公开(公告)号：US20240351133A1

公开(公告)日：2024-10-24

申请号：US18683510

申请日：2022-07-21

申请人： JFE STEEL CORPORATION ,  KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： Daiki YAMAGISHI ,  Katsutoshi TAKASHIMA ,  Hiroshi MATSUDA ,  Ryoji OHASHI ,  Yoshitaka MURAMATSU ,  Takuya FUKUDA

IPC分类号： B23K20/12 ,  B23K101/18 ,  B23K101/34 ,  B23K103/04

CPC分类号： B23K20/12 ,  B23K2101/18 ,  B23K2101/34 ,  B23K2103/04

摘要： Provided is a friction stir spot welded joint having high joint strength even in the case where a high strength steel sheet, particularly a steel sheet with a tensile strength (TS) of 980 MPa or more, is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape, microstructure, and hardness of a welded portion are appropriately controlled simultaneously.

公开(公告)号：US12115594B2

公开(公告)日：2024-10-15

申请号：US17183495

申请日：2021-02-24

申请人： FURUKAWA ELECTRIC CO., LTD.

发明人： Tomomichi Yasuoka ,  Takashi Kayahara ,  Ryosuke Nishii ,  Koji Kirikae ,  Keigo Matsunaga ,  Takashi Shigematsu

IPC分类号： B23K26/067 ,  B23K26/06 ,  B23K26/08 ,  B23K26/21 ,  B23K26/32 ,  B23K103/04 ,  B23K103/10

CPC分类号： B23K26/067 ,  B23K26/0648 ,  B23K26/08 ,  B23K26/21 ,  B23K26/32 ,  B23K2103/04 ,  B23K2103/10

摘要： A welding method includes: emitting laser beam toward a workpiece including a metal to melt and weld a part of the workpiece, the part being where the laser beam has been emitted to. Further, the laser beam includes a main power region and at least one auxiliary power region, a power of the main power region is larger than a power of each of the at least one auxiliary power region, and a ratio between the power of the main power region and the total of powers of the at least one auxiliary power region is in a range of 144:1 to 1:9.

公开(公告)号：US20240316693A1

公开(公告)日：2024-09-26

申请号：US18598863

申请日：2024-03-07

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takeshi YAMAMOTO ,  Ryuta MATSUO

IPC分类号： B23K26/21 ,  B23K26/06 ,  B23K26/082 ,  B23K101/18 ,  B23K103/04

CPC分类号： B23K26/21 ,  B23K26/0626 ,  B23K26/082 ,  B23K2101/18 ,  B23K2103/04

摘要： A laser welding method for irradiating a plurality of stacked metal plates in an upright position with a laser beam to weld the plurality of stacked metal plates is provided. The laser welding method includes irradiating the plurality of metal plates with the laser beam to form a circular molten pool and scanning the laser beam once around an outer periphery of the molten pool to enlarge the molten pool. In the enlarging of the molten pool, a scanning start point of the laser beam is set within a range from 135 degrees to 315 degrees in a scanning direction of the laser beam, with 0 degrees directly above the molten pool in a vertical direction.

公开(公告)号：US20240316683A1

公开(公告)日：2024-09-26

申请号：US18579606

申请日：2022-06-21

申请人： ArcelorMittal

发明人： Zhifen WANG ,  Alexis CHIOCCA

IPC分类号： B23K11/16 ,  B23K11/11 ,  B23K11/20 ,  B23K11/24 ,  B23K103/04 ,  B23K103/10

CPC分类号： B23K11/163 ,  B23K11/115 ,  B23K11/20 ,  B23K11/24 ,  B23K2103/04 ,  B23K2103/10

摘要： A welding method for the manufacture of an assembly of at least two steel substrates spot welded together through at least one spot welded joint, including A. provision of substrates including a press hardened steel part obtained by press hardening of a steel sheet coated with an aluminium based coating, B. application of a spot-welding cycle with welding electrodes and a spot-welding power source applying a current, the cycle including: at least three pulsations, each having the same maximum pulsation current (Cp) applied through the substrates, each pulsation duration p being identical and set from 20 to 60 ms, each pulsation being followed by the same cooling time c set from 30 to 50 ms, wherein the welding parameter Wp value is at least 0.8, Wp being defined as Wp=(t×c)/p t being the average thickness of the substrate in mm, c being the cooling time in ms, p being the pulsation duration in ms.

公开(公告)号：US12091723B2

公开(公告)日：2024-09-17

申请号：US18011090

申请日：2021-06-30

申请人： JFE STEEL CORPORATION

发明人： Shinsuke Komine ,  Tatsuya Nakagaito ,  Kentaro Sato ,  Tomohiro Sakaidani

IPC分类号： C22C33/04 ,  B23K11/00 ,  B23K11/11 ,  B23K11/16 ,  B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C21D1/18 ,  C21D1/19 ,  C21D1/25 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/00 ,  C23C28/02 ,  C23C30/00 ,  C25D3/22 ,  C25D5/36 ,  C25D5/50 ,  C25D7/06 ,  B23K101/00 ,  B23K101/28 ,  B23K101/34 ,  B23K103/04

CPC分类号： C21D9/46 ,  B23K11/0026 ,  B23K11/11 ,  B23K11/166 ,  B32B15/013 ,  B32B15/015 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/18 ,  C21D1/185 ,  C21D1/19 ,  C21D1/25 ,  C21D6/001 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/40 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C23C2/02 ,  C23C2/0224 ,  C23C2/06 ,  C23C2/28 ,  C23C2/285 ,  C23C2/29 ,  C23C2/40 ,  C23C28/021 ,  C23C28/025 ,  C23C28/3225 ,  C23C30/00 ,  C23C30/005 ,  C25D3/22 ,  C25D5/36 ,  C25D5/50 ,  C25D7/0614 ,  B23K2101/006 ,  B23K2101/28 ,  B23K2101/34 ,  B23K2103/04 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  Y10T428/12792 ,  Y10T428/12951 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972

摘要： A galvanized steel sheet includes: a steel sheet having a chemical composition satisfying an equivalent carbon content Ceq of 0.35% or more and less than 0.60%, and a specified steel microstructure; and a galvanized layer on a surface of the steel sheet. The retained austenite has a solute C content of 0.6% or more by mass, and retained austenite grains with an aspect ratio of less than 2.0 constitute 50% or more of all retained austenite grains. In 90-degree bending at a curvature radius/thickness ratio of 4.2 in a rolling (L) direction with respect to an axis extending in a width (C) direction, an L cross section in a 0 to 50 μm region from a surface of the steel sheet on a compression side has a number density of voids of 1000/mm2 or less, and the galvanized steel sheet has a tensile strength of 590 MPa or more.

公开(公告)号：US12085161B2

公开(公告)日：2024-09-10

申请号：US16837346

申请日：2020-04-01

申请人： AMERICAN AXLE & MANUFACTURING, INC.

发明人： Anoop Vasu ,  Shizhu Xing ,  Jifa Mei ,  Chih-Hung Chung ,  Ravi S. Desai

IPC分类号： B60B35/00 ,  F16H57/00 ,  B23K26/28 ,  B23K101/00 ,  B23K103/04 ,  B23K103/06

CPC分类号： F16H57/0025 ,  B23K26/28 ,  B23K2101/008 ,  B23K2103/04 ,  B23K2103/06

摘要： A weldment includes a first component, a second component, and a weld joint coupling the first and second components together. The weld joint forms a heat affected zone in the first component and creates residual tensile stress in the first component. The first and second components cooperate to define a pocket configured to position a highest magnitude of the residual tensile stress in the first component in a location that is outside of the heat affected zone of the first component.

公开(公告)号：US20240269770A1

公开(公告)日：2024-08-15

申请号：US18007496

申请日：2021-10-28

申请人： HARMONIC DRIVE SYSTEMS INC.

发明人： Morihiko YAMAGUCHI

IPC分类号： B23K26/082 ,  B23K26/26 ,  B23K103/04

CPC分类号： B23K26/082 ,  B23K26/26 ,  B23K2103/04

摘要： In a laser welding method for welding a first metal member and a second metal member, a first wobbling process is carried out in which a first laser beam is directed in a first scanning pattern along a butt-joining line and a first welded part is formed. A second wobbling process is subsequently performed in which a second laser beam is directed in a second scanning pattern along the surface of the first welded part formed through the first wobbling process and a second welded part that is wider and shallower than the first welded part is formed overlapping the first welded part. A welded part in which delayed cracking can be prevented or suppressed is thus formed.

公开(公告)号：US20240261899A1

公开(公告)日：2024-08-08

申请号：US18605250

申请日：2024-03-14

申请人： Hyundai Steel Company

发明人： Chang Yong Lee ,  Jeong Seok Kim ,  Sung Ryul Kim ,  Tae Woo Kwon

IPC分类号： B23K26/322 ,  B23K35/02 ,  B23K103/04 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC分类号： B23K26/322 ,  B23K35/0261 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  B23K2103/04

摘要： Disclosed are an aluminum-coated blank, a manufacturing method thereof, and an apparatus for manufacturing the same. The blank includes two or more aluminum-coated steel sheets connected together by a joint, each of the steel sheets including: a base steel sheet including 0.01-0.5 wt % of carbon, 0.01-1.0 wt % of silicon, 0.5-3.0 wt % of manganese, greater than 0 but not greater than 0.05 wt % of phosphorus, greater than 0 but not greater than 0.01 wt % of sulfur, greater than 0 but not greater than 0.1 wt % of aluminum, greater than 0 but not greater than 0.001 wt % of nitrogen, and the balance of iron and other inevitable impurities; and a coating layer including aluminum and formed on at least one surface of the base steel sheet.

公开(公告)号：US20240254599A1

公开(公告)日：2024-08-01

申请号：US17926993

申请日：2022-09-30

申请人： Institute of New Materials, Guangdong Academy of Sciences

发明人： Xingchen Yan ,  Cheng Chang ,  Bingwen Lu ,  Changguang Deng ,  Min Liu

IPC分类号： C22C30/00 ,  B22F9/10 ,  B23K26/34 ,  B23K35/30 ,  B23K103/04

CPC分类号： C22C30/00 ,  B22F9/10 ,  B23K26/34 ,  B23K35/3086 ,  B23K2103/04

摘要： Disclosed are a high-entropy alloy (HEA) coating and a preparation method and use thereof. Laser cladding is conducted with an HEA powder to obtain the HEA coating, where the HEA is a FeCoCrNiAl0.5Ti0.5 alloy, and the HEA includes the following chemical components in atomic percentage: Al: 10.01% to 12.30%, Co: 18.1% to 22.5%, Cr: 18.05% to 20.12%, Fe: 18.77% to 21.02%, Ni: 19.21% to 20.99%, and Ti: 8.43% to 11.5%. The HEA material with high hardness and wear resistance provided by the present disclosure is suitable for laser cladding of a surface of a precision mold, an offshore component, or a drilling rod. A powder is prepared from the above alloy components and then prepared into a corresponding HEA coating with high strength, high hardness, and prominent wear resistance through laser cladding. The material has prominent weldability and is a special nickel-based HEA material suitable for laser additive manufacturing.

公开(公告)号：US20240207965A1

公开(公告)日：2024-06-27

申请号：US18412885

申请日：2024-01-15

申请人： Harbin Welding Institute Limited Company

发明人： Zhanli YANG ,  Dong DU ,  Shanbao ZHANG ,  Kai XU ,  Bing DU ,  Yajun WU ,  Qilong TANG ,  Zhongwang GONG ,  Debin BAI ,  Zekun YANG ,  Xiucheng XIAO ,  Dakui FEI ,  Guangnan ZHAO ,  Wei LI ,  Yongbo YANG

IPC分类号： B23K9/10 ,  B23K9/025 ,  B23K9/18

CPC分类号： B23K9/105 ,  B23K9/0253 ,  B23K9/18 ,  B23K2103/04

摘要： The present disclosure relates to electro-conduction devices and methods for submerged arc welding of straight-seam steel pipes and in particular to a lateral electro-conduction device and method for multi-wire submerged arc inner/outer welding of a straight-seam steel pipe. The present disclosure aims to overcome the problem of poor closing of the electromagnetic field resulting from the existing negative-pole electro-conduction mechanism and the problem of unstable welding process resulting from bending deformation in the steel pipe welding process. The device includes: a floating surface contact electro-conduction device, capable of forming a surface contact with an outer surface of the straight-seam steel pipe; a lateral electro-conduction brush device, including multiple electro-conduction brushes and electrically connected with the floating surface contact electro-conduction device; a lateral electro-conduction metal plate, electrically connected with a negative-pole wire harness of a welding machine and electrically connected with the lateral electro-conduction brush device. Therefore, an electro-conduction circuit is formed by the negative-pole wire harness, the lateral electro-conduction metal plate, the lateral electro-conduction brush device, the floating surface contact electro-conduction device, the straight-seam steel pipe and a welding wire electrode.