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WO/2023/171492A1 |
This hot-stamp-formed article has a specific chemical composition, with the metal structure being, by area%: at least 60% in total of fresh martensite and tempered martensite; 2 to 30% retained austenite; 38% or less of bainite; and 2% o...
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WO/2023/170245A1 |
The invention relates to a high strength steel sheet with excellent hole expandability having a hole expansion ratio of 40% or more, and to a method of producing the same.
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WO/2023/165611A1 |
Disclosed in the present invention are a steel for high-toughness corrosion-resistant Christmas tree valve bodies smelted at a high scrap ratio, and a heat treatment method and a production method therefor. The steel for Christmas tree v...
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WO/2023/165614A1 |
Long-service-life high-toughness corrosion-resistant steel for a subsea Christmas tree valve and a heat treatment method and production method for the long-service-life high-toughness corrosion-resistant steel for the subsea Christmas tr...
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WO/2023/167318A1 |
Provided is a steel material that can reduce the hydrogen embrittlement susceptibility of bolts. This steel material contains, in mass%, 0.30-0.50% of C, 0.01-0.30% of Si, 0.10-1.50% of Mn, 0.030% or less of P, 0.030% or less of S, 0.01-...
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WO/2023/165068A1 |
The present invention relates to a carburized bearing steel for a large-load rolling mill bearing and a production method therefor. The steel comprises the following chemical components (in percentages by mass): C: 0.17-0.23, Si: 0.15-0....
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WO/2023/167319A1 |
Provided is a steel material that can reduce the hydrogen embrittlement susceptibility of bolts. This steel material contains, in mass%, 0.30-0.50% of C, 0.01-0.30% of Si, 0.10-1.50% of Mn, 0.030% or less of P, 0.030% or less of S, more ...
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WO/2023/165645A1 |
The invention relates to a method for producing rolling bearing components with a high degree of toughness, having the steps of: providing at least one rolling bearing component made of a steel material, said steel material having a high...
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WO/2023/167386A1 |
The present invention provides a method for manufacturing railway vehicle wheel-mounted brake discs, which are mounted at both sides of a railway vehicle wheel, the method comprising: a forging step of molding, by ring rolling, a steel m...
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WO/2023/162614A1 |
Provided is a hot stamped compact that has a prescribed chemical composition, and has a metal structure containing at least 90 vol% martensite, wherein the average grain diameter of the prior austenite grains is 3.0 µm or less, the stan...
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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/2023/155447A1 |
A high wear resistance steel for coal mining and a production method therefor. Chemical components and mass percentages are as follows: C: 0.15-0.30 %, Si: 0.20-0.50 %, Mn: 0.90-1.40 %, P ≤ 0.015 %, S ≤ 0.0020 %, Nb: ≤ 0.030 %, V: ...
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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/2023/151301A1 |
The present invention relates to the technical field of steel production. Disclosed are a wear-resistant steel and a production method therefor. The wear-resistant steel comprises the following chemical components in percentage by mass: ...
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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/2023/149085A1 |
Provided is energy-efficient, low-cost technology capable of supplying temperature-accurate hot air. A device comprising: a heat pump that preheats gas at a temperature lower than the preset temperature required for drying steel or a ste...
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WO/2023/143290A1 |
Disclosed is a pipeline. The pipeline has, in the thickness direction, a corrosion-resistant layer and a base layer. The corrosion-resistant layer is at least located on an inner wall of the pipeline, and the corrosion-resistant layer, i...
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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/2023/137842A1 |
A die steel having a high thermal diffusion coefficient, and a preparation method therefor. The die steel is prepared from the following components, in percentage by mass: C: 0.30-0.40%, Si: 0.05-0.10%, Mo: 2.50-3.40%, Nb: 0.01-0.05%, Co...
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WO/2023/138595A1 |
The present invention discloses a pipeline, which has a corrosion-resistant layer and a base layer in the thickness direction, wherein the corrosion-resistant layer is at least located on the inner wall of the pipeline; and the corrosion...
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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/2023/134616A1 |
Disclosed is a pipeline, having a corrosion resistant layer and a base layer in a thickness direction. The corrosion resistant layer is at least located on the inner wall of the pipeline. In addition to Fe and inevitable impurities, the ...
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WO/2023/134728A1 |
Disclosed in the present invention is copper-containing oriented silicon steel with good magnetic properties, the copper-containing oriented silicon steel comprising, in addition to not less than 90 wt% of Fe and inevitable impurities, t...
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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/2023/131224A1 |
Disclosed in the present invention is a non-oriented electrical steel plate with good magnetic performance. In addition to Fe and inevitable impurities, the non-oriented electrical steel plate further contains the following chemical elem...
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WO/2023/132141A1 |
The present invention provides: a soft magnetic iron alloy plate which not only is capable of suppressing an excessive increase in Pi while exhibiting a higher Bs than an electromagnetic pure iron plate, but also can be produced at a low...
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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/2023/132349A1 |
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/2023/131913A1 |
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/2023/126507A1 |
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/2023/129793A1 |
A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. The non-pneumatic tire further in...
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WO/2023/129949A1 |
A process for heat treating a metal part wherein the metal part is heated to a through heat temperature which is between about the austenite start temperature and 100 °F below the melt point. The first surface layer of the metal part is...
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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/2023/126506A1 |
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/2023/121187A1 |
The present invention relates to a steel sheet for use in automobiles, etc., and to a steel sheet that has high strength and high formability and is superb in terms of spot weldability, and a manufacturing method therefor.
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WO/2023/117135A1 |
The present invention relates to a method for manufacturing a die (20; 21) for press forming plate material (10) between an upper die (20) and a lower die (21) of a pressforming die pair (20, 21). The die (20; 21) is provided with a work...
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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/2023/120348A1 |
According to the present invention, a steel stock material having a specific chemical component composition is heated to a rolling temperature of 1150°C to 1350°C and is subsequently rolled, thereby producing a rolled material; and aft...
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WO/2023/121183A1 |
A hot rolled steel sheet having excellent cold bendability after heating and quenching-tempering heat treatment, a steel pipe, a member and manufacturing methods therefor are provided. The present invention relates to: a hot rolled steel...
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WO/2023/118298A1 |
The invention relates to a method for heating a vehicle wheel (2), in particular as a preparation for a subsequent shaping method, in which at least a part of the vehicle wheel (2) is heated by means of inductive heating using an inducto...
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WO/2023/121027A1 |
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 low-temperature impact toughness, and a method for...
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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/2023/111771A1 |
The present invention relates to a method for evaluating the hydrogen content in a steel sheet while being submitted to an annealing process, comprising the following steps: estimating the microstructure of the steel sheet according to t...
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WO/2023/114498A1 |
A method for fabricating an article includes forming a billet consisting essentially of a stainless steel composition of manganese 2.00 wt.% – 24.00 wt.% chromium 19.00 wt.% – 30 wt.% molybdenum 0.50 wt.% – 4.0 wt.% nitrogen 0.25 w...
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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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