Invention Grant
- Patent Title: Method of resistance spot welding and resistance spot welding apparatus
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Application No.: US17344047Application Date: 2021-06-10
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Publication No.: US12246388B2Publication Date: 2025-03-11
- Inventor: Shota Muto
- Applicant: FUTABA INDUSTRIAL CO., LTD.
- Applicant Address: JP Okazaki
- Assignee: FUTABA INDUSTRIAL CO., LTD.
- Current Assignee: FUTABA INDUSTRIAL CO., LTD.
- Current Assignee Address: JP Okazaki
- Agency: Withrow + Terraova, PLLC
- Agent Vincent K. Gustafson
- Priority: JP2020-121332 20200715
- Main IPC: B23K11/11
- IPC: B23K11/11 ; B23K11/16 ; B23K11/30 ; B23K11/36

Abstract:
The present disclosure provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the degrees of tensile strength. One aspect of the present disclosure provides a method of resistance spot welding. The method comprises welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes welding while compressing a high-tensile steel plate among the two or more steel plates in a direction intersecting a direction of a thickness of the high-tensile steel plate. The high-tensile steel plate has a tensile strength higher than a tensile strength of another steel plate among the two or more steel plates.
Public/Granted literature
- US20220016726A1 METHOD OF RESISTANCE SPOT WELDING AND RESISTANCE SPOT WELDING APPARATUS Public/Granted day:2022-01-20
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