公开(公告)号：US11866801B2

公开(公告)日：2024-01-09

申请号：US17477073

申请日：2021-09-16

Applicant: PanGang Group Panzhihua Iron & Steel Research Institute Co., Ltd.

Inventor： Xin Lu ,  Dadong Li ,  Wei Bai ,  Feixiang Xu

IPC: C21D9/50 ,  C21D8/00 ,  C21D9/04

CPC classification number: C21D9/505 ,  C21D8/005 ,  C21D9/04 ,  C21D2211/003 ,  C21D2211/009

Abstract: The present disclosure relates to the technical field of rails welding, and particularly to a method for optimizing microstructure of a rail welded joint, the method comprises the following steps: step 1): subjecting a rail web area of a to-be-cooled welded joint which is obtained by flash butt welding to an accelerated cooling by means of an accelerated cooling device and by using compressed air as a cooling medium, measuring and monitoring temperature of a central position of the rail web of the welded joint while cooling; step 2): stopping the accelerated cooling when the temperature of the central position of the rail web drops to a preset temperature, then placing the welded joint in air and naturally cooling to room temperature, wherein the rail is a pearlite rail having a carbon content of 0.6-0.9 wt %.

公开(公告)号：US20230399051A1

公开(公告)日：2023-12-14

申请号：US18450472

申请日：2023-08-16

Applicant: ArcelorMittal

Inventor： Cristian ALVAREZ ,  Thierry LIZON ,  Maria POIRIER

IPC: B62D21/15 ,  B23K26/60 ,  B21D22/02 ,  B23K26/00 ,  B23K26/24 ,  B23K33/00 ,  B23K35/24 ,  B23K35/38 ,  B62D27/02 ,  C21D6/00 ,  C21D9/50 ,  C22C19/05 ,  C22C30/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

CPC classification number: B62D21/15 ,  B23K26/60 ,  B21D22/022 ,  B23K26/0006 ,  B23K26/24 ,  B23K33/00 ,  B23K35/24 ,  B23K35/383 ,  B62D27/02 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/505 ,  C22C19/057 ,  C22C30/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  B23K2101/185

Abstract: A method for producing a welded blank (1) includes providing two precoated sheets (2), butt welding the precoated sheets (2) using a filler wire. The precoating (5) entirely covers at least one face (4) of each sheet (2) at the time of butt welding. The filler wire (20) has a carbon content between 0.01 wt. % and 0.45 wt. %. The composition of the filler wire (20) and the proportion of filler wire (20) added to the weld pool is chosen such that the weld joint (22) has (a) a quenching factor FTWJ: FTWJ−0.9FTBM≥0, where FTBM is a quenching factor of the least hardenable substrate (3), and FTWJ and FTBM are determined: FT=128+1553×C+55×Mn+267×Si+49×Ni+5×Cr−79×Al−2×Ni2−1532×C2−5×Mn2−127×Si2−40×C×Ni−4×Ni×Mn, and (b) a carbon content CWJ 5000, where FA=10291+4384.1×Mo+3676.9Si−522.64×Al−2221.2×Cr−118.11×Ni−1565.1×C−246.67×Mn.

公开(公告)号：US20230183831A1

公开(公告)日：2023-06-15

申请号：US17801019

申请日：2021-02-24

Applicant: Multimatic Inc.

Inventor： Mark Sullivan

IPC: C21D9/08 ,  B21K21/12 ,  B23K9/028 ,  B23K9/173 ,  B23K9/235 ,  B23K33/00 ,  C21D9/50 ,  C21D8/10 ,  C21D1/56 ,  C21D1/18

CPC classification number: C21D9/085 ,  B21K21/12 ,  B23K9/0282 ,  B23K9/173 ,  B23K9/235 ,  B23K33/008 ,  C21D9/505 ,  C21D8/105 ,  C21D1/56 ,  C21D1/18 ,  C21D2211/008

Abstract: A process for preparing a multi-thickness welded steel vehicle rail, the process comprises the steps of: (a) forming a first tube having a first outer diameter, an inner diameter and a first wall thickness; (b) forming a second tube having the first outer diameter, a second inner diameter and a second wall thickness different than the first wall thickness; (c) swaging a first end of the first tube to a second outer diameter less than the second inner diameter of the second tube; (d) inserting the swaged first end of the first tube into an end of the second tube to form a joint; (e) welding the first tube and the second tube together to form a weld at the joint to form a tube blank with a heat affected zone of lower metal strength in the area of the weld; (f) preheating the tube blank to create a common crystalline microstructure along a length of the tube blank; (g) introducing the tube blank into a blow molding tool having inner molding walls; (h) molding the tube blank at an elevated temperature by expanding the tube blank against the inner molding walls of the molding tool by injecting a pressurized medium into an interior cavity of the tube blank; and (i) quenching the tube blank by replacing the pressurized medium with a cooling medium through the molding tool and the tube blank to achieve a rapid cooling effect on the tube blank and to create a completed vehicle rail with essentially uniform material strength across the weld. A completed vehicle rail has an overlapped welded structure and uniform microcrystalline structure along the length of the rail.

公开(公告)号：US20180030562A1

公开(公告)日：2018-02-01

申请号：US15221993

申请日：2016-07-28

Applicant: THE GLEASON WORKS

Inventor： Arthur C. Reardon

IPC: C21D9/32 ,  C21D6/00 ,  B23K20/12 ,  C21D9/50

CPC classification number: C21D9/32 ,  B23K20/12 ,  C21D1/18 ,  C21D6/00 ,  C21D9/505

Abstract: A heat treatment process for a non-quench hardened steel article or friction-welded steel article including normalizing and annealing steps whereby uniformity of microstructure and hardness are significantly improved.

公开(公告)号：US09833861B2

公开(公告)日：2017-12-05

申请号：US15025633

申请日：2014-09-29

Applicant: JFE Steel Corporation

Inventor： Koichi Taniguchi ,  Muneo Matsushita ,  Rinsei Ikeda

IPC: B23K20/12 ,  B23K20/227 ,  C21D9/50 ,  C21D1/42 ,  B23K101/18 ,  B23K103/04

CPC classification number: B23K20/1235 ,  B23K20/1205 ,  B23K20/122 ,  B23K20/1225 ,  B23K20/227 ,  B23K2101/18 ,  B23K2103/04 ,  C21D1/42 ,  C21D9/50 ,  C21D9/505 ,  Y02P10/253

Abstract: A friction stir welding method for welding steel sheets together includes a heating device disposed ahead of a rotating tool in an advancing direction that preheats an unwelded portion before the welding thereof by the rotating tool and at the time of preheating, the surface temperature distribution in a direction perpendicular to the advancing direction in a position at which the welding by the rotating tool is initiated is set such that given that TAc1 is the Ac1 point of a steel sheet, the maximum temperature (TU) thereof is 0.6×TAc1

公开(公告)号：US20170341187A1

公开(公告)日：2017-11-30

申请号：US15637928

申请日：2017-06-29

Applicant: ARCELORMITTAL

Inventor： Laurent Cretteur ,  Qingdong Yin ,  Francis Schmit ,  Wolfram Ehling

IPC: B23K31/02 ,  B23K26/60 ,  B23K26/32 ,  B23K35/02 ,  B23K35/30 ,  B23K35/38 ,  B32B15/01 ,  C21D1/673 ,  C22C38/18 ,  C22C38/04 ,  C21D9/50 ,  C21D9/48 ,  C23C28/02 ,  B23K101/34 ,  B23K103/08 ,  B23K103/00

CPC classification number: B23K31/02 ,  B23K26/32 ,  B23K26/60 ,  B23K35/0261 ,  B23K35/3053 ,  B23K35/3073 ,  B23K35/383 ,  B23K2101/34 ,  B23K2103/08 ,  B23K2103/50 ,  B32B15/012 ,  C21D1/673 ,  C21D9/48 ,  C21D9/50 ,  C21D9/505 ,  C21D2211/001 ,  C21D2211/008 ,  C21D2221/01 ,  C21D2221/02 ,  C21D2251/02 ,  C22C38/04 ,  C22C38/18 ,  C23C28/021 ,  C23C28/023 ,  Y10T403/479

Abstract: 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.

公开(公告)号：US09533377B2

公开(公告)日：2017-01-03

申请号：US14364571

申请日：2012-12-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takashi Hamada ,  Tsuyoshi Kato ,  Kazuo Aoyama

IPC: B23K10/00 ,  B23K31/00 ,  B23K9/095 ,  B23K9/32 ,  B23K37/02 ,  B23K31/12 ,  B23K9/12 ,  C21D9/50

CPC classification number: B23K31/003 ,  B23K9/095 ,  B23K9/12 ,  B23K9/32 ,  B23K10/00 ,  B23K10/003 ,  B23K10/006 ,  B23K31/00 ,  B23K31/125 ,  B23K37/0235 ,  B23K2101/001 ,  C21D9/50 ,  C21D9/505 ,  Y10S901/03 ,  Y10S901/09 ,  Y10S901/42

Abstract: A weld bead shaping apparatus including: a gouging torch for gouging an object to be shaped; a shape sensor for measuring a shape of the object; a slider apparatus and an articulated robot for driving the gouging torch and shape sensor; an image processing apparatus; and a robot controlling apparatus. The image processing apparatus includes: a shape data extracting unit extracting shape data of the object, from a measurement result obtained by the shape sensor; and a weld reinforcement shape extracting/removal depth calculating unit calculating a weld reinforcement shape of the weld bead from a difference between the shape data and a preset designated shape of the object, and calculating a removal depth by which gouging is performed, based on the weld reinforcement shape. The robot controlling apparatus controls the slider apparatus, the articulated robot, and the gouging torch based on the weld reinforcement shape and the removal depth.

Abstract translation: 一种焊道成形设备，包括：用于刨削要成形的物体的气刨手电筒; 用于测量物体的形状的形状传感器; 用于驱动气刨和形状传感器的滑块装置和铰接机器人; 图像处理装置; 和机器人控制装置。 图像处理装置包括：形状数据提取单元，根据由形状传感器获得的测量结果提取对象的形状数据; 以及焊接加固形状的取出深度计算单元，根据形状数据和对象的预先设定的指定形状之间的差来计算焊道的焊接加强形状，并根据 焊接加固形状。 机器人控制装置基于焊接加强形状和去除深度来控制滑块装置，铰接式机器人和气刨手电筒。

公开(公告)号：US09499873B2

公开(公告)日：2016-11-22

申请号：US14422496

申请日：2013-12-03

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Naoki Saitoh ,  Mitsuru Sawamura ,  Katsumi Kurebayashi ,  Yasunori Takahashi ,  Takumi Miyake

IPC: C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C21D1/30 ,  C21D8/02 ,  C22C38/00 ,  C21D6/00 ,  C21D9/50 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/50 ,  C21D9/46

CPC classification number: C21D1/30 ,  C21D6/004 ,  C21D8/02 ,  C21D9/46 ,  C21D9/50 ,  C21D9/505 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54 ,  Y10T428/12

Abstract: In a steel plate according to the present invention, a chemical composition is within a predetermined range, an α value is 0.13 to 1.0 mass %, a β value is 8.45 to 15.2, an yield strength is 670 to 870 N/mm2, a tensile strength is 780 to 940 N/mm2, an average grain size at ½t of the steel plate is 35 μm or less, and a plate thickness is 25 to 200 mm. In the steel plate according to the present invention, in a case where SR is performed on the steel, a charpy absorbed energy at −40° C. in an area in which SR is performed may be 100 J or more.

Abstract translation: 在根据本发明的钢板中，化学组成在预定范围内，α值为0.13〜1.0质量％，β值为8.45〜15.2，屈服强度为670〜870N / mm2，拉伸强度 强度为780〜940N / mm 2，钢板的平均粒度为½t为35μm以下，板厚为25〜200mm。 在根据本发明的钢板中，在钢上进行SR的情况下，在执行SR的区域中在-40℃下观察到的夏比吸收能量可以为100J以上。

公开(公告)号：US20160312324A1

公开(公告)日：2016-10-27

申请号：US15204681

申请日：2016-07-07

Applicant: Buffalo Armory, LLC

Inventor： John BATISTE ,  Richard CLARE ,  Jack HEINZ ,  Brent NICHOLSON ,  Pete ZDJELAR

IPC: C21D9/00 ,  C21D1/18 ,  C22C38/44 ,  C22C38/04 ,  B23K37/04 ,  C22C38/00 ,  F42B33/14 ,  F42B12/04 ,  B23K10/00 ,  B23K31/02 ,  C21D6/00 ,  C22C38/02

CPC classification number: C21D9/0068 ,  B23K10/00 ,  B23K31/02 ,  B23K37/0211 ,  B23K37/0408 ,  B23K2101/16 ,  B23K2101/18 ,  B23K2103/04 ,  C21D1/18 ,  C21D1/22 ,  C21D1/42 ,  C21D1/78 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D9/42 ,  C21D9/505 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  F42B12/04 ,  F42B33/14 ,  Y02P10/253

Abstract: A method for forming and treating a steel article of a high strength and ductile alloy. The method includes the steps of providing a starting steel composition for the steel article, preheating the composition, heating the starting material to a peak temperature range in less than forty seconds, holding the heated steel composition at the peak temperature range for between two and sixty seconds, quenching the heated steel composition from the peak temperature range to below 177° C. (350° F.) at a temperature rate reduction of 200 to 3000° C./sec (360 and 5400° F./sec), removing residual quench media from the surface of the quenched steel composition, tempering the quenched steel composition at a temperature of 100 to 704° C. (212 to 1300° F.); and air cooling the tempered steel composition to less than 100° C. (212° F.) to form a steel having desired mechanical properties.

公开(公告)号：US20160230241A1

公开(公告)日：2016-08-11

申请号：US15023564

申请日：2014-12-11

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Takaaki FUKUSHI ,  Hideki HAMATANI ,  Masakazu OZAKI ,  Yuusuke ICHINOSE

IPC: C21D9/08 ,  B23K13/00 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/42 ,  C22C38/28 ,  C22C38/24 ,  C22C38/20 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D9/50 ,  C21D8/10 ,  B23K11/00

CPC classification number: C21D9/08 ,  B21C37/08 ,  B23K11/00 ,  B23K11/0873 ,  B23K13/00 ,  B23K2101/10 ,  B23K2103/04 ,  C21D8/10 ,  C21D8/105 ,  C21D9/50 ,  C21D9/505 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/24 ,  C22C38/28 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

Abstract: An electric resistance welded steel pipe for an oil well includes in terms of mass %: 0.02 to 0.14% of C, 0.05 to 0.50% of Si, 1.0 to 2.1% of Mn, 0.020% or less of P, 0.010% or less of S, 0.010 to 0.100% of Nb, 0.010 to 0.050% of Ti, 0.010 to 0.100% of Al, and 0.0100% or less of N. Contents of Cu, Ni, Cr, Mo, V, and B are 0 to 0.50%, 0 to 1.00%, 0 to 0.50%, 0 to 0.30%, 0 to 0.10%, and 0 to 0.0030%, respectively. Remainder consisting of Fe and unavoidable impurities. In a case that a full thickness specimen is subjected to a pipe axis direction tensile test, a tensile strength is 780 MPa or more, 0.2% proof stress/tensile strength is 0.80 or more, and 2% flow stress/tensile strength is from 0.85 to 0.98.

Abstract translation: 用于油井的电阻焊钢管以质量％计含有：0.02〜0.14％的C，0.05〜0.50％的Si，1.0〜2.1％的Mn，0.020％以下的P，0.010％以下的 S为0.010〜0.100％，Ti为0.010〜0.050％，Al为0.010〜0.100％，N为0.0100％以下。Cu，Ni，Cr，Mo，V，B的含量为0〜0.50％ ，0〜1.00％，0〜0.50％，0〜0.30％，0〜0.10％，0〜0.0030％。 余量由铁和不可避免的杂质组成。 在全轴试样进行管轴方向拉伸试验的情况下，拉伸强度为780MPa以上，0.2％屈服应力/拉伸强度为0.80以上，2％流动应力/拉伸强度为0.85 至0.98。