40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Microbubble generators for use in metalworking machines and
tools; ultrasonic cleaning apparatus for cleaning metal
surfaces; metal surface pickling apparatus; metalworking
machines and tools for metal surface treatment; metalworking
machines and tools. Treatment and coating of metal surfaces; processing and
treatment of metal surfaces; metal surface treatments;
degreasing treatment of metals; pickling treatment of
metals; metal treating; recycling of waste and trash.
2.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCTION OF SAME
The present invention has as its object to provide grain-oriented electrical steel sheet further improved in core loss in control of magnetic domains by forming laser grooves in steel sheet after decarburization annealing and before finish annealing.
The present invention has as its object to provide grain-oriented electrical steel sheet further improved in core loss in control of magnetic domains by forming laser grooves in steel sheet after decarburization annealing and before finish annealing.
The grain-oriented electrical steel sheet according to the present invention is a grain-oriented electrical steel sheet having a plurality of grooves on the surface of the steel sheet and provided with a glass coating on that surface, which grain-oriented electrical steel sheet characterized in that an absolute value of an angle θ formed by a direction perpendicular to both a rolling direction and sheet thickness direction of the steel sheet and a longitudinal direction of the grooves is 0 to 40°, a width W of the grooves is 20 to 300 μm, a depth D of the grooves is 10 to 40 μm, and a pitch P of the grooves in the rolling direction is 1.0 to 30 mm and in that the relationship of formula (1) is satisfied when a thickness of the glass coating of flat parts of the steel sheet surface (parts other than grooves) is t1 and the thickness of the glass coating at the deepest parts of the grooves is t2:
The present invention has as its object to provide grain-oriented electrical steel sheet further improved in core loss in control of magnetic domains by forming laser grooves in steel sheet after decarburization annealing and before finish annealing.
The grain-oriented electrical steel sheet according to the present invention is a grain-oriented electrical steel sheet having a plurality of grooves on the surface of the steel sheet and provided with a glass coating on that surface, which grain-oriented electrical steel sheet characterized in that an absolute value of an angle θ formed by a direction perpendicular to both a rolling direction and sheet thickness direction of the steel sheet and a longitudinal direction of the grooves is 0 to 40°, a width W of the grooves is 20 to 300 μm, a depth D of the grooves is 10 to 40 μm, and a pitch P of the grooves in the rolling direction is 1.0 to 30 mm and in that the relationship of formula (1) is satisfied when a thickness of the glass coating of flat parts of the steel sheet surface (parts other than grooves) is t1 and the thickness of the glass coating at the deepest parts of the grooves is t2:
t2/t1<1.00 formula (1)
This hot-rolled steel sheet has a desired 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, an area ratio of a region where a Ni concentration is 0.2 mass % or more is 10.0% or more, an area ratio of a region where an O concentration is 3.0 mass % or more is 3.0% to 50.0%, and a maximum value of sphere equivalent diameters of oxides is 5.00 μm or less, and a tensile strength is 980 MPa or more.
Provided are a die for hot press molding, a hot press device, and a method for manufacturing a hot press molded article with which it is possible to more reliably suppress the occurrence of breakage when drawing is performed by hot pressing. The die 24 is for drawing a heated blank 30 by hot pressing. The die 24 comprises: a first die 26 that comes into contact with a first surface 30F of the blank 30; and a second die 28 that is disposed facing the first die 26 and that comes into contact with a second surface 30R of the blank 30. The first die 26 has an inner die 33 and an outer die 35. The inner die 33 protrudes with respect to the second die 28. The outer die 35 is recessed with respect to the second die 28 and is provided so as to surround the inner die 33. The second die 28 has an inner recess 46, which is recessed with respect to the first die 26, and a outer circumferential protrusion 48, which protrudes with respect to the first die 26. The inner recess 46 is provided at a position facing the inner die 33, and the outer circumferential protrusion 48 is provided at a position facing the outer die 35 so as to surround the inner recess 46.
Provided are a die for hot press molding and a method for manufacturing a hot press molded article, by which it is possible to more reliably suppress the generation of wrinkles if press forming by hot pressing. A die 24 is for carrying out press forming of a heated blank 30 by hot pressing, and comprises: a first die 26 having a first forming surface 26S and an outer circumferential surface 44 disposed outside the first forming surface 26S; and a second die 28 disposed facing the first die 26 and having a second forming surface 28S corresponding to the first forming surface 26. A guide section 45 is provided at the outer circumferential surface 44. The guide section 45 protrudes with respect to the second die 28 and has an apex 47 extending in the direction from the outer edge of the first die 26 toward the inside of the first die 26. The guide section 45 has a pair of guide surfaces 45S inclined from the apex 47 toward the sides of the outer circumferential surface 44 intersecting the extension direction of the apex 47.
This automobile roof structure comprises an outer panel, a pair of roof rails connected to the outer panel, and a plurality of connecting members connecting the pair of roof rails. The plurality of connecting members include: three main connecting members respectively disposed in a front end position and a rear end position of the roof rail in the vehicle front-rear direction, and in an intermediate position on the front side of the center; and sub-connecting members disposed between the three main connecting members in the vehicle front-rear direction. A front-side sub-connecting member is disposed between the intermediate position and the front end position as a sub-connecting member, and a rear-side sub-connecting member is disposed between the intermediate position and the rear end position as a sub-connecting member. The number of the rear-side sub-connecting members is larger than the number of the front-side sub-connecting members, and the main connecting members are formed of a material having a tensile strength greater than that of the sub-connecting members. The outer panel has a plate thickness of 0.6 mm or less.
TT satisfies 0.300/mm2AA/mm2BB/mm2AABB) ≤ 0.40 Here, each element symbol in formula (1) is substituted with the content of the corresponding element in units of mass%. In formula (1), α = 2 when B_eff defined in the description is 0.0005 or more, and α = 1 when B_eff is less than 0.0005.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
A rail according to the present disclosure has a chemical composition containing, by mass%, 0.55 to 1.20% of C, 0.10 to 2.00% of Si, 0.10 to 2.00% of Mn, 0.0020% to less than 0.0200% of Sn, 0.0040% or less of O, 0.025% or less of P, 0.025% or less of S, 1.0000% or less of Al, and 0.0020% to 0.0200% of N, with the balance being Fe and impurities, the chemical composition satisfying formula (1). In a metal structure of a head surface portion from an outline surface of the rail head portion to a depth position of 20 mm, the area ratio of a pearlite structure is 95% or greater, and the Vickers hardness is 230 HV or greater. (1): 0.05 x 10-5≤ Sn x (O/4) ≤ 1.50 x 10-5 In formula (1), Sn and O are substituted for the contents, in mass%, of the corresponding elements in the chemical composition of a rail 1.
The present invention provides a die for performing drawing by hot pressing and a method for manufacturing a hot-pressed drawn article, both of which make it possible to more reliably suppress the occurrence of wrinkles. A die 24 comprises: a first die 26 that comes into contact with a first surface 30F of a blank 30; a second die 28 that comes into contact with a second surface 30R of the blank 30; and a holder 58 that is disposed outside the second die 28 so as to face the first die 26 and that comes into contact with the second surface 30R of an outer edge part 30P of the blank 30. The holder 58 has a plurality of first holder parts 60 and a plurality of second holder parts 62. The outer edge part 30P is disposed between each of the plurality of first holder parts 60 and the first die 26. Each of the plurality of second holder parts 62 is disposed at a position farther from the first die 26 than the plurality of first holder parts 60, and comes into contact with a part of the second surface 30R of the deformed outer edge part 30P.
C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
C22C 30/06 - Alliages contenant moins de 50% en poids de chaque constituant contenant du zinc
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/16 - 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
12.
NON ORIENTED ELECTRICAL STEEL SHEET, IRON CORE, MANUFACTURING METHOD OF IRON CORE, MOTOR, AND MANUFACTURING METHOD OF MOTOR
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 X1 value defined by X1=(2×B50L+B50C)/(3×IS) is less than 0.845, an E1 value defined by E1=EL/EC is 0.930 or more, and an iron loss W10/1k is 80 W/kg or less.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
13.
HEAT TREATMENT METHOD FOR WELDED JOINT PART OF FLASH-BUTT-WELDED RAIL AND PRODUCTION METHOD FOR FLASH-BUTT-WELDED RAIL
In a heat treatment method for a welded joint part of a flash-butt-welded rail, first accelerated cooling is started when temperatures of a head top corner-side outer surface and a web outer surface are in a range of 700° C. or higher, in the first accelerated cooling, an average cooling rate in a temperature range of 750° C. to 600° C. of the head top corner-side outer surface is set to 1.0 to 3.5° C./sec, an average cooling rate in a temperature range of 750° C. to 600° C. of the web outer surface is set to 1.0 to 4.0° C./sec, the first accelerated cooling is stopped when the temperature of the head top corner-side outer surface and the temperature of the web outer surface are in a range of 500° C. to 600° C., and heating is started within 300 seconds after the stop of the first accelerated cooling.
B23K 31/02 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux relatifs au brasage ou au soudage
The Zn—Al—Mg-based hot-dip plated steel member includes: a steel member; and a hot-dip plating layer arranged on a surface of the steel member, wherein the hot-dip plating layer includes, as an average composition, in terms of mass %, 4 to 22% of Al, 1.0 to 10.0% of Mg, 0.0001 to 2% of Fe, and a balance including Zn and impurities; in binarized image data of image data obtained by imaging a surface of the hot-dip plating layer, the total area ratio of white pixels is 30% or more and 70% or less; and the binarized image data is obtained by binarizing the image data by Otsu's method.
Provided is a non-oriented electrical steel sheet having a base metal chemical composition containing, in mass %, C: 0.0040% or less, Si: more than 3.50% and 4.50% or less, Mn: less than 0.60%, Al: 0.30-0.90%, P: 0.030% or less, S: 0.0018% or less, N: 0.0040% or less, Ti: less than 0.0040%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.200%, Ni: less than 0.500%, and a total of one or both of Sn and Sb: 0.005-0.060%, with a balance being Fe and impurities; and satisfying [4.2≤Si+Al+0.5×Mn≤4.9], wherein the average crystal grain size of the base metal is more than 40 μm and 140 μm or less; the integration degree in the {111}orientation is 4.0 or less; and the sheet thickness of the base metal is 0.10 to 0.30 mm.
The present invention provides a molded body in which fracturing occurs less readily at a burring structure part, said fracturing starting from surface damage of a root part of the burring structure part. A molded body (1) according to the present invention is a steel molded body having a burring structure part (2) and a plate-like part (3) extending around the burring structure part (2), characterized in that the burring structure part (2) has a hole part (21) and a wall part (22) provided around the hole part (21) and having a leading edge part (22a) and a root part (22b), the root part (22b) has a plurality of band-like Mn segregation parts arranged at intervals in the thickness direction of the root part (22b) and extending in the surface direction of the root part (22b), the average spacing, in the thickness direction, of the band-like Mn segregation parts at a 1t/4 position of the thickness t of the root part (22b) is between 4.0 μm and 20.0 μm, inclusive, and the Mn segregation strength of the band-like Mn segregation parts is between 2.00% and 3.50% by mass, inclusive.
B21D 19/08 - Mise en forme ou autres traitements des bords, p. ex. des bords des tubes par l'action unique ou successive d'outils presseurs, p. ex. de mors d'étaux
B21D 53/88 - Fabrication d'autres objets particuliers d'autres parties de véhicules, p. ex. capots, garde-boue
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 38/60 - 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
17.
NON-ORIENTED ELECTRICAL STEEL SHEET, ROTOR CORE, MOTOR, AND METHOD FOR PRODUCING NON-ORIENTED ELECTRICAL STEEL SHEET
A non-oriented electrical steel sheet of this embodiment contains, in mass %, Si: 3.1 to 4.5%, and in addition, Ti, Si, Al, Zr, Nb, V, Mo, Cr, C, La, Ce, and N satisfy Formula (1) and Formula (2), a tensile strength TS is higher than 570 MPa, a work hardening amount WH defined by Formula (3) is less than 15 MPa, an average grain size D (m) satisfies Formula (4), and a yield elongation is 0.5% or more.
A non-oriented electrical steel sheet of this embodiment contains, in mass %, Si: 3.1 to 4.5%, and in addition, Ti, Si, Al, Zr, Nb, V, Mo, Cr, C, La, Ce, and N satisfy Formula (1) and Formula (2), a tensile strength TS is higher than 570 MPa, a work hardening amount WH defined by Formula (3) is less than 15 MPa, an average grain size D (m) satisfies Formula (4), and a yield elongation is 0.5% or more.
Si
/
28
+
Ti
/
48
+
Nb
/
93
+
V
/
51
+
Zr
/
91
+
Mo
/
96
+
Cr
/
52
>
C
/
12
×
750
(
1
)
Si
/
28
+
Al
/
27
+
Ti
/
48
+
Zr
/
91
+
La
/
139
+
Ce
/
140
>
N
/
14
×
1000
(
2
)
WH
=
Y
2.
-
YS
(
3
)
D
<
80
-
Si
×
10
(
4
)
The inhibition method of spontaneous heat generation in solid carbon resources includes adding a petroleum-based additive to solid carbon resources as a spontaneous heat generation inhibitor.
The present invention provides a processing method with which it is possible to improve a tool life. The processing method includes a step (# 5) for preparing a workpiece, a step (# 10) for preparing a processing liquid, and a processing step (# 15). In the processing step, removal processing or cold plastic processing is performed while supplying the processing liquid to a processing point that is a contact point between the workpiece and the tool. The processing liquid contains: water which serves as a solvent; a solute which is composed of at least one selected from among amines, alcohols, and esters; and fine bubbles. With respect to the solute, the respective contents of the amines, alcohols, and esters are 0.10 vol% or more. In the volume-based particle size distribution of aggregated particles that are formed of the solute in the processing liquid, the proportion of the aggregated particles having a particle size of 7.0 µm or more is 20% or more.
B23Q 11/10 - Dispositions pour le refroidissement ou la lubrification des outils ou des pièces travaillées
B01F 23/2375 - Mélange de gaz avec des liquides en introduisant des gaz dans des milieux liquides, p. ex. pour produire des liquides aérés caractérisé par les propriétés physiques ou chimiques des gaz ou des vapeurs introduits dans le milieu liquide pour obtenir des bulles fines, c.-à-d. des bulles d'une taille inférieure à 100 µm pour obtenir des bulles fines, c.-à-d. des bulles d'une taille inférieure à 1 µm
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 27/10 - Lubrification, refroidissement ou chauffage des cylindres extérieurement
B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
B21C 9/00 - Refroidissement, chauffage ou lubrification du matériau à étirer
B23B 47/00 - Caractéristiques de structure des éléments constitutifs spécialement conçus pour les machines à aléser ou à percerAccessoires de ces machines
B23G 1/44 - Équipement ou accessoires spécialement conçus pour les machines ou dispositifs à fileter
B24B 1/00 - Procédés de meulage ou de polissageUtilisation d'équipements auxiliaires en relation avec ces procédés
B24B 37/00 - Machines ou dispositifs de rodageAccessoires
C10M 129/06 - Composés hydroxylés comportant des groupes hydroxyle liés à des atomes de carbone acycliques ou cycloaliphatiques
Provided is a machining apparatus capable of improving the life of tools used for machining. A machining apparatus is provided with an emulsion diameter expansion device (3) and a supply device (4). The emulsion diameter expansion device (3) applies negative pressure, shear force, or collision force to a processing fluid (PF) containing emulsion particles to expand the diameter of the emulsion particles. The supply device (4) supplies the processing fluid (PF), in which the particle diameter of the emulsion particles has been expanded by the emulsion diameter expansion device (3), to a processing point (P0), which is a contact point between a workpiece (W) and a tool (1) during machining.
B23Q 11/10 - Dispositions pour le refroidissement ou la lubrification des outils ou des pièces travaillées
B21B 27/10 - Lubrification, refroidissement ou chauffage des cylindres extérieurement
B21B 45/02 - Dispositifs pour le traitement de surface des pièces spécialement combinés aux laminoirs, disposés dans les laminoirs, ou adaptés pour être utilisés avec les laminoirs pour lubrifier, refroidir ou nettoyer
C10M 173/00 - Compositions lubrifiantes contenant plus de 10% d'eau
C10N 30/00 - Propriétés physiques ou chimiques particulières améliorées par l'additif caractérisant la composition lubrifiante, p. ex. additifs multifonctionnels
C10N 40/24 - Travail des métaux sans enlèvement substantiel de matièreDécoupage du métal à l'emporte-pièce
21.
NON-ORIENTED ELECTRICAL STEEL SHEET, CORE, AND ROTARY ELECTRIC MACHINE
The non-oriented electrical steel sheet includes, as a chemical composition, in terms of mass %, 0.0100% or less of C, 1.50 to 4.00% of Si, 0.0001 to 1.00% of sol.Al, 0.0100% or less of S, 0.0100% or less of N, and 2.50 to 5.00% in total of one or more selected from the group consisting of Mn, Ni, and Cu, wherein, in terms of mass %, when [Mn] is defined as the Mn content, [Ni] is defined as the Ni content, [Cu] is defined as the Cu content, [Si] is defined as the Si content, [sol.Al] is defined as the sol.Al content, and [P] is defined as the P content, (2×[Mn]+2.5×[Ni]+[Cu])−([Si]+2×[sol.Al]+4×[P])≥1.50% is satisfied; has A411-011 of 15.0% or more; has a B50D of 1.70 T or more; and has a W10D/400D of 10.4 W/kg or less.
Provided is a duplex stainless steel material having excellent general corrosion resistance and pitting corrosion resistance even in a supercritical corrosive environment. The duplex stainless steel material according to the present disclosure has a chemical composition described in the description, results in Fn1 satisfying at least 40.0 as defined by formula (1), and has a microstructure including ferrite and austenite. In the duplex stainless steel material according to the present disclosure, the total number density of coarse Mn sulfides having an equivalent circle diameter of at least 1.0 µm and coarse Ca sulfides having an equivalent circle diameter of at least 2.0 µm is at most 0.50 pieces/mm2, and the total number density NDA pieces/mm2of coarse Mn sulfides and coarse Ca sulfides in ferrite and the total number density NDG pieces/mm2 of coarse Mn sulfides and coarse Ca sulfides in austenite satisfy formula (2). (1): Fn1=Cr+3.3(Mo+0.5W)+16N+2Ni+Cu+2Co+10Sn (2): NDA/NDG<0.50
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM (Japon)
Inventeur(s)
Nakano Kaoru
Nakagawa Tsuguhiko
Sakai Hiroshi
Abrégé
Provided is a method for operating a steelworks, characterized by circulating, within the steelworks, external ethylene introduced from outside the steelworks, self-generated ethylene generated inside the steelworks, by-product gas generated in the steelworks, and electric power generated by using the by-product gas in the steelworks, and supplying the steelworks with electric power generated by renewable energy or a nuclear power plant.
A battery case according to one aspect of the present disclosure comprises a body in which a through-hole is provided, and a lid part which seals the through-hole. At least a portion of the body is configured from a surface treatment plate having a base plate and a surface treatment layer that covers the surface of the base plate. The through-hole is provided in the surface treatment plate. The surface treatment plate has a bent part that is provided along the edge of the through-hole and that protrudes outward from the battery case. The end surface of the tip of the bent part is excluded from the inner surface of the battery case.
Provided is a battery case (1) including a lid body (11) and body (12), the battery case (1) being characterized in that: the lid body (11) and the body (12) are joined by seaming; the lid body (11) contains any of a stainless steel material, a plated steel material, a coated steel material, or an aluminum material; the body (12) includes a Ni-plated steel material having a base steel material and a Ni-based plating layer; the body (12) includes at least one weld metal (30) extending in a direction intersecting the lid body (11); and when the average Cr amount of the weld metal (30) is defined as [Cr] and the average Ni amount of the weld metal (30) is defined as [Ni], [Cr] + 4 × [Ni] ≥ 5.00 is satisfied.
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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
H01M 50/103 - Boîtiers primairesFourreaux ou enveloppes caractérisés par leur forme ou leur structure physique prismatique ou rectangulaire
H01M 50/124 - Boîtiers primairesFourreaux ou enveloppes caractérisés par le matériau ayant une structure en couches
H01M 50/128 - Boîtiers primairesFourreaux ou enveloppes caractérisés par le matériau ayant une structure en couches comprenant au moins trois couches dont au moins deux couches de matériaux inorganiques uniquement
H01M 50/145 - Boîtiers primairesFourreaux ou enveloppes pour protéger contre les dommages causés par des facteurs externes pour protéger contre la corrosion
H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
A side member outer (12) of a ladder frame (100) is provided with a top plate (121), ridge line portions (122a, 122b), and vertical walls (123a, 123b). A plurality of beads (124) are formed in the top plate (121). Each bead (124) has a shape that is recessed toward the inside of the side member outer (12) and extends in the longitudinal direction of the side member outer (12). The side member outer (12) satisfies the following (1) or (2). (1) The sum of the depths (d1) of the plurality of beads (124) is at least 14.0 times the plate thickness (t) of the top plate (121). (2) The sum of the depths (d1) of the plurality of beads (124) is less than 14.0 times the plate thickness (t) of the top plate (121), and 0.085×L0≤L1≤0.500×L0.
B62D 21/02 - Châssis, c.-à-d. armature sur laquelle une carrosserie peut être montée comprenant des éléments d'armature disposés longitudinalement ou transversalement
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
27.
ANOMALY DETECTION DEVICE, PLANT SYSTEM, FEATURE INFORMATION GENERATION DEVICE, ANOMALY DETECTION METHOD, FEATURE INFORMATION GENERATION METHOD AND PROGRAM
An anomaly detection device includes: a process data obtaining unit that obtains process data of a process having a plurality of process characteristics; and an anomaly detection unit that detects an anomalous state of the process based on a degree of anomaly that indicates a difference between the obtained process data and a normal state of the process represented by feature information that represents a feature of normal process data for each of the process characteristics. The feature information that represents the normal state of the process is optimum feature information for each of the process characteristics found by evaluating a candidate of feature information based on an error between the normal process data and estimated process data calculated using the candidate of feature information, the candidate of feature information being generated for each of the process characteristics from a plurality of items of normal process data obtained when the process is in the normal state.
A production apparatus includes a punch, a blanking die, a first holding part, a second holding part, and a heating part A plurality of core sheets is cut out from a steel strip by the punch and the blanking die, an outer peripheral portion of a plurality of core sheets, which has been cut out, is pressurized laterally by the first holding part and the plurality of core sheets is pressurized downward by the punch, and the plurality of core sheets pressurized downward by the punch is heated by the heating part while held in the second holding part. The first holding part holds the plurality of core sheets at a temperature lower than the softening temperature of the adhesive layer, and the heating part heats the plurality of core sheets held in the second holding part to a temperature higher than or equal to the softening temperature.
A production apparatus includes a punch, a blanking die arranged below the punch, a first holding part arranged below the blanking die, a second holding part arranged below the first holding part and formed of a separate member from the first holding part, and a heating part arranged around the second holding part below the first holding part. A plurality of core sheets is cut out from a steel strip by the punch and the blanking die, an outer peripheral portion of a plurality of core sheets, which has been cut out, is pressurized laterally by the first holding part and the plurality of core sheets is pressurized downward by the punch, and the plurality of core sheets pressurized downward by the punch is heated by the heating part while being held in the second holding part.
Employed is a plated steel material including a plated layer arranged on a surface of a base steel material, wherein the plated layer includes, in terms of mass %, 5.0 to 40.0% of Al, 0.5 to 15.0% of Mg, and 5.0 to 40.0% of Fe, and further includes a balance including Zn and impurities, in a cross section perpendicular to a surface of the plated steel material, when observing an observation region which is a cross section of the plated steel material having a predetermined length in a direction parallel to the surface of the plated steel material, a length L of a boundary line between the plated layer and the base steel material satisfies a following formula (1), 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 the first region includes an Al-containing phase at an area fraction of 5% or more;
Employed is a plated steel material including a plated layer arranged on a surface of a base steel material, wherein the plated layer includes, in terms of mass %, 5.0 to 40.0% of Al, 0.5 to 15.0% of Mg, and 5.0 to 40.0% of Fe, and further includes a balance including Zn and impurities, in a cross section perpendicular to a surface of the plated steel material, when observing an observation region which is a cross section of the plated steel material having a predetermined length in a direction parallel to the surface of the plated steel material, a length L of a boundary line between the plated layer and the base steel material satisfies a following formula (1), 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 the first region includes an Al-containing phase at an area fraction of 5% or more;
(
L
-
L
0
)
/
L
0
×
100
≥
2.
(
%
)
,
(
1
)
L0 is a linear distance between one end and another end of the boundary line in the observation region, and L is a length of the boundary line between the one end and the other end.
A brazed lap joint according to an aspect of the present invention includes: a first steel sheet and a second steel sheet, the first steel sheet and the second steel sheet being stacked; a zinc-based-plated layer, the zinc-based-plated layer being an overlapping surface of the first steel sheet and the second steel sheet; and a brazed zone including a brazing metal joining an end surface of the first steel sheet and a surface of the second steel sheet, and a heat-affected zone around the brazing metal, in which a concentration of B atoms at a prior austenite grain boundary of the second steel sheet excluding the brazed zone is 2.0 atm % or more, an average effective grain size of the second steel sheet excluding the brazed zone is 7.0 μm or less, an average effective grain size of the second steel sheet in a root portion, a toe portion, and a middle portion between the root portion and the toe portion is 15.0 μm or less, a Vickers hardness of the brazing metal is 250 or less, and a leg length of the brazed lap joint on the second steel sheet side is 2.0 mm or more.
Provided is a non-oriented electrical steel sheet having a base metal chemical composition containing, in mass %, C: 0.0040% or less, Si: more than 3.50% and 4.50% or less, Mn: less than 0.60%, Al: 0.30-0.90%, P: 0.030% or less, S: 0.0018% or less, N: 0.0040% or less, Ti: less than 0.0040%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.200%, Ni: less than 0.500%, and a total of one or both of Sn and Sb: 0.005-0.060%, with a balance being Fe and impurities; and satisfying [4.2≤Si+Al+0.5×Mn≤4.9], wherein the average crystal grain size of the base metal is 10 to 40 μm, the integration degree of the {111} <112> orientation is 8.0 or less, and the sheet thickness of the base metal is 0.10 to 0.30 mm.
In a non-oriented electrical steel sheet according to the present disclosure, TS is higher than 580 MPa, and when P120/Fe700 that is a ratio of a peak-to-peak value P120 of P around an electron energy of 120 eV to a peak-to-peak value Fe700 of Fe around an electron energy of 700 eV in Auger differential spectra obtained in a grain boundary region of a fracture surface is defined as [P]GB, and P120/Fe700 that is a ratio of a P120 to Fe700 in Auger differential spectra obtained in an intragranular region of a fracture surface is defined as [P]IG, the [P]GB and the [P]IG satisfy Formula (1). A difference ΔS between TS and YP is 110 MPa or less, and an average grain size D (μm) satisfies Formula (2).
In a non-oriented electrical steel sheet according to the present disclosure, TS is higher than 580 MPa, and when P120/Fe700 that is a ratio of a peak-to-peak value P120 of P around an electron energy of 120 eV to a peak-to-peak value Fe700 of Fe around an electron energy of 700 eV in Auger differential spectra obtained in a grain boundary region of a fracture surface is defined as [P]GB, and P120/Fe700 that is a ratio of a P120 to Fe700 in Auger differential spectra obtained in an intragranular region of a fracture surface is defined as [P]IG, the [P]GB and the [P]IG satisfy Formula (1). A difference ΔS between TS and YP is 110 MPa or less, and an average grain size D (μm) satisfies Formula (2).
[
P
]
G
B
/
[
P
]
IG
>
2.
(
1
)
D
≤
100
-
15
×
[
P
]
G
B
/
[
P
]
I
G
+
1
500
/
TS
(
2
)
Provided is a stainless steel material having excellent general corrosion resistance and pitting corrosion resistance even in a supercritical corrosive environment. A stainless steel material according to the present disclosure has a chemical composition described in the description, results in Fn1 being at least 32.0 as defined by formula (1), and has a microstructure including, in volume fraction, 35-70% of ferrite and 0-15% of residual austenite, the balance being tempered martensite. In the stainless steel material, the total number density of coarse Mn sulfides having an equivalent circle diameter of at least 1.0 µm and coarse Ca sulfides having an equivalent circle diameter of at least 2.0 µm is 0.60 particles/mm2or less. The total number density NDF particles/mm2of coarse Mn sulfides and coarse Ca sulfides in ferrite and the total number density NDO particles/mm2 of coarse Mn sulfides and coarse Ca sulfides in phases other than ferrite satisfy formula (2). (1): Fn1=Cr+3.3(Mo+0.5W)+16N+2Ni+Cu+2Co+10Sn (2): NDO/NDF<0.60
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
C21D 8/10 - 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
35.
JOINT STRUCTURE, PRESS-FORMED PRODUCT, AND ALUMINUM-BASED PLATED STEEL SHEET
A joint structure according to one embodiment of the present disclosure comprises a first press-formed member and a second press-formed member that are made of steel, a welding bead that joins the first press-formed member and the second press-formed member, and a heat affected zone that is present around the welding bead, wherein one or both of the first press-formed member and the second press-formed member have an aluminum-based plating layer on at least one surface thereof, and the average aluminum concentration of the welding bead is 1.0 mass% or less. Preferably, the joint structure has a plating removed portion that extends along the welding bead, between the welding bead and the aluminum-based plating layer.
The purpose of the present invention is to provide a vehicle side frame component (for example, a door ring for an automobile) that is further improved by addressing production of the vehicle side frame component not only from the viewpoint of production technology but also from the viewpoints of safety and weight reduction. The present invention is a vehicle side frame component configured from a plurality of steel plates, wherein a side frame component includes a side sill and pillars connected to the side sill, at least one of the pillars has a joint section in which a blank corresponding to the pillar and a blank corresponding to the side sill are joined at an overlapping section where the blanks overlap, the overlapping section is disposed in the pillar and is located outside a lower connection section which is a part where the side sill and the pillar are connected in a region surrounded by virtual lines indicating the width of the side sill and the width of the pillar, and the overlapping section is formed integrally by cold-pressing the integrated blanks, which are configured so as to be separated from the lower connection section by 50-250 mm.
An objective of the present invention is to provide a vehicle side frame component (for example, an automobile door ring) that is further improved by taking into account not only aspects relating to production technology but also aspects relating to safety and weight reduction when manufacturing the vehicle side frame component. The vehicle side frame component comprises a plurality of steel plates, and includes a side sill and pillars connected to the side sill, wherein: in at least one of the pillars, a blank corresponding to the pillar and a blank corresponding to the side sill have a joint portion that is joined at an overlapping portion where the blanks overlap each other; the overlapping portion is located outside a lower connecting portion, which is a part where the side sill and the pillar are connected and which is a region surrounded by an imaginary line indicating the width of the side sill and an imaginary line indicating the width of the pillar, and the overlapping portion is disposed within the pillar; the overlapping portion is spaced apart from the lower connecting portion by 10 mm to 200 mm; and an integrated blank formed by joining parts of the overlapping portion that do not hinder material flow due to press forming (parts with little material flow) is formed integrally by hot stamping.
The purpose of the present invention is to provide a vehicular side frame component (for example, an automobile door ring) upon which further improvements have been made not only with respect to production in accordance with the trend toward EV production but also with respect to safety, lightweightedness, and the protection of a battery that is to be installed at a lower part of a vehicle. According to the present invention, a vehicular side frame component that is formed from a plurality of steel sheets has a side sill and pillars that are connected to the side sill. At at least one of the pillars, a blank that corresponds to the pillar and a blank that corresponds to the side sill overlap and are joined at an overlap part that is an integrally cold-press-molded integrated blank that is formed within the side sill at the outside of a lower connection part that is the portion where the side sill and the pillar connect and is a region that is enclosed by an imaginary line that indicates the width of the side sill and an imaginary line that indicates the width of the pillar.
The purpose of the present invention is to provide a further improved vehicle side frame component (for example, an automobile door ring), addressing the problem of adding not only an aspect of a production technology but also an aspect of safety, weight reduction, and battery protection for a battery mounted under the vehicle, in response to the trend towards EVs when manufacturing the vehicle side frame component. The vehicle side frame component is composed of a plurality of steel plates. The side frame component has side sills and pillars connected to the side sills. In at least one of the pillars, a blank corresponding to the pillar and a blank corresponding to the side sill are joined together at an overlapping portion in which the blanks are overlapped with each other. The overlapping portion is located within the side sill and outside a lower connection portion in which the side sill and the pillar are connected to each other, and which is a region surrounded by an imaginary line indicating the width of the side sill and an imaginary line indicating the width of the pillar. An integrated blank configured by joining portions (portions with less material flow) of the overlapping portion, which do not impede material flow during press forming, is integrally formed by hot stamping. The integrated blank thus constructed is integrally formed by hot stamping.
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 X1 value defined by X=(2×B50L+B50C)/(3×IS) is less than 0.845, an X2 value defined by X2=(B50L+2×B50D+B50C)/(4×IS) is 0.800 or more, and an iron loss W10/1k is 80 W/kg or less.
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
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
H01F 1/147 - Alliages caractérisés par leur composition
H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
A cut-and-processed product of a Zn—Al—Mg-based plated steel material including a base steel material and a Zn—Al—Mg-based plating layer covering a surface of the base steel material, in which a cut end surface of the cut-and-processed product is covered with a linear film in which a component of the Zn—Al—Mg-based plating layer linearly flows, and a coverage of the cut end surface with the linear film is from 60 to 90%, a non-plated surface of the base steel material and the linear film around the non-plated surface, in the cut end surface of the cut-and-processed product, are covered with a repair coat, an initial coat resistivity is from 10 to 1000 Ω/cm2 and a coat resistivity after immersion of the cut-and-processed product in 5% by mass salt water for 3 hours is from 5 to 50 Ω/cm2, in the repair coat, and a thickness of the repair coat is from 10 to 100 μm, as well as a guardrail utilizing the cut-and-processed product.
E01F 15/04 - Barrières continues s'étendant le long des routes ou entre les voies de circulation constituées essentiellement de poutres longitudinales ou de bandes rigides
C09D 5/10 - Peintures anti-corrosion contenant une poudre métallique
C23C 2/02 - Pré-traitement du matériau à revêtir, p. ex. pour le revêtement de parties déterminées de la surface
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
C23F 11/18 - Inhibition de la corrosion de matériaux métalliques par application d'inhibiteurs sur la surface menacée par la corrosion ou par addition d'inhibiteurs à l'agent corrosif dans d'autres liquides au moyen d'inhibiteurs inorganiques
42.
JOINED STRUCTURE AND METHOD FOR MANUFACTURING JOINED STRUCTURE
A joined structure according to one embodiment of the present disclosure comprises an aluminum member, one or more metal members, and an adhesive that joins the aluminum member and the metal members, wherein the aluminum member has one or more protrusions, the metal members have one or more through-holes, and the protrusions are inserted into and crimped around the through-holes. A method for manufacturing a joined structure according to another embodiment of the present disclosure comprises: a step for applying an adhesive to one or both of an aluminum member having one or more protrusions and a metal member having one or more through-holes; a step for bonding the aluminum member and the metal member using the adhesive while inserting the protrusions into the through-holes; a step for deforming the tips of the protrusions to crimp the protrusions around the through-holes; and a step for curing the adhesive.
F16B 5/04 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par rivetage
B21D 39/00 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes
B21D 39/03 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes des tôles autrement que par pliage
F16B 5/08 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par soudage ou procédés similaires
43.
JOINED STRUCTURE AND METHOD FOR MANUFACTURING JOINED STRUCTURE
A joined structure (1) according to one embodiment of the present disclosure comprises: an aluminum member (11); and one or more plated steel members (12) each having a base steel member (122) and a surface plating layer (123) provided on a surface of the base steel member (122). The aluminum member (11) has one or more protrusions (111), the plated steel member (12) has one or more through-holes (121), and the protrusions (111) are inserted into the through-holes (121) and caulked. At an inner surface of each through-hole (121), the base steel member (122) is exposed, a transition plating layer (124) having substantially the same component as the surface plating layer (123) is provided on a part of the inner surface of the through-hole (121), and the transition plating layer (124) extends from one surface of the plated steel member (12) toward the inside of the through-hole (121).
F16B 5/07 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par emboîtement des protubérances multiples portées par deux surfaces, p. ex. crochets, spirales
B21D 39/00 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes
B21D 39/03 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes des tôles autrement que par pliage
Provided is a steel material which has high strength and exhibits excellent low temperature toughness in an extremely cold environment of -70°C or lower. This steel material according to the present disclosure contains more than 0.09% to 0.20% of C, 0.60% or less of Si, 0.5-2.5% of Mn, 0.05% or less of P, 0.005% or less of S, 0.005-0.050% of Ti, 0.005-0.100% of Al, 0.0050-0.0150% of N, and 0.0050% or less of O, with the remainder comprising Fe and impurities. The steel material has an Fn1 value, as defined by formula (1), of 5.0 or more, has an Fn2 value, as defined by formula (2), of 1.80 or less, and has a yield strength of 483 MPa or more. In the steel material, the number density of Ti-containing particles is 0.8×1018particles/mm3or more, and among Ti-containing particles, the ratio by number of Ti-containing particles having circle-equivalent diameters of 60 nm or less is 75% or more. Formula (1): Fn1=Ti×N×105. Formula (2): Fn2=Ti/N.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B21B 17/02 - Laminage des tubes par des cylindres dont les axes sont pratiquement perpendiculaires à l'axe des pièces travaillées, p. ex. laminage "axial" avec un mandrin
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 38/60 - 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
Provided is a steel sheet which has a composition containing, in terms of mass, 0.70-1.30% C, 0.01-0.50%, Si, 0.05-1.30% Mn, not more than 0.100% P, not more than 0.1000% S, not more than 0.100% Al, not more than 0.0150% N, 0-1.20% Cr, 0-2.800% Ni, 0-0.500% Mo, 0-0.500% V, 0-0.500% Nb, 0-0.150% Ti, and 0-0.0100% B, the remainder being Fe and impurities, and which has a metal structure containing ferrite that has an average crystal grain size of not less than 15.0 μm and cementite that has an average particle size of more than 0.40 μm but not more than 0.75 μm. In the cementite, the area ratio of spheroidized cementite that has an aspect ratio of not more than 3.0 with respect to the entirety of the cementite is not less than 85%.
A steel material according to the present disclosure has a chemical composition containing, in terms of mass%, 0.10-0.20% C, 0.01-0.50% Si, 1.00-1.85% Mn, 0.040% or less P, 0.040% or less S, 0.010-0.100% Al, 0.001-0.015% N, 0.010-0.100% Ti, 0.0001-0.0050% O, 0-0.50% Cu, 0-0.50% Ni, 0-0.50% Cr, 0-0.50% Mo, 0-0.30% V, 0-0.0040% B, 0-0.050% Nb, and 0-0.100% Sn, with the remainder consisting of Fe and impurities. When the total content of the chemical composition of the steel material is 100% in terms of mass%, the Ti content in a residue obtained by a residue extraction method is 0.004-0.080% in terms of mass%.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
47.
ROTATING ELECTRICAL MACHINE, STATOR CORE AND ROTOR CORE SET, METHOD FOR MANUFACTURING ROTATING ELECTRICAL MACHINE, METHOD FOR MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR MANUFACTURING ROTOR AND STATOR OF ROTATING ELECTRICAL MACHINE, AND NON-ORIENTED ELECTRICAL STEEL SHEET SET
A rotating electrical machine includes a stator, a rotor, and a casing that accommodates the stator and the rotor, in which a {111}<211> orientation intensity (A) of a core material of the stator is in a range of 2 to 30, a {111}<211> orientation intensity (B) of a core material of the rotor is in a range of 1 to 15, and both the orientation intensities satisfy a relationship of an expression (1) A>B.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
H02K 1/02 - Détails du circuit magnétique caractérisés par le matériau magnétique
A cut-and-processed product of a Zn—Al—Mg-based plated steel material including a base steel material and a Zn—Al—Mg-based plating layer covering a surface of the base steel material, in which a cut end surface of the cut-and-processed product is covered with the Zn—Al—Mg-based plating layer at a coverage of from 50 to 99% with respect to the cut end surface, a non-plated surface of the base steel material and the Zn—Al—Mg-based plating layer around the non-plated surface, in the cut end surface of the cut-and-processed product, are covered with a repair coat, an initial coat resistivity is from 10 to 1000 Ω/cm2 and a coat resistivity after immersion of the cut-and-processed product in 5% by mass salt water for 3 hours is from 5 to 50 Ω/cm2, in the repair coat, and a thickness of the repair coat is 10 μm or more, as well as a guardrail utilizing the cut-and-processed product.
This non-oriented electrical steel sheet includes a steel sheet, in which the steel sheet contains, as a chemical composition, in % by mass, C: 0.0030% or less, Si: 1.0 to 3.5%, Al: 0.10 to 2.00%, Mn: 0.1 to 2.0%, P: 0.20% or less, S: 0.0030% or less, N: 0.0030% or less, Ti: 0.0030% or less, B: 0.0020% or less, Sn: 0 to 0.200%, Sb: 0 to 0.1000%, and a remainder: Fe and impurities, when a Sn content is represented by [Sn] and an Sb content is represented by [Sb] in % by mass, [Sn]+2×[Sb]≤0.200 is satisfied, and when a sheet width of the steel sheet is represented by W, WH/WL, which is a ratio between a maximum value WH and a minimum value WL of iron loss W10/400 at a W/10 part which is a part at a W/10 position, a W/4 part which is a part at a W/4 position, and a W/2 part which is a part at a W/2 position of the sheet width from an end portion in a width direction, is 1.10 or less.
Provided is a hot rolled steel sheet having a predetermined chemical composition and a microstructure comprising, by area %, ferrite: 30 to 60%, bainite: 30 to 60%, and martensite: 5 to 20%, wherein TiC precipitates having a diameter of 2.0 to 8.0 nm are present in the ferrite in a number density of 1.0×1016/cm3 or more, and an average aspect ratio of prior austenite grains in a region including the bainite and martensite is 3.0 or more.
This Sn-Zn-based plated steel material comprises a steel material and an Sn-Zn-based plating layer positioned on a surface of the steel material. The Sn-Zn-based plating layer contains, by mass%, 3.0-12.0% Zn in terms of metallic Zn, with the remainder including Sn and impurities. The Sn-Zn-based plating layer includes Sn crystals and an Sn-Zn eutectic structure. In a 250 μm2 cross-section of the Sn–Zn-based plated layer taken in the thickness direction, the Sn crystals occupy an area fraction of at least 50%, and among the Zn crystals present in the Sn–Zn eutectic structure, the number of Zn crystals with a major axis of 1 μm or longer is 10 to 50.
Provided is a steel sheet having a composition which contains, in terms of mass, 0.70-1.30% C, 0.01-0.50% Si, 0.05-1.30% Mn, up to 0.100% P, up to 0.100% S, up to 0.100% Al, up to 0.0150% N, 0-1.20% Cr, 0-2.800% Ni, 0-0.500% Mo, 0-0.500% V, 0-0.500% Nb, 0-0.150% Ti, and 0-0.0100% B, the remainder comprising Fe and impurities, and having a metallographic structure which includes ferrite having an average crystal-grain diameter of 15.0 μm or larger and cementite having an average grain diameter of 0.70-1.20 μm. In the cementite, the areal proportion of spheroidized cementite having aspect ratios of 3.0 or less is 85% or higher with respect to the whole cementite and the ratio of the number of intragranular cementite grains to the total number of cementite grains is 0.70 or higher.
This Ni steel has a chemical composition comprising, by mass%, C: 0.030 to 0.070%; Si: 0.30% or less; Mn: 0.10 to 0.80%; Ni: 5.5% or greater but less than 10.5% of Ni; Al: 0.060% or less; N: 0.0060% or less; O: 0.0030% or less; P: 0.0080% or less; S: 0.0040% or less; Cu: 0 to 1.00%; Cr: 0 to 1.00%; Mo: 0 to 0.60%; Nb: 0 to 0.020%; V: 0 to 0.080%; Ti: 0 to 0.020%; B: 0 to 0.0020%; Ca: 0 to 0.0040%; and REM: 0 to 0.0050%, with the balance being Fe and impurities. The Ni steel has a yield stress of 460 mPa or greater and a critical CTOD value of 0.10 mm or greater as determined at a test temperature of -253֯C.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
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 steel material according to the present disclosure has a chemical composition containing, in mass%, 0.10-0.30% of C, 0.05-1.50% of Si, 0.40-2.00% of Mn, 0.025% or less of P, 0.001-0.050% of S, 0.05-2.30% of Cr, 0.100% or less of Al, 0.030% or less of N, 0.0003-0.0050% of O, and 0.020-0.080% of Nb, with the remainder comprising Fe and impurities. In a cross section parallel to a rolling direction, the number density of specific composite precipitates is 0.010-1.000/mm2, and the specific composite precipitates include Nb precipitates having an area of 10-50 μm2and Mn sulfides arranged at positions within the maximum length Lmax of the Nb precipitates from the Nb precipitates and having an area of 1-80 μm2.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B21B 1/02 - 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 de grosses pièces, p. ex. des lingots, brames, billettes dont la section droite est sans importance
B22D 11/124 - Accessoires pour le traitement ultérieur ou le travail sur place des barres coulées pour le refroidissement
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
B24C 1/10 - Méthodes d'utilisation de jet abrasif en vue d'effectuer un travail déterminéUtilisation d'équipements auxiliaires liés à ces méthodes pour augmenter la compacité des surfaces, p. ex. par grenaillage
B24C 11/00 - Emploi de matériaux abrasifs spécifiés pour les jets abrasifs
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
C21D 7/06 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid de la surface par grenaillage ou similaire
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
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 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
56.
MAGNETIC POWDER FLAW DETECTION DEVICE AND MAGNETIC POWDER FLAW DETECTION METHOD
This magnetic powder flaw detection device uses a magnetic powder to detect a flaw on the surface of a flaw detection target material, said device including: a magnetization unit for magnetizing the flaw detection target material; a magnetic powder adhesion unit for adhering the magnetic powder to the surface of the flaw detection target material which has been magnetized by the magnetization unit; an ultraviolet ray radiation unit for radiating ultraviolet rays onto the surface of the flaw detection target material to which the magnetic powder has been adhered by the magnetic powder adhesion unit; an image-capturing unit for generating a plurality of captured images by, at a plurality of different exposure periods or at a plurality of different ultraviolet ray outputs, capturing images of a region considered to be the same as the position, on the surface of the flaw detection target material, that is radiated with ultraviolet rays by the ultraviolet ray radiation unit; a selection unit for selecting a captured image from among the plurality of captured images on the basis of a preset condition; and an inspection unit for inspecting the surface of the flaw detection target material on the basis of the captured image selected by the selection unit.
G01N 21/91 - Recherche de la présence de criques, de défauts ou de souillures en utilisant la pénétration de colorants, p. ex. de l'encre fluorescente
G01N 27/84 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant des variables magnétiques pour rechercher la présence des criques en étudiant des champs magnétiques de dispersion en appliquant une poudre magnétique ou une encre magnétique
Provided is semi-reduced HBI for which semi-reduced iron produced from low-grade iron ore or iron ore pellets can be used as a raw material and which has excellent meltability and has an apparent density that makes marine transportation possible. The semi-reduced HBI is obtained by hot forming semi-reduced iron. The semi-reduced HBI has a total iron content of 80-90 mass%, a metallization rate of 70-90%, an apparent density of 5.0-5.5 g/cm3222) of 0.10-0.70.
This automobile frame member is a hat-shaped member including a top plate part, a vertical wall part and a flange part. An average value of Vickers hardness of the member is 300-800 Hv. The vertical wall part has at least one bead extending from the flange part side to the top plate part side. A part of a connection part between the vertical wall part and the top plate part is a thickened part thicker than the vertical wall part and the top plate part.
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
Provided is an alloy material that has excellent weld high-temperature cracking resistance and excellent high-temperature corrosion resistance. This alloy material has a chemical composition including, by mass %, C: 0.050-0.100%, Si: 1.00% or less, Mn: 1.50% or less, P: 0.035% or less, S: 0.0015% or less, Cr: 19.00-23.00%, Ni: 30.00-35.00%, N: 0.010% or less, Al: 0.30-0.70%, Ti: 0.30-0.70%, Cu: 0.20-1.00%, Nb: 0.001-0.100%, and B: 0.0005-0.0050%, the remainder consisting of Fe and impurities, and satisfies expression (1), expression (2), and expression (3). (1): 2Al+Si≥0.75 (2): 26.716–2.99Si–0.174Mn–0.757Cr–0.27Ni–0.38Cu+5.45Nb–586B≤2.00 (3): 56.3–3.5Cu+666B≤56.80
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
B23K 9/23 - Soudage ou découpage à l'arc tenant compte des propriétés des matériaux à souder
C21D 8/00 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/16 - 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
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
Produits et services
Microbubble generators for use in metalworking machines and tools; Ultrasonic cleaning apparatus for cleaning metal surfaces; Metal surface pickling apparatus; Metalworking machines and tools for metal surface treatment; Metalworking machines; Metalworking machine tools Cleaning treatment of metal surfaces; Processing treatment of metal surfaces; Metal surface treatments; Degreasing treatment of metals; Pickling treatment of metals; Metal treating; Recycling of waste and trash
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.
22 is 0.1-10.0%. The ratio of the total amount X of Mn oxides to the total amount of the total amount X of Mn oxides and the total amount Y of Ti oxides (X/(X+Y)) is 0.65-1.00. The total content of Mn excluding Mn contained as an oxide is 3.0-30.0%.
B23K 35/368 - Emploi de compositions non métalliques spécifiées pour fil fourré, soit seules, soit liées à l'emploi de matériaux spécifiés pour le brasage ou le soudage
B23K 35/30 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 1550 C
22223222] +5 ([C] + [Mg] + [Fe]) is 2.0-60.0; and the particle size distributions are such that more than 2.00 mm: 40% or less, more than 1.00 mm and 2.00 mm or less: 5-50%, more than 0.50 mm and 1.00 mm or less: 5-75%, more than 0.25 mm and 0.50 mm or less: 5-50%, and 0.25 mm or less: 40% or less.
The present invention provides a spot-welded joint in which, due to a novel configuration, hydrogen embrittlement cracking is unlikely to occur. This spot-welded joint (1) comprises two or more superposed steel sheets (2, 3), a nugget (N) that joins the steel sheets, and a HAZ-hardened portion that is formed around the nugget (N), the spot-welded joint being characterized in that at least one steel sheet (2) among two of the steel sheets that were in contact with an electrode during spot welding satisfies the relationship in formula (1) where, in a cross section along the thickness direction passing through the center of the nugget (N), the width of the HAZ-hardened portion sd measured at each of the following positions are defined as D1, D2, and Dc respectively: a position at a depth of one-quarter of the sheet thickness t from an electrode contact surface (S1); a position at a depth of one-quarter of the sheet thickness t from a superposed surface (S2); and a sheet thickness center position. Formula (1):|D1-D2|/Dc≦0.14
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.
This double pipe comprises: an inner pipe having ribs and formed from ferrite steel; and an outer pipe formed from austenitic steel. The inner pipe and the outer pipe have prescribed chemical compositions. When the hardness is measured at intervals of 40 μm in an area extending from the interface between the inner pipe and the outer pipe toward the outer side of the double pipe in a radial direction, the distance is 200 μm or less from the interface to an outermost measurement point at which the hardness is 1.1 times or greater than the hardness of the thick central portion of the outer pipe. The ferrite rate of the inner pipe is 30% or higher in terms of area ratio.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
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
77.
FERRITIC-AUSTENITIC DUPLEX STAINLESS STEEL MATERIAL
Disclosed is a ferritic-austenitic duplex stainless steel material which has a composition that contains, on a mass basis, 0.100% or less of C, 1.00% or less of Si, 6.00% or less of Mn, 9.00% or less of Ni, 0.050% or less of P, 0.0300% or less of S, 18.00-32.00% of Cr, 5.00% or less of Mo, 3.00% or less of Cu, 0.050-0.300% of N, 0.005-0.100% of Al, 0.1000% or less of Ca, and 0.1000% or less of Mg, with the balance being made up of Fe and impurities. In the ferritic-austenitic duplex stainless steel material, the number density of soluble inclusions in each of which the length is 1 µm or more and the proportion of the Al concentration to the total concentration of Al, Mg, Ca, and Mn is 0.2 or less is 10.0 per mm2 or less.
This ferrite/austenite duplex stainless-steel material has a composition containing, in terms of mass, up to 0.100% C, up to 1.00% Si, up to 6.00% Mn, up to 9.00% Ni, up to 0.050% P, up to 0.0300% S, 18.00-32.00% Cr, up to 5.00% Mo, up to 3.00% Cu, 0.050-0.300% N, 0.005-0.050% Al, up to 0.1000% Ca, and up to 0.1000% Mg, the remainder comprising Fe and impurities. The ferrite/austenite duplex stainless-steel material has a number density of soluble inclusions of 3.0 grains/mm2 or less, the soluble inclusions having a major-axis length of 5 μm or greater and the proportion of Al concentration to the total concentration of Al, Mg, Ca, and Mn of 0.2 or less.
This method for manufacturing a press-molded article (10) comprises a preparation step and a molding step. In the preparation step, a blank (20) is prepared. In the molding step, the blank (20) is pressed using a die (30, 30A) to obtain a press-molded article (10). In the molding step, molding of a top plate (11) and first ridge line parts (14a, 14b) is started by an upper mold (50, 50A) and a first lower mold (41) in a state in which second lower molds (42a, 42b) are disposed on the inner side in a width direction (D2) of the die (30, 30A) with respect to portions of the upper mold (50, 50A) corresponding to flanges (13a, 13b), and then the second lower molds (42a, 42b) are moved outward in the width direction (D2) with respect to the first lower mold (41), thereby molding second ridge line parts (15a, 15b) and the flanges (13a, 13b) by means of the upper mold (50, 50A) and the second lower molds (42a, 42b).
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 present invention provides: a steel sheet which is excellent in ultimate deformability isotropy and has high elongation and ultimate deformability in spite of having high strength; and a component including the steel sheet. Provided is a steel sheet having a predetermined chemical composition, the steel sheet being characterized in that the metal structure at a 1/4 thickness position from a surface contains, in terms of area%, 70%-95% of bainite and 5%-30% of martensite; the average aspect ratio of prior austenite grains at the 1/4 thickness position from the surface is 3.00-5.50; and the standard deviation of hardness in the region between a 3/8 thickness position and a 5/8 thickness position from the surface is 25 Hv or less.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 38/60 - 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
82.
SEALED CAN BODY, BATTERY, METHOD FOR MANUFACTURING SEALED CAN BODY, AND METHOD FOR MANUFACTURING BATTERY
The sealed can body according to one embodiment of the present disclosure is provided with a body and a lid. The body is a single bent metal plate. The body comprises: a bottom surface which is continuous with one short side of the lid, the long sides of the bottom surface being along the lid in the vertical direction; two long wall surfaces which are continuous with the long sides of the lid, the long sides of the long wall surfaces being along the lid in the vertical direction; a short wall surface which faces the lid; and one top surface which is continuous with the other short side of the lid, the long sides of the top surface being along the lid in the vertical direction. The bottom surface and the two long wall surfaces are continuous with each other via a bent portion of the metal plate. The top surface and the two long wall surfaces are continuous with each other via a bent portion of the metal plate. A first welded portion extending from the lid body to the short wall surface is present inside the top surface. A second welded portion extending from the top surface to the bottom surface is present on the short wall surface. The top surface and the short wall surface are continuous with each other via a third welded portion extending from one of the long wall surfaces to the other long wall surface.
H01M 50/131 - Boîtiers primairesFourreaux ou enveloppes caractérisés par les propriétés physiques, p. ex. la perméabilité au gaz, les dimensions ou la résistance à la chaleur
This method for manufacturing a press-molded article (10) comprises: a preparation step for preparing a patchwork blank (20); and a molding step for obtaining the press-molded article (10) by cold-pressing the patchwork blank (20) using molds (30, 30A, 30B, 30C). A welded part (23) of the patchwork blank (20) is disposed on vertical walls (12, 13) of the press-molded article (10). In the molding step, dies (32, 32B) are pressed against the patchwork blank (20) by bending position adjustment means of the molds (30, 30A, 30B, 30C) so as to suppress bending of the patchwork blank (20) at the position of the welded part (23).
This steel sheet has a specific chemical composition; has a ferrite phase area percentage of least 98% at a position at a depth of 1/4 from the sheet surface in the direction of thickness; and contains one or more oxides selected from the group consisting of Mn, Cr, and Al, where the number density of inclusions exceeding 0.5 μm but no greater than 10 μm is 300 to 800 inclusions/mm2.
Disclosed is a technique through which metallization rate can be increased by raising the internal pressure in a furnace when producing reduced iron by a direct hydrogen reduction process that uses a shaft furnace. A method for producing reduced iron according to the present disclosure includes reducing an iron oxide raw material with a reducing gas inside a shaft furnace. The method for producing reduced iron according to the present disclosure is characterized in that the reducing gas contains 80 vol% or more hydrogen gas, the output level V (Nm3/t-DRI) of hydrogen gas supplied to the shaft furnace and the temperature T(°C) of the reducing gas supplied to the shaft furnace are controlled so as to satisfy the relationship V ≥ 0.0094 × T2 - 20.5 × T + 12,400, and the gauge pressure at the furnace top of the shaft furnace is controlled so as to exceed 0 MPa.
ddd is 0.50-0.95 times the plate thickness t of the reference part, the plate thickness reduction part is formed from the end face to a position separated from the end face by a predetermined distance L in a direction perpendicular to the end face, and the predetermined distance L is 0.30-3.0 times the plate thickness t.
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.
This steel sheet has a predetermined chemical composition and has, at a position corresponding to 1/2 of the sheet thickness, a metal structure in which when the total length of grain boundaries of prior austenite grains is Lt in units of μm and the total circumferential length of the prior austenite grains approximate to an ellipse is Le in units of μm, the unevenness degree of the grain boundaries of the prior austenite grains, as represented by expression (1), is at most 3.20. Expression (1): 2×(Lt/Le)
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
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 38/60 - 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 method for manufacturing a structural member (10) is provided with a step for preparing a blank (30) and a step for shaping the blank (30) into the structural member (10). The blank (30) includes a first portion (31) and a second portion (32) continuous with the first portion (31). The structural member (10) includes a first member (11) and a second member (12). In the shaping step, in the state in which a mold (40) is restraining the first member (11) from a first direction (D1) and is restraining flanges (123, 123a, 123b) of the second member (12) from a second direction (D2), a top plate (121) and vertical walls (122, 122a, 122b) of the second member (12) are shaped by the mold (40) from the second direction (D2).
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 railway vehicle (1) includes a service apparatus (7) for a vehicular body (3), and an air supply source (8). The air supply source (8) supplies compressed air to the service apparatus (7). The compressed air is generated by a compressor (9). A control device (10) for the railway vehicle (1) comprises: an acquisition unit (11); a calculation unit (12); and a command unit (14). The acquisition unit (11) acquires pressure information (Ip) of the air supply source (8). The calculation unit (12) calculates, on the basis of the pressure information (Ip), a running rate (R) of the compressor (9), which is the ratio of an uptrend time (Tu) of the pressure of the air supply source (8) with respect to the sum of the uptrend time (Tu) and a downtrend time (Td) of the pressure of the air supply source (8). The command unit (14) transmits, to the service apparatus (7), a command to stop the operation of the service apparatus (7) when the running rate (R) exceeds a prescribed threshold (A).
B61F 5/24 - Moyens pour amortir ou minimiser les mouvements de roulis, lacet, galop ou tangage des châssis
B61C 17/12 - Organes de commandeDispositions pour la commande des locomotives à partir de points éloignés à bord du train ou lorsque des éléments de traction multiples sont utilisés
A steel material according to the present disclosure has a chemical composition containing, in terms of mass%, 0.10-0.40% C, 0.01-0.45% Si, 0.30-0.95% Mn, not more than 0.030% P, not more than 0.025% S, more than 0.50 and up to 1.80% Cr, 0.005-0.100% Al, not more than 0.0250% N, and not more than 0.0050% O with the remainder being Fe and impurities, wherein: the total area ratio of ferrite and pearlite in the microstructure is not less than 95%; an average equivalent circle diameter DN of nitrides having an equivalent circle diameter of not less than 20 nm is not more than 70 nm; and a sample standard deviation SDN of the equivalent circle diameter of the nitrides is not more than 45 nm.
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
C22C 38/18 - Alliages ferreux, p. ex. aciers alliés contenant du chrome
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
97.
METHOD FOR REFINING MOLTEN IRON IN ELECTRIC FURNACE
A method for manufacturing a structural member (10) comprises a step for preparing a blank (30) and a step for shaping the blank (30) into a structural member (10). In the blank (30), an end face of a first metal sheet (31) and an end face of a second metal sheet (32) are, in a state of being butted against each other, joined by continuous welding. The structural member (10) includes a first member (11) and a second member (12). In the shaping step, in a state in which flanges (123, 123a, 123b) of the second member (12) are restrained from a second direction (D2) and the first member (11) is restrained from a first direction (D1) by a mold (40), a top plate (121) and vertical walls (122, 122a, 122b) of the second member (12) are shaped by the mold (40) from the second direction (D2).
This method for producing a structural member (10) comprises a step for preparing a blank (30) and a step for molding the blank (30) into the structural member (10). In the blank (30), an end of a first metal plate (31) is joined to an end of a second metal plate (32) by welding with the ends overlapping each other. The structural member (10) includes a first member (11) and a second member (12). In the molding step, a top plate (121) and vertical walls (122, 122a, 122b) of the second member (12) are molded from a second direction (D2) by a mold (40) with the first member (11) constrained from a first direction (D1) by the mold (40) and flanges (123, 123a, 123b) of the second member (12) constrained from the second direction (D2).
This abnormality detection method for a railway vehicle (1) comprises a preparation step, a vibrating step, a detection step, and a determination step. In the preparation step, the railway vehicle (1) is prepared. The railway vehicle (1) includes a bogie (2), a car body (3), an actuator (11), and an acceleration sensor (12). The actuator (11) is disposed between the bogie (2) and the car body (3). In the vibrating step, the car body (3) is vibrated at a predetermined vibration frequency using the actuator (11). In the detection step, the acceleration of the vibrated car body (3) is detected using the acceleration sensor (12). In the determination step, it is determined that an abnormality has occurred in a component of the railway vehicle (1) if the frequency of the detected acceleration of the car body (3) is different from the vibration frequency.
B61F 5/24 - Moyens pour amortir ou minimiser les mouvements de roulis, lacet, galop ou tangage des châssis
G01H 17/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores non prévue dans les autres groupes de la présente sous-classe
