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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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WO/2023/112891A1 |
A non-oriented electromagnetic steel sheet according to the present invention contains no greater than 0.010% of C, 1.0% to 5.0% (inclusive) of Si, 0.05% to 5.0% (inclusive) of Mn, no greater than 0.1% of P, no greater than 0.01% of S, n...
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WO/2023/112892A1 |
A non-oriented electromagnetic steel sheet according to the present invention contains, in mass%, 0.010% or less C, 1.0 to 5.0% Si, 0.05 to 5.0% Mn, 0.1% or less P, 0.01% or less S, 3.0% or less Al, and 0.005% or less N, the remainder be...
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WO/2023/113444A1 |
The present invention relates to a calcium-containing graphite steel wire rod, steel wire, graphite steel, and a manufacturing method and cutting method therefor and, more particularly, proposes a cutting method for manufacturing industr...
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WO/2023/113428A1 |
The present invention relates to a graphite steel having excellent machinability, and a manufacturing method therefor, and, more specifically, to a calcium-containing graphite steel having a machinability superior to that of normal free-...
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WO/2023/110810A1 |
The invention relates to a steel-based metal wire for reinforcing rubber items selected from among vehicle tyres, tracks and conveyor belts which is obtained by means of a method comprising at least one step of producing a steel wire, re...
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WO/2023/111633A1 |
The invention relates to a method for heating a semi-finished steel product, comprising : a pre-heating step, performed in a pre-heating device comprising a chamber containing solid particles, a heat exchanger, a support able to support ...
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WO/2023/112461A1 |
The present invention provides a steel sheet which has high strength, excellent ductility, high YR and excellent bendability at the same time. This steel sheet has a specific component composition and a steel structure wherein: the area ...
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WO/2023/113453A1 |
The present invention relates to a high-strength steel sheet having excellent formability and a high yield ratio, and a manufacturing method therefor, and, more particularly, to a high-strength steel sheet having excellent formability an...
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WO/2023/113206A1 |
The present invention relates to an austenitic stainless steel and a manufacturing method therefor and, specifically, to an austenitic stainless steel and a manufacturing method therefor, wherein the austenitic stainless steel can secure...
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WO/2023/113442A1 |
The present invention relates to methods for manufacturing a wire rod for cold forging and a screw part, which can manufacture with only quenching heat treatment a part with excellent drilling characteristics, and which can specifically ...
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WO/2023/111604A1 |
The invention relates to a process for conversion materials of hydrocarbon origin, plastics, and plastic waste. The process comprises the steps of storing, sorting, and crushing the plastics and plastic waste, and feeding them into a rea...
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WO/2023/113430A1 |
The present invention relates to a graphite steel wire rod for TV PEM nut parts, graphite steel, and a manufacturing and machining method therefor, and, more particularly, provides a machining method for manufacturing industrial parts an...
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WO/2023/112763A1 |
This hot-rolled steel sheet has a metal structure that contains, in percentage by area, 55% to 95% of bainite, 5% to 30% of residual austenite, 5% or less of fresh martensite, 5% or less of ferrite and 5% or less of pearlite, while havin...
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WO/2023/111837A1 |
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/2023/111760A1 |
The invention relates to a method for heating a semi-finished steel product, comprising : a pre-heating step, performed in a pre-heating device comprising a chamber containing solid particles, a heat exchanger, a support able to support ...
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WO/2023/113387A1 |
The present invention relates to a steel sheet suitable for automobile chassis members, etc., and, more particularly, to an ultra-high strength steel sheet having excellent bendability, and a manufacturing method therefor.
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WO/2023/105846A1 |
A device for producing a steel strip according to the present invention comprises: a first water tank part that retains cooling water in which a steel strip is to be immersed and cooled; a water cooling nozzle unit that is provided at th...
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WO/2023/106204A1 |
A ferritic stainless steel according to one aspect of the present invention contains at most 0.030 mass% of C, 0.01-1.5 mass% of Si, 0.01-1.00 mass% of Mn, at most 0.050 mass% of P, at most 0.005 mass% of S, 15.0-25.0 mass% of Cr, 2.0-4....
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WO/2023/104344A1 |
The present invention relates to a method of controlling carbon potential of an atmosphere in a heating chamber used for a heat treatment of metals or metal alloys. Said method comprises the steps of: providing a flow of an inert gas - h...
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WO/2023/105852A1 |
Provided is a stainless steel containing, in % by mass, 8.00 to 30.00% of Ni, 9.0 to 21.0% of Cr, 0.01 to 3.00% of Mo, 0.01 to 5.00% of Cu, and 0.0010 to 0.10% of N. Furthermore, the first invention contains at least one component select...
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WO/2023/106203A1 |
A ferritic stainless steel according to one aspect of the present invention contains, in % by mass, C: 0.030% or less, Si: 0.01-1.5%, Mn: 0.01-1.00%, P: 0.050% or less, S: 0.005% or less, Cr: 15.0-25.0%, Al: 2.0-4.0%, Ni: 1.00% or less, ...
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