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WO/2023/007952A1 |
Provided is a wound core for achieving low transformer iron loss and having excellent magnetic characteristics without the use of two or more kinds of raw materials of different magnetic characteristics.　This wound core: is formed from...
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WO/2023/008003A1 |
Provided are a steel sheet having high strength and excellent delayed fracture resistance, and a method for producing the same.　The steel sheet contains, in terms of mass%, 0.15-0.45% C, no more than 1.5% Si, more than 1.7% Mn, no more...
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WO/2023/008513A1 |
This non-oriented electrical steel sheet: contains, as a chemical component, 1.0–5.0 mass% of silicon; has a sheet thickness of 0.10–0.35 mm; and has an average crystal grain size of 30–200 μm. Moreover, a value X, defined as X = ...
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WO/2023/002812A1 |
A steel sheet comprising 0.04-0.16 mass% of C, 0.10-0.50 mass% of Si, 0.60-1.60 mass% of Mn, 0.005-0.030 mass% of P, 0.015-0.050 mass% of Al, 0.005-0.020 mass% of Ti, 0.0005-0.0025 mass% of Ca, 0.0008-0.0025 mass% of O, 0.0005-0.0020 mas...
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WO/2023/000479A1 |
Provided are a hot-rolled, low-temperature-resistant, H-shaped steel with a grade of 420 MPa, and a preparation method therefor. The H-shaped steel comprises the following chemical components in percentages by weight: C: 0.08-0.10%, Siâ‰...
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WO/2023/002986A1 |
Provided is an iron-based sintered alloy valve seat having excellent wear resistance.　The present invention provides an iron-based sintered alloy valve seat for an internal combustion engine, wherein: Si-Cr-Ni-Fe-based and Mo-based int...
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WO/2023/000584A1 |
The present invention relates to the technical field of steel production. Disclosed are a 1000 MPa-grade quenched and tempered hydroelectric steel plate and a production method therefor, comprising the following chemical components in pe...
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WO/2023/002741A1 |
Provided are a metal sheet-quenching apparatus, a continuous annealing facility, a metal sheet-quenching method, a cold-rolled steel sheet production method, and a plated steel sheet production method that prevent shape defects generated...
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WO/2023/000707A1 |
The present invention relates to the technical field of metallurgy, and relates to a vanadium-controlled Cr13 type hydroelectric stainless steel smelting method. The vanadium-controlled Cr13 type hydroelectric stainless steel smelting me...
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WO/2023/002910A1 |
This cold-rolled steel sheet has a prescribed chemical composition, and when a range from 1/8 to 3/8 of the sheet thickness in a sheet thickness direction from a surface is defined as a t/4 section, and a range of 20 µm from the surface...
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WO/2023/001835A1 |
The invention relates to a high strength cold rolled steel strip or sheet having a steel composition comprising (in wt. %) 0.15 – 0.25 C, 0.3 – 0.5 Si, 2.0 – 3.0 Mn, 0.5-1.0 Al, 0.005 – 0.5 Cr, a thermal stability θ > 0, where Î...
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WO/2023/001693A1 |
The invention relates to a method for producing a cold-rolled flat steel product having a bainitic basic structure and to a correspondingly cold-rolled flat steel product having a bainitic basic structure.
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WO/2023/001189A1 |
Disclosed in the present invention are a high-performance sintered neodymium-iron-boron magnet and a preparation method therefor. The magnet is prepared by means of diffusion heat treatment, using R1 mFenBpM2 w as a substrate and the all...
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WO/2023/001382A1 |
The invention relates to a component of a rolling bearing, in particular a rolling track element with a rolling track, on which rolling elements of a rolling bearing are provided for rolling, and/or a rolling element of a rolling bearing...
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WO/2023/003188A1 |
The present invention relates to steel suitable as a material for automobiles and, specifically, to a high-strength steel sheet having excellent hole expandability and ductility, and a manufacturing method therefor. The high-strength ste...
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WO/2023/286204A1 |
Provided is ferritic heat-resistant steel having a chemical composition that is, in terms of mass%, 0.07-0.14% C, 0.15-0.35% Si, 0.30-0.55% Mn, not more than 0.0250% P, not more than 0.0030% S, 0.15-0.35% Ni, 8.0-9.7% Cr, 0.20-0.60% Mo, ...
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WO/2023/286536A1 |
The present invention provides a thick steel sheet which has both excellent fatigue crack propagation resistance and total elongation, while exhibiting excellent elongation in the sheet thickness direction. A thick steel sheet which has ...
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WO/2023/286501A1 |
The purpose of the present invention is to provide a method for producing a hot-dip galvanized steel sheet which makes it possible to achieve high plating adhesion and a good plating appearance even when hot-dip galvanization is performe...
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WO/2023/285867A1 |
The invention deals with a process for manufacturing a steel part, comprising the following successive steps: providing a steel sheet having a composition comprising by weight percent: C: 0.05 – 0.25 %, Mn: 3.5 – 8 %, Si 0.1 - 2%, Al...
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WO/2023/286440A1 |
Provided is a continuous annealing apparatus capable of manufacturing a steel sheet having excellent hydrogen embrittlement resistance characteristics. This continuous annealing apparatus (100) has: a pay-off reel (10) for feeding a cold...
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WO/2023/286488A1 |
A continuous casting method for steel that simultaneously achieves suppression of erosion of a sliding nozzle plate of a tundish and a ladle and prevention of adhesion of inclusions to a discharge hole of the sliding nozzle plate, as wel...
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WO/2023/284393A1 |
The present invention relates to an automobile wheel steel which has high strength and toughness, and which is characterized in that the components thereof comprise, according to mass percentage: 0.1% to 0.25% C, 1.5% to 2.5% Mn, 0.8% to...
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WO/2023/286441A1 |
To provide a steel sheet dehydrogenation device, a system for manufacturing a steel sheet, and a method for manufacturing a steel sheet, whereby it is possible to manufacture a steel sheet having exceptional hydrogen embrittlement resist...
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WO/2023/286706A1 |
Provided is an Al-plated steel sheet with which it is possible to suppress hydrogen embrittlement that progresses due to hydrogen entering a steel material with oxidation of Al plating during hot stamp molding. This Al-plated steel sheet...
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WO/2023/286771A1 |
Provided is a vehicle wheel bearing device that makes it possible to stabilize the orientation of a vehicle when turning by suppressing deformation of the raceway surface of an outer member. The vehicle wheel bearing device comprises: an...
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WO/2023/284391A1 |
Disclosed is a processing method for a stainless steel bar, comprising: (1) heating a steel ingot at a heating temperature of 1200°C - 1270°C; (2) using a total compression ratio greater than 3, forging a blank to obtain a square bille...
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WO/2023/284128A1 |
A low-cost high energy welding-resistant 420 MPa-grade bridge steel and a production method therefor, relating to the technical field of steel production, the chemical components and the mass percentages thereof being as follows: C: 0.03...
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WO/2023/281808A1 |
This hot-rolled steel sheet has a specific chemical composition and a metal structure that comprises less than 3.00% by area of residual austenite; and this hot-rolled steel sheet has a tensile strength of 980 MPa or more and an Rcf valu...
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WO/2023/282072A1 |
When a non-oriented electrical steel plate is manufactured by hot rolling a slab including predetermined amounts of C, Si, Mn, Al, N and Cr, annealing the hot-rolled plate, cold rolling, and finish annealing in a continuous annealing fur...
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WO/2023/282256A1 |
[Problem] To extend the rolling fatigue life of a universal joint component such as a cross rolling component. [Solution] A production method for a universal joint component having a prior-austenite crystal grain size of 7-11 in accordan...
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WO/2023/282071A1 |
In the present invention, when a slab containing prescribed amounts of C, Si, Mn, Al, N, and Cr is hot rolled, hot-rolled-sheet annealed, cold rolled, and finishing-annealed in a continuous annealing furnace to manufacture a non-oriented...
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WO/2023/282196A1 |
Provided are: a high-strength non-oriented electromagnetic steel sheet having good fatigue characteristics suitable for a rotor core; and a non-oriented electromagnetic steel sheet having excellent magnetic characteristics suitable for a...
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WO/2023/281035A1 |
The invention relates to a coated and optionally temper-rolled dual phase steel strip with a tensile strength Rm of 580 - 720 MPa and a yield strength Rp of 310 - 430 MPa, having improved formability. The invention also relates to a meth...
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WO/2023/282477A1 |
Disclosed in the specification are ultrafine austenitic stainless steel that simultaneously meets a high strength, a high elongation, and a high yield ratio, and a manufacturing method thereof. The austenitic stainless steel according to...
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WO/2023/282194A1 |
Provided is a non-oriented electromagnetic steel sheet having favorable fatigue characteristics that are suitable for rotor cores, and having excellent magnetic characteristics that are suitable for stator cores.　The non-oriented elect...
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WO/2023/282195A1 |
Provided is a non-oriented electromagnetic steel sheet having good fatigue characteristics suitable for a rotor core, and excellent magnetic characteristics suitable for a stator core.　The non-oriented electromagnetic steel sheet has a...
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WO/2023/281939A1 |
The present invention provides a high-strength steel plate that has outstanding stretch flanging properties, bending properties, and LME resistance characteristics, and is such that components having high dimensional precision can be man...
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WO/2023/281022A1 |
The disclosure relates to a process for the manufacture of a steel component comprising a fine-grained martensite structure component. The process comprises the steps of providing a steel component having an initial steel composition; in...
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WO/2023/282197A1 |
Provided are: a high-strength non-oriented electromagnetic steel sheet having favorable fatigue characteristics suitable for a rotor core; and a non-oriented electromagnetic steel sheet having excellent magnetic characteristics suitable ...
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WO/2023/276429A1 |
Provided is a high strength steel sheet with excellent cryogenic toughness and ability to inhibit the occurrence of brittle cracks, presupposing production by an abridged process that utilizes direct quenching and tempering. This steel s...
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WO/2023/274218A1 |
The present invention relates to the field of hot rolled pipeline steel, and discloses a continuous hot-rolled high-strength pipeline steel coil having an extremely high thickness specification, the mass percentages of chemical component...
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WO/2023/272873A1 |
Disclosed are a plastic mold steel plate and a production method therefor. The production method comprises: heating a steel billet which has a soaking section having a temperature of 1210 to 1250°C; rolling into a steel plate at an init...
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WO/2023/277754A1 |
The present invention relates to a super bainite steel comprising the following elements in weight-% (wt-%) C 0.60 to 0.90; Si 1.60 to 3.00; 5 Al 0.10 to 0.80; Mn ≤ 0.90; P ≤ 0.03; S ≤ 0.03; Cr 0.40 to 1.50; 0 Ni 0.05 to 1.50; Mo 0...
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WO/2023/277169A1 |
The present invention provides a method for manufacturing an oriented electromagnetic steel sheet with which it is possible to manufacture, in a stable manner, a low-iron-loss oriented electromagnetic steel sheet with little variation in...
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WO/2023/276297A1 |
Provided is a steel material that has a prescribed chemical composition in which [X]eff is 0.0003 or greater, wherein the hardenability index Vc and the thickness t [mm] satisfy the expression Vc/(9773×t–1.8) < 1.00. [X]eff = 0.40[Pr]...
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WO/2023/276644A1 |
The present invention provides: a square steel tube in which the ductility of the corners thereof is increased, and a method for manufacturing the same; and a building structure employing said square steel tube.　A square steel tube 10 ...
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WO/2023/277290A1 |
Disclosed in one embodiment of the present invention is an aluminum-coated blank comprising: a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a connection part for connecting the firs...
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WO/2023/274281A1 |
Disclosed in the present invention are TRIP steel and a preparation method therefor, a cold-rolled steel sheet, and a hot-dip galvanized steel sheet, wherein the TRIP steel comprises the following chemical components, in percentages by m...
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WO/2023/275495A1 |
The invention relates to a metal powder made of an austenitic stainless steel, to a metal part made from such a powder and to methods for obtaining same.
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WO/2023/276516A1 |
Provided are a high-strength steel sheet and a method for producing the same. A high-strength steel material according to the present invention has a particular component composition, wherein: the metal structure of the high-strength ste...
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