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1.发明申请公开(公告)号：US20230002843A1
公开(公告)日：2023-01-05
申请号：US17779266
申请日：2020-09-28
发明人： Ning TAN , Hao LIU , Jiyao HONG , Xinyan JIN
IPC分类号： C21D8/02 , C23C30/00 , C22C38/32 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/06 , C22C38/04 , C22C21/10 , C21D6/00 , C21D7/13 , C21D9/00 , C22C38/02
摘要： Disclosed are thermoformed component having excellent coating adhesion and a method for manufacturing the same. The thermoformed component comprises a substrate layer and an aluminum coating coated on at least one surface of the substrate layer, wherein the average roughness Ra of a surface of the thermoformed component is between 1.0 μm and 3.0 μm, the peak height and the peak-to-valley height Rt are between 8 μm and 30 μm, and the roughness peak count Rpc is greater than or equal to 50. The thermoformed component has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts.
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2.发明申请公开(公告)号：US20230001504A1
公开(公告)日：2023-01-05
申请号：US17780598
申请日：2020-11-27
发明人： Peng XUE , Xiaodong ZHU , Bo YAN , Sihai JIAO
IPC分类号： B23K20/04 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/58 , C22C38/06 , B21B1/38
摘要： Disclosed in the present invention is a manufacturing method for a carbon steel and austenitic stainless-steel rolling clad plate, comprising the steps of: (1) obtaining a blank material of a carbon steel layer and a blank material of a stainless-steel layer; (2) assembling blank materials; (3) cladding and rolling; (4) cold rolling; (5) first annealing; and (6) second annealing. The carbon steel and austenitic stainless-steel rolling clad plate has two unique annealing processes, so that the clad plate has the performance advantages of the austenitic stainless-steel and the carbon steel. In addition, further disclosed in the present invention is a carbon steel and austenitic stainless-steel rolling clad plate manufactured by this method.
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公开(公告)号：US11519049B2
公开(公告)日：2022-12-06
申请号：US16982181
申请日：2019-03-14
发明人： Wen Sun , Zhonghua Zhang , Xiaoming Dong
IPC分类号： C21D9/08 , C21D8/10 , C21D6/00 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/06 , C22C38/02 , C22C38/04 , C22C38/00
摘要： The present disclosure provides a low temperature resistant oil casing having high strength and high toughness, and the manufacturing method thereof, the chemical composition of the oil casing by mass of: C: 0.08-0.14%, Si: 0.1-0.4%, Mn: 0.6-1.3%, Cr: 0.5-1.5%, Mo: 0.2-0.5%, Ni: 0.2-0.5%, Nb: 0.02-0.05%, V: 0-0.1%, Al: 0.01-0.05%, Ca: 0.0005-0.005%, and the balance being Fe and unavoidable impurities. The method of manufacturing the oil casing includes: (1) smelting and continuous casting; (2) perforating and continuous rolling; (3) heat treatment, wherein an austenitizing temperature is controlled in the range of 900-930° C., and held for 30-60 min, followed by quenching, subsequently, tempering at temperature of 480-600° C., holding the temperature for 50-80 min; (4) hot sizing.
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公开(公告)号：US20220341026A1
公开(公告)日：2022-10-27
申请号：US17763423
申请日：2020-09-25
发明人： Sanbing Ren , Junfei Fan , Shanqing Li , Chunwei Zhang , Xiaoli Jin
摘要： The present invention discloses a vacuum coating device, comprising: a crucible; an induction heater provided on the periphery of the crucible; a flow distribution box connected to the top of said crucible via a steam pipe. Wherein said flow distribution box is provided inside with a horizontal pressure stabilizing plate, said flow distribution box is connected on the top with a nozzle, said steam pipe is provided with a pressure regulating valve, and said pressure stabilizing plate has a multi-hole structure. The lower surface of said pressure stabilizing plate is connected to a horizontal flow suppression plate, and a space is formed between the side of said flow suppression plate and the inner wall of said flow distribution box. A jet moderating zone is formed between the joint where said flow distribution box and said steam pipe are connected and the lower surface of said pressure stabilizing plate, and a jet accelerating zone is formed between the upper surface of said pressure stabilizing plate and the joint where said flow distribution box and said nozzle are connected. When the high-temperature steam reaches the low-temperature steel plate, a uniform coating can be formed on the steel plate surface.
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公开(公告)号：US20220341010A1
公开(公告)日：2022-10-27
申请号：US17762627
申请日：2020-09-25
发明人： Chunsu LIU , Yulong ZHANG , Siliang ZHANG , Feng YANG , Yaping NI , Jintao WANG , Hanlong ZHANG , Ming WANG
摘要： Disclosed in the present invention is complex-phase steel having high hole expansibility. The complex-phase steel has a microstructure of ferrite and bainite. The complex-phase steel having high hole expansibility comprises the following chemical elements in percentage by mass: C: 0.06-0.09%, Si: 0.05-0.5%, Al: 0.02-0.1%, Mn: 1.5-1.8%, Cr: 0.3-0.6%, Nb≤0.03%, Ti: 0.05-0.12%, and the balance of Fe and inevitable impurities. In addition, also disclosed in the present invention is a manufacturing method for the foregoing complex-phase steel having high hole expansibility. The method comprises the following steps: (1) smelting and casting; (2) heating; (3) hot-rolling; (4) phosphorous removal; (5) laminar cooling: a relaxation time period is controlled to be 0-8 s, and a laminar cooling rate is 40-70° C./s; (6) coiling; (7) leveling; and (8) pickling. The complex-phase steel having high hole expansibility can simultaneously satisfy the requirements for hole expansibility and good plasticity.
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公开(公告)号：US11459634B2
公开(公告)日：2022-10-04
申请号：US16963334
申请日：2018-06-21
发明人： Shuangjie Chu , Guobao Li , Yongjie Yang , Zipeng Zhao , Changsong Ma , Kanyi Shen , Meihong Wu , Yaming Ji , Huabing Zhang , Zhuochao Hu
IPC分类号： C21D9/46 , C21D1/30 , C21D8/12 , B23K26/0622 , B23K26/082 , B23K26/06 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , H01F41/02
摘要： Disclosed is a method for manufacturing stress-relief-annealing-resistant, low-iron-loss grain-oriented silicon steel, the method comprising: carrying out, by means of a pulse laser, scanning grooving on a single surface or two surfaces of a silicon steel sheet after cold rolling, or after decarburizing annealing, or after high temperature annealing or after hot stretching, temper rolling and annealing, and forming several grooves parallel with each other in a rolling direction of the silicon steel sheet, wherein a single pulse time width of the pulse laser is 100 ns or less, and a single pulse peak energy density is 0.05 J/cm2 or more; the energy density of a single scan of a single laser beam is 1 J/cm2 to 100 J/cm2; a beam spot of the pulse laser is a single beam spot or a combination of a plurality of beams spots, the shape of the beam spot is circular or elliptic, and the diameter of the beam spot in a scanning direction is 5 μm to 1 mm, and the diameter thereof in a direction perpendicular to the scanning direction is 5 μm to 300 μm; and when scanning grooving is carried out at the same position on the silicon steel sheet, the product of the number of beam spots of the pulse laser and the scan times is 5 or more.
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7.发明申请公开(公告)号：US20220305549A1
公开(公告)日：2022-09-29
申请号：US17617663
申请日：2020-06-10
发明人： Hongquan WEN , Yueming ZHOU , Cunyou WU , Chao HU , Xiaoli JIN , Xianjiu ZHAO , Chunfeng WANG
IPC分类号： B22D11/115 , B22D11/22 , B22D11/124 , B22D11/12
摘要： Disclosed are an electromagnetic stirring device and a method for a secondary cooling zone during slab continuous casting. The device comprises an electromagnetic stirring device main body comprising a protection housing (3), a phase sequence control assembly, an iron core (4) and an electromagnetic coil (5) for carrying out variable-direction electromagnetic stirring on molten steel by means of three-phase current phase sequence transformation; an opening adjustment assembly comprising an air cylinder (7), a fixed base (8), a movable joint shaft (12) and a silicon steel sheet group insert (13) for adjusting online the opening degree of the closed annular iron core by means of a movable joint structure; and the secondary cooling assembly comprising a cooling water inlet (9) and a cooling water nozzle (10) for cooling the electromagnetic coil and spraying cooling water to a surface of a cast slab (1).
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公开(公告)号：US20220235429A1
公开(公告)日：2022-07-28
申请号：US17619345
申请日：2020-06-24
发明人： Xiaodong ZHU , Peng XUE , Wei LI
IPC分类号： C21D9/46 , C22C38/38 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/02 , C22C38/00 , C21D8/02 , C21D6/00 , C21D1/18
摘要： Disclosed is a method for manufacturing a cold-rolling strip steel (1) with the strength and hardness thereof varying in a thickness direction, the method comprising the steps: smelting, continuous casting, hot rolling, cold rolling, and continuous annealing. When quenching is performed in the continuous annealing step, an asymmetric quenching and cooling process is performed on both surfaces of the strip steel. In addition, also disclosed is a cold-rolling strip steel (1) with the strength and hardness thereof varying in a thickness direction, which is prepared by the above manufacturing method. The manufacturing method realizes asymmetric mechanical property distribution of the strip steel by performing an asymmetric quenching and cooling process on the strip steel, thereby obtaining a gradual hardness gradient in a thickness direction, so as to obtain the combined properties of high hardness and high strength, and also excellent toughness, plasticity and formability, which can effectively deal with the contradiction between the strength, plasticity and toughness of ultra high-strength steel.
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公开(公告)号：US11377712B2
公开(公告)日：2022-07-05
申请号：US16616109
申请日：2018-04-20
发明人： Xinyan Jin , Yong Zhong , Guangkui Hu
IPC分类号： C21D9/56 , C22C38/00 , C23C2/06 , B32B15/01 , C21D1/26 , C21D1/74 , C21D6/00 , C22C18/04 , C22C38/02 , C22C38/04 , C22C38/06 , C23C2/40
摘要： A hot dipped high manganese steel and a manufacturing method therefor. The high manganese steel comprises a steel base plate and a coating on the surface of the steel base plate. The core of the steel base plate is austenite. The surface layer of the steel base plate is a ferrite fine grain layer. The ferrite fine grain layer comprises an oxide of Al. Furthermore, the steel base plate of the hot dipped high manganese steel comprises, in mass percentages, 10 to 30% of Mn element, 1 to 2% of Al element, and 0.4 to 0.8% of C element. The manufacturing method comprises: 1) manufacturing strip steel; 2) primary annealing and acid washing; 3) secondary annealing and hot dipping.
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公开(公告)号：US20220195571A1
公开(公告)日：2022-06-23
申请号：US17609247
申请日：2020-05-25
发明人： Jun ZHANG , Sixin ZHAO , Jiaqiang GAO , Wei WANG
IPC分类号： C22C38/54 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C21D8/06 , C21D1/18 , C21D9/00
摘要： Provided is a steel comprising the following chemical composition in percentage by mass: 0.150-0.250% of C, 0.10-0.50% of Si, 0.60-1.50% of Mn, 0.30-1.20% of Cr, 0.20-0.80% of Mo, 2.00-4.00% of Ni, 0-0.10% of Nb, 0.0010-0.0050% of B, 0-0.12% of V, 0.003-0.06% of Ti, 0.01-0.08% of Al, the balance being Fe and unavoidable impurities. Also provided is a steel bar and a manufacturing method thereof. The steel bar is made from the above steel. The manufacturing method comprises the steps of smelting and casting, heating, forging or rolling, quenching, and tempering.
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