and N: 0.10 to 0.35%. The number density of precipitates having an equivalent circular diameter of 0.5 to 2.0 μm is 5000 pieces/mm2 or more.
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
B21C 23/08 - Fabrication de fils, de barres, de tubes
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
traverse hardening device performs traverse hardening on a shaft-like body in which a large diameter portion and a small diameter portion are connected via a level difference portion. The device includes a plurality of divided coils which are annularly disposed around a central axis and through which a high-frequency current flows; and a coil drive unit that brings the divided coils close to and away from the central axis. Each of the divided coils includes a plurality of protruding coil portions each having a shape protruding in a direction away from the central axis, and the protruding coil portions are disposed so as to at least partially overlap each other in an extending direction of the central axis and to overlap each other in a radial direction around the central axis.
C21D 1/10 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire par induction électrique
C21D 9/28 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour arbres lisses
A Fe—Cr—Ni alloy material that has high strength and reduced strength anisotropy is provided. A Fe—Cr—Ni alloy material according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 0.01 to 1.00%, Mn: 0.01 to 2.00%, P: 0.030% or less, S: 0.0050% or less, Ni: 29.0 to 36.5%, Cr: 23.0 to 27.5%, Mo: 2.00 to 6.00%, Al: 0.01 to 0.30%, rare earth metal: 0.016 to 0.100%, N: 0.220 to 0.500%, and O: 0.010% or less, with the balance being Fe and impurities, and satisfies Formula (1). In a microstructure, a standard deviation of the grain size numbers of austenite grains is 0.80 or less. The tensile yield strength is 758 MPa or more:
A Fe—Cr—Ni alloy material that has high strength and reduced strength anisotropy is provided. A Fe—Cr—Ni alloy material according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 0.01 to 1.00%, Mn: 0.01 to 2.00%, P: 0.030% or less, S: 0.0050% or less, Ni: 29.0 to 36.5%, Cr: 23.0 to 27.5%, Mo: 2.00 to 6.00%, Al: 0.01 to 0.30%, rare earth metal: 0.016 to 0.100%, N: 0.220 to 0.500%, and O: 0.010% or less, with the balance being Fe and impurities, and satisfies Formula (1). In a microstructure, a standard deviation of the grain size numbers of austenite grains is 0.80 or less. The tensile yield strength is 758 MPa or more:
3
×
Ni
-
2
×
Cr
-
150
×
N
<
15.
(
1
)
where, a content of a corresponding element in percent by mass is substituted for each symbol of an element in Formula (1).
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
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
E21B 17/00 - Tiges ou tubes de forageTrains de tiges souplesTiges d'entraînementMasses-tigesTiges de pompageTubagesColonnes de production
An aluminum-plated steel sheet for hot stamping, including: a base steel sheet; an aluminum-plated layer provided on at least one surface of the base steel sheet; and a surface treatment film provided on the aluminum-plated layer, in which the surface treatment film contains needle-like compounds X, the needle-like compounds X contain 70% or more in number % of needle-like compounds X1 in which proportion of a major axis to a minor axis of the compound X1 is 4 or more and 50 or less and the compounds X1 have a hexagonal crystal structure, and the compounds X1 contain 70% or more in number % of a needle-like compounds X2 having a smaller angle of 0 degrees or more and 40 degrees or less among angles at an intersection point of a straight line parallel to the major axis and a straight line parallel to an aluminum-plated layer surface.
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
A traverse hardening device performs traverse hardening on a shaft-like body in which a large diameter portion having a relatively large outer diameter and a small diameter portion having a relatively small outer diameter are connected via a level difference portion. The device includes: first divided coils annularly arranged around a motion center line at a first position on the motion center line; second divided coils annularly arranged around the motion center line at a second position different from the first position on the motion center line; a first divided coil drive unit configured to bring the first divided coils close to and away from the motion center line; a second divided coil drive unit configured to bring the second divided coils close to and away from the motion center line; and a control unit for the first divided coil drive unit and the second divided coil drive unit.
H05B 6/10 - Appareils de chauffage par induction, autres que des fours, pour des applications spécifiques
C21D 1/10 - Durcissement de surface par application directe d'énergie électrique ou ondulatoireDurcissement de surface par radiation particulaire par induction électrique
This hot-stamp formed body is a hot-stamp formed body comprising a steel sheet, in which the steel sheet has a predetermined chemical composition, an average B concentration in a region from a depth of 5.0 μm from a surface of the steel sheet to a depth of 25.0 μm from the surface is 0.700 times or less than a B concentration at a position of a depth of 100 μm from the surface, an average B concentration in a region from a depth of 0.5 μm from the surface to a depth of 4.0 μm from the surface is 1.600 times or more than the B concentration at the position of the depth of 100 μm from the surface, and an average O concentration in the region from the depth of 0.5 μm from the surface to the depth of 4.0 μm from the surface is more than 0.0150 mass %.
An outer panel includes a ridgeline and a surface portion adjacent to both sides of the ridgeline on an outer surface. The outer panel has a sheet thickness of less than 0.6 mm and an attainable yield stress of 360 MPa or more. The surface portion includes an adjacent region adjacent to the ridgeline and a separation region adjacent to the adjacent region on an opposite side of the ridgeline. Evaluations of surface properties of the adjacent region and the separation region are consistent with each other.
There is provided a seamless steel pipe that has high strength and excellent low-temperature toughness and has hydrogen embrittlement resistance properties. The seamless steel pipe has a chemical composition described in the specification, and the chemical composition satisfies [5C+Mo+Cr≥1.00], and satisfies [GN−1.96×(Mn+70P+100N)≥7.50] and [GN−1.37×(Mn+85P−30Ca)≥8.90] in conjunction with a prior-y grain size number GN. The seamless steel pipe has a tensile strength of 1200 MPa or more, and a critical hydrogen concentration of 2.5 ppm or more.
A steel sheet according to an aspect of the present invention has a predetermined chemical composition, in which a metallographic structure in a thickness ¼ portion includes, by volume percentage, ferrite: 10% or more and less than 50%, granular bainite: 5% or more and less than 40%, martensite: 30% or more and 55% or less, upper bainite and lower bainite: less than 30% in total, pearlite: less than 10%, and residual austenite: less than 5%, a proportion of the number of the martensites adjacent to the ferrite to the number of the metallographic structures adjacent to the ferrite is 30% or less in the thickness ¼ portion, and the difference between the absolute maximum value and the absolute minimum value of Vickers hardness at a load of 50 gf obtained at an interval of 30 μm from a position of a depth of 100 μm in a sheet thickness direction from a surface of the steel sheet as a starting point to a thickness middle portion position is 60 HV or less.
What is provided is a steel sheet having a predetermined chemical composition, in which a microstructure includes, by area ratio, ferrite: 5.0% or less, martensite and tempered martensite: more than 90.0% in total, and a remainder: one or two or more of bainite, pearlite, and residual austenite, in a cross section in a sheet thickness direction, regions having an Mn content of 1.1×[Mnave] or more, where the [Mnave] is an average Mn content throughout the sheet thickness direction, have a number density of 5.0×10−4 pieces/μm2 or more and are present so that the average interval between closest regions having an Mn content of 1.1×[Mnave] or more is 10.0 μm or less, and a tensile strength is 1,500 MPa or more.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
This impact-absorbing member for an automobile door is an impact-absorbing member for an automobile door formed from a blank, which is a single-piece blank or a tailored blank, and includes: a connection band portion extending in a first direction; and at least three connected portions each having one end connected to the connection band portion and extending in a second direction intersecting the first direction, in which the connected portion has an impact-absorbing portion that is a closed cross-sectional structure.
A duplex stainless steel material according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 0.20 to 1.00%, Mn: 0.50 to 7.00%, P: 0.040% or less, S: 0.020% or less, Al: 0.100% or less, Ni: 4.20 to 9.00%, Cr: 20.00 to 30.00%, Mo: 0.50 to 2.00%, Cu: 1.50 to 4.00%, N: 0.150 to 0.350%, and V: 0.01 to 1.50%, with the balance being Fe and impurities, and satisfies Formula (1) described in the description. A microstructure consists of, in volume ratio, ferrite in an amount of 30.0 to 70.0% with the balance being austenite. The yield strength is 586 MPa or more. A number density of Cu precipitates having a major axis of 50 nm or less in the austenite is 150 to 1500/μm3.
A grain-oriented electrical steel sheet includes a base steel sheet and an insulation coating arranged in contact with the base steel sheet. When the grain-oriented electrical steel sheet is viewed in a cross section whose cutting direction is parallel to a thickness direction and perpendicular to a transverse direction, the base steel sheet includes an internally oxidized SiO2 within a range of 2.0 μm from an interface with the insulation coating toward a thickness direction.
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours 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
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
79.
HOT PRESS APPARATUS, METHOD FOR MANUFACTURING HOT PRESS-FORMED PRODUCT, AND HOT PRESS-FORMED PRODUCT
Provided is a hot press apparatus (1000) including a punch (1200), a die (1300), and a die pad (1100), in which a groove portion (1220) is provided in a top surface (1210) of the punch (1200), in which, in a cross section in a press direction (P), an angle between a wall surface of the groove portion (1220) and the press direction (P) is 2° to 8°, in which a refrigerant flow path is provided inside the punch (1200), in which the die (1300) and the die pad (1100) are disposed to face the punch (1200) in the press direction (P), the die pad (1100) is disposed facing the top surface (1210) of the punch (1200), and a protrusion (1120) is provided at a position on the die pad (1100) opposing the groove portion (1220) in the press direction (P), and the protrusion (1120) has an inverted shape of the groove portion (1220).
A cooling structure according to an aspect of the present invention includes a press forming member including a groove part and a bank part provided around the groove part, a flow path upper lid forming a flat cooling surface, and a laser weld forming a flow path through which a cooling liquid is capable of flowing, in which the press forming member and the flow path upper lid are plated steel sheets including a Zn-based plating and an inorganic film or a resin film provided as a chemical conversion coating film, the inorganic film contains a Si-based component or a Zr-based component in an amount of 50 mass % or more, the flow path has a parallel flow path portion, in a part or the whole of the parallel flow path portion, an interval between adjacent partial flow paths is 20 mm or less, and the ratio of a length of a region in which a blow hole and a pit are formed is 0.2 or less.
H01M 10/6556 - Composants solides comprenant des canaux d'écoulement ou des tubes pour un échange de chaleur
H01M 10/613 - Refroidissement ou maintien du froid
H01M 10/6568 - Liquides caractérisés par des circuits d'écoulement. p. ex. boucles, situés à l'extérieur des éléments ou des boîtiers des éléments
81.
ROTARY ELECTRIC MACHINE, NON-ORIENTED ELECTRICAL STEEL SHEET, LAMINATED CORE, METHOD FOR MANUFACTURING ROTARY ELECTRIC MACHINE, AND METHOD FOR MANUFACTURING LAMINATED CORE
This rotary electric machine includes a stator, a rotor, and a housing that houses the stator and the rotor, A which is an {111} <211> orientation strength of a base steel sheet of a non-oriented electrical steel sheet included in the stator is less than 15, B which is an {111} <211> orientation strength of a base steel sheet of the non-oriented electrical steel sheet included in the rotor is 2 to 30, the A and the B satisfy a relationship of B/A>1.0, C which is an {411} <011> orientation strength of a base steel sheet of the non-oriented electrical steel sheet included in the stator is 2 to 50, D which is an {411} <011> orientation strength of a base steel sheet of the non-oriented electrical steel sheet included in the rotor is 1 to 40, and the C and D satisfy a relationship of C/D>1.0.
H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/12 - Alliages ferreux, p. ex. aciers alliés contenant du tungstène, du tantale, du molybdène, du vanadium ou du niobium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
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
H01F 1/147 - Alliages caractérisés par leur composition
In this wound core, the average distance of first-group joint portions and the average distance of second-group joint portions determined under predetermined conditions satisfy predetermined conditions.
A non oriented electrical steel sheet includes, as a chemical composition, by mass %, 1.0% or more and 5.0% or less of Si, wherein a sheet thickness is 0.10 mm or more and 0.35 mm or less, an average grain size is 30 μm or more and 200 μm or less, an X value defined by X=(2×B50L+B50C)/(3×IS) is 0.800 or more, and an iron loss W10/1k is 80 W/kg or less.
This cold-rolled steel sheet has a predetermined chemical composition, in which, in a case where a range of ⅛ to ⅜ of a sheet thickness from a surface in a sheet thickness direction is defined as a t/4 portion and a range of 20 μm from the surface in the sheet thickness direction is defined as a surface layer portion, a microstructure at the t/4 portion includes, by volume percentage, 0% or more and 10.0% or less of retained austenite and 90.0% or more and 100% or less of one or two of martensite and tempered martensite, a ratio of a dislocation density of the surface layer portion to a dislocation density of the t/4 portion is 0.80 or more, a ratio of a hardness of the surface layer portion to a hardness of the t/4 portion is 0.90 or more, and a tensile strength of the cold-rolled steel sheet is 1,310 MPa or more.
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
A grain-oriented electrical steel sheet that can reduce iron loss and improve the adhesion of a secondary coating is provided. In a grain-oriented electrical steel sheet of the present embodiment, when a maximum emission intensity of Mg is defined as IMg/Mg, and an emission intensity of Sn at a sputtering time at which Mg exhibits the maximum emission intensity is defined as ISn/Mg, in glow emission spectroscopic spectra obtained by performing glow discharge optical emission spectroscopy in a thickness direction of a base steel sheet from a surface of a secondary coating, the glow emission spectroscopic spectra showing the relation of an emission intensity of Mg and an emission intensity of Sn with respect to a sputtering time, an intensity ratio Iref defined by Formula (1) is 0.0000 to 0.0006, and an iron loss W17/50 is less than 0.90 W/kg.
A grain-oriented electrical steel sheet that can reduce iron loss and improve the adhesion of a secondary coating is provided. In a grain-oriented electrical steel sheet of the present embodiment, when a maximum emission intensity of Mg is defined as IMg/Mg, and an emission intensity of Sn at a sputtering time at which Mg exhibits the maximum emission intensity is defined as ISn/Mg, in glow emission spectroscopic spectra obtained by performing glow discharge optical emission spectroscopy in a thickness direction of a base steel sheet from a surface of a secondary coating, the glow emission spectroscopic spectra showing the relation of an emission intensity of Mg and an emission intensity of Sn with respect to a sputtering time, an intensity ratio Iref defined by Formula (1) is 0.0000 to 0.0006, and an iron loss W17/50 is less than 0.90 W/kg.
Iref=ISn/Mg/IMg/Mg (1)
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C21D 6/00 - Traitement thermique des alliages ferreux
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 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
H01F 1/147 - Alliages caractérisés par leur composition
86.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND FORMATION METHOD FOR INSULATING COATING
This grain-oriented electrical steel sheet has: a base steel sheet; and an insulating coating formed on a surface of the base steel sheet, in which the insulating coating has: an intermediate layer formed on the base steel sheet side and containing an amorphous iron phosphate; and a tension coating layer formed on a surface side of the insulating coating, the intermediate layer has an average thickness of 0.10 to 3.0 μm, the tension coating layer contains a metal phosphate and silica, and the amount of the silica in the tension coating layer is 20 to 60 mass %.
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 particuliersFours à cet effet pour tôles
H01F 1/147 - Alliages caractérisés par leur composition
87.
OVERLAPPED BLANK FOR HOT STAMPING AND OVERLAPPED HOT STAMPED COMPONENT
To improve both the slow temperature increasing rate of an overlapped part and the difference in temperature increasing rate between an overlapped part and a one-sheet part when an Al-based plated steel sheet is used as a raw material. An overlapped blank for hot stamping according to the present invention includes: a first Al-based plated steel sheet having a sheet thickness t1; and a second Al-based plated steel sheet having a sheet thickness t2, the second Al-based plated steel sheet overlapped and welded on the first steel sheet, having a smaller area than the first steel sheet, and including a carbon-based black coating as an upper layer of an Al-based plated layer on the side not in contact with the first Al-based plated steel sheet, in which the overlapped blank for hot stamping satisfies (1) Expression to (5) Expression.
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
B32B 37/04 - Procédés ou dispositifs pour la stratification, p. ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par la fusion partielle d'au moins une couche
88.
Laminated core and method for manufacturing laminated core
A laminated core 10 includes electrical steel sheets 1 and adhesive insulating coatings 2 alternately stacked and has a lamination direction D tensile strength of adhesive bond of 20 MPa or more measured under a 25° C. condition after a complete reaction of each adhesive insulating coating 2. A method for manufacturing a laminated core 10 includes a punching step of punching an electrical steel sheet coated with an adhesive insulating coating 2 to form an electrical steel sheet 1, an accommodating step of stacking and accommodating electrical steel sheets 1 in a die after the punching step, a low-pressure bonding step of heating the electrical steel sheets 1 in the die at a surface temperature of 60° C. or more and 200° C. or less and bonding the adjacent electrical steel sheets 1 by pressurization at 3.0 MPa or less to form a laminated core 10, and a take-out step of taking out the laminated core 10 from the die after the low-pressure bonding step.
The plated steel sheet comprises: a steel sheet; and a plated layer arranged on a surface of the steel sheet, wherein the plated layer comprises, as a chemical composition, Al: 10.0% to 25.0%, Mg: 3.0% to 10.0%, Fe: 0.01% to 2.00%, Si: more than 0.00% and 2.00% or less, and a remainder comprising Zn and impurities, and when the plated layer is subjected to grazing incidence X-ray diffraction measurement under conditions where Cu-Kα ray is used, an acceleration voltage as an X-ray output is 50 kV, and an X-ray incident angle against a surface of the plated layer is 1°, an X-ray diffraction intensity ratio between a (300) plane of a Mg21Zn25 phase and a (002) plane of an η-Zn phase (I (Mg21Zn25)/I (η-Zn)) is more than 0.3.
C22C 18/04 - Alliages à base de zinc avec l'aluminium comme second constituant majeur
C23C 2/00 - Procédés de trempage à chaud ou d'immersion pour appliquer le matériau de revêtement à l'état fondu sans modifier la forme de l'objet immergéAppareils à cet effet
A hearth roll for a continuous annealing furnace, the hearth roll comprising a thermal spray coating on a surface of the hearth roll, wherein the thermal spray coating comprises main components consisting of a Co-based alloy, a carbide of a transition metal, and a double oxide; and impurities, the double oxide consists of one or two types of a first double oxide consisting of Al and a rare earth element and a second double oxide consisting of a transition metal and a rare earth element, and when the main components are 100 mass %, a content of the Co-based alloy is 25 mass % or more and 50 mass % or less, a content of the carbide is 5 mass % or more and 30 mass % or less, and a content of the double oxide is 20 mass % or more and 45 mass % or less.
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
C21D 9/56 - Fours continus pour bandes ou fils métalliques
C23C 4/073 - Matériaux métalliques contenant des alliages MCrAl ou MCrAlY où M est le nickel, le cobalt ou le fer, avec ou sans éléments non métalliques
C23C 4/14 - Revêtement par pulvérisation du matériau de revêtement à l'état fondu, p. ex. par pulvérisation à l'aide d'une flamme, d'un plasma ou d'une décharge électrique caractérisé par le procédé de pulvérisation pour revêtir des objets allongés
An eddy current deceleration device includes two deceleration device main bodies and a control unit. The two deceleration device main bodies each include a braking member that has a tubular shape and a magnet. The braking member is fixed to a propeller shaft. The magnet faces toward the braking member in a radial direction of the braking member. The control unit controls braking states of the two deceleration device main bodies. The two deceleration device main bodies are arranged in different positions in an axial direction of the propeller shaft.
H02K 7/104 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des freins à courants de Foucault
92.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
A grain-oriented electrical steel sheet includes a base steel sheet and an insulation coating arranged in contact with the base steel sheet. When the grain-oriented electrical steel sheet is viewed in a cross section whose cutting direction is parallel to a thickness direction and perpendicular to a transverse direction, the base steel sheet includes an internally oxidized SiO2 in an interface region with the insulation coating, the insulation coating includes voids and iron and phosphorus-containing oxides, an area fraction of the voids is 0.010 to 3.0% in an area of an insulation coating interface region, and an area fraction of the iron and phosphorus-containing oxides is 0.10 to 5.0% in an area of the insulation coating.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
A wheel includes a boss, a rim, and a web. The rim includes a tread and a flange. A center of the boss in an axial direction of the wheel is disposed closer to the flange than a center of the rim in the axial direction. The web has a plate-thickness center line having a linear shape when the wheel is viewed in a longitudinal section. In a case where an angle formed by the plate-thickness center line with the axial direction is taken as α, a distance in the axial direction from a side face of the rim to an outer end of the plate-thickness center line is taken as Pw, a length of the rim in the axial direction is taken as Wr, and Pw/Wr is taken as L, the wheel satisfies L≥0.053α−3.8626, where the angle α is 90° or less.
A grain-oriented electrical steel sheet includes a base steel sheet and an insulation coating arranged in contact with the base steel sheet. When the grain-oriented electrical steel sheet is viewed in a cross section whose cutting direction is parallel to a thickness direction and perpendicular to a transverse direction, the Ibase which is an average quantitative value of Fe in the base steel sheet internal region and the Icoating which is an average quantitative value of Fe in the insulation coating internal region satisfy 0.010≤Icoating/Ibase≤0.50.
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C21D 6/00 - Traitement thermique des alliages ferreux
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 particuliersFours à cet effet pour tôles
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
95.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
In the grain-oriented electrical steel sheet according to an aspect of the present invention, on a surface of the grain-oriented electrical steel sheet, a tensile stress existence rate which is a rate of a part which exists in a non-single period and where a tensile stress exists with respect to a sheet thickness direction among a total extension of magnetic domain control treatment lines which forms an angle of 0° to 45° with respect to an orthogonal-to-rolling direction and are arranged in a rolling direction is 50% or more in a first region which is a region where a β angle which is a deviation angle of a grain from a Goss orientation around an axis in the orthogonal-to-rolling direction is 1° or less, the tensile stress existence rate is less than 50% in a second region where the β angle is more than 2°, and the tensile stress has an absolute maximum value of 40 MPa or more.
A titanium alloy sheet includes a predetermined chemical composition, in a case where a crystal orientation of an α-phase is expressed by Euler angles g={φ1, ϕ, φ2} according to Bunge notation, a maximum integration orientation expressed by a crystal orientation distribution function f(g) is in a range of φ1: 0° to 30°, ϕ: 60° to 90°, and φ2: 0° to 60°, a maximum integration in the maximum integration orientation is 10.0 or more, a maximum integration in ranges of φ1: 70° to 90°, ϕ: 70° to 90°, and φ2: 0° to 60° and φ1: 70° to 90°, ϕ: 10° to 30°, and φ2: 0° to 60° is 2.5 or less, and YR in a sheet width direction is 0.99 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
C22F 1/18 - Métaux réfractaires ou à point de fusion élevé ou leurs alliages
A laminated core includes a plurality of electrical steel sheets laminated on each other; and an insulating coating that is provided between the electrical steel sheets adjacent to each other in a laminating direction and bonds the electrical steel sheets to each other, wherein the insulating coating has a hardness of 200 to 300 MPa.
The martensitic stainless steel material according to the present disclosure satisfies a chemical composition described herein, and satisfies Formula (1). The yield strength is 758 to less than 862 MPa. In the martensitic stainless steel material, a number ratio of Mg oxides having an equivalent circular diameter of 2.0 μm or more with respect to Ca oxides having an equivalent circular diameter of 2.0 μm or more, Ca sulfides having an equivalent circular diameter of 2.0 μm or more, and the Mg oxides having an equivalent circular diameter of 2.0 μm or more is 40.0% or more.
The martensitic stainless steel material according to the present disclosure satisfies a chemical composition described herein, and satisfies Formula (1). The yield strength is 758 to less than 862 MPa. In the martensitic stainless steel material, a number ratio of Mg oxides having an equivalent circular diameter of 2.0 μm or more with respect to Ca oxides having an equivalent circular diameter of 2.0 μm or more, Ca sulfides having an equivalent circular diameter of 2.0 μm or more, and the Mg oxides having an equivalent circular diameter of 2.0 μm or more is 40.0% or more.
0.001
≤
Ca
+
Mg
≤
0.005
(
1
)
The martensitic stainless steel material according to the present disclosure satisfies a chemical composition described herein, and satisfies Formula (1). The yield strength is 758 to less than 862 MPa. In the martensitic stainless steel material, a number ratio of Mg oxides having an equivalent circular diameter of 2.0 μm or more with respect to Ca oxides having an equivalent circular diameter of 2.0 μm or more, Ca sulfides having an equivalent circular diameter of 2.0 μm or more, and the Mg oxides having an equivalent circular diameter of 2.0 μm or more is 40.0% or more.
0.001
≤
Ca
+
Mg
≤
0.005
(
1
)
Where, a content of a corresponding element in percent by mass is substituted for each symbol of an element in Formula (1).
C22C 38/52 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cobalt
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
There is provided a cutting method for cutting a workpiece using a cutting tool comprising a die and a punch, including: arranging the workpiece between the die and the punch, and in a state in which a wedge-shaped first cutting part of the die and a wedge-shaped second cutting part of the punch are opposed, pushing the punch relatively to the die side to cut the workpiece; wherein: a front end angle θ1 of the first cutting part and a front end angle θ2 of the second cutting part are each 10° or more and 120° or less, and a front end radius R1 of the first cutting part and a front end radius R2 of the second cutting part are each 0.5% or more and 35.0% or less of a sheet thickness.
This hot-rolled steel sheet has a predetermined chemical composition and a microstructure, in which, in a texture of a region from a surface to the depth of ⅛ of the sheet thickness from the surface, pole densities of {001}<110>, {111}<110>, and {112}<110> orientation groups are 2.0 to 8.0, in a texture of a region from the depth of ⅛ of the sheet thickness from the surface to a depth of ½ of the sheet thickness from the surface, a pole density of a {110}<112> orientation is 2.0 to 4.0, and a tensile strength is 980 MPa or more.
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 particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
brevets
