公开(公告)号：US11053563B2

公开(公告)日：2021-07-06

申请号：US15559048

申请日：2015-09-16

申请人： BAOSHAN IRON & STEEL CO., LTD.

发明人： Mingzhuo Bai ,  Lei Zheng ,  Leilei Sun ,  Guodong Xu ,  Kougen Wu ,  Haisheng Xu

IPC分类号： C22C38/50 ,  C22C38/48 ,  C22C38/06 ,  C22C38/58 ,  C21D9/08 ,  C21D8/10 ,  C21D6/00 ,  C21D1/18 ,  C22C38/14 ,  B21B1/02 ,  B21B1/04 ,  B21B1/46 ,  B21B45/02 ,  C22C38/00 ,  C22C38/02

摘要： A X80 pipeline steel with good strain-aging performance comprises (wt. %): C: 0.02-0.05%; Mn: 1.30-1.70%; Ni: 0.35-0.60%: Ti: 0.005-0.020%; Nb: 0.06-0.09%; Si: 0.10-0.30%; Al: 0.01-0.04%; N≤0.008%; P≤0.012%; S≤0.006%; Ca: 0.001-0.003%, and balance iron and unavoidable impurities.

公开(公告)号：US11045896B2

公开(公告)日：2021-06-29

申请号：US16403731

申请日：2019-05-06

申请人： JFE STEEL CORPORATION

发明人： Shinsaku Kokubo ,  Kenichi Iwazaki ,  Hiromichi Hori

IPC分类号： B23K11/36 ,  B21C37/08 ,  B21C37/30 ,  F16L9/16 ,  B21C1/24 ,  B23K11/087 ,  B23K31/10 ,  F16L9/17 ,  C23C22/12 ,  C21D9/08

摘要： A method for manufacturing an electric resistance welded steel pipe having an identifiable seam portion. The method includes electric resistance welding a steel pipe, cutting an inner surface bead and an outer surface bead of the steel pipe in such a manner so as to cut: (i) a whole the outer surface bead and a part of the inner surface bead to leave an uncut portion in the inner surface bead, or (ii) a whole of the inner surface bead and a part of the outer surface bead to leave an uncut portion in the outer surface bead, coating the steel pipe with zinc phosphate, and cold drawing the steel pipe using a plug and a die to make the seam portion of the steel pipe identifiable.

公开(公告)号：US20210180148A1

公开(公告)日：2021-06-17

申请号：US17178587

申请日：2021-02-18

申请人： Hyundai Motor Company ,  Kia Motors Corporation

发明人： Alex Khutorsky ,  Jonghyun Kim

IPC分类号： C21D9/08 ,  B60J5/04 ,  C21D1/42 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32

摘要： A steel composition, a reinforcement part of a vehicle using the steel composition and a method of manufacturing the reinforcement part using the steel composition are provided. In particular, the steel composition includes increased content of carbon components and the steel composition is processed by rapid heating and immediate quenching.

公开(公告)号：US11021768B2

公开(公告)日：2021-06-01

申请号：US15825808

申请日：2017-11-29

申请人： L & W Engineering

发明人： Dean Richardson ,  Jason Bigelow

IPC分类号： C21D9/08 ,  B21D22/02 ,  C21D1/673 ,  B21D22/20

摘要： A method of producing a structure support may include: providing a hollow workpiece composed of a steel material; heating the hollow workpiece to an austenitizing temperature range to provide the steel material with an austenitic microstructure; forming the hollow workpiece into a predefined complex geometry while the hollow workpiece is still in the austenitizing temperature range; and cooling the hollow workpiece with the predefined complex geometry to transform the austenitic microstructure into a martensitic microstructure.

公开(公告)号：US11015231B2

公开(公告)日：2021-05-25

申请号：US16699113

申请日：2019-11-29

申请人： USUI CO., LTD.

发明人： Koichi Hayashi

IPC分类号： B23K1/00 ,  C21D9/08 ,  C22C38/12 ,  F02M55/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  F02M55/02 ,  B23K103/04 ,  B23K101/04

摘要： To obtain, at low cost, a fuel rail that maintains low hardness and good formability before being formed into a tube stock, can be made to form a welded pipe, and has high-strength properties with which the fuel rail can withstand a high fuel pressure even when formed so as to be relatively thin. A fuel rail for gasoline direct injection that is used at a fuel pressure of at least 30 MPa and is formed from an iron-alloy welded pipe. The fuel rail comprises an iron alloy that contains chemical components of C, Si, Mn, P, S, Nb, and Mo. The plate thickness t and the outer diameter D of the fuel rail have a ratio t/D of 0.2 or less. A bainitic structure can be precipitated by brazing the fuel rail in a furnace during manufacturing.

公开(公告)号：US20210140569A1

公开(公告)日：2021-05-13

申请号：US16492527

申请日：2018-03-27

申请人： NIPPON STEEL Stainless Steel Corporation

发明人： Masatoshi ABE ,  Junichi HAMADA ,  Nobuhiko HIRAIDE

IPC分类号： F16L13/02 ,  C22C38/60 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/08 ,  C21D9/46 ,  C21D8/02

摘要： This ferritic stainless steel pipe contains, by mass %: C: 0.001% to 0.100%; Si: 0.01% to 2.00%; Mn: 0.01% to 2.00%; P: 0.001% to 0.05%; S: 0.0001% to 0.005%; Cr: 10.5% to 20.0%; Sn: 0.001% to 0.600%; Ti: 0.001% to 1.000%; Al: 0.001% to 0.100%; and N: 0.001% to 0.02%, with a balance being Fe and unavoidable impurities, the ferritic stainless steel pipe includes a pipe-end-thickened portion at a pipe end portion, and a gap distance d (μun) formed at the pipe end portion satisfies a relationship of d≥Cr2/(1000 Sn) (in the expression, Cr and Sn represent amounts (mass %) of respective elements).

公开(公告)号：US10975450B2

公开(公告)日：2021-04-13

申请号：US16078927

申请日：2016-11-18

申请人： JFE Steel Corporation

发明人： Mitsuhiro Okatsu ,  Masao Yuga ,  Kenichiro Eguchi ,  Haruo Nakamichi

IPC分类号： C21D8/10 ,  C22C38/32 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C21D9/08

摘要： A low alloy high strength thick-walled seamless steel pipe for oil country tubular goods is provided having a wall thickness of 40 mm or more and a yield strength of 758 MPa or more, the steel pipe including a composition containing, in terms of mass %, C: 0.25 to 0.31%, Si: 0.01 to 0.35%, Mn: 0.55 to 0.70%, P: 0.010% or less, S: 0.001% or less, O: 0.0015% or less, Al: 0.015 to 0.040%, Cu: 0.02 to 0.09%, Cr: 0.8 to 1.5%, Mo: 0.9 to 1.6%, V: 0.04 to 0.10%, Nb: 0.005 to 0.05%, B: 0.0015 to 0.0030%, Ti: 0.005 to 0.020%, and N: 0.005% or less, and having Ti/N of 3.0 to 4.0, with the balance being Fe and inevitable impurities, wherein a cumulative frequency rate at a measurement point at which a Mo segregation degree by a predetermined expression is 1.5 or more is 1% or less.

公开(公告)号：US10961599B2

公开(公告)日：2021-03-30

申请号：US15215324

申请日：2016-07-20

申请人： Hyundai America Technical Center, Inc ,  Hyundai Motor Company ,  Kia Motors Corporation

发明人： Alex Khutorsky ,  Jonghyun Kim

IPC分类号： C21D9/08 ,  C21D1/42 ,  C22C38/32 ,  B60J5/04 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/28

摘要： A steel composition, a reinforcement part of a vehicle using the steel composition and a method of manufacturing the reinforcement part using the steel composition are provided. In particular, the steel composition includes increased content of carbon components and the steel composition is processed by rapid heating and immediate quenching.

公开(公告)号：US20210032715A1

公开(公告)日：2021-02-04

申请号：US16968724

申请日：2019-02-22

申请人： VALLOUREC DEUTSCHLAND GmbH

发明人： Mahrez KHOUJA ,  Bernhard KOSCHLIG ,  Ralf HOJDA

IPC分类号： C21D9/08 ,  C21D8/10 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/50

摘要： The present invention deals with alloyed steels having yield strength of at least 862 MPa (125 Ksi) and exhibiting outstanding hardness and toughness behavior, especially under stringent conditions which may be subjected to frost-heave and thaw settlement cycles, namely at subzero temperatures. The invention also relates to a seamless pipe comprising said steel and a method of production of said pipe thereof.

公开(公告)号：US20200318211A1

公开(公告)日：2020-10-08

申请号：US16905323

申请日：2020-06-18

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Thomas HOESL ,  Ulrich SCHMID ,  Markus WIERER ,  Siegfried Georg ZEHENTBAUER

IPC分类号： C21D9/08 ,  C21D8/10 ,  C21D1/613 ,  C21D1/673 ,  B32B1/08 ,  B32B15/01

摘要： A method produces a profiled component. In the method, a profiled structural part is provided and/or manufactured. The profiled structural part is heat-treated and press-hardened in a press hardening tool, wherein the profiled structural part is cooled in its interior by circulating air in the press hardening tool.