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公开(公告)号：US20240352565A1
公开(公告)日：2024-10-24
申请号：US18579354
申请日：2021-08-27
IPC分类号： C22C38/60 , B21D28/26 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/50 , C22C38/54 , C22C38/58
CPC分类号： C22C38/60 , B21D28/26 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/021 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/44 , C22C38/50 , C22C38/54 , C22C38/58
摘要： This outer plate component for an automobile includes a steel sheet, and a rolling direction of the steel sheet extends along a vehicle body left-right direction in plan view.
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2.发明公开公开(公告)号：US20240352551A1
公开(公告)日：2024-10-24
申请号：US18684593
申请日：2022-08-25
申请人： POSCO CO., LTD
发明人： Young-Roc IM , Sang-Ho UHM , Young-Ha KIM
IPC分类号： C21D9/46 , C21D1/18 , C21D1/84 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38
CPC分类号： C21D9/46 , C21D1/18 , C21D1/84 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008
摘要： Provided is a cold-rolled steel sheet including: by weight %, C: 0.10 to 0.16%, Si: 0.3 to 0.8%, Al: 0.01 to 0.5%, Mn: 2.0 to 3.0%, Cr: 0.001 to 0.5%, Mo: 0.001 to 0.5%, B: 0.0001 to 0.001%, Nb: 0.001 to 0.05%, Ti: 0.001 to 0.05%, P: 0.04% or less (excluding 0%), S: 0.01% or less (excluding 0%), N: 0.01% or less (excluding 0%), a remainder of Fe, and other unavoidable impurities, as a microstructure, by area %, ferrite: 10% or less (excluding 0%), retained austenite: more than 1% to 5% or less, martensite: 25% or more but less than 50%, and bainite: 35% or more but less than 70%. An average size of martensite-austenite (MA) in the bainite is 0.35 to 0.55 μm.
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公开(公告)号：US12123071B2
公开(公告)日：2024-10-22
申请号：US17760448
申请日：2021-02-11
发明人： Radhakanta Rana
IPC分类号： B32B15/01 , C21D6/00 , C21D8/02 , C21D9/52 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12
CPC分类号： C21D9/52 , B32B15/012 , B32B15/013 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C21D2211/008
摘要： A hot-rolled (HR) strip steel with high flangeability at ultra-high strength levels with a high total elongation, bendability and toughness values, and a method of manufacturing the hot-rolled steel and use thereof.
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公开(公告)号：US12123070B2
公开(公告)日：2024-10-22
申请号：US17299308
申请日：2019-11-27
IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/60
CPC分类号： C21D9/46 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/60 , C21D2211/005
摘要： A ferritic stainless steel sheet has a predetermined chemical composition and thickness, and has an area ratio of crystal grains of 45 μm or more in grain size of 20% or less.
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公开(公告)号：US20240344186A1
公开(公告)日：2024-10-17
申请号：US18294342
申请日：2022-03-30
发明人： Hiromu IZUMIDA , Tetsuya NAKAJIMA , Hiroto KONTANI
CPC分类号： C22C38/34 , C21D1/18 , C21D1/74 , C21D6/002 , C21D6/005 , C21D6/008 , C21D9/525 , C22C38/02 , C22C38/04 , C22C38/24 , C21D2211/008
摘要： A steel wire for springs includes a main steel body and having a line shape, and an oxidized layer covering an outer peripheral surface of the main body. The steel constituting the main body contains between 0.6 and 0.7 mass % C, between 1.7 and 2.5 mass % Si, between 0.2 and 1 mass % Mn, between 0.6 and 2 mass % Cr, and between 0.08 and 0.25 mass % V, with the balance consisting of Fe and unavoidable impurities. The steel constituting the main body has a tempered martensitic structure. The oxidized layer includes a high Si concentration layer having a maximum concentration of Si of not less than 2.5 times and not more than 5.5 times that of the main body. The main body includes an intergranular oxidized layer arranged to constitute the outer peripheral surface and having a thickness of not less than 0.5 μm and not more than 2.5 μm.
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公开(公告)号：US20240337000A1
公开(公告)日：2024-10-10
申请号：US18580976
申请日：2022-07-14
发明人： Bernd Linke , Michael Belde
CPC分类号： C22C38/04 , C21D6/002 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0273 , C21D9/46 , C22C38/001 , C22C38/02 , C22C38/18 , C21D2211/001 , C21D2211/002 , C21D2211/003 , C21D2211/005 , C21D2211/008 , C21D2211/009
摘要： A process for producing a cold-rolled flat steel product having a bainitic base microstructure and a correspondingly cold-rolled flat steel product having a bainitic base microstructure.
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公开(公告)号：US20240336989A1
公开(公告)日：2024-10-10
申请号：US18580943
申请日：2022-06-23
申请人： POSCO CO., LTD
发明人： Sangseok Kim , Minam Park , Jaepil Lee , Ilchan Jung
IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/58
CPC分类号： C21D9/46 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/58 , C21D2211/001
摘要： Disclosed is an austenitic stainless steel including, in percent by weight (wt %), 0.005 to 0.03% of C, 0.1 to 1% of Si, 0.1 to 2% of Mn, 0.01 to 0.4 of Cu, 0.01 to 0.2 of Mo, 6 to 9% of Ni, 16 to 19% of Cr, 0.01 to 0.2% of N, and the balance of Fe and inevitable impurities, wherein an austenitic stability parameter (ASP) value calculated by 551−462 (C+N)−9.2Si−8.1Mn−13.7Cr−29 (Ni+Cu)−18.5Mo is from 30 to 60, a [100*N]/[Ni+Cu] value is 1.4 or more, an average grain size is less than 5 μm, and a fraction (%) of grains with a grain size of 5 μm or more is less than 10%.
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公开(公告)号：US20240327944A1
公开(公告)日：2024-10-03
申请号：US18411282
申请日：2024-01-12
IPC分类号： C21D9/52 , B21B1/26 , B22D11/00 , B22D11/14 , C21D1/18 , C21D6/00 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/06
CPC分类号： C21D9/52 , B21B1/26 , B22D11/001 , B22D11/141 , C21D1/18 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0221 , C21D8/0247 , C22C38/02 , C22C38/04 , C22C38/06 , C21D2211/001 , C21D2211/002 , C21D2211/005
摘要： A process for production of a TRIP steel strip that includes
supplying a finished strip to a first cooling group of a cooling sector to force-cool the core of the finished strip to a second exit temperature (TA2) in the range 620° C. to 700° C., whereby, upon exiting the first cooling group, the core has a predominantly austenitic microstructure, transporting the finished strip to a third cooling group establishing, during the transport, a second cooling rate of the core of the finished strip in the range −25 K/s to 20 K/s to convert a first portion of the austenitic microstructure into a ferritic microstructure, force-cooling the core of the finished strip in the third cooling group to a third exit temperature (TA3) which is not more than the bainite starting temperature (BS) to at least partially convert a second portion of the austenite into a bainitic microstructure.-
公开(公告)号：US12104218B2
公开(公告)日：2024-10-01
申请号：US18027201
申请日：2021-09-17
发明人： Jennifer Schulz , Maria Köyer , Manuela Ruthenberg
IPC分类号： C21D9/46 , C21D1/18 , C21D6/00 , C21D8/02 , C22C21/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/22 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
CPC分类号： C21D9/46 , C21D1/18 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C22C21/02 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/22 , C22C38/28 , C22C38/32 , C23C2/12 , C23C2/26 , C23C2/28 , C23C2/40
摘要： A sheet metal component made of a hot-formed flat steel product including a steel substrate consisting of, in mass. %, C: 0.1-0.4%, Mn: 0.5-3.0%, Si: 0.05-0.5%, Cr: 0.005-1.0%, B: 0.00050.01% and optionally one or more of V, Ti, Nb, Al, Ni, Cu, Mo, and W, where the contents of the respective optionally present alloy element are V: 0.001-0.2%, Ti: 0.01-0.1%, Nb: 0.001-0.1%, Al: 0.01-0.2%, Ni: 0.01-0.4%, Cu: 0.01-0.8%, Mn: 0.002-1.0%, W: 0.001-1.0%, and the remainder iron and unavoidable impurities, wherein the unavoidable impurities include contents of less than 0.1% P, less than 0.05% S, and less than 0.01% N, and an Al corrosion protection layer applied to the steel substrate, wherein the component is optionally hardened. An adhesive section having an SDR value of 3-30%, determined according to ISO 25178, is provided on the free outer face of the corrosion protection coating for adhering the sheet metal component to another component.
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公开(公告)号：US20240321489A1
公开(公告)日：2024-09-26
申请号：US18574347
申请日：2022-06-23
发明人： Zhaopu XU , Dongdong LI , Guodong SU , Weiwei BU
IPC分类号： H01F1/057 , C21D1/18 , C21D6/00 , C21D9/46 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F41/02 , H02K1/02
CPC分类号： H01F1/0577 , C21D1/18 , C21D6/007 , C21D9/46 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F41/0253 , H02K1/02 , C22C2202/02
摘要： An R—Fe—B sintered magnet, and a preparation method therefor and use thereof are provided. The surface of the R—Fe—B sintered magnet has an oxide adhesive layer, and is obtained by means of the heat preservation and heat treatment of an R—Fe—B magnet having a composite diffusion layer on the surface thereof. The heat treatment comprises alternately carrying out a low-temperature heat treatment at 750° C.-830° C. and a high-temperature heat treatment at 830° C.-970° C., and a neodymium iron boron green body having the oxide adhesive layer on the surface thereof is obtained. The grain boundary diffusion of the R—Fe—B magnet is optimized, and the coercive force distribution of the magnet is improved. The R—Fe—B sintered magnet can be used in the field of automobiles, wind power generation, household electric motors, medical apparatuses or mobile communication appliances.
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