Title:
SPOT WELDING METHOD FOR ALUMINUM MATERIAL AND ALUMINUM MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/203375
Kind Code:
A1
Abstract:
This spot welding method for an aluminum material comprises: a processing step in which, in a plan view, a circular emboss expanded in a direction of superposition on a second aluminum plate side is formed at a position-to-be-welded of a first aluminum plate; an arrangement step in which positions-to-be-welded are superimposed while the expansion side of the emboss faces the second aluminum plate, and the positions-to-be-welded are arranged between a pair of electrodes; a pressing step in which the superimposed aluminum plates are pinched between the electrodes, and a central side excluding a peripheral edge of the emboss is pressed; and an electrification step of performing pressing and electrification. An electrode having a tip diameter larger than the diameter of a root part of the expansion part of the emboss is used.
Inventors:
YOSHIZAWA MAI
IWASE TETSU
IWASE TETSU
Application Number:
PCT/JP2020/012522
Publication Date:
October 08, 2020
Filing Date:
March 19, 2020
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
B23K11/11; B23K11/18
Foreign References:
| JP2017225990A | 2017-12-28 | |||
| JPH05285669A | 1993-11-02 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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