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51. 发明授权

US11059102B2 Method for producing components from a duplex steel, and components produced using said method 有权
公开(公告)号：US11059102B2
公开(公告)日：2021-07-13
申请号：US16085472
申请日：2017-03-15
申请人： KSB SE & CO. KGaA
发明人： Alexander Boehm , Stephan Braun , Holger Rauner , Bernd Schramm , Adrian Stein
IPC分类号： B22F10/20 , B22F3/24 , C22C33/02 , C22C38/04 , C21D6/00 , C22C38/02 , C22C38/00 , C22C38/42 , C21D10/00 , C21D1/28 , C22C38/44 , B33Y10/00 , B33Y70/00
摘要： A method for producing components from a duplex steel, and a component formed by the method, are provided. A powder-type duplex steel starting material including an austenitic phase and a ferritic phase is laser melted in successive layers to form a component. The melted and re-solidified component is then subjected to heat treatment to obtain solution annealing of the austenitic phase at a temperature range of between 850° C. and 1,100° C. for a predetermined dwell time, after which the component is cooled and the component has a grain size and grain size number G of at least 9 according to ASTM. The grain size and the grain size number G of the austenitic phase are influenced by the selection of the respective maximum temperature and/or the dwell time of the maximum temperature.

52. 发明申请

US20210121924A1 CASTING-ROLLING SYSTEM FOR BATCH AND CONTINUOUS OPERATION 有权
公开(公告)号：US20210121924A1
公开(公告)日：2021-04-29
申请号：US17056783
申请日：2019-05-23
申请人： SMS GROUP GMBH
发明人： Dieter ROSENTHAL , Christoph KLEIN
IPC分类号： B21B1/26 , C21D9/56 , C21D8/02 , C21D1/28 , B22D11/04 , B22D11/12 , B22D11/14 , B22D11/05
摘要： The invention relates to a casting-rolling system (1) for generating a thin or ultra-thin band from a cast thin slab made of steel in batch or continuous operation, comprising at least one casting system (2a, 2b) for casting a thin slab with a casting thickness from 90 mm to 150 mm, preferably from 90 mm to 140 mm, particularly preferably from 100 mm to 130 mm, and a casting width of at least 600 mm, preferably at least 1000 mm, at least one continuous furnace (7a, 7b) arranged downstream of the at least one casting system (2a, 2b), as well as at least 7, preferably 8 roll stands (9, 10, 14, 15, 16, 17, 18, 19, 20) arranged downstream of the continuous furnace (7a, 7b), wherein the at least one casting system (2a, 2b) comprises a casting mould (3a, 3b) with long sides spaced apart from one another by at least 90 mm to 150 mm, preferably 90 mm to 140 mm, particularly preferably 100 mm to 130 mm, and wherein the casting-rolling system (1) has no induction heater for reheating the cast thin slab and/or the rolled band. The invention also relates to a method for generating a thin or ultra-thin band, preferably by means of a casting-rolling system (1) of this type, wherein the thin slab and/or the band does not undergo any induction heating during the method for generating the thin or ultra-thin band.

53. 发明申请

US20200332381A1 ELECTRIC RESISTANCE WELDED STEEL PIPE OR TUBE AND PRODUCTION METHOD FOR ELECTRIC RESISTANCE WELDED STEEL PIPE OR TUBE 审中-公开
公开(公告)号：US20200332381A1
公开(公告)日：2020-10-22
申请号：US16958736
申请日：2018-12-26
申请人： JFE STEEL CORPORATION , JFE Welded Pipe Manufacturing Co.,Ltd.
发明人： Yoshikazu KAWABATA , Makio GUNJI
IPC分类号： C21D9/08 , B23K11/087 , B23K31/12 , C22C38/38 , C22C38/32 , C22C38/28 , C22C38/24 , C22C38/20 , C22C38/08 , C22C38/06 , C22C38/02 , C22C38/00 , C21D6/00 , C21D1/28
摘要： Provided is an electric resistance welded steel pipe or tube having excellent fatigue durability after rapid and short-time heating quenching treatment. An electric resistance welded steel pipe or tube comprises: a base metal being a steel sheet having a specific chemical composition and an electric resistance weld portion having a bond width of 40×10−6 m or more and 120×10−6 m or less, wherein C0-C1 is 0.05 mass % or less, where C0-C1 is a difference between C1 in mass % which is a minimum C content of the electric resistance weld portion and C0 in mass % which is a C content of the steel sheet, and a depth of a total decarburized layer in each of an inner surface layer and an outer surface layer of the electric resistance welded steel pipe or tube is 50×10−6 m or less.

54. 发明授权

US10689723B2 Ferritic stainless steel and heat-resistant member 有权
公开(公告)号：US10689723B2
公开(公告)日：2020-06-23
申请号：US16001810
申请日：2018-06-06
申请人： DAIDO STEEL CO., LTD.
发明人： Yoshihiko Koyanagi , Hiroyuki Takabayashi
IPC分类号： C22C38/02 , C22C38/04 , C22C38/18 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/42 , C22C38/44 , C22C38/48 , C21D1/28 , C21D7/02 , C21D7/13 , C21D9/02 , C21D9/46 , C21D6/00 , C22C38/00 , C21D8/00 , C21D9/00 , C22C38/40 , C22C38/20
摘要： The present invention relates to a ferritic stainless steel according to the present invention, containing, in mass %: 0.001%≤C≤0.020%, 0.05%≤Si≤0.50%, 0.1%≤Mn≤1.0%, 15.0%≤Cr≤25.0%, Mo

55. 发明申请

US20190382865A1 HEAVY-WALL STEEL PLATE HAVING 450MPA-GRADE TENSILE STRENGTH AND EXCELLENT RESISTANCE TO HYDROGEN INDUCED CRACKING AND METHOD FOR MANUFACTURING SAME 审中-公开
公开(公告)号：US20190382865A1
公开(公告)日：2019-12-19
申请号：US16471268
申请日：2017-11-24
申请人： POSCO
发明人： Seong-Ung KOH , Yoen-Jung PARK
IPC分类号： C21D9/46 , C22C38/58 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C22C38/00 , C21D8/02 , C21D6/00 , C21D1/28
摘要： The present disclosure relates to a heavy-wall steel plate having 450 MPa-grade tensile strength and excellent resistance to hydrogen induced cracking, and a method for manufacturing the same. The heavy-wall steel plate includes, by weight, carbon (C): 0.03% to 0.06%, silicon (Si): 0.2% to 0.4%, manganese (Mn): 1.0% to 1.6%, phosphorus (P): 0.03% or less, sulfur (S): 0.003% or less, aluminum (Al): 0.06% or less, nitrogen (N): 0.01% or less, copper (Cu): 0.05% to 0.4%, nickel (Ni): 0.05% to 0.5%, calcium (Ca): 0.0005% to 0.003%, a balance of iron (Fe), and other unavoidable impurities, wherein a thickness of the heavy-wall steel plate is 40 mm or more.

56. 发明授权

US10351922B2 Surface hardenable stainless steels 有权
公开(公告)号：US10351922B2
公开(公告)日：2019-07-16
申请号：US14691956
申请日：2015-04-21
申请人： QuesTek Innovations, LLC
发明人： David R. Snyder , Jiadong Gong , Jason T. Sebastian , James A. Wright , Herng-Jeng Jou , Zechariah Feinberg
IPC分类号： C22C38/00 , C21D6/00 , C21D8/00 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C33/04 , B22D7/00 , C21D9/70 , C21D1/26 , C21D6/02 , C21D1/28
摘要： Alloys, a process for preparing the alloys, and manufactured articles including the alloys are described herein. The alloys include, by weight, about 11.5% to about 14.5% chromium, about 0.01% to about 3.0% nickel, about 0.1% to about 1.0% copper, about 0.1% to about 0.2% carbon, about 0.01% to about 0.1% niobium, 0% to about 5% cobalt, 0% to about 3.0% molybdenum, and 0% to about 0.5% titanium, the balance essentially iron and incidental elements and impurities.

57. 发明授权

US10179955B2 Production method for rare earth permanent magnet 有权
公开(公告)号：US10179955B2
公开(公告)日：2019-01-15
申请号：US14424707
申请日：2013-08-30
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Yoshifumi Nagasaki , Masanobu Shimao
IPC分类号： H01F41/02 , C21D1/18 , C25D15/00 , C25D7/00 , B22F3/24 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/14 , C25D13/02 , C25D13/22 , C21D1/28 , H01F1/053 , H01F1/057
摘要： A production method for a rare earth permanent magnet, wherein: a sintered magnet body comprising an R1—Fe—B composition (R1 represents one or more elements selected from among rare earth elements, including Y and Sc) is immersed in an electrodeposition liquid comprising a slurry obtained by dispersing a powder containing an R2 fluoride (R2 represents one or more elements selected from among rare earth elements, including Y and Sc) in water; an electrodeposition process is used to coat the powder onto the surface of the sintered magnet body; and, in the state in which the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to a heat treatment in a vacuum or an inert gas at a temperature equal to or less than the sintering temperature of the magnet.

58. 发明授权

US10138564B2 Production method for rare earth permanent magnet 有权
公开(公告)号：US10138564B2
公开(公告)日：2018-11-27
申请号：US14424647
申请日：2013-08-30
申请人： Shin-Etsu Chemical Co., Ltd.
发明人： Yoshifumi Nagasaki , Masanobu Shimao
IPC分类号： B22F7/04 , H01F1/057 , C25D7/00 , B22F3/24 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/14 , C25D3/56 , H01F41/02 , C21D1/28 , H01F1/053
摘要： A production method for a rare earth permanent magnet, wherein: a sintered magnet body comprising an R1—Fe—B composition (R1 represents one or more elements selected from rare earth elements including Y and Sc) is immersed in an electrodeposition liquid obtained by dispersing a powder containing an R2 oxide (R2 represents one or more elements selected from rare earth elements including Y and Sc) in a solvent; an electrodeposition process is used to coat the powder to the surface of the sintered magnet body; and, in the state in which the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to heat treatment in a vacuum or an inert gas at a temperature equal to or less than the sintering temperature of the magnet.

59. 发明申请

US20180056369A1 HOT STEEL FORGING IN HORIZONTAL PRESS 审中-公开
公开(公告)号：US20180056369A1
公开(公告)日：2018-03-01
申请号：US15565312
申请日：2016-04-11
申请人： TECNIFORJA - FORJAGEM E ESTAMPAGEM DE PEÇAS TÉCNICAS, LDA
发明人： Artur José PEREIRA TEIXEIRA MENDES
IPC分类号： B21J5/02 , C21D9/08 , C21D1/84 , C21D1/28 , C21D7/13 , B21K1/76 , B21K21/12 , B21K1/06 , B21J1/06 , B21J5/08
CPC分类号： B21J5/022 , B21J1/06 , B21J5/08 , B21K1/063 , B21K1/765 , B21K21/12 , C21D1/28 , C21D1/84 , C21D7/13 , C21D9/08
摘要： The present disclosure relates to a steel forging process, in particular a hot steel forging process in horizontal press of a metal tube, preferably a cylindrical steel tube.

60. 发明授权

US09771639B2 High-strength and high-toughness steel plate with yield strength of 700 MPa and method of manufacturing the same 有权
公开(公告)号：US09771639B2
公开(公告)日：2017-09-26
申请号：US14129103
申请日：2012-05-25
申请人： Aiwen Zhang , Sihai Jiao , Qingfeng Zhang
发明人： Aiwen Zhang , Sihai Jiao , Qingfeng Zhang
IPC分类号： C22C38/02 , C22C38/50 , C21D8/02 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/44 , C21D1/28 , C21D1/30
CPC分类号： C22C38/50 , C21D1/28 , C21D1/30 , C21D8/021 , C21D8/0226 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： The present invention relates to a high-strength high-toughness steel plate and a method of manufacturing the steel plate. The steel plate contains the following chemical compositions, by weight, C: 0.03-0.06%, Si≦0.30%, Mn: 1.0-1.5%, P≦0.020%, S≦0.010%, Al: 0.02-0.05%, Ti: 0.005-0.025%, N≦0.006%, Ca≦0.005%, and more than one of Cr≦0.75%, Ni≦0.40%, Mo≦0.30%, other compositions being Ferrum and unavoidable impurities. The finished steel plate, with a thickness of 6-25 mm, has a yield strength of ≧700 MPa, an elongation A50 of ≧18%, Akv at −60° C. of ≧150 J and good cool bending property.

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