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WO/2023/194450A1 |
The invention relates to a method for producing hardened steel components, wherein a sheet metal blank is cut out from a galvanized or alloy-galvanized strip made of a hardenable steel alloy and the sheet metal blank is then cold-formed ...
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WO/2023/195201A1 |
This quenching method is used for quenching a to-be-quenched object including a race provided with an object through-hole. The quenching method comprises: a step for preparing a quenching jig that is a rod; a step for suspending a plural...
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WO/2023/195226A1 |
The present invention provides: a soft magnetic iron alloy plate that makes it possible to exhibit higher Bs and lower Pi than an electromagnetic pure iron plate, and that enables a greater cost reduction than permendur; a production met...
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WO/2023/189174A1 |
Provided is a hot-stamp-formed article which has a chemical composition formed from, by mass%, 0.40 to 0.70% C, 0.100% or less P, 0.0100% or less S, 0.0200% or less N, 0.0200% or less O, 0.0010 to 0.500% Al, 0.0010 to 0.100% Nb, 0.010 to...
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WO/2023/184782A1 |
Disclosed in the present invention is a manufacturing method for a hot forging-formed, composite-quenched and structure-refined high-strength bolt. The manufacturing method comprises hot forging forming and complete quenching, critical z...
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WO/2023/191090A1 |
[Problem] To make it easier to prvent adhesion of foreign matter to the surface of a steel sheet transportation roll. [Solution] A steel sheet transportation roll according to the present invention has a thermal spray coating located on ...
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WO/2023/189175A1 |
The present invention provides a steel sheet for hot stamping, the steel sheet having a specific chemical composition, while having a metal structure that contains, in area ratios, 10% or more of ferrite and 10% or more of pearlite, with...
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WO/2023/189183A1 |
Provided is a hot-stamp-formed article having a specific chemical composition, the hot-stamp-formed article containing, by area ratio, 90% or more in total of at least one of martensite, bainite, and tempered martensite, and having a mic...
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WO/2023/192852A1 |
A hypereutectic chromium white iron alloy comprises, in weight percent based on the total weight of the alloy, from 1.5 to 2.85 carbon, from 0.01 to 1.2 nitrogen, from 0.1 to 1.4 boron, from 3 to 34 chromium, from 0.1 to 7.5 Ni, and from...
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WO/2023/189612A1 |
This machine component (10) has surfaces, and is formed from steel that has undergone quenching and tempering. The machine component is provided with a nitrided layer (11) formed on the surfaces (10a, 10b, 10c, 10d). The steel contains 0...
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WO/2023/188792A1 |
Provided is a hot press member comprising excellent spot welding properties and cut-part corrosion resistance. The hot press member comprising: a steel plate; a coating layer disposed to at least one surface of the steel plate; and an ox...
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WO/2023/190867A1 |
This steel member has a predetermined chemical composition. In the steel member, when a position at a depth of 1/4 of the thickness in the thickness direction from the surface is defined as a 1/4 depth position, the maximum B content in ...
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WO/2023/190205A1 |
This vacuum carburizing furnace comprises: a heating chamber in which vacuum carburizing of a workpiece charged into the furnace is performed; and a workpiece charging port that is provided on the bottom of the heating chamber.
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WO/2023/180543A1 |
The invention relates to a method for heating a sheet-steel blank or a pre-shaped sheet-steel component having a zinc coating or a zinc-alloy coating, in which method: the sheet-steel component or the sheet-steel blank is guided through ...
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WO/2023/182333A1 |
The purpose of the present invention is to provide a gear component in which the surface layer of the dedendum has a high hardness and the bending fatigue strength is excellent. The gear component according to the present invention is ...
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WO/2023/180082A1 |
Disclosed is an inductor (1) for heating a vehicle wheel (2), which has a plurality of windings (1a) provided to heat an inner region of a rim (2a) of the vehicle wheel (2) and at least one winding (1d) provided for heating a rim flange ...
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WO/2023/181505A1 |
This quenching-attitude-setting program causes a computer to perform setting of the quenching attitude of an object to be quenched. The quenching-attitude-setting program causes a computer to perform: a first process for dividing a virtu...
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WO/2023/180999A1 |
The invention relates to a method for manufacturing a rolling bearing (100) for a medical guide device with roller bodies, comprising components, at least one component (20; 6, 2, 4, 5, 5') being made of titanium or of titanium alloy, th...
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WO/2023/173153A1 |
The invention relates to a device (1) for tempering an object (2) comprising a chamber (5) for receiving the object (2), wherein the chamber (5) is surrounded by a chamber casing (7), a base element (4) and a cover element (8), a heating...
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WO/2023/176521A1 |
This quenching tool is used for quenching an object to be quenched including a disk-shaped race having a race through-hole. The quenching tool comprises a supporting mesh including a first supporting portion that contacts the object to b...
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WO/2023/168884A1 |
A method for preparing a spiral heat exchange tube of a steam generator of a high temperature gas-cooled reactor, comprising steps of: perforation and annealing of a pierced billet; pickling and inspection of the pierced billet; multi-pa...
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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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