公开(公告)号：US20240181555A1

公开(公告)日：2024-06-06

申请号：US18285571

申请日：2022-03-07

Applicant: JFE STEEL CORPORATION

Inventor： Nao KAWABE ,  Chikaumi SAWANISHI ,  Katsutoshi TAKASHIMA ,  Koichi TANIGUCHI ,  Hiroshi MATSUDA ,  Daiki YAMAGISHI

IPC: B23K11/11 ,  B23K11/16 ,  B23K101/34 ,  B23K103/04

CPC classification number: B23K11/115 ,  B23K11/166 ,  B23K2101/34 ,  B23K2103/04

Abstract: A resistance spot welding method for joining two or more steel sheets including at least one zinc-coated steel sheet. The method includes a first current applying step and a second current applying step. The first current applying step involves forming a nugget having a nugget diameter of 3√t or more and 4.5√t or less by setting a current value I1 (kA) and a weld time, where t is a thickness of the thinnest steel sheet among the overlapping steel sheets. The second current applying step involves growing the nugget by repeating a cooling step for maintaining a zero-current state for 10 ms or more and less than 160 ms and a current applying step for applying a current for 20 ms or more and less than 200 ms at a current value I2 (kA) greater than or equal to the current value I1 (kA).

公开(公告)号：US11980961B2

公开(公告)日：2024-05-14

申请号：US16630177

申请日：2018-07-10

Applicant: BÖLLHOFF VERBINDUNGSTECHNIK GmbH

Inventor： Torsten Draht ,  Sergej Hartwig-Biglau

IPC: B23K11/16 ,  B21J15/00 ,  B23K11/00 ,  B23K20/02 ,  B23K101/00

CPC classification number: B23K11/16 ,  B21J15/00 ,  B23K11/002 ,  B23K11/0066 ,  B23K20/02 ,  B23K2101/006

Abstract: A welding auxiliary joining part with which a welding connection, more particularly a resistance welding connection, can be established between a first component A made of a poorly weldable material and a second component made of weldable material. The welding auxiliary joining part is distinguished by a cylindrical punch shaft that can be punchingly pressed into the first component A approximately rotation-free. The punch shaft has an element head at the head underside of which only one continuous circumferential clamping ring is arranged that projects axially in the direction of the punch shaft.

公开(公告)号：US20240058888A1

公开(公告)日：2024-02-22

申请号：US18270984

申请日：2021-12-24

Applicant: NIPPON STEEL CORPORATION

Inventor： Takuya MITSUNOBU ,  Hiroshi TAKEBAYASHI ,  Takehiro TAKAHASHI

IPC: B23K11/16 ,  B23K11/11 ,  B23K35/28

CPC classification number: B23K11/163 ,  B23K11/11 ,  B23K35/282 ,  B23K2103/04

Abstract: The present disclosure inhibits liquid metal embrittlement (LME) cracking in a welded joint obtained by spot welding a first steel sheet and a second steel sheet. In the welded joint of the present disclosure, a first plating layer is provided on a surface of the first steel sheet facing the second steel sheet, no plating layer is present on or a second plating layer is provided on a surface of the second steel sheet facing the first steel sheet, and a boundary plating layer is provided between the first steel sheet and the second steel sheet in a range of 0.5 mm from an end part of the corona bond toward an outside of the spot welded part. A higher tensile strength of a tensile strength of the first steel sheet and a tensile strength of the second steel sheet is 780 MPa or more, an area ratio of a η-Zn phase at the cross-section of the boundary plating layer is 5% or more, and the first plating layer and the second plating layer satisfy predetermined Relations I and II.

公开(公告)号：US11890694B2

公开(公告)日：2024-02-06

申请号：US16901765

申请日：2020-06-15

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yoshiaki Nakazawa ,  Tohru Okada ,  Yasuhiro Ito ,  Masanori Yasuyama ,  Yasunori Sawa

IPC: B23K11/16 ,  B23K11/11 ,  B23K11/30 ,  B23K11/31 ,  B23K35/02 ,  B23K101/00 ,  B23K101/18 ,  B23K103/04 ,  B23K101/28 ,  C22C38/38 ,  C22C38/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/06 ,  C22C38/04 ,  F16B5/08

CPC classification number: B23K11/16 ,  B23K11/115 ,  B23K11/3009 ,  B23K11/31 ,  B23K35/02 ,  B23K35/0205 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/38 ,  F16B5/08 ,  B23K2101/006 ,  B23K2101/18 ,  B23K2101/185 ,  B23K2101/28 ,  B23K2103/04

Abstract: There is provided a resistance spot welding apparatus including a first rod-shaped electrode body, second rod-shaped electrode body, first ring-shaped member, second ring-shaped member, first elastic body, and second elastic body. The first rod-shaped electrode body and second rod-shaped electrode body are arranged facing each other, the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member, the first elastic body is connected to an opposite side of first ring-shaped member to second rod-shaped electrode body side, the first rod-shaped electrode body and first ring-shaped member are not electrically connected to each other, the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member, the second elastic body is connected to an opposite side of second ring-shaped member to first rod-shaped electrode body side, and the second rod-shaped electrode body and second ring-shaped member are not electrically connected each other.

公开(公告)号：US20230330766A1

公开(公告)日：2023-10-19

申请号：US18296030

申请日：2023-04-05

Applicant: FUTABA INDUSTRIAL CO., LTD.

Inventor： Keigo YASUDA ,  Shota MUTO

IPC: B23K11/14 ,  B23K11/16

CPC classification number: B23K11/14 ,  B23K11/16

Abstract: Disclosed is a method for manufacturing a welded member in which a workpiece made of a high tensile material and a welding object are welded. The method includes welding the workpiece and the welding object such that welded portions are formed between the workpiece and the welding object by performing projection welding. The method also includes applying a cancellation stress to the welded member after the projection welding, so that a stress that is generated in the welded portions after the projection welding and acts in a direction to pull the welded portions close to each other is canceled.

公开(公告)号：US20230191512A1

公开(公告)日：2023-06-22

申请号：US18109911

申请日：2023-02-15

Applicant: Amada Co., Ltd. ,  Amada Machinery Co., Ltd.

Inventor： Kensaku MAEDA

IPC: B23D65/00 ,  B23K11/00 ,  B23K11/087 ,  B23K11/16 ,  B23K31/02 ,  B24B3/36 ,  B23P15/28

CPC classification number: B23D65/00 ,  B23K11/0073 ,  B23K11/087 ,  B23K11/16 ,  B23K31/025 ,  B24B3/36 ,  B23P15/28 ,  B23K2101/20

Abstract: A manufacturing apparatus of a ring-shaped band saw blade for manufacturing the ring-shaped band saw blade including a tooth tip to which a hard cutting tip is joined. The manufacturing apparatus includes a rotatory moving section that provides rotatory movement of the ring-shaped band saw blade including a body part having a band shape and a tooth part including a plurality of teeth formed on one side part of the body part; a surface polishing section that polishes an inner surface and an outer surface of the body part in the ring-shaped band saw blade in the rotatory movement provided by the rotatory moving section; and an end face polishing section that polishes an end face of the body part on a side opposite to the tooth part in the ring-shaped band saw blade in the rotatory movement provided by the rotatory moving section.

公开(公告)号：US20230151735A1

公开(公告)日：2023-05-18

申请号：US17529656

申请日：2021-11-18

Applicant: General Electric Company

Inventor： Suhas Prabhakar Vaze ,  Timothy Trapp ,  Scott Sager Campbell ,  Gregory Christopher Firestone ,  Jonathan David Mast ,  Timothy Vernon Stotler

IPC: F01D5/00 ,  B23K11/00 ,  B23K11/16 ,  B23K15/00 ,  B23P6/00 ,  F01D5/02 ,  F01D5/34 ,  F04D29/32

CPC classification number: F01D5/005 ,  B23K11/0026 ,  B23K11/16 ,  B23K15/0006 ,  B23K15/006 ,  B23K15/0093 ,  B23P6/002 ,  F01D5/02 ,  F01D5/34 ,  F04D29/324 ,  B23K2101/001

Abstract: An airfoil component for attaching to a cropped airfoil is provided. The cropped airfoil comprises a cropped airfoil attachment section and a cropped first side opposite a cropped second side, which each extend axially between a cropped first edge and a cropped second edge to define a cropped chord length. The airfoil component comprises a body having a component first side opposite a component second side. The body defines an attachment section for attaching the airfoil component to the cropped airfoil at the cropped airfoil attachment section. The attachment section extends axially between a component first edge and a component second edge to define a component chord length, and the attachment section is oversized with respect to the cropped airfoil attachment section such that the component chord length is longer than the cropped chord length. Systems and methods also are provided.

公开(公告)号：US11548087B2

公开(公告)日：2023-01-10

申请号：US16487930

申请日：2018-02-16

Applicant: OUTOKUMPU OYJ

Inventor： Christian Dömkes ,  Thomas Hündgen ,  Stefan Lindner

IPC: B23K3/047 ,  B23K26/323 ,  B23K11/06 ,  B23K11/16 ,  B32B15/01 ,  C23C4/02 ,  C23C4/08 ,  C23C4/10 ,  B23K11/11 ,  B23K11/20 ,  C23C4/06 ,  C23C4/18 ,  B23K11/10 ,  B23K11/14 ,  B23K103/20 ,  B23K103/04

Abstract: A method for joining of at least two materials, non-weldable directly to each other with thermal joining processes in a lap joint configuration includes a two step sequence including a first step to apply a thermomechanical or mechanical surface protection layer on the surface of a (stainless) steel substrate and a second step where, a thermal joining process is used to weld the sprayed layer with an applied aluminum sheet without having brittle intermetallic phases in the whole material configuration.

公开(公告)号：US20220355410A1

公开(公告)日：2022-11-10

申请号：US17307277

申请日：2021-05-04

Applicant: GM Global Technology Operations LLC

Inventor： Huaxin Li ,  MingFeng Shi ,  Jatinder Paul Singh ,  Dale A. Gerard

IPC: B23K11/16 ,  B23K11/11 ,  B23K11/24 ,  B23K35/30 ,  B23K35/02 ,  C22C19/03

Abstract: A system for increasing joint strength and reducing embrittlement in a resistance spot weld of metal workpieces is disclosed. The system comprises a stackup of first and second metal workpieces, and an interface member disposed between the first and second metal workpieces. The interface member comprises a peripheral wall defining a hollow inner portion. The peripheral wall has a first open end extending to a second open end. The first open end is in contact with the first metal workpiece defining a first weld portion thereon. The second open end is in contact with the second metal workpiece defining a second weld portion thereon. The system further comprises a first electrode configured to contact the first metal workpiece to heat the peripheral wall at the first weld portion and join the first metal workpiece with the first open end of the peripheral wall. The system further comprises a second electrode configured to contact the second metal workpiece to heat the peripheral wall at the second weld portion and join the second metal workpiece with the second open end of the peripheral wall to define a weld joint. The system further comprises a power source configured to power the first and second electrodes and a controller configured to control the power to the first and second electrodes to heat the peripheral wall.

公开(公告)号：US11484965B2

公开(公告)日：2022-11-01

申请号：US16675055

申请日：2019-11-05

Applicant: ORIGIN ELECTRIC COMPANY, LIMITED

Inventor： Yasuo Kadoya ,  Yuki Oshino

IPC: B23K11/16 ,  B23K11/02 ,  B23K11/24 ,  B23K11/36 ,  B23K31/00 ,  C21D1/42 ,  C21D9/50 ,  B23K103/04 ,  B23K103/06

Abstract: To provide a method and apparatus for manufacturing a joined member that inhibit occurrence of cracks in a joined member even when the joined portion is quenched when members are welded together. The method includes placing the first member D and the second member E with a joint target portion Df and a joint target portion Ef being in contact with each other, welding the joint target portions by heating, subjecting the first member D after the welding to a process for inhibiting occurrence of cracks, and tempering a portion where the first and second members have been welded to each other by electromagnetic heating. The apparatus includes a first electrode 11 to contact with the first member D; a second electrode 12 to contact with the second member E; and an induction heating coil 23 for performing induction heating of a portion where a joint target portions Df and Ef have been contacted and joined to each other, and the induction heating coil 23 is placed between the two electrodes 11 and 12 when the induction heating is performed.