Sintering materials include: a crushed product of a compression-molded product obtained by crushing the compression-molded product obtained by compressing and molding an aggregate of carbonized wood; and at least one of coke breeze or anthracite, and the compression-molded product has an envelope density of 0.6 g/cm3 or more.
A martensitic stainless steel bar material according to the present disclosure contains, in mass%, 0.08-0.60% of C, 0.1-2.0% of Si, 0.1-3.0% of Mn, 0.10% or less of P, 0.150-0.400% of S, 11.0-16.0% of Cr, and 0.015% or less of O. In a cross-section perpendicular to the axial direction of the martensitic stainless steel bar material, the midpoint of a line segment connecting the center of gravity and a point on a surface at which the distance from the center of gravity to the surface is minimum is defined as a midpoint position. In this case, in an observation field including the midpoint position and including the midpoint position in a vertical cross-section parallel to the line segment and the axial direction, the average circle-equivalent diameter of Mn sulfides is 4.0 µm or less, and the number of Mn sulfides per unit area is 0.010 per µm2or more. In an observation field including a position corresponding to the center of gravity in the vertical cross-section, the average circle-equivalent diameter of Mn sulfides is more than 4.0 µm, and the number of Mn sulfides per unit area is less than 0.010 per µm2.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B21B 1/16 - 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 du fil métallique ou un matériau semblable de petite section
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome 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
3.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET, WOUND CORE, AND LAMINATED CORE
Provided are a grain-oriented electromagnetic steel sheet with which it is possible to favorably control the flow of magnetic flux in the sheet thickness direction between adjacent steel sheets when stacked, a method for manufacturing a grain-oriented electromagnetic steel sheet, and a wound core which exhibits low iron loss. This grain-oriented electromagnetic steel sheet comprises, within a region measuring 200 μm in width in a specific direction parallel to the surface of the steel sheet in a cross-section orthogonal to the surface of the steel sheet, tensile strain regions 13, 14 into which a plurality of tensile strains in the specific direction are introduced, and a plurality of compressive strain regions 12 into which compressive strain in the specific direction is introduced. The grain-oriented electromagnetic steel sheet satisfies relationship (1), where LO is the shortest distance from the point of maximum strain in the compressive strain region having the greatest area to the nearest steel sheet surface, and LA(n) is the average value of the shortest distances from the maximum strain point in the two tensile strain regions having the greatest areas to the steel sheet surface. Relationship (1): 1.00 < LO/LA(n) < 16.00
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
H01F 1/16 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de feuilles
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p. ex. à grains orientés
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
4.
METHOD FOR CHARGING REDUCED IRON AND REDUCED IRON CHARGING CHUTE
Provided is a method for charging reduced iron (11) into an electric furnace (1) for melting the reduced iron (11) using a reduced iron charging chute (3). When an obstacle with which the reduced iron (11) collides is installed within a range of 200 mm from the outlet of the reduced iron charging chute (3), the obstacle is projected onto the chute outlet surface of the reduced iron charging chute (3), and the maximum inscribed circle of a region through which the reduced iron (11) can pass is defined as the maximum inscribed circle, the ratio d/s between the diameter d [mm] of the maximum inscribed circle and the long diameter s [mm] of the reduced iron falls within a predetermined range with respect to the charging speed k [t/min] of the reduced iron.
C21C 5/52 - Fabrication de l'acier au four électrique
F27B 3/08 - Fours à sole, p. ex. fours à réverbérationFours à arc électrique à chauffage électrique, p. ex. fours à arc électrique, avec ou sans une autre source de chaleur
F27D 3/10 - Chargement direct par trémies ou gouttières
Provided is a cold-rolled steel sheet having a chemical composition consisting of, in mass %, C: 0.0005 to 0.0070%, Si: 0.01 to 1.50%, Mn: 0.05 to 1.50%, P: 0.001 to 0.150%, S: 0.0005 to 0.0100%, Al: 0.005 to 0.100%, N: 0.0010 to 0.0200%, Ti: 0.010 to 0.150%, Sn: 0.020 to 0.080%, an optional element, and the balance: Fe and an impurity, wherein formulas [Ti-48/32×S-48/14×N-48/12×C≥−0.010] and [5.0≤11Si+33Mn+21Mo+17(Cr+Cu+Ni)−30Al≤50.0] are satisfied, rL is 1.50 or more, rC is 1.50 or more, rD is 1.50 or more, mr is 1.70 or more, and Δr falls within a range of −0.40 to 0.40.
To further improve corrosion resistance in a near-toe zone.
To further improve corrosion resistance in a near-toe zone.
A welded joint according to the present invention includes a first steel sheet and a second steel sheet connected to a weld bead part whose extension direction is set as a long side in plan view, wherein: the first and second steel sheets each have a heat-affected zone and a non-heat-affected zone; in the first and second steel sheet, at least either the first steel sheet or the second steel sheet has a plating layer having a predetermined chemical composition in the non-heat-affected zone. When a cross section is observed by a scanning electron microscope, regarding a region, with a specific position near a toe set as a starting point, in a range from the starting point to 100 μm, an average area ratio of an Fe—Al metal structure is 0 to 95%, an average area ratio of a Mg—Zn metal structure is 5 to 100%, and an average area ratio of an η-Zn phase is 3 area % or less in the plating layer.
A method for manufacturing a structural member includes a heating step of heating a starting material made of a metal sheet and a shaping step of shaping the heated starting material into the structural member using a die. The die includes a lower die, a pad, and upper dies. A top surface of the lower die includes a top surface body and projecting portions. The pad faces the top surface body. In the shaping step, while the starting material is sandwiched between the top surface body and the pad, and the starting material is not sandwiched between the projecting portions, the upper dies, and the pad, the upper dies and the lower die are moved relatively toward each other to press the starting material.
A cold-rolled steel sheet has a predetermined chemical composition, at a surface layer area which is in a range of 10 to 20 μm from a surface in a sheet thickness direction, a microstructure includes, by volume percentage, 10% to 95% of ferrite and a remainder of one or more selected from martensite, bainite, pearlite, cementite, and retained austenite, at a ¼ thickness position which is in a range of ⅛ to ⅜ of a sheet thickness from the surface in the sheet thickness direction, the microstructure includes, by volume percentage, 0% to 60% of ferrite, 0% to 3% of retained austenite, and a remainder of one or more selected from martensite and bainite, a volume percentage of tempered martensite in the martensite is 50% or more, a ratio of a dislocation density at the surface layer area to a dislocation density at the ¼ thickness position is 0.20 or more and less than 0.90, and a tensile strength is 1,180 MPa or more.
A steel sheet has a predetermined chemical composition, in a microstructure at a ¼ depth position, the total of area ratios of ferrite and bainite is 0% to 60%, an area ratio of martensite is 40% to 100%, and the total of area ratios of pearlite and residual austenite is 0% to 10%, and in a surface layer part, a number density of carbides containing B and having a minor axis of 0.2 μm or more is 0.0030 particles/μm2 or less.
A coated steel material having a base material and a zinc-rich coating material formed on a surface of the base material, wherein the chemical composition of the base material comprises, in mass%, 0.010-2.00% of Sn, and the corrosion area ratio on the surface of the base material is 5-40%.
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 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
11.
WELDED PLATED STEEL PIPE HAVING EXCELLENT WELD CORROSION RESISTANCE
[Problem] To ensure the corrosion resistance of a weld and the vicinity thereof even in a highly corrosive environment. [Solution] A steel pipe according to the present invention includes, in a cross section: a first region in which a first coating layer containing a prescribed component is present; a second region in which a second coating layer containing a prescribed component is present; and a third region which is located between the first region and the second region and in which a third coating layer is present. The third coating layer has a metallographic structure including a phase A dispersed in the third coating layer and a phase B unevenly distributed in an interface portion on the steel base side of the third coating layer. The phase A occupies 30.0-70.0% in total with respect to the total cross-sectional area of the third coating layer. In the third region, the length of a region in which the thickness of the third coating layer is less than 5.0 µm is less than 100.0 µm, and the region in which the thickness is less than 5.0 µm occupies 40.0% or less in total with respect to the total length of the third coating layer.
Provided are: a grain-oriented electromagnetic steel sheet capable of preferably controlling the flow of magnetic flux between adjacent steel sheets when laminated; a method for manufacturing the grain-oriented electromagnetic steel sheet; and a wound core. This grain-oriented electromagnetic steel sheet has, within a 200 μm wide region in a specific direction parallel to the surface of the steel sheet in a cross-section orthogonal to the surface of the steel sheet, a first tensile strain region and a second tensile strain region, which are two tensile strain regions into which tensile strain in the specific direction has been introduced, and a compressive strain region 12 into which compressive strain in the specific direction has been introduced. The first tensile strain region 14A and the second tensile strain region 14B are disposed with the compressive strain region 12 interposed therebetween in the specific direction, are defined by points at which the amount of compressive strain in the compressive strain region 12 is maximum, and are in a state in which the shapes of the first tensile strain region 14A and the second tensile strain region 14B and/or the distribution of the magnitudes of the amounts of tensile strain are different from each other with respect to a symmetry axis A0 extending in a direction perpendicular to the surface of the steel sheet.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
H01F 1/16 - Aimants ou corps magnétiques, caractérisés par les matériaux magnétiques appropriésEmploi de matériaux spécifiés pour leurs propriétés magnétiques en matériaux inorganiques caractérisés par leur coercivité en matériaux magnétiques doux métaux ou alliages sous forme de feuilles
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p. ex. à grains orientés
C22C 38/16 - Alliages ferreux, p. ex. aciers alliés contenant du cuivre
13.
HOT BRIQUETTED IRON AND HOT BRIQUETTED IRON MANUFACTURING METHOD
In prior art, it was considered difficult to manufacture hot briquetted iron in which both a high average carbon concentration and a prescribed porosity are achieved. A hot briquetted iron according to the present disclosure has an average carbon concentration of greater than 1.6 mass% and less than or equal to 10.0 mass%, and a porosity of greater than 15 vol% and less than or equal to 40 vol%. This hot briquetted iron can be manufactured by performing a carbonization treatment on a hot briquetted product that was obtained by hot briquetting reduced iron. Here, the hot briquetted product prior to the carbonization treatment has an average carbon concentration of less than or equal to 1.6 mass% and a porosity of greater than 15 vol% and less than or equal to 40 vol%, and the hot briquetted product after the carbonization treatment has an average carbon concentration of greater than 1.6 mass% and less than or equal to 10.0 mass%, and a porosity of greater than 15 vol% and less than or equal to 40 vol%.
CH4CH4 of the carburizing gas and the time t of the carburization treatment are adjusted such that the carbon content in the reduced iron after the carburization treatment reaches a target value.
Provided is a hot rolled steel sheet having a predetermined chemical composition and a microstructure comprising, by area %, at least one of ferrite and bainite: 80 to 98% in total, and martensite: 2 to 10%, wherein when deeming a boundary with an orientation difference of 15° or more as a grain boundary and defining a region surrounded by grain boundaries and having a circle equivalent diameter of 0.3 μm or more as a crystal grain, a ratio of crystal grains with an orientation difference in grains of 5 to 14° is, by area %, 10 to 60%, and a surface roughness Ra is less than 1.50 μm and a difference of maximum value and minimum value in the surface roughness Ra is 0.50 μm or less.
The shapes of the linear grooves formed for magnetic domain refinement and the Sa values of the surface roughness at the bottom surfaces of the groove inside parts and the side surfaces of the groove inside parts are controlled to within certain ranges whereby the core loss of the grain-oriented electrical steel sheet is further decreased.
The shapes of the linear grooves formed for magnetic domain refinement and the Sa values of the surface roughness at the bottom surfaces of the groove inside parts and the side surfaces of the groove inside parts are controlled to within certain ranges whereby the core loss of the grain-oriented electrical steel sheet is further decreased.
Grain-oriented electrical steel sheet comprised of steel sheet containing, by mass %, Si: 2.50 to 4.50% and Mn: 0.01 to 0.15% and having a balance of Fe and impurities and having a steel sheet surface on which linear grooves extending in a direction forming a 0 to 30° angle with a direction perpendicular to rolling direction are formed at a 2 to 10 mm pitch, in which grain-oriented electrical steel sheet, a depth D of the grooves is 10 to 40 μm, a width W of the grooves is 20 to 200 μm, an Sabottom value of surface roughness of a bottom surface of a groove inside part is 1.0 to 5.0 μm, and an Saside value of surface roughnesses of side surfaces of the groove inside part is 1.0 to 5.0 μm.
Provided is a hot-stamp formed body comprising a steel base material and a plating layer arranged on a surface of the steel base material, wherein the plating layer has a predetermined chemical composition, a mean C concentration from a surface of the steel base material down to 1 μm in a depth direction is 0.25 mass % or less, the steel base material comprises, by area ratio, martensite at 90% or more, the plating layer includes an η-Zn phase, an amount of deposition of the plating layer is 50 g/m2 or more per surface, and the Vickers hardness is 400 HV or more.
A method for manufacturing a cylindrical member includes a preparation step and a processing step. In the preparation step, a workpiece material is prepared. In the processing step, the workpiece material is pressed in the axial direction of the workpiece material by an axial press die. In addition, in the processing step, a bead is formed on a circumferential wall by pressing a plate die into the circumferential wall while rotating the workpiece material about the central axis relative to the plate die. An end surface of the plate die includes arc-shaped shoulder portions. When each radius of curvature of the shoulder portions is represented by Rp, the plate thickness of the circumferential wall is represented by t, and the pressing amount of the plate die is represented by X, Rp, t, and X satisfy the following formulae (1) and (2): 0.20≤Rp/t (1), X/Rp≤20.5 (2).
A hot-rolled steel sheet has a predetermined chemical composition, in which at a depth position of ¼ of a sheet thickness, a microstructure is formed of 20 area % or more of ferrite, 40 area % or more of pearlite, and 0 area % or more and 10 area % or less of a remainder in microstructure, and ferrite grains to be measured by an electron backscattering diffraction method satisfy a predetermined relationship.
To further improve the corrosion resistance of a rear surface of a welded joint. The welded joint according to the present invention relates to a welded joint including a first steel sheet and a second steel sheet that are connected to a welding bead part with an extension direction set as a longitudinal direction in plan view. The direction perpendicular to the extension direction of the welding bead part and the direction normal to the surface of the second steel sheet in a non-heat-affected zone is defined as the X-axis direction, and at the rear surface of the welded joint, a second plating layer containing a Zn—Mg structure is present on the welding bead part or on a heat-affected zone within a range starting from the center of the welding bead part and the heat-affected zone up to 1 mm on both sides in the X-axis direction, and the ratio of ΣLi to a length of 100 μm of a field of view obtained by observing a cross section with an electron microscope is 0.05 or more. Further, in a cross section in a range starting from the above-described center up to 5 mm on both sides in the X-axis direction, an average thickness of a ZnO layer present within the range is 1.0 μm or less.
An austenite-based stainless steel pipe is provided that has large diameter and large wall thickness and that provides high creep strength, good SCC resistance and good SRC resistance. An austenite-based stainless steel pipe has a chemical composition including, in mass %: up to 0.030% C; 0.10 to 1.00% Si; 0.10 to 2.00% Mn; 15.00 to 25.00% Cr; 6.00 to 15.00% Ni; 0.020 to 0.200% N; up to 0.030% sol. Al; 0.001 to 0.045% P; up to 0.010% S; and 0.20 to 1.00% Nb, the steel pipe having an outer diameter not smaller than 200 mm, a wall thickness not smaller than 15 mm, an austenite crystal grain size of 20 to 300 μm, and a recrystallization ratio X not lower than 0.90.
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
A grain-oriented electrical steel sheet includes: a silicon steel sheet; an oxide layer formed of one or more kinds of Mg, Al, and Si that is formed on a surface of the silicon steel sheet; and an insulating coating layer that is formed on a surface of the oxide layer, in which an oxide of one or more kinds of Mg, Al, and Si having an equivalent circle diameter of 0.1 to 3.0 μm is present at a density of 0.010 to 0.200 grains/μm2 in the silicon steel sheet in a range of 5 μm in a sheet thickness direction from an interface between the silicon steel sheet and the oxide layer, flat grains are present on the surface side of the silicon steel sheet, in a cross section in the sheet thickness direction, a length of grain boundaries of the flat grains accounts for 50% or more of a length of the interface between the silicon steel sheet and the oxide layer, and a plurality of linear thermal strains extending in a direction having an angle of 80 to 100° with respect to a rolling direction are formed on the surface of the silicon steel sheet at intervals of 1.0 to 20.0 mm in the rolling direction.
A grain-oriented electrical steel sheet includes a steel sheet having a surface in which a plurality of grooves extending in a direction intersecting a rolling direction and having a depth in a sheet thickness direction are formed. In a cross section of the steel sheet parallel to the rolling direction and parallel to the sheet thickness direction, at least one projection is present on a side surface or a bottom surface of the groove, the projection has a maximum height of 2 to 50 μm and a maximum width of 2 to 50 μm, and the orientation difference between the average crystal orientation of the projection and the Goss orientation is 10 degrees or more.
Provided is a method for producing sintered ore using a Dwight-Lloyd type sintering machine, which includes an ignition furnace for initial ignition and a reignition furnace for reignition arranged at a predetermined distance downstream of the ignition furnace and which advances sintering by downward suction, the method including: using, as bonding agents for a blended material, a low combustible carbonaceous material with a combustion start temperature exceeding 550 degrees C. and a highly combustible carbonaceous material with a combustion start temperature of 550 degrees C. or less, and a ratio of the highly combustible carbonaceous material with a particle size of 2.8 mm or more being 30 mass % or more and 80 mass % or less.
The seamless steel pipe has a chemical composition described in the specification, and the chemical composition satisfies [WT/(5C+Mo+Cr)≥1.00] in conjunction with a wall thickness WT (mm), and satisfies [GN−1.51×(Mn+85P−30Ca)≥8.50] in conjunction with a prior-γ grain size number GN. The seamless steel pipe has a tensile strength of 1000 MPa or more, an elongation after fracture is 8.0% or more, and a critical hydrogen concentration of 2.5 ppm or more.
C22C 38/54 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du bore
B60R 21/26 - Moyens gonflables de retenue ou d'immobilisation des occupants prévus pour se gonfler lors d'un choc ou en cas de choc imminent, p. ex. sacs gonflables caractérisés par la source de fluide de gonflage ou par les moyens de commande de l'écoulement du fluide de gonflage
B60R 21/268 - Moyens gonflables de retenue ou d'immobilisation des occupants prévus pour se gonfler lors d'un choc ou en cas de choc imminent, p. ex. sacs gonflables caractérisés par la source de fluide de gonflage ou par les moyens de commande de l'écoulement du fluide de gonflage utilisant l'émission instantanée de gaz comprimé stocké
C21D 6/00 - Traitement thermique des alliages ferreux
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/42 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du cuivre
C22C 38/44 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du molybdène ou du tungstène
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
C22C 38/48 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du niobium ou du tantale
C22C 38/50 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
26.
ROTOR, ROTOR CORE, INDUCTION MOTOR, AND METHOD OF DESIGNING INDUCTION MOTOR
A rotor includes a rotor core (31) and a plurality of secondary conductors (32) disposed in the rotor core (31) at an interval in a circumferential direction of the rotor core (31), a plurality of insertion holes (34) into which the secondary conductors (32) are inserted are formed in the rotor core (31), a slot (35) open to an outside in the radial direction is provided outside each secondary conductor (32) of the rotor core (31) in a radial direction of the rotor core (31), the secondary conductor (32) is exposed to the outside in the radial direction through the slot (35), the rotor core (31) includes a pair of end surfaces (36, 37) provided so as to face each other with the slot (35) interposed therebetween in the circumferential direction, at least one of each secondary conductor (32) or each insertion hole (34) has a shape symmetrical in the circumferential direction with respect to a reference line (Lc) defined so as to intersect a center axis of the rotor core (31) and pass through a center of the secondary conductor (32) in the circumferential direction, and the pair of end surfaces (36, 37) are asymmetrical in the circumferential direction with respect to the reference line (Lc).
To further improve corrosion resistance of a weld overlap portion in a welded joint formed by lap fillet welding using galvanized steel sheets as a material. The present invention relates to a welded joint including a first steel sheet and a second steel sheet connected to a weld bead zone with an extension direction set as a longitudinal direction in plan view, in a weld overlap portion, a joint gap is present, at least one surface of the first steel sheet and one surface of the second steel sheet, the one surfaces facing each other, each include a base iron and a plating layer on the base iron, and in a cross-sectional view cut in a direction perpendicular to the extension direction, the distance between an end of a region that is closest to the weld bead zone and where the thickness of the plating layer is less than 1 μm, the end that is farther from the weld bead zone, and a tip of the weld overlap portion in a direction perpendicular to the extension direction and the direction normal to the surface of the second steel sheet is 1000 μm or less.
A non-oriented electromagnetic steel sheet (1) according to one embodiment of the present invention is provided with a base metal steel sheet (10) and an insulating coating film (20) that is formed on the surface of the base metal steel sheet (10). The insulating coating film (20) contains a metal phosphate (201), and 5 to 35 parts by mass of an organic resin (202) per 100 parts by mass of the metal phosphate (201). The organic resin (202) contains 5 parts by mass or more of an amino resin per 100 parts by mass of the metal phosphate (201).
An oil-well metal pipe according to the present disclosure includes a pipe main body including a first end portion and a second end portion. The pipe main body includes a pin formed at the first end portion, and a box formed at the second end portion. The pin includes a pin contact surface including an external thread part. The box includes a box contact surface including an internal thread part. The oil-well metal pipe further includes a Ni plating layer formed on at least one of the pin contact surface and the box contact surface, and a Zn—Ni alloy plating layer formed on the Ni plating layer. The deposition amount of the Ni plating layer is 6.00 g/m2 or more.
This hot-dip galvanized steel sheet comprises: a steel sheet having a prescribed chemical composition; and a plating layer that is present on the surface of the steel sheet and whose Zn content is 90.00 mass% or greater. Wt, which is the plating adherence amount per one surface of the plating layer, is 30.0-120.0 g/m2. Wf, which is the Fe adherence amount per one surface in the plating layer, is 0.40-3.00 g/m2. Ia, which is an Al barrier index represented using Wa, which is the Al adherence amount per one surface in the plating layer, the Wt, and the Wf, is 150 mg/m2 or greater. When the hot-dip galvanized steel sheet is analyzed using glow discharge optical emission spectroscopy in the sheet thickness direction of the steel sheet from the surface of the plating layer, at least one of the relationships (tB – tAl) ≥ 10.0 and tB/tAl ≥ 1.50 is satisfied, where tB is the time in seconds from the start of the analysis until the detection of the maximum value of the emission intensity of B, and tAl is the time in seconds from the start of the analysis until the detection of the maximum value of the emission intensity of Al.
This hot-dip galvanized steel sheet comprises a steel sheet that has a prescribed chemical composition, and a plating layer that is present on the surface of the steel sheet and has a Zn content of 90.00% or more in terms of mass%. Wt, which is the plating adhesion weight per surface of the plating layer, is 30.0-120.0 g/m2. Wf, which is the Fe adhesion weight per surface of the plating layer, is 0.40-3.00 g/m2. Ia, which is the Al barrier index expressed by Ia = Wa-(Wt-Wf)×0.002, is 150 mg/m2 or more. In a cross section in the sheet thickness direction of the steel sheet including the steel sheet and the plating layer, if a line connecting points at which a Zn content of 90 mass% is obtained through EPMA analysis is defined as a 90% line, and a line connecting points at which a Zn content of 40 mass% is obtained is defined as a 40% line, then the number density d of regions in which the interval between the 90% line and the 40% line in the sheet thickness direction is 2.0 μm or more is 20/mm or more.
The present invention provides: a steel sheet that contains Ni, Cu, Cr, and Sn, that has a high N content, and that has excellent draw moldability; and a component including the same. Provided are: a steel sheet characterized by having a prescribed chemical composition in which the chemical composition satisfies [Ti]-[N]×47.88/14≥([N]-0.0021)0.44222 is 0.06 particles/μm2 or more; and a component including the steel sheet.
This titanium alloy material is formed of a titanium alloy, and has an area fraction of the α phase of 80% or more in a cross-section that is parallel to the thickness direction and the rolling direction. In the cross-section, the α phase that has an angle between the width direction and the c-axis direction of 0° to 30° inclusive is included in an area fraction of 50% or more. The cross-section has a first region which is composed of the α phase that has a KAM value of 0.1 or more and an angle between the width direction and the c-axis direction of 0° to 20° inclusive, and a second region which is composed of the α phase that has an angle between the width direction and the c-axis direction of more than 20° but not more than 90°. Both the first region and the second region are present along the thickness direction of the cross-section.
The grain-oriented electrical steel sheet includes a base steel sheet having a predetermined chemical composition, a glass coating provided on a surface of the base steel sheet, and a tension-applying insulation coating provided on a surface of the glass coating. The base steel sheet has a texture oriented in the Goss orientation. In the base steel sheet, when an average dispersion angle from an ideal Goss orientation with a rolled surface normal direction ND as the rotation axis is defined as α (°), an average dispersion angle from the ideal Goss orientation with an orthogonal-to-rolling direction TD as the rotation axis is defined as β(°), and an average dispersion angle from the ideal Goss orientation with a rolling direction RD as the rotation axis is defined as γ (°), α, β, and γ satisfy the following formula (1). 0.0≤|β|<2.5<|α|<4.0≤|γ|≤10.0 . . . (1)
This grain-oriented electrical steel sheet includes a steel sheet having a surface in which a plurality of grooves extending in a direction intersecting a rolling direction and having a depth in a sheet thickness direction are formed. In a cross section parallel to the rolling direction and parallel to the sheet thickness direction, when a distance from an inlet portion of a groove to an opposite inlet portion of the groove is defined as a width of the groove, a region equivalent to the width of the groove from the inlet portion of the groove of the steel sheet in a direction opposite to a center of the groove in the rolling direction is defined as a groove edge portion, and a surface in a region separated from the inlet portion of the groove in the direction opposite to the center of the groove in the rolling direction is defined as a reference plane, the groove edge portion has a projection that is a region having a width of 1 μm or more and a projection height of 1 μm or more from the reference plane, and an area fraction of Goss oriented grains of the projection is 10% or more.
B24B 29/00 - Machines ou dispositifs pour polir des surfaces de pièces au moyen d'outils en matière souple ou flexible avec ou sans application de produits de polissage solides ou liquides
C21D 6/00 - Traitement thermique des alliages ferreux
Provided is a hot rolled steel sheet having a predetermined chemical composition and a steel structure comprising, by area %, total of martensite and retained austenite: 2 to 30%, total of pearlite and cementite: 0 to 3%, and balance: ferrite and bainite, wherein a ratio of an area which crystal grains having a size of more than 12 μm occupy with respect to an observed area is 50% or less, in a texture measured at a sheet thickness center part, a maximum pole density of a group of {100}<011>, {211}<011>, {311}<011>, {110}<011>, and {332}<113> orientations is 8.0 or less, and when dividing an observed field of the steel structure in a sheet thickness direction at 2 μm intervals and measuring the total of the martensite and retained austenite at each divided region, a maximum value of the total is 3.0 times or less of an average value of the total.
To improve both the slow temperature increasing rate of an overlapped part and the one-sheet part being heated for an excessive amount of time when an Al-based plated steel sheet is used as a raw material. The present invention is a heating method of heating an overlapped blank for hot stamping in a heating furnace at a temperature T1, the overlapped blank for hot stamping including: a first Al-based plated steel sheet having a sheet thickness d1; and a second Al-based plated steel sheet having a sheet thickness d2, the second Al-based plated steel sheet overlapped and welded on the first A-based plated steel sheet, having a smaller area than the first Al-based plated steel sheet, and including a carbon-based black coating at a surface of the Al-based plated steel sheet on the side not in contact with the first Al-based plated steel sheet, in which the overlapped blank for hot stamping satisfies Expression (a) to Expression (c), and a heating temperature is set to t1 or more and t2+Δt2 or less.
This information processing device comprises a processor. The processor acquires environmental data indicating environmental conditions under which oil country tubular goods are to be used, determines, on the basis of the environmental data, a lease fee for leasing the oil country tubular goods, and outputs information corresponding to the lease fee.
This grain-oriented electrical steel sheet is provided with a base steel sheet and an insulating coating film, wherein the insulating coating film contains, in terms of mass%, 10%-20% of P, 18%-25% of Si, 1.1%-2.7% of V, and 2%-5% of Al as a chemical composition, and Cr is limited to less than 0.1%.
C23C 22/00 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
H01F 1/147 - Alliages caractérisés par leur composition
A steel material according to the present disclosure contains, in mass%, 0.0300% or less of C, 0.200% or less of Si, 0.10-0.50% of Mn, 0.0300% or less of P, 0.0300% or less of S, 0.0200% or less of Al, less than 0.0080% of N, 0.001-0.030% of O, and 0.0030-0.0130% of Sb, the remaining portion being Fe and impurities, and Fn defined by formula (1) being 10.0-22.0. (1): 4.26×ln(Sb×(10×Sb+6×P))+47.05 To each element sign in formula (1), the contained amount of a corresponding element is assigned in mass%, and ln in formula (1) indicates natural logarithm.
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 %, martensite and tempered martensite is more than 92.0% and 100.0% or less in total, residual austenite is less than 3.0%, ferrite is less than 5.0%, an E value is 11.0 or more, an I value is less than 1.020, 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 circle 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 circle equivalent radius of 0.005 μm to 0.050 μm is 1.0×105 pieces/cm2 or more.
A frame member includes a closed cross-section part and a stress concentration part. The closed cross-section part includes a flat part and a ridge part. The flat part has a width of 70.0 mm or less. The stress concentration part is provided in at least one of the flat part and the ridge part. The Vickers hardness of a central portion in a sheet thickness direction of the flat part is 350 Hv or more. The standard deviation ratio is more than 1.0, and the standard deviation ratio is obtained by dividing the standard deviation of the frequency distribution of the Vickers hardness of a near-surface portion of the flat part by the standard deviation of the frequency distribution of the Vickers hardness of the central portion in the sheet thickness direction of the flat 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
B62D 29/00 - Carrosseries caractérisées par le matériau utilisé
This method for operating a blast furnace includes an injection step for injecting biomass coal or biomass coal and pulverized coal, together with a hydrogen-based reducing gas, into the interior of the blast furnace from a normal tuyere. In the injection step, when the biomass coal is injected, the biomass coal to be injected from the normal tuyere is selected using a carbon content, a hydrogen content, and heat of decomposition as management indices.
222O gas from the blast furnace gas. When injecting the biomass coal during the first injection step, the biomass coal to be injected from the conventional tuyere is selected using carbon content, hydrogen content, and decomposition heat as control parameters.
The C content in the chemical composition of an electric resistance welded steel pipe (1) according to the present disclosure is 0.19-0.35 mass%, and the tensile strength of the electric resistance welded steel pipe (1) is 1700 MPa or more. In a cross-section perpendicular to the pipe axis direction of a metal flow rising portion (3), a metal flow angle (AN), which is an angle between the outer circumferential surface of the metal flow rising portion (3) and a metal flow on the outer circumferential surface side, is 35-80°. In the cross-section, the hardness ratio RH of the average hardness (GPa) in a band-shaped region having a hardness of 8.5 GPa or more, obtained by a nanoindentation method, to the average hardness (GPa) in a band-shaped region having a hardness of 7.5 GPa or less is 1.8 or less. The FN value defined by equation (1) using the metal flow angle (AN) and the hardness ratio RH is 130 or less. (1): FN = ANRH
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
B23K 13/00 - Soudage par chauffage au moyen d'un courant haute fréquence
B23K 31/00 - Procédés relevant de la présente sous-classe, spécialement adaptés à des objets ou des buts particuliers, mais non couverts par un seul des groupes principaux
C21D 1/18 - DurcissementTrempe avec ou sans revenu ultérieur
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
C21D 9/50 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour joints de soudure
C22C 38/14 - Alliages ferreux, p. ex. aciers alliés contenant du titane ou du zirconium
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
222O gas from a blast furnace gas from a shaft part tuyere to the inside of the blast furnace. In the first blowing step, when blowing the biomass coal, the biomass coal blown from the normal tuyere is selected using the carbon content percentage and heat of decomposition as management indicators.
The present invention addresses the problem of achieving excellent safety and electrolyte resistance. Provided as a solution is a battery case for lithium ion batteries comprising: a case body section which accommodates a battery unit that has a positive electrode, a negative electrode, and a separator, and an electrolyte solution that contains a lithium salt; and a lid section which seals the case body section, wherein the material of the case body section and the lid section is a steel material having a chemical composition containing, in terms of mass%, 1.0-9.9% Cr, 0.5-10.0% Al, 0.1-5.0% Mn, 0.002-0.100% C, 0.01-0.50% Si, 0.005-0.070% P, 0.001-0.250% S, 0.001-0.020% N, and 0.0001-0.0030% B, with the remainder being Fe and impurities. The battery case has a welded part where the case body section and the lid section are welded.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
Provided is a pellet production method by which the occurrence of bursting can be suppressed. An iron ore pellet production method according to the present disclosure comprises: (a) a step for crushing iron ore; (b) a step for using the crushed iron ore to obtain a pellet raw material; (c) a step for granulating or molding the pellet raw material to obtain green pellets; and (d) a step for firing the green pellets, wherein the product XYZ (mass%·mm·°C/min) of the average crystalline water content X (mass%) of the iron ore constituting the pellet raw material, the average particle diameter Y (mm) of the green pellets before the firing, and a temperature rising rate Z (°C/min) from 250°C to 700°C during the firing is controlled to be equal to or less than a predetermined allowable value A.
This method of producing reduced iron includes: an iron oxide raw material preheating step of preheating an iron oxide raw material to a predetermined preheating temperature; an iron oxide charging step of charging the preheated iron oxide raw material into a shaft furnace; a partial combustion step of generating a reducing gas by partially combusting a feed gas with oxygen gas; and a blowing step of blowing the reducing gas into the shaft furnace in a state in which the preheated iron oxide raw material is charged.
A Ni-based alloy tube in which sufficient nitriding resistance is obtained in a high temperature ammonia environment is provided. A Ni-based alloy tube according to the present disclosure has a chemical composition consisting of, in mass%, C: 0.150% or less, Si: more than 1.00 to 2.50%, Mn: 0.01 to 1.00%, P: 0.0100% or less, S: 0.0100% or less, Cu: 1.50 to 3.00%, Cr: 25.00 to 35.00%, Fe: 2.00 to 6.00%, Mo: 1.00 to 3.00%, Ti: 0.10 to 1.00%, B: 0.0001 to 0.0100%, Ca: 0.0001 to 0.0050%, and REM: 0.005 to 0.100%, with the balance being Ni and impurities. A developed interfacial area ratio Sdr of an inner surface of the Ni- based alloy tube satisfies Formula (1): [Image disponible dans le document PDF, Image available in the PDF document] where, a content of a corresponding element in percent by mass is substituted for each symbol of an element in Formula (1).
B21C 23/08 - Fabrication de fils, de barres, de tubes
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
A threaded connection (100) includes a pin (10) and a box (20) and, in a made up state, sealing surfaces (12, 22) come into interference contact with each other, a male thread root (112) comes into interference contact with a female thread crest (212), and load flanks (114, 214) come into pressure contact with each other. In an individual state, in a case in which a surface of the box (20) is covered by an undercoating (25) that includes an alloy plating layer (251) and by a solid lubricating coating (26) in a single form, a coating thickness (tS214) of the solid lubricating coating (26) on the female thread load flank (214) is smaller than a coating thickness (tS212) of the solid lubricating coating (26) on the female thread crest (212), and a coating thickness (tS22) of the solid lubricating coating (26) on the box sealing surface (22) is larger than the coating thickness (tS214) of the solid lubricating coating (26) on the female thread load flank (214).
A duplex stainless steel material that has excellent general corrosion resistance and stress corrosion cracking resistance even in a supercritical corrosive environment is provided. A duplex stainless steel material according to the present disclosure has a chemical composition described in the description, and has a microstructure composed of, in volume ratio, ferrite in an amount of 35 to 65%, with the balance being austenite. In addition, in the duplex stainless steel material according to the present disclosure, a dislocation density in the ferrite, and a dislocation density in the austenite satisfy the following Formula (1): [Image disponible dans le document PDF, Image available in the PDF document] where, in Formula (1), a dislocation density in the austenite in m-2 is substituted for , and a dislocation density in the ferrite in m-2 is substituted for .
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
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 38/60 - 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
55.
BLANK, PRODUCTION METHOD FOR STRUCTURAL MEMBER AND STRUCTURAL MEMBER
A blank (30, 30A, 30B) includes a plurality of steel sheets. The plurality of steel sheets are disposed and joined to form two elongated parts (34L, 34R) and a coupling part (35). The plurality of steel sheets include a first steel sheet (31) and a second steel sheet (32). An end part of the second steel sheet (32) forms an overlap part (361) with an end part of the first steel sheet (31). The overlap part (361) has a largest sheet thickness (tmax) in the blank (30, 30A, 30B). A surface (311, 321) of at least one of the first steel sheet (31) and the second steel sheet (32) that is located on an outer side of the overlap part (361) is subjected to a treatment for increasing the emissivity compared with at least one of other surfaces of the plurality of steel sheets.
A waste plastic processing facility includes: a pneumatic separator (10) to which waste plastic is supplied; an agglomerator (20) configured to agglomerate the waste plastic separated as a light fraction by the pneumatic separator (10); and a coke oven (30) configured such that the waste plastic separated as a heavy fraction by the pneumatic separator (10) and the waste plastic agglomerated by the agglomerator are charged into the coke oven, the coke oven being configured to pyrolyze the waste plastic.
C08J 11/12 - Récupération ou traitement des résidus des polymères par coupure des chaînes moléculaires des polymères ou rupture des liaisons de réticulation par voie chimique, p. ex. dévulcanisation uniquement par traitement à la chaleur sèche
C10B 53/07 - Distillation destructive spécialement conçue pour des matières premières solides particulières ou sous forme spéciale de matières polymères synthétiques, p. ex. pneumatiques
57.
LAMINATED CORE MANUFACTURING APPARATUS AND METHOD OF MANUFACTURING LAMINATED CORE
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
58.
PROCESSING DEVICE, PROCESSING METHOD, PROGRAM, AND CORE
A processing device (410) generates a distribution of a generation index of a magnetic flux obstructing part in a core to be designed, based on a distribution of magnetic properties in a design region of an original core, and determines a region of the magnetic flux obstructing part in the core based on the distribution of the generation index.
G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]
H02K 1/276 - Aimants encastrés dans le noyau magnétique, p. ex. aimants permanents internes [IPM]
59.
PLATE END PORTION DETECTION DEVICE AND PLATE END PORTION DETECTION METHOD
A plate end portion detection device including plural ferromagnetic core members that are arranged side by side along a width direction of the plate end portion detection device and that are respectively provided with an excitation coil, plural detection coils respectively corresponding to the plurality of ferromagnetic core members and configured to detect a signal according to a strength of magnetic field obtained so as to reflect an effect of the steel plate on a magnetic field generated by the excitation coil of the corresponding ferromagnetic core member when an alternating current voltage is applied to the excitation coil, a voltage control unit configured to control a voltage applied to the excitation coils of the plural ferromagnetic core members, a computation processing unit configured to detect a position of the plate end portion of the steel plate from a relationship between an amount of change in the signal detected by the detection coil and a position of the detection coil when the alternating current voltage is applied to the excitation coil. The voltage control unit performs control to apply a voltage to the excitation coil of at least one ferromagnetic core member from among ferromagnetic core members present in a range in which magnetic flux leaks from the ferromagnetic core member provided with the excitation coil applied with the alternating current voltage among the plurality of ferromagnetic core members.
G01N 27/904 - 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 utilisant les courants de Foucault avec plusieurs capteurs
60.
PLATE END PORTION DETECTION DEVICE AND PLATE END PORTION DETECTION METHOD
A plate end portion detection device includes a single or plural magnetic field generation units configured to generate a magnetic field that are installed in a space arising between two adjacent conveyance rolls and a path that the steel plate passes along, plural detection units that are installed side by side along a width direction of the plate end portion detection device corresponding to a plate width direction of the steel plate and that are configured to detect a signal according to a strength of magnetic field obtained so as to reflect an effect of the steel plate on a magnetic field generated by the magnetic field generation unit, and a computation processing unit configured to detect a position of the plate end portion of the steel plate. The computation processing unit acquires a relationship between the amount of change f of the signal as detected by each of the detection units and the position x of each of the detection units in the width direction, approximates the acquired relationship with a function , and detects a position as computed from the following Equation (1) as the position of the plate end portion of the steel plate. [Image disponible dans le document PDF, Image available in the PDF document] Herein, Lmax is a maximum value of the function , Lmin is a minimum value of the function , and is a predetermined coefficient.
G01N 27/904 - 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 utilisant les courants de Foucault avec plusieurs capteurs
61.
STEEL SHEET, PART INCLUDING SAME, AND METHOD OF PRODUCTION OF STEEL SHEET
Provided are a steel sheet having a predetermined chemical composition and a microstructure comprising, by area%, ferrite: 10 to 40%, martensite: 60 to 90%, bainite: 0 to 10%, and at least one of pearlite and retained austenite: 0 to 5% in total, wherein, when dividing a region of 150 m150 m at a sheet thickness 1/4 position of a cross-section perpendicular to a sheet surface into nine equal parts, calculating number densities of ferrite at the divided regions, and designating a mean value of these as Nm, differences of number densities of ferrite at divided regions adjoining in a sheet thickness direction are all Nm0.60 or less, a part including the same, and a method of production of the steel sheet.
C21D 8/02 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de produits plats ou de bandes
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
62.
MANUFACTURING DEVICE AND MANUFACTURING METHOD FOR LAMINATED CORE
Provided are a manufacturing device for a laminated core and a manufacturing method for a laminated core that facilitate the assembly of the adhesive applicator and reduce the time required for maintenance. The manufacturing device 1 for a laminated core 4 according to the present invention includes an adhesive applicator 6 that applies an adhesive to portions of the steel sheet 2 corresponding to core sheets 3, and a reciprocating drive portion 7 that switches whether or not the adhesive is applied by the adhesive applicator 6, wherein the adhesive applicator 6 includes a discharge portion 60 configured to discharge the adhesive from a tip of a passage 60a, the adhesive applicator 6 or the discharge portion 60 is composed of a solid or non-porous organic resin member, and the passage 60a is defined by wall surfaces of the solid or non-porous organic resin, and when the application of the adhesive is performed, the adhesive applicator 6 is disposed such that the adhesive discharged from the tip of the discharge portion 60 is brought into contact with the steel sheet 2 in response to an up and down movement of the steel sheet 2 accompanying the forming of the core sheets 3 by punching from the steel sheet 2.
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchetsEntaillage
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
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 threaded connection is provided that provides good sealability even in very low temperatures. The threaded connection is a threaded connection for steel pipe including a tubular pin and a tubular box, the pin and the box adapted to be made up as the pin is screwed into the box, the pin including a pin sealing surface and a male thread, the box including a box sealing surface corresponding to the pin sealing surface and a female thread corresponding to the male thread, the threaded connection satisfying the following expression, (1): [Math. 1] The variables in expression (1) are defined in the description.
A laminated core manufacturing apparatus includes: an upper mold and a lower mold that press and punch out a core sheet from a strip-shaped steel sheet that is fed downstream; a lamination part that is provided at the lower mold and that laminates the punched-out core; an application part that is provided further toward an upstream side of the lower mold than the lamination part in a feeding direction of the strip-shaped steel sheet, that applies an adhesive to a lower surface of the strip-shaped steel sheet, that contacts a restriction part provided at the lower mold, and that is restricted from movement in a direction intersecting a mold opening and closing direction; and a discharge mechanism that is provided at the lower mold and that discharges adhesive surplus to application from the application part.
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 hearth roll for a continuous annealing furnace, the hearth roll comprising a thermal spray coating on a surface of the hearth roll, wherein the thermal spray coating comprises main components consisting of a Co-based alloy, a carbide of a transition metal, and a double oxide; and impurities, the double oxide consists of one or two types of a first double oxide consisting of Al and a rare earth element and a second double oxide consisting of a transition metal and a rare earth element, and when the main components are 100 mass %, a content of the Co-based alloy is 25 mass % or more and 50 mass % or less, a content of the carbide is 5 mass % or more and 30 mass % or less, and a content of the double oxide is 20 mass % or more and 45 mass % or less.
C21D 9/00 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet
C21D 9/56 - Fours continus pour bandes ou fils métalliques
C23C 4/073 - Matériaux métalliques contenant des alliages MCrAl ou MCrAlY où M est le nickel, le cobalt ou le fer, avec ou sans éléments non métalliques
C23C 4/14 - Revêtement par pulvérisation du matériau de revêtement à l'état fondu, p. ex. par pulvérisation à l'aide d'une flamme, d'un plasma ou d'une décharge électrique caractérisé par le procédé de pulvérisation pour revêtir des objets allongés
66.
NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND DIE FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET
This non-grain-oriented electrical steel sheet is a non-grain-oriented electrical steel sheet including a silicon steel sheet as a base material, wherein the silicon steel sheet has a predetermined mechanical property depending on a direction with respect to a rolling direction, and the difference between a maximum value and a minimum value of diameters of circular holes after punching with a substantially circular die is 0.20% or less of the average value of the maximum value and the minimum value.
A steel member has a predetermined chemical composition. In a case where a position corresponding to a depth of ¼ of a thickness from a surface in a thickness direction is defined as a ¼-depth position, a maximum B content in a range to a depth of 10 μm from the surface in the thickness direction is 5 times or more a B content at the ¼-depth position. In a case where a C content is measured from the surface in the thickness direction using GDS and the distance from the surface to a position where the C content is equal to a C content at the ¼-depth position for the first time is defined as a decarburization depth, the decarburization depth is 20 μm or more. The Vickers hardness at the ¼-depth position is in a range of 310 to 890.
Provided is a method for producing iron ore pellets, the method suppressing dew condensation on the surfaces of green pellets in a low-temperature portion of a drying chamber on the most upstream side of a traveling grate furnace or a grate kiln furnace. The method for producing iron ore pellets uses a traveling grate furnace or a grate kiln furnace, and includes preheating iron ore green pellets before charging the green pellets into a drying chamber so that the temperature of the iron ore green pellets does not drop below the dew point of a gas that comes into contact with the green pellets while the green pellets are passed through the drying chamber on the most upstream side of the traveling grate furnace or the grate kiln furnace.
Provided is a hot-stamp molded body comprising a first region (11) that includes a steel sheet (11a) and that is the portion with the greatest thickness, and a second region (12) that includes a steel sheet (12a) and that is connected to the first region (11) directly or via a weld metal (13). The steel sheet (11a) and the steel sheet (12a) each have a reference hardness of not less than 400 HV1, and the absolute value of the difference therebetween is not more than 200 HV1. The quenching degree of the steel sheet (11a) is 0.90-1.10. The quenching degree of the steel sheet (12a) at a 10 mm position is 0.90-1.10. The quenching degree of the steel sheet (12a) at a 60 mm position is 0.40-0.80.
The present invention provides a surface-treated metal sheet having excellent corrosion resistance while also having excellent weldability for continuous spot welding, and an automotive member comprising the same. Provided are: a surface-treated metal sheet comprising a metal sheet and a coating film having a thickness of 0.5 to 5.0 μm disposed on the surface of the metal sheet, wherein the coating film contains doped oxide particles, an anti-corrosion pigment, and a binder resin, the anti-corrosion pigment contains a Si-containing compound, and the ratio (A/B) of the amount (vol%) (A) of the doped oxide particles to the amount (vol%) (B) of the Si-containing compound is 2.80 to 6.00; and an automotive member comprising the same.
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
B32B 15/092 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique comprenant des résines époxy
B32B 27/18 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers
B32B 27/38 - Produits stratifiés composés essentiellement de résine synthétique comprenant des résines époxy
An Fe-Ni-Cr alloy material according to the present disclosure contains, by mass, C: 0.001-0.050%, Si: 0.05-1.00%, Mn: 0.05-2.00%, P: 0.035% or less, S: 0.0015% or less, Cr: 18.0-25.0%, Ni: 18.0-50.0%, Al: 0.05-1.00%, Ti: 0.05-1.00%, N: 0.020% or less, and V: 0.05-0.25%, the balance being Fe and impurities, and the amount of solid solution V being 0.05% or more by mass.
A bar steel according to an aspect of the present invention includes a matrix and a layer covering a surface of the matrix and containing Si, Cr, Fe, and O, in which the matrix contains, by unit mass %, C: 0.10 to 0.30%, Si: 0.51 to 2.40%, Mn: 0.50 to 1.50%, P: 0.050% or less, S: 0.050% or less, Cr: 0.05 to 2.00%, Al: 0.010 to 0.100%, N: 0.003 to 0.030%, and O: 0.0050% or less, the balance includes iron and impurities, and a Cr/Si mass concentration ratio of the layer is 0.10 or more.
C21D 6/00 - Traitement thermique des alliages ferreux
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 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/02 - Alliages ferreux, p. ex. aciers alliés contenant du silicium
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/20 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cuivre
C22C 38/22 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du molybdène ou du tungstène
C22C 38/24 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du vanadium
C22C 38/26 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du niobium ou du tantale
C22C 38/30 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du cobalt
C22C 38/32 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du bore
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
73.
STRUCTURE AROUND THROUGH-HOLE IN METAL SHEET, BLANK, AND AUTOMOTIVE PART
Metal sheet 200 includes flat portion 102, and processed portion 204 in which through-hole 104a is formed in a center portion. Processed portion 204 includes flat surface 406 formed on one side in a thickness direction A of flat surface 102a of flat portion 102, and an inclined surface 408 extending toward flat surface 102a from flat surface 406, and satisfies “1.0≤W≤−3.8314×(R/t)+11.47≤5.0” and “0.1≤H≤−0.6604×(R/t)+2.0489≤1.0.” In the formulas, W is length (mm) of inclined surface 408 in a direction orthogonal to the thickness direction A, R is a curvature radius (mm) of through-hole 104a when viewed from the thickness direction A, t is thickness (mm) of the metal sheet 200, and His distance (mm) between the flat surface 102a and the flat surface 406 in the thickness direction A.
This titanium plate or titanium ring has a chemical composition which includes, in mass%, 0.010-0.045% Fe, 0.010-0.150% O, 0-1.00% Cu, 0-2.00% Al, 0-2.00% Sn, 0-2.00% Zr, 0-0.080% C, 0-0.050% N, and 0-0.015% H, with the remainder comprising Ti and impurities. In said titanium plate or titanium ring, the crystal grain boundary length per unit area is 50 mm-1 or less, and the standard deviation of a Gaussian function is 15° or less, said standard deviation being obtained by fitting, to the Gaussian function, a graph indicating each area ratio of the crystal grains per 5° increment of the angle formed by the plate thickness direction and the c-axis of the hexagonal close-packed structure.
A welded joint 100 includes a first steel sheet member 11 that is a hot stamp–molded body of a galvanized steel sheet, a second steel sheet member 12, and resistance spot weld parts 13 that join the first steel sheet member 11 and the second steel sheet member 12. When a first position 11a is a position on the first steel sheet member 11 that is separated by at least 12 mm but less than 30 mm from a resistance spot weld part 13a and a second position 11b is a position that is separated by at least 30 mm from every resistance spot weld part 13 and is not in contact with the other member, the absolute value of the difference between the Vickers hardness at the first position 11a and the Vickers hardness at the second position 11b is no more than 10.0% of the Vickers hardness at the second position 11b, the thickness of a zinc oxide layer at the first position 11a is no more than 85% of the thickness of the zinc oxide layer at the second position 11b, and the thickness of a solid solution layer as measured at the first position 11a is no more than 90% of the thickness of the solid solution layer as measured at the second position 11b.
This press-formed container component has a corner portion in which: at θ = 0.5 × θm, a point PR3 does not exist on a line segment LT and exists ahead of a point PR1 on the extension line of the line segment LT; at θ = 0.5 × θm, a point PR4 does not exist on a line segment LU and exists ahead of a point PR2 on the extension line of the line segment LU; and at θ = 0.5 × θm, the formula (1) is satisfied. Formula (1): 0.020 ≤ DS ≤ 0.230
B21D 22/30 - Emboutissage pour finir des objets déjà formés par emboutissage
H01M 50/233 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par les propriétés physiques des boîtiers ou des bâtis, p. ex. dimensions
H01M 50/249 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux aéronefs ou aux véhicules, p. ex. aux automobiles ou aux trains
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 9/46 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour tôles
C22C 30/04 - Alliages contenant moins de 50% en poids de chaque constituant contenant de l'étain ou du plomb
C22C 38/60 - Alliages ferreux, p. ex. aciers alliés contenant du plomb, du sélénium, du tellure, de l'antimoine, ou plus de 0,04% en poids de soufre
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
78.
LAP FILLET WELDED JOINT, METHOD FOR PRODUCING SAME, AND AUTOMOTIVE COMPONENT
This lap fillet welded joint comprises: a first steel sheet 11; a second steel sheet 12 overlapped onto the first steel sheet 11; and a weld bead 13 formed at a corner between a surface of the first steel sheet 11 and an end face of the second steel sheet 12. A zinc-based plating 15 having a thickness of 2.0 to 20.0 μm is provided on the surface of the first steel sheet 11 and/or a surface of the second steel sheet 12. A steady-state section 131 of the weld bead 13 has wavy weld toes 134, 135 and a porosity defect rate of less than 20.0%. In plan view of the lap fillet welded joint from the weld bead side, the amount of spatter adhesion at a particle size of 300 μm or more in a weld bead peripheral region within 20 mm from both ends of the weld bead in the length direction and within 60 mm from both ends of the weld bead in the width direction is 0.25/cm2 or less.
B23K 9/23 - Soudage ou découpage à l'arc tenant compte des propriétés des matériaux à souder
B23K 9/02 - Soudage de joints continusSupportsPièces rapportées
B23K 9/09 - Agencements ou circuits pour le soudage à l'arc à courant ou tension pulsés
B23K 9/12 - Alimentation automatique en électrodes ou en pièces ou déplacement automatique des électrodes ou des pièces pour le soudage ou le découpage à l'arc en lignes continues ou par points
79.
FERRITIC STAINLESS STEEL MATERIAL AND HYDROGEN ENGINE
This Ni steel has a chemical composition containing, in mass%, 0.010-0.090% C, 0.080% or less Si, 0.30% or less Mn, 8.50% to 10.50% Ni, 0.50-3.00% Cr, 0.010-0.060% Al, 0.0060% or less N, 0.0035% or less O, 0.0080% or less P, 0.0030% or less S, 0-1.00% Cu, 0-0.10% Mo, 0-0.020% Nb, 0-0.080% V, 0-0.020% Ti, 0-0.0020% B, 0-0.0040% Ca, and 0-0.0050% REM, with the remainder being Fe and impurities, wherein the limit CTOD value measured at a test temperature of -253°C is 0.10 mm or more.
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
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
An Ni steel sheet according to the present invention has a chemical composition that is, by mass%, 0.010%–0.100% C, no more than 0.40% Si, 0.15%–0.80% Mn, at least 8.50% but less than 10.50% Ni, 0.010%–0.060% Al, no more than 0.0060% N, no more than 0.0035% O, no more than 0.0080% P, no more than 0.0030% S, 0%–1.00% Cu, 0%–3.00% Cr, 0%–0.10% Mo, 0%–0.030% Nb, 0%–0.080% V, 0%–0.020% Ti, 0%–0.0020% B, 0%–0.0040% Ca, and 0%–0.0050% REM, the remainder being Fe and impurities. The chemical composition also satisfies [C-(Cr/18+Mo/8+Nb/8+V/5)≤0.040]. The energy absorbed by the Ni steel sheet under liquid helium–cooled Charpy testing after warm working is at least 150 J.
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
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
82.
LAP FILET WELDED JOINT AND T-SHAPED FILET WELDED JOINT
A structural member (10) comprises vertical walls (131, 132), first flange ridges (141, 142), first flanges (151, 152), second flange ridges (161, 162), and second flanges (171, 172). The first flanges (151, 152) are connected to the vertical walls (131, 132) via the first flange ridges (141, 142). The second flanges (171, 172) are connected to the vertical walls (131, 132), the first flange ridges (141, 142) and the first flanges (151, 152) via the second flange ridges (161, 162). In a cross-section of the structural member (10), when the radius of curvature of a portion of the second flange ridges (161, 162) adjacent to the first flange ridges (141, 142) is defined as RL, and the thickness of the structural member (10) is defined as t, RL/t < 23.0.
B62D 21/02 - Châssis, c.-à-d. armature sur laquelle une carrosserie peut être montée comprenant des éléments d'armature disposés longitudinalement ou transversalement
A brake disc includes a disc body and fins. The disc body decreases in thickness as the disc body extends inward in a radial direction. The fins are radially disposed on a back surface of the disc body. At least one of the fins has a bolt hole at a central portion of the fin in the radial direction. The disc body includes projections. The projections are formed on a portion of the back surface positioned outward from the bolt hole in the radial direction. The fins each include a top surface and a convex portion. The convex portion protrudes inward from an imaginary plane in the radial direction. The imaginary plane passes an end portion of the top surface and an inner circumferential edge of the back surface.
The present disclosure provides a high-strength steel plate having an improved post-molding appearance. The steel plate of the present disclosure has a specific chemical composition and is characterized by comprising a metal structure that includes 75-97% of ferrite and 3-25% of a hard phase in terms of area, the standard deviation of the hard phase percentage for the rolling right-angle direction being 0.75% or less.
This method for refining molten iron includes denitrifying molten iron in an electric furnace in which at least two sets of lance groups including an oxygen-feeding lance and a carbon-feeding lance are installed, wherein: in the at least two sets of lance groups, oxygen and a carbonaceous material are sprayed so as to achieve confluent blowing in which an oxygen-feeding jet from the oxygen-feeding lance and a carbonaceous-material jet from the carbon-feeding lance collide with each other above the surface of the molten iron; in the at least two sets of lance groups, the rate at which oxygen is fed from the oxygen-feeding lance is 0.083 Nm3/min or greater per ton of molten iron; and the spraying is performed under conditions for forming an ignition point of high carbon concentration and an ignition point of high oxygen concentration.
Provided is a steel sheet that is characterized by having a prescribed chemical composition and that is characterized in that: the steel structure at a position 1/4 of the thickness from the surface includes 8-30% of retained austenite in area%; when the Mn concentration in a depth range of 10-30 µm from the surface is measured through EPMA and when a region having an Mn concentration that is 1.5-fold or greater than the average Mn concentration in said depth range is defined as an Mn-concentrated region, the number density in the Mn-concentrated region having an area of 0.3 µm2or more is 10 pieces/1000 µm2 or more; when GDS measurement is performed, the ratio X/Y of the average C concentration X in said depth range and the bulk C concentration Y is 0.20-0.50; and the steel sheet has a Vickers hardness of 300 Hv or more. Also provided is a method for producing said steel sheet.
A composite material according to the present disclosure comprises a carbon-sulfur composite and a protective layer formed on a surface of the carbon-sulfur composite. The carbon-sulfur composite contains a porous carbon material and a sulfur material supported by the porous carbon material. The protective layer contains at least one of non-graphitic carbon and a carbon precursor as a main component, and has a film thickness of 0.5 nm or more and a crystallite size Lc of 4.1 nm to 8.0 nm.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
89.
COMPOSITE MATERIAL, POSITIVE ELECTRODE, AND BATTERY
A composite material according to the present disclosure comprises a carbon-sulfur composite and a protective layer formed on a surface of the carbon-sulfur composite. The carbon-sulfur composite contains a porous carbon material and a sulfur material supported by the porous carbon material. The protective layer contains at least one of non-graphitic carbon and a carbon precursor as a main component, and has a film thickness of 1.0 nm or more and a crystallite size Lc of 1.0 nm to 4.0 nm.
H01M 4/36 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs
H01M 4/58 - Emploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de composés inorganiques autres que les oxydes ou les hydroxydes, p. ex. sulfures, séléniures, tellurures, halogénures ou LiCoFyEmploi de substances spécifiées comme matériaux actifs, masses actives, liquides actifs de structures polyanioniques, p. ex. phosphates, silicates ou borates
90.
PRESS FORMING APPARATUS AND METHOD FOR PRODUCING PRESS-FORMED ARTICLE
A press forming apparatus 300 includes a die 330, a punch 310, and a die pad 320. The die pad 320 is disposed inside the die 330. The die pad 320 is disposed opposed to the punch 310. At a bottom dead center PL, surfaces of the die pad 320 and the punch 310 that extend along a pressing direction P (first and second flange forming portions 313A, 313B, 324A, and 324B) have holes 400A and 400B. At the bottom dead center PL, the surfaces face the die 330. Edge portions 400aA and 400aB of the holes 400A and 400B are formed by the die pad 320 and the punch 310.
This characteristic distribution system comprises: an existing amount acquisition unit that acquires the existing amount that can be distributed to an intermediate product manufactured from a raw material including a characteristic material having at least a specific characteristic and that includes an amount less than or equal to the upper limit value according to the total use amount of the characteristic material for use in manufacturing the intermediate product during a prescribed period; a target acquisition unit that acquires a distribution target intermediate product or the intermediate product and the amount; and a distribution unit that executes distribution processing for distributing at least a part of the existing amount to the acquired distribution target intermediate product.
A spot-welded joint according to an aspect of the present invention includes: a plurality of steel sheets, one or more of the plurality of steel sheets being a high strength steel sheet having a tensile strength of 980 MPa or more; a weld; and a zinc-based-plated layer disposed at least on an overlapping surface of the steel sheets and being in contact with one or more high strength steel sheets, in which the diameter of the nugget is 4.0√Tave or more, Tave being a value obtained by dividing the total thickness in units of mm of the plurality of steel sheets by 2, the concentration of B atoms at a prior austenite grain boundary of the high strength steel sheet in contact with the zinc-based-plated layer at an outside of the weld is 2.0 atm % or more, the average effective grain size of the high strength steel sheet in contact with the zinc-based-plated layer at the outside of the weld is 7.0 μm or less, and the average effective grain size of the heat-affected zone of the high strength steel sheet at an outer end portion of the corona bond formed on the overlapping surface on which the zinc-based-plated layer is disposed and a circumferential edge portion of an indentation formed on a surface on which the zinc-based-plated layer is disposed is 15.0 μm or less.
The chemical composition of this Ni-based alloy tube is, in terms of mass%, 0.005-0.100% of C, 0.010-0.500% of Si, 0.010-0.500% of Mn, 20.00-23.50% of Cr, 8.00-10.50% of Mo, 0.010-0.400% of Ti, 2.50-4.60% in total of Nb and Ta, 0.010-1.50% in total of Cu and Co, 0.010-0.400% of Al, 0.0150% or less of P, 0.0150% or less of S, 0.0010-0.0400% of N, and 0.0100% or less of O, the balance including Ni and impurities. At a thick central portion of the Ni-based alloy tube in a cross-section perpendicular to the longitudinal direction of the Ni-based alloy tube, the number density of inclusions having an Mo content of 5.0 mass% or greater and a maximum length of 10 μm or less is 10-100/mm2, and the average crystal grain size thereof is greater than 8.0.
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22F 1/10 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du nickel ou du cobalt ou de leurs alliages
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
94.
STEEL SHEET, COMPONENT INCLUDING SAME, AND METHOD FOR MANUFACTURING STEEL SHEET
The present invention provides: a steel sheet that has high strength and is provided with a portion having excellent elongation and a portion having excellent hole expandability; a component including the same; and a method for producing a steel sheet. Provided is a steel sheet characterized by having a prescribed chemical composition and comprising a first region and a second region adjacent to each other, the metal structure in the first region containing, in area%, 65-90% of ferrite and 10-35% of martensite, and the metal structure in the second region containing, in area%, 80-100% of bainite and 0-20% of martensite.
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.
The purpose of the present invention is to provide a novel method for recovering rare earth elements, with which it is possible to separate scandium (Sc) from the other rare earth elements contained in steel slag and recover those rare earth elements. Disclosed is a method for recovering rare earth elements contained in steel slag, the method including: a leaching step in which steel slag is brought into contact with an acid so as to obtain a leachate 1; a solvent extraction step 1 in which the pH of the leachate 1 is adjusted and an organic solvent is added thereto so that the leachate 1 is separated into an organic phase 1 and an aqueous phase 1 and extracted; a back extraction step 1 in which an aqueous phase that is back-extracted from the organic phase 1 is separated and extracted as a recovery liquid 1; a precipitation step in which the pH of the aqueous phase 1 is adjusted so as to precipitate a precipitate in the aqueous phase 1; a solid-liquid separation step in which the precipitate is solid-liquid separated from the aqueous phase 1 so as to obtain an aqueous phase 1'; a solvent extraction step 2 in which the pH of the aqueous phase 1' is adjusted and an organic solvent is added thereto so that the aqueous phase 1' is separated into an organic phase 2 and an aqueous phase 2 and extracted; and a back extraction step 2 in which an aqueous phase that is back-extracted from the organic phase 2 is separated and extracted as a recovery liquid 2.
C22B 59/00 - Obtention des métaux des terres rares
B09B 5/00 - Opérations non couvertes par une seule autre sous-classe ou par un seul autre groupe de la présente sous-classe
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
The purpose of the present invention is to provide a method for recovering rare earth elements, with which it is possible to roughly separate a certain rare earth element from the other rare earth elements among the rare earth elements while recovering the rare earth elements from blast furnace slag. This method for recovering rare earth elements comprises: a leaching step in which blast furnace slag is brought into contact with an acid so as to leach the blast furnace slag, thereby obtaining a leachate 1 that contains the rare earth elements; a precipitation step in which an alkali is added to the leachate 1 so as to adjust the pH to a predetermined value, thereby obtaining a leachate 2 that contains a precipitate containing the rare earth elements; and a solid-liquid separation step in which the precipitate is separated from the leachate 2.
C22B 59/00 - Obtention des métaux des terres rares
B09B 5/00 - Opérations non couvertes par une seule autre sous-classe ou par un seul autre groupe de la présente sous-classe
C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques
The present invention provides a steel sheet and a method for producing the steel sheet, said steel sheet being characterized by having a specific chemical composition. The steel sheet is also characterized in that: the steel structure at the position of 1/4 thickness from the surface contains, by area%, 85% or more of martensite, a total of 0-5% of ferrite and bainite, and 1-8% of retained austenite; and when a total of 12 dislocation densities that are obtained by measuring dislocation densities at four positions corresponding to respective apexes of a square having one side of 1 mm in a plane that is parallel to the surface at each of the position of 1/8 thickness, the position of 2/8 thickness, and the position of 3/8 thickness from the surface are defined as a population, the value of (standard deviation of dislocation densities)/(average of dislocation densities) is 0.05-0.50.
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
99.
STAINLESS STEEL WIRE IN AS-DRAWN STATE, HEAT-TREATED STAINLESS STEEL WIRE, AND WIRE FOR STAINLESS STEEL WIRE
Provided is a stainless steel wire in an as-drawn state comprising, in mass%, 0.01-0.20% C, 0.1-4.0% Si, 0.1-10.0% Mn, 2.0-15.0% Ni, 17.0-25.0% Cr, 0.1-4.0% Mo, 0.10-0.50% N, and 0.5-4.0% Cu, wherein a value A expressed by expression (a) is not more than -60, the dislocation density of an austenite phase of the wire is 1×1015/m2to 100×1015/m2, and the processing-induced martensite amount 50 μm from the wire surface layer is not more than 50%. Also provided is a heat-treated stainless steel wire comprising similar components, wherein a recrystallization ratio is not less than 0.80, and crystal grain size in the surface layer is not more than 80 μm.
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
100.
STAINLESS STEEL SHEET AND METHOD FOR PRODUCING SAME, AND BRAKE DISC ROTOR AND METHOD FOR PRODUCING SAME
Provided is a stainless steel sheet which contains, on a mass basis, 0.001-0.150% of C, 0.0010-0.3000% of N, 0.01-3.00% of Si, 0.010-5.000% of Mn, 0.001-0.100% of P, 0.0001-0.1000% of S, 15.0-25.0% of Cr, and 0.010-5.000% of Ni, with the balance being made up of Fe and impurities, wherein: the A value represented by formula (1) is 55 to 150; the area ratio of a structure having a KAM value of 0.00° to 0.65° is 20.0% to 75.0% and the area ratio of a structure having a KAM value of more than 0.65° but not more than 5.00° is 25.0% to 80.0%; and the Vickers hardness is 200 HV to 300 HV. (1) A value = 420C + 470N + 23Ni + 7Mn - 11.5Cr - 11.5Si + 189 In the formula, each element symbol represents the content (%) of the element.
