SPOT-WELDED JOINT AND MANUFACTURING METHOD THEREFOR

WIPO Patent Application WO/2024/041463

A1

A spot-welded joint and a manufacturing method therefor. The spot-welded joint comprises a first workpiece (1), a second workpiece (2), and a weld nugget used for fixedly connecting the first workpiece (1) and the second workpiece (2). At least one of the outer surface of the first workpiece (1) and the outer surface of the second workpiece (2) comprises a basic surface and an indentation, wherein the indentation comprises a first surface (111) which is located in the center and protrudes outwards and a second surface (112) which is located on the periphery of the first surface (111) and recessed inwardly, and the maximum distance h1 between the first surface (111) and the basic surface is smaller than the maximum distance h2 between the second surface (112) and the basic surface. The edge welding of the spot-welded joint is firmer, and the center is thinner, so that the generation of surface cracks and the formation of internal defects are reduced, thereby improving the welding spot strength.

YANG SHANGLU (CN)
WANG YANJUN (CN)

PCT/CN2023/113830

February 29, 2024

August 18, 2023

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SHANGHAI INST OPTICS & FINE MECH CAS (CN)

B23K11/11; B23K11/00; B23K11/10; B23K11/30; B23K35/00

CN115255587A	2022-11-01
CN116197509A	2023-06-02
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CN215658527U	2022-01-28
CN110369848A	2019-10-25
CN114101883A	2022-03-01
CN105081545A	2015-11-25
CN112570867A	2021-03-30
CN112916992A	2021-06-08
JP2007130685A	2007-05-31
JP2020078811A	2020-05-28
JPH07148580A	1995-06-13
KR20160002450A	2016-01-08
US20030192863A1	2003-10-16
US20090218323A1	2009-09-03

XU & PARTNERS, LLC. (CN)

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