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公开(公告)号：US12129534B2
公开(公告)日：2024-10-29
申请号：US17801134
申请日：2021-05-07
发明人： Yuri Toda , Daisuke Maeda , Shingo Fujinaka
IPC分类号： C22C38/02 , C21D6/00 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18
CPC分类号： C22C38/18 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C21D2211/002 , C21D2211/005
摘要： This hot-stamping formed body has a predetermined chemical composition and has a metallographic structure consisting of, by area ratio, a total of 10% to 30% of ferrite and granular bainite and a remainder in microstructure consisting of one or more of martensite, bainite, and tempered martensite, and, in textures of a surface layer region and an inside region, ratios between a pole density of an orientation group consisting of {001} to {001} and a pole density of an orientation group consisting of {111} to {111} are controlled.
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公开(公告)号：US12123068B2
公开(公告)日：2024-10-22
申请号：US17258968
申请日：2018-07-13
IPC分类号： C21D9/46 , C21D6/00 , C21D8/12 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/18 , H01F1/14
CPC分类号： C21D9/46 , C21D6/008 , C21D8/1283 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/16 , C22C38/18 , H01F1/14 , C21D2201/05 , C22C2202/02
摘要： A grain oriented electrical steel sheet includes: by mass %, 0.010% or less of C; 2.50 to 4.00% of Si; 0.010% or less of acid soluble Al; 0.012% or less of N; 1.00% or less of Mn; 0.020% or less of S; and a balance comprising Fe and impurities, and has a tension-insulation coating at steel sheet surface and a SiO2 intermediate oxide film layer with an average thickness of 1.0 nm to 1.0 μm at an interface between the tension-insulation coating and the steel sheet surface. In the grain oriented electrical steel, when a surface of the intermediate oxide film layer is analyzed by an infrared reflection spectroscopy, a peak intensity IA at 1250 cm−1 and a peak intensity IB at 1200 cm−1 satisfy IB/IA≥0.010.
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公开(公告)号：US20240344164A1
公开(公告)日：2024-10-17
申请号：US18646241
申请日：2024-04-25
申请人： POSCO CO., LTD
发明人： Ki-Cheol Kang , Chung-Hwan Lee , Yong-Joo Kim , Kang-Min Lee , Kyoo-Young Lee
IPC分类号： C21D9/46 , B32B15/01 , B32B15/04 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/00 , C21D8/02 , C21D9/56 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： C21D9/46 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0257 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C21D9/562 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/022 , C23C2/0224 , C23C2/024 , C23C2/06 , C23C2/28 , C23C2/29 , C23C2/40 , C23C28/025 , C23C28/3225 , C23C28/345 , C23C30/00 , C23C30/005 , B32B2307/732 , Y10T428/12583 , Y10T428/1259 , Y10T428/12597 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12667 , Y10T428/12799 , Y10T428/12958 , Y10T428/12965 , Y10T428/12972 , Y10T428/12993 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967 , Y10T428/24983 , Y10T428/26 , Y10T428/27 , Y10T428/273
摘要： The present disclosure relates to a high-strength hot-dip galvanized steel sheet having excellent surface quality and electrical resistance spot weldability, and a method for manufacturing the same. A galvanized steel sheet according to an aspect of the present disclosure is a galvanized steel sheet including a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, wherein a ratio (a/b) of a hardness of a surface layer portion (a) to a hardness of an internal portion (b) of the base steel sheet may be less than 0.95.
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公开(公告)号：US12065744B2
公开(公告)日：2024-08-20
申请号：US17512334
申请日：2021-10-27
发明人： Evan Mah , Vasily Simanzhenkov , Leslie Benum , Hany Farag , Bolaji Olayiwola
IPC分类号： C23C8/16 , B01J8/24 , B01J19/02 , C10G9/20 , C10G11/18 , C10G35/00 , C22C30/00 , C22C38/00 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C23C4/11 , C23C8/02 , C23C8/10 , C23C8/18 , C23C8/60 , C23C16/40 , C23C30/00
CPC分类号： C23C8/16 , B01J8/24 , B01J19/02 , C10G9/203 , C10G11/18 , C10G35/00 , C22C30/00 , C22C38/00 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C23C4/11 , C23C8/02 , C23C8/10 , C23C8/18 , C23C8/60 , C23C16/405 , C23C16/406 , C23C30/00 , B01J2219/0236 , C23C16/408
摘要： An anti-coking surface having a thickness up to 15 microns comprising from 15 to 50 wt. % of MnCr2O4 (for example manganochromite); from 15 to 25 wt. % of Cr0.23Mn0.08Ni0.69 (for example chromium manganese nickel); from 10 to 30 wt. % of Cr1.3Fe0.7O3 (for example chromium iron oxide); from 12 to 20 wt. % of Cr2O3 (for example eskolaite); from 4 to 20 wt. % of CuFe5O8 (for example copper iron oxide); and less than 5 wt. % of one or more compounds chosen from FeO(OH), CrO(OH), CrMn, Si and SiO2 (either as silicon oxide or quartz) and less than 0.5 wt. % of aluminum in any form provided that the sum of the components is 100 wt. % is provided on steel.
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公开(公告)号：US20240209481A1
公开(公告)日：2024-06-27
申请号：US17802486
申请日：2002-02-03
CPC分类号： C22C38/02 , C21D8/065 , C21D9/02 , C22C38/04 , C22C38/18 , C21D2211/005 , C21D2211/009
摘要： A steel wire is composed of a steel containing: not less than 0.5 mass % and not more than 0.7 mass % carbon, not less than 1 mass % and not more than 2.5 mass % silicon, not less than 0.3 mass % and not more than 1 mass % manganese, and not less than 0.5 mass % and not more than 2 mass % chromium, with the balance being iron and unavoidable impurities. The steel wire has a wire diameter of not less than 0.5 mm and not more than 2 mm, and a tensile strength of not less than 2000 N/mm2 and not more than 2700 N/mm2. The steel has a pearlite structure. A value obtained by dividing a sum of 5.8885×10−3 and a lattice strain S of the steel by the tensile strength T, (S+5.8885×10−3)/T, the tensile strength T being in N/mm2, is not less than 4.8×10−6.
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公开(公告)号：US12000028B2
公开(公告)日：2024-06-04
申请号：US15751020
申请日：2016-08-17
发明人： Taizo Makino , Takayuki Kamimura , Yuichiro Yamamoto , Yutaka Wakasu , Kiyonobu Sugae , Yukiteru Takeshita , Naomitsu Mizui
IPC分类号： C22C38/50 , B61F5/50 , C21D1/28 , C21D6/00 , C21D8/06 , C21D9/08 , C21D9/28 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/46 , F16C3/02
CPC分类号： C22C38/50 , B61F5/50 , C21D1/28 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/065 , C21D9/08 , C21D9/28 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/46 , F16C3/02 , F16C2204/62 , F16C2326/10
摘要： Provided is a rail vehicle axle having an excellent fatigue limit and notch factor. A rail vehicle axle according to the present embodiment has a chemical composition consisting of, in mass %, C: 0.20 to 0.35%, Si: 0.20 to 0.65%, Mn: 0.40 to 1.20%, P: 0.020% or less, S: 0.020% or less, Sn: 0.07 to 0.40%, N: 0.0200% or less, Cu: 0 to 0.30%, Ni: 0 to 0.30%, Cr: 0 to 0.30%, Mo: 0 to 0.08%, Al: 0 to 0.100%, V: 0 to 0.060%, and Ti: 0 to 0.020%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2):
0.58≤C+Si/8+Mn/5+Cu/10+Cr/4+V≤0.67 (1)
Si+0.9Cr≥0.50 (2)
where, each element symbol in Formulae (1) and (2) is substituted by the content (mass %) of a corresponding element.-
公开(公告)号：US12000008B2
公开(公告)日：2024-06-04
申请号：US17787174
申请日：2020-12-18
申请人： POSCO
发明人： Ki-Cheol Kang , Chung-Hwan Lee , Yong-Joo Kim , Kang-Min Lee , Kyoo-Young Lee
IPC分类号： B32B15/01 , B32B15/04 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/00 , C21D8/02 , C21D9/46 , C21D9/56 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： C21D9/46 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/19 , C21D1/25 , C21D1/76 , C21D1/84 , C21D3/04 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0257 , C21D8/0263 , C21D8/0273 , C21D8/0278 , C21D9/562 , C22C38/001 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58 , C23C2/02 , C23C2/022 , C23C2/0224 , C23C2/024 , C23C2/06 , C23C2/28 , C23C2/29 , C23C2/40 , C23C28/025 , C23C28/3225 , C23C28/345 , C23C30/00 , C23C30/005 , B32B2307/732 , Y10T428/12583 , Y10T428/1259 , Y10T428/12597 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12667 , Y10T428/12799 , Y10T428/12958 , Y10T428/12965 , Y10T428/12972 , Y10T428/12993 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967 , Y10T428/24983 , Y10T428/26 , Y10T428/27 , Y10T428/273
摘要： The present disclosure relates to a high-strength hot-dip galvanized steel sheet having excellent surface quality and electrical resistance spot weldability, and a method for manufacturing the same. A galvanized steel sheet according to an aspect of the present disclosure is a galvanized steel sheet including a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, wherein a ratio (a/b) of a hardness of a surface layer portion (a) to a hardness of an internal portion (b) of the base steel sheet may be less than 0.95.
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公开(公告)号：US11993823B2
公开(公告)日：2024-05-28
申请号：US16544127
申请日：2019-08-19
IPC分类号： C21D9/46 , B32B15/01 , B32B15/04 , B32B15/18 , C21D1/20 , C21D1/22 , C21D1/25 , C21D1/26 , C21D1/78 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/40 , C22C38/54 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/02 , C25D3/22 , C25D5/36
CPC分类号： C21D9/46 , B32B15/013 , B32B15/043 , B32B15/18 , C21D1/20 , C21D1/22 , C21D1/25 , C21D1/26 , C21D1/78 , C21D8/0247 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/40 , C22C38/54 , C23C2/0224 , C23C2/06 , C23C2/28 , C23C2/40 , C23C28/021 , C23C28/025 , C25D3/22 , C25D5/36 , C21D8/0236 , C21D8/0278 , C21D2211/001 , C21D2211/005 , C21D2211/008
摘要： The present invention provides steel sheet products having controlled compositions that are subjected to two-step annealing processes to produce sheet products having desirable microstructures and favorable mechanical properties such as high strength and ultra-high formability. The steel sheet products may be cold rolled or hot rolled. Steels processed in accordance with the present invention exhibit favorable combined ultimate tensile strength and total elongation (UTS•TE) properties, and may fall into the category of Generation 3 advanced high strength steels, desirable in various industries including automobile manufacturers.
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公开(公告)号：US11958139B2
公开(公告)日：2024-04-16
申请号：US16959475
申请日：2019-01-16
申请人： Kobe Steel, Ltd.
发明人： Yoshimasa Muranishi
IPC分类号： B23K35/02 , B23K35/30 , B23K35/368 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32
CPC分类号： B23K35/0266 , B23K35/30 , B23K35/3086 , B23K35/3093 , B23K35/368 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32 , C22C38/18
摘要： A flux-cored wire for gas shielded arc welding may contain, based on total mass of the wire: Fe: 78 mass % or more; TiO2: 4 mass % to 13 mass %; Mn: 1.0 mass % to 2.4 mass %; Cr: 1.0 mass % to 3.0 mass %; Mo: 0.2 mass % to 1.2 mass %; Si: 0.1 mass % to 0.8 mass %; Mg: 0.1 mass % to 1.0 mass %; fluoride (F conversion value): 0.05 mass % to 0.25 mass %; C: 0.01 mass % to 0.10 mass %; V: 0.003 mass % to 0.020 mass %; Nb: 0.003 mass % to 0.020 mass %; and B: less than 100 ppm (including 0 ppm). The contents of Mn, C, and V based on total mass of the wire may satisfy a relationship of 28×Mn/(390×C+2370×V)≥0.82.
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10.发明公开公开(公告)号：US20240116141A1
公开(公告)日：2024-04-11
申请号：US18391841
申请日：2023-12-21
申请人： ArcelorMittal
发明人： Laurent Cretteur , Qingdong Yin , Francis Schmit , Wolfram Ehling
IPC分类号： B23K31/02 , B23K26/32 , B23K26/60 , B23K35/02 , B23K35/30 , B23K35/38 , B32B15/01 , C21D1/673 , C21D9/48 , C21D9/50 , C22C38/04 , C22C38/18 , C23C28/02
CPC分类号： B23K31/02 , B23K26/32 , B23K26/60 , B23K35/0261 , B23K35/3053 , B23K35/3073 , B23K35/383 , B32B15/012 , C21D1/673 , C21D9/48 , C21D9/50 , C21D9/505 , C22C38/04 , C22C38/18 , C23C28/021 , C23C28/023 , B23K2101/34
摘要： A welded steel part with a very high mechanical strength is provided. The welded steel part is obtained by heating followed by hot forming, then cooling of at least one welded blank obtained by butt welding of at least one first and one second sheet. The at least one first and second sheets including, at least in part, a steel substrate and a pre-coating which includes an intermetallic alloy layer in contact with the steel substrate, topped by a metal alloy layer of aluminum or aluminum-based alloy. A method for the fabrication of a welded steel part and the fabrication of structural or safety parts for automotive vehicles are also provided.
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