公开(公告)号：US20170356070A1

公开(公告)日：2017-12-14

申请号：US15599497

申请日：2017-05-19

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Takeo MIYAMURA ,  Shigenobu NAMBA ,  Zhuyao CHEN

IPC分类号： C22C38/10 ,  C22C38/04 ,  C22C38/28 ,  C22C38/00 ,  C22C38/50 ,  C22C38/22 ,  C22C38/06

CPC分类号： C22C38/105 ,  C21D1/18 ,  C21D6/004 ,  C21D6/007 ,  C21D6/02 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/28 ,  C22C38/44 ,  C22C38/50 ,  C22C38/52

摘要： Disclosed is a mar aging steel containing, in combination in mass percent, C in a content from greater than 0% to 0.02%, Mn in a content from greater than 0% to 0.3%, Si in a content from greater than 0% to 0.3%, Ni in a content of 10% to 13%, Mo in a content of 0.5% to 3.5%, Co in a content of 9% to 12%, Cr in a content of 1.5% to 4.5%, Ti in a content of 1.5% to 4.5%, and Al in a content of 0.01% to 0.2%, where the total content of Mo and Ti is 5.0 mass percent or less, and the ratio ([Mo]/[Ti]) of the Mo content [Mo] to the Ti content [Ti] is 1.0 or less, with the remainder consisting of iron and inevitable impurities.

公开(公告)号：US20170349985A1

公开(公告)日：2017-12-07

申请号：US15539874

申请日：2015-12-01

申请人： POSCO

发明人： Hyung Gu KANG ,  Gyu Jin JO ,  Dong Chul CHAE ,  Jae Hwa LEE

IPC分类号： C22C38/42 ,  C22C38/02 ,  C22C38/04

CPC分类号： C22C38/42 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/46 ,  C21D2211/001 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/58 ,  C22C2202/00

摘要： Austenitic stainless steels excellent in flexibility are provided. The austenitic stainless steel excellent in flexibility includes, by weight percent, 0.1 to 0.65% of Si, 1.0 to 3.0% of Mn, 6.5 to 10.0% of Ni, 16.5 to 18.5% of Cr, 6.0% or less of Cu (excluding 0), 0.13% or less of (C+N) (excluding 0), and the remainder including Fe and unavoidable impurities, wherein the work hardening formula H1 defined by the following formula is 300 or less. H1=−459+79.8Si−10.2Mn−8.16Ni+48.0Cr−13.2Cu+623(C+N).

公开(公告)号：US20170349963A1

公开(公告)日：2017-12-07

申请号：US15537669

申请日：2015-09-10

申请人： JFE STEEL CORPORATION

发明人： Masao Yuga ,  Yasuhide Ishiguro ,  Seiji Nabeshima ,  Mitsuhiro Okatsu ,  Hiroki Ota

IPC分类号： C21D9/08 ,  C21D1/18 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C21D6/00 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/50 ,  C21D8/10 ,  C22C38/54 ,  C22C38/42

CPC分类号： C21D9/085 ,  C21D1/18 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D9/46 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

摘要： A high-strength seamless steel pipe for oil country tubular goods comprising, by mass %, C: 0.20% to 0.50%, Si: 0.05% to 0.40%, Mn: 0.3% to 0.9%, P: 0.015% or less, S: 0.005% or less, Al: 0.005% to 0.1%, N: 0.006% or less, Mo: more than 1.0% to 3.0% or less, V: 0.01% to less than 0.05%, Nb: 0.001% to less than 0.01%, B: 0.0003% to 0.0030%, O: 0.0030% or less, and Ti: 0.003% to 0.025%, and wherein Ti/N: 2.0 to 5.0 is satisfied, a volume fraction of a tempered martensitic is 95% or more, prior austenite grains have a grain size number of 8.5 or more, and in a cross-section perpendicular to a rolling direction, the number of nitride-based inclusions having a grain size of 4 μm or more is 100 or less per 100 mm2, the number of nitride-based inclusions having a grain size of less than 4 μm is 1000 or less per 100 mm2, the number of oxide-based inclusions having a grain size of 4 μm or more is 40 or less per 100 mm2, and the number of oxide-based inclusions having a grain size of less than 4 μm is 400 or less per 100 mm2.

公开(公告)号：US20170349962A1

公开(公告)日：2017-12-07

申请号：US15534472

申请日：2015-12-04

申请人： NHK SPRING CO., LTD.

发明人： Shinichiro KUWATSUKA ,  Yurika OKUDAIRA ,  Akira TANGE ,  Hideki OKADA ,  Ken TAKAHASHI

IPC分类号： C21D9/00 ,  B21D47/00 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  B21D53/88 ,  C21D8/06 ,  C21D7/06 ,  C21D6/00 ,  C21D1/60 ,  B60G21/055 ,  B24C1/10 ,  C22C38/54

CPC分类号： C21D9/0068 ,  B21D47/00 ,  B21D53/88 ,  B24C1/10 ,  B60G21/055 ,  B60G2206/427 ,  B60G2206/724 ,  B60G2206/81035 ,  B60G2206/8402 ,  B60G2206/8403 ,  C21D1/60 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D7/06 ,  C21D8/065 ,  C21D9/0075 ,  C21D9/02 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C22C38/60 ,  F16F1/14

摘要： A stabilizer formed by using a metal bar having a solid structure and configured to reduce a displacement between right and left wheels, including a torsion part extending in a vehicle width direction, being capable of a torsional deformation, and having a diameter of 10 to 32 mm, is provided. The stabilizer has a chemical composition containing at least C: 0.15% by mass or more to 0.39% by mass or less, Mn, B, and Fe, and also has a metal structure 90% or more of which is a martensite structure.

公开(公告)号：US09834832B2

公开(公告)日：2017-12-05

申请号：US14151310

申请日：2014-01-09

申请人： Daniel James Branagan ,  Sheng Cheng ,  Longzhou Ma ,  Jason K. Walleser ,  Grant G. Justice ,  Andrew T. Ball ,  Kurtis Clark ,  Scott Larish ,  Alissa Peterson ,  Patrick E. Mack ,  Brian D. Merkle ,  Brian D. Meacham ,  Alla V. Sergueeva

发明人： Daniel James Branagan ,  Sheng Cheng ,  Longzhou Ma ,  Jason K. Walleser ,  Grant G. Justice ,  Andrew T. Ball ,  Kurtis Clark ,  Scott Larish ,  Alissa Peterson ,  Patrick E. Mack ,  Brian D. Merkle ,  Brian D. Meacham ,  Alla V. Sergueeva

IPC分类号： C22C38/58 ,  C21D8/10 ,  C22C38/34 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C21D6/00 ,  C21D9/08 ,  C22C33/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C45/02 ,  B22D13/02 ,  B22F5/10 ,  C22C32/00

CPC分类号： C22C38/58 ,  B22D13/023 ,  B22F5/106 ,  B22F2998/10 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/105 ,  C21D9/08 ,  C21D9/085 ,  C21D2211/004 ,  C22C32/0073 ,  C22C33/003 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/34 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  C22C45/02 ,  B22F9/082 ,  B22F3/15 ,  B22F3/20

摘要： The present disclosure is directed and formulations and methods to provide alloys having relative high strength and ductility. The alloys may be provided in seamless tubular form and characterized by their particular alloy chemistries and identifiable crystalline grain size morphology. The alloys are such that they include boride pinning phases. In what is termed a Class 1 Steel the alloys indicate tensile strengths of 700 MPa to 1400 MPa and elongations of 10-70%. Class 2 Steel indicates tensile strengths of 800 MPa to 1800 MPa and elongations of 5-65%. Class 3 Steel indicates tensile strengths of 1000 MPa to 2000 MPa and elongations of 0.5-15%.

公开(公告)号：US09828650B2

公开(公告)日：2017-11-28

申请号：US15015739

申请日：2016-02-04

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Huaxin Li ,  Glenn E. Clever

IPC分类号： C21D9/30 ,  C21D1/06 ,  C21D1/22 ,  C21D1/58 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C23C8/22 ,  F16H53/02

CPC分类号： C21D9/30 ,  C21D1/06 ,  C21D1/22 ,  C21D1/58 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C23C8/22 ,  C23C8/32 ,  C23C8/80 ,  F16H53/025

摘要： A method of manufacturing a sliding camshaft for an internal combustion engine includes providing the sliding camshaft from a steel alloy having a carbon content between 0.25% and 0.60%. The sliding camshaft is then processed with a carbon infusing heat treatment process, such as carburization or carbonitriding. After the sliding camshaft has been processed with the carbon infusing heat treatment process, the sliding camshaft is then processed with a quenching heat treatment process, such as a mar-quenching heat treatment process.

公开(公告)号：US20170335422A1

公开(公告)日：2017-11-23

申请号：US15529842

申请日：2015-10-07

申请人： JFE STEEL CORPORATION

发明人： Shunsuke Sasaki ,  Tatsuro Katsumura ,  Hiroki Ushida ,  Yasushi Kato

IPC分类号： C21D9/08 ,  B21B3/02 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C30/00 ,  C22C38/50 ,  B21B17/08 ,  B21B19/04 ,  C21D8/10 ,  C21D6/00 ,  B21B45/02 ,  B21B45/00 ,  C22C38/54

CPC分类号： C21D9/085 ,  B21B3/02 ,  B21B17/08 ,  B21B19/04 ,  B21B45/004 ,  B21B45/02 ,  B21B45/0209 ,  B21B45/0215 ,  B21B2045/0227 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/10 ,  C21D8/105 ,  C21D9/08 ,  C21D2211/001 ,  C21D2211/005 ,  C22C30/00 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

摘要： An apparatus line for manufacturing seamless steel pipes and tubes includes: a heating apparatus for heating a steel raw material; a piercing apparatus for piercing the heated steel raw material thus forming a hollow material; and a rolling apparatus for applying working to the hollow material to form a seamless steel pipe having a predetermined shape. A cooling apparatus is arranged on an exit side of the rolling apparatus. A heated steel raw material is worked by the rolling apparatus after being pierced by the piercing apparatus, and thereafter, using a surface temperature of a hollow piece before being cooled by the cooling apparatus as a cooling start temperature, the hollow piece is cooled to a cooling stop temperature differing by 50° C. or more from the cooling start temperature and being equal to or above 600° C. at an average cooling speed of 1.0° C./s or more in terms of an outer surface temperature.

公开(公告)号：US09797025B2

公开(公告)日：2017-10-24

申请号：US15409348

申请日：2017-01-18

申请人： ArcelorMittal ,  Ugitech

发明人： Jerome Peultier ,  Amelie Fanica ,  Nicolas Renaudot ,  Christophe Bourgin ,  Eric Chauveau ,  Marc Mantel

IPC分类号： C21D8/00 ,  C21D9/52 ,  B22D11/00 ,  C21D1/613 ,  C21D1/60 ,  C21D9/46 ,  C21D8/02 ,  C21D8/06 ,  C22C38/60 ,  C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B21B3/02 ,  B21C1/00 ,  B21J1/02

CPC分类号： C21D9/525 ,  B21B1/00 ,  B21B3/02 ,  B21C1/003 ,  B21J1/02 ,  B22D11/002 ,  C21D1/60 ,  C21D1/613 ,  C21D6/004 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/065 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

摘要： A method for manufacturing a plate, a band, or a coil of hot-rolled steel is provided. The method includes providing an ingot or a slab of steel with a desired composition and a microstructure composed of austenite and 35 to 65% ferrite by volume and hot rolling the ingot or slab at a temperature between 1150 and 1280° C. to obtain a plate, a band or a coil. A method for manufacturing a hot-rolled bar or wire of steel, a steel profile and a forged steel piece are also provided.

公开(公告)号：US20170292177A1

公开(公告)日：2017-10-12

申请号：US15505678

申请日：2015-08-31

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Yuji ARAI ,  Keiichi KONDO ,  Koji NAGAHASHI

IPC分类号： C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C21D9/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00 ,  C21D6/00 ,  C22C38/42 ,  C22C38/54

CPC分类号： C22C38/44 ,  C21D6/004 ,  C21D9/08 ,  C21D9/085 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

摘要： A thick-wall oil-well steel pipe has a wall thickness of 40 mm or more, excellent SSC resistance and high strength. The thick-wall oil-well steel pipe has a composition containing, in mass %, C: 0.40 to 0.65%, Si: 0.05 to 0.50%, Mn: 0.10 to 1.0%, P: 0.020% or less, S: 0.0020% or less, sol. Al: 0.005 to 0.10%, Cr more than 0.40 to 2.0%, Mo: more than 1.15 to 5.0%, Cu: 0.50% or less, Ni: 0.50% or less, N: 0.007% or less, and O: 0.005% or less. The number of carbide which has a circle equivalent diameter of 100 nm or more and contains 20 mass % or more of Mo is 2 or less per 100 mm2. The thick-wall oil-well steel pipe has yield strength of 827 MPa or more. A difference between a maximum value and a minimum value of the yield strength in the wall-thickness direction is 45 MPa or less.

公开(公告)号：US20170275728A1

公开(公告)日：2017-09-28

申请号：US15512417

申请日：2015-09-30

申请人： HITACHI METALS, LTD.

发明人： Kazuhiro YAMAMURA ,  Toshihiro UEHARA ,  Shigenori TANAKA

IPC分类号： C21D9/46 ,  C21D6/00 ,  C21D1/26 ,  C22C38/44 ,  C22C38/42 ,  H01M8/021 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/50 ,  C21D8/02 ,  B21B3/02 ,  C22C38/06

CPC分类号： C21D9/46 ,  B21B1/22 ,  B21B3/02 ,  C21D1/26 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  H01M8/021 ,  H01M2008/1293 ,  Y02P70/56

摘要： There is provided a steel for solid oxide fuel cells which contains Zr and has a composition balance which allows a thin plate to stably obtain excellent oxidation resistance. The steel for solid oxide fuel cells contains more than 0 and not more than 0.05 mass % of C, 0.05 mass % or less of N, 0.01 mass % or less of O, 0.2 mass % or less of Al, 0.15 mass % or less of Si, 0.1 to 1.0 mass % of Mn, 20.0 to 25.0 mass % of Cr, more than 0 mass % and not more than 1.0 mass % of Ni, 0.02 to 0.12 mass % of La, 0.1 to 0.5 mass % of Zr, 0.15 to 0.5 mass % of La+Zr, and Fe and impurities as a remainder. The following relational formula is satisfied, and an Fe and Zr-containing intermetallic compound viewed in a ferrite matrix is 1.1 mass % or less in terms of a visual field area ratio. 5(7C+6N)/(7−4(7C+6N))≦Zr≦41(7C+6N)/(7+66(7C+6N))