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WO/2023/162515A1 |
This method for producing a steel member includes: a carburizing step in which an austenitized steel member obtained by heating a steel member to at least an austenization completion temperature is subjected to carbon infiltration at a c...
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WO/2023/156418A1 |
A metallurgical furnace (1) for performing a thermal treatment of a continuously moving metal strip, preferably under hydrogen protective atmosphere, having : - a hybrid wall lining (2) facing inwardly of the furnace (1), wherein said hy...
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WO/2023/157897A1 |
Provided is a high-strength steel material that exhibits an excellent SSC resistance in sour environments. The steel material according to the present disclosure comprises, in mass%, C : 0.15% to 0.45%, Si : 0.05% to 1.00%, Mn : 0.05% to...
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WO/2023/157297A1 |
The present invention provides: a component for vehicles, the component having excellent fatigue strength; a steel pipe which enables the production of the component for vehicles having excellent fatigue strength; a method for producing ...
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WO/2023/157975A1 |
The present invention provides: a component for vehicles having excellent fatigue strength; a steel pipe which enables the production of a component for vehicles having excellent fatigue strength; a method for producing this steel pipe; ...
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WO/2023/153097A1 |
This cold rolled steel sheet has a predetermined chemical composition, and a metal structure at a quarter depth position, which is a position at quarter of the sheet thickness from the surface of the sheet, comprising, in volume ratio: g...
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WO/2023/153099A1 |
The present invention provides a steel sheet for hot pressing, the steel sheet being prevented from the generation of scales due to a coating layer and being reduced in adhesion of a metal to heating facilities, thereby preventing liquid...
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WO/2023/153185A1 |
The purpose of the present invention is to realize an austenitic stainless steel that is highly productive and with which it is possible to obtain both a reduction in processing load during production and an increase in strength of a fin...
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WO/2023/152906A1 |
The present invention is an electric resistance welded steel pipe for an automobile component including a base material part and an electric resistance welded part. The chemical composition of the base material part includes, by mass, 0....
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WO/2023/153096A1 |
This cold rolled steel sheet has a predetermined chemical composition, and a metal structure at a quarter depth position, which is a position at quarter of the sheet thickness from the surface of the sheet, comprising, in volume ratio: g...
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WO/2023/153184A1 |
The present invention achieves an austenitic stainless steel having high productivity while reducing processing load during production and increasing the strength of the final product. The austenitic stainless steel contains, in mass%, 0...
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WO/2023/148771A1 |
Provided herein is a hot rolled coil cooling apparatus comprises of: an upender assembly including a L-deck capable of tilting about an axis, comprising a first deck and second deck, having a first side and second side, said upender. The...
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WO/2023/149002A1 |
Provided is a steel sheet that has a chemical composition including 0.020-0.100% of C, 1.00-2.50% of Mn, not more than 0.100% of P, not more than 0.0200% of S, 0.005-0.700% Al, not more than 0.0150% of N, not more than 0.0100% of O, etc....
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WO/2023/149374A1 |
This hot-rolled steel sheet has a desired chemical composition and a metal structure, wherein: the average spherical equivalent radius of alloy carbide in ferrite is 0.5-5.0 nm (exclusive of 5.0); the average number density is at least 3...
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WO/2023/149466A1 |
This steel plate has a prescribed chemical composition, and the microstructure of the t/4 region, which is the range from 1/8 to 3/8 of the plate thickness in the plate thickness direction from the surface, contains, as the area ratio, l...
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WO/2023/148087A1 |
The invention relates to a method of manufacturing a low-carbon steel strip having improved formability, the method comprising the steps of: providing a hot-rolled steel strip of a low- carbon steel composition comprising up to about 0.0...
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WO/2023/147719A1 |
The present invention relates to a protective gas supply and recycling method for a cold-rolling annealing furnace, which can comprise the following steps: S1. providing gas to protective gas storage tanks so as to enable each of the sto...
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WO/2023/145025A1 |
Disclosed is an alloyed hot-dip galvanized steel sheet which has excellent appearance and has excellent moldability when press-molded. This alloyed hot-dip galvanized steel sheet comprises a base material steel plate having a prescribed ...
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WO/2023/144019A1 |
The invention relates to a hot-rolled high-strength steel strip having a composition consisting of, in wt.%, 0.02 – 0.13% C, 1.20 – 3.50% Mn; 0.10 – 1.00% Si; 0.05 – 1.0% Mo; 0.02 – 0.70% Al, 0.04 – 0.25% Ti, up to 0.010% N, ...
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WO/2023/145800A1 |
A non-oriented electromagnetic steel sheet (1) according to one embodiment of the present invention is provided with a base material steel sheet (10) and an insulating coating film (20) that is formed on the surface of the base material ...
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WO/2023/145346A1 |
Provided is a high-strength seamless stainless steel pipe for oil wells. The seamless stainless steel pipe according to the present invention has a component composition that contains, expressed in mass%, C : not more than 0.015%, Si : 0...
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WO/2023/145146A1 |
The present invention provides a galvanized steel sheet which has high strength, excellent ductility, excellent work hardening ability in a low strain range, and excellent work hardening ability in a high strain range at the same time. A...
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WO/2023/139936A1 |
Provided is a crankshaft which has excellent fatigue strength and in which the formation of quenching cracks is suppressed. A crankshaft (10) comprising a pin portion (12) and a pin top portion (15), wherein: the pin portion (12) has a s...
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WO/2023/139994A1 |
Provided is a wheel bearing device capable of improving indentation resistance at the outer side of an outer member by reducing a quenching crack and deterioration in crystal grain size as much as possible. The outer member (outer ring (...
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WO/2023/139752A1 |
A steel sheet according to one aspect of the present invention comprises specified chemical components, in which a metal structure in a part corresponding to a depth of 1/4 of the thickness of the steel sheet comprises, in percentage by ...
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WO/2023/139339A1 |
The invention relates to a device (10) for cooling a thermite weld (70) of a rail, comprising - a reservoir (2) suitable for storing a volume of water, - a pump (3), - an electronic control system (4) for controlling the pump (3), - a co...
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WO/2023/139847A1 |
The present invention obtains an electromagnetic steel sheet that is provided with an insulating film having excellent insulation characteristics, that has an excellent appearance, and that provides a high tensile force but exhibits less...
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WO/2023/140239A1 |
Provided is a cold-rolled steel sheet having excellent processability. This cold-rolled steel sheet has a chemical composition containing 0.0050% or less of C, etc., in mass%, and has a metal structure in which the volume percentage of f...
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WO/2023/136038A1 |
Provided is a ferritic stainless steel sheet which is for a clad sheet and which, in terms of mass, comprises not more than 0.03% C, not more than 0.7% Si, not more than 1% Mn, not more than 0.03% P, not more than 0.005% S, 11-19.5% Cr, ...
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WO/2023/134810A1 |
The invention relates to a steel alloy for a large rolling bearing component, having at least 0.17 to maximally 0.23 wt.% of carbon, at least 0.25 to maximally 0.5 wt.% of silicon, at least 0.65 to maximally 0.95 wt.% of manganese, maxim...
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WO/2023/135981A1 |
This hot stamp molded article comprises a base steel material and a plating layer that is formed on the surface of the base steel material; the plating layer has a chemical composition that contains, in mass%, 0.000010% to 3.0% of Sc, mo...
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WO/2023/135982A1 |
This plated steel sheet is provided with a steel substrate, a plating layer formed on the surface of this steel substrate, and an oxidized film formed on the surface of this plating layer. The chemical composition of the plating layer in...
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WO/2023/135932A1 |
Provided is a steel sheet for hot pressing with which it is possible to lower the amount of diffusible hydrogen introduced in a hot pressing step without controlling the atmospheric dew point and which can yield a hot-pressed member havi...
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WO/2023/135983A1 |
Provided is a high-strength steel sheet having a tensile strength of 1320 MPa or more and excellent ductility, hole expansion properties, and delayed fracture resistance. The high-strength steel sheet has a specific component composition...
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WO/2023/135962A1 |
Provided is a hot-dip galvanized steel sheet, in which a base steel sheet has a specified chemical composition, a steel structure contains, in % by volume, 0 to 50% of ferrite, 1% or more of tempered martensite, 5% or more of retained au...
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WO/2023/135980A1 |
The present invention provides a high-strength steel sheet which has a tensile strength of 1,320 MPa or more, while exhibiting excellent bore expanding properties and delayed fracture resistance. This high-strength steel sheet has a spec...
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WO/2023/132350A1 |
A steel sheet for hot stamping which has a base material steel sheet having a prescribed chemical composition and a zinc plating layer formed on the surface of the base material steel sheet, wherein: the microstructure at a 1/4-depth pos...
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WO/2023/132344A1 |
This steel sheet has a specific chemical composition. The metal structure of the steel sheet, in area%, is at least 80.0% tempered martensite, at most 10.0% pearlite, ferrite, and bainite in total, and 1.0% to 10.0% fresh martensite and ...
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WO/2023/132342A1 |
A hot-rolled steel sheet according to the present invention has a specific chemical composition, while having a metal structure that contains, in area%, 25.0% or more of bainite, a total of 70.0% or less of fresh martensite and tempered ...
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WO/2023/132289A1 |
This steel sheet for hot stamping has a specific chemical composition, while having a metal structure that contains, in area%, 75% to 95% of ferrite, 5% to 25% of martensite, and a total of 0% to 5% of pearlite, bainite and cementite; th...
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WO/2023/132351A1 |
A hot-rolled steel sheet according to the present invention has a specific chemical composition, while having a metal structure that contains, in area%, 25.0% to 96.0% of bainite, 70.0% or less of martensite, 4.0% to 12.0% of residual au...
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WO/2023/132244A1 |
Provided is a welded joint comprising stacked multiple steel plates, a spot-welded section having a nugget for joining the multiple steel plates together as well as a press-contact portion and a heat-affected zone which are formed around...
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WO/2023/132349A1 |
This steel sheet for hot stamping has a base steel plate having a predetermined chemical composition and a zinc-based plating layer formed on the surface of the base steel plate, wherein the microstructure at the 1/4 depth position in th...
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WO/2023/132241A1 |
Provided is a welded joint characterized by comprising a plurality of stacked steel sheets, nuggets joining the plurality of steel sheets, and a spot welded section having pressure welded sections and heat affected sections formed around...
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WO/2023/131913A1 |
A spray quenching system including a quench box configured to receive a part for quenching. The system may include mechanical arms disposed within the quench box and thermocouples disposed on the mechanical arms that may be moved to cont...
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WO/2023/132240A1 |
Provided is a plated steel sheet characterized by comprising a base material steel sheet and a plating layer formed on a surface of the base material steel sheet, wherein the plating layer has a prescribed chemical composition, and if th...
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WO/2023/132254A1 |
This hot-rolled steel sheet has a prescribed chemical composition. The metal structure at a position of 1/4 of the sheet thickness and at a position 100 μm from the surface is such that by area, one or more of martensite and tempered ma...
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WO/2023/132237A1 |
The present invention provides a plated steel sheet which is provided with a base steel sheet and a plating layer that is formed on the surface of the base steel sheet, and which is characterized in that: the plating layer has a specific...
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WO/2023/126507A1 |
The invention relates to a heavy plate and a thermomechanical handling method for a starting material, in particular a slab, for the production of the heavy plate consisting of a steel alloy. Optimum toughness values and yield ratio Rp0,...
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WO/2022/172993A9 |
A hot-stamped molded body having: a chemical composition which contains, in mass%, C in the amount of 0.15-0.50%, inclusive, Si in the amount of 0.10-3.00%, inclusive, Mn in the amount of 0.10-3.00%, inclusive, P in an amount less than 0...
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