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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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WO/2023/129259A1 |
A high permeability grain oriented electrical steel having a chemistry comprising, all in weight percent, 2.5% to 4.5% silicon, 0.02% to 0.08% carbon, 0.01 to 0.05% aluminum, 0.005% to 0.050% sulfur or selenium, 0.02 to 0.20% manganese, ...
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WO/2023/127413A1 |
Provided is a Cu-Sn containing steel manufacturing method that enables high-temperature processing at a low cost without generating cracks on the surface of a Cu-Sn containing steel even in high-temperature processing using a heating fur...
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WO/2023/037846A9 |
This machine component is composed of steel subjected to quenching and tempering. The machine component has a surface, and the residual austenite quantity A (unit: %) in the surface and the average grain diameter B (unit: µm) of prior a...
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WO/2023/126506A1 |
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. According to the invention, in order to be ab...
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WO/2023/126031A2 |
Disclosed is a method for preparing steel sheet strips via electro-hydrogen cooperation under microwave radiation, belonging to the technical field of ferrous metallurgy. The method, which has near-zero carbon emissions, comprises: prepa...
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WO/2023/121032A1 |
The present invention pertains to a steel plate and a method for manufacturing same. More specifically, the present invention pertains to a steel plate having high strength and excellent impact toughness after deformation, and a method f...
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WO/2023/121200A1 |
A method for manufacturing a non-oriented electrical steel sheet according to one embodiment of the present invention comprises: a step of manufacturing a slab in a steelmaking process by inputting, in weight %, In: 0.0005-0.015%, Sn: 0....
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WO/2023/120475A1 |
The present invention addresses the problem of providing a compression coil spring in which an appropriate amount of residual austenite is made present near the surface thereof by optimizing tempering conditions, and cracking is suppress...
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WO/2023/121133A1 |
The present specification discloses: a steel plate for an exhaust system steel pipe, wherein the steel plate is economical and improved in terms of corrosion resistance and formability by controlling the alloy components and production m...
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WO/2023/121256A1 |
A non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 2.5-4.0% of Si, 0.1-1.5% of Al, and 0.1-1.5% of Mn, with the remainder comprising Fe and inevitable impurities. The non-oriented ...
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WO/2023/121191A1 |
This non-oriented electrical steel sheet comprises: 3.0-4.0 weight% of Si; 0.1-1.5 weight% of Al; 0.1-0.5 weight% of Mn; 2-20 weight% of Cr with respect to the content of Mn; 0.006-0.1 weight% of a sum of Sn and Sb; 0.0010-0.0050 weight%...
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WO/2023/118350A1 |
The invention relates to a high strength steel strip or sheet excellent in ductility and bendability. The invention also relates to a method for producing such steel strip or sheet.
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WO/2023/121221A1 |
According to one aspect of the present invention, an austenitic high-manganese steel having excellent ultra-low temperature toughness in a weld heat-affected zone, and a manufacturing method therefor can be provided.
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WO/2023/121063A1 |
Disclosed in the present specification are a martensitic stainless steel and manufacturing method therefor, wherein the martensitic stainless steel is induced, through control over the alloy composition in terms of Cu, Nb, etc. and manuf...
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WO/2023/120491A1 |
The problem addressed by the present invention is to provide a compression coil spring the fatigue resistance of which is improved by decreasing the quantity of coarsened pro-eutectoid ferrite grains that can become fracture origins. T...
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WO/2023/118516A1 |
A low carbon steel welded tube for low internal pressure applications, wherein the pressure in the tube is, in use, less than 10 kPa, wherein the low carbon steel constituting the welded tube is a hot-rolled steel strip having a thicknes...
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WO/2023/113219A1 |
The present invention relates to: a steel material having high strength and excellent impact toughness, the steel material being usable for a land wind power generator and the like; and a method for manufacturing same.
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WO/2023/113535A1 |
The present invention relates to a cold rolled steel sheet and a method for manufacturing same, the cold rolled steel sheet comprising, in wt%, 0.0003 to 0.003% of C, 0.25 to 0.55% of Mn, 0.001 to 0.03% of Si, 0.0005 to 0.0015% of Al, 0....
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WO/2023/111632A1 |
The invention relates to a method for regulating an atmosphere A inside a furnace, wherein a steel strip having a composition and an exposed surface area A1 is heat treated from a time T0 to a time TS1END and a steel strip, having a comp...
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WO/2023/113554A1 |
A cold rolled steel sheet according to an embodiment of the present invention comprises, by wt%: C: 0.01 to 0.10%; Mn: 0.1 to 0.4%; Al: 0.01 to 0.10%; P: 0.003 to 0.020%; N: 0.001 to 0.006%; S: 0.015% or less; Cr: 0.1 to 0.4%; B: 0.0005 ...
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