Patent ID: 11890701
Assignee: SHANGHAI INSTITUTE OF OPTICS AND FINE MECHANICS, CHINESE ACADEMY OF SCIENCES
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A method of resistance spot welding, which comprises:
(a) providing a first aluminum alloy workpiece and a second aluminum alloy workpiece;
(b) operating welding gun arms to make a first welding electrode cap and a second welding electrode cap contact with the first aluminum alloy workpiece and the second aluminum alloy workpiece, respectively; and
(c) applying pressure and current through the welding gun arm and the first and second electrode caps, so that contacting parts of the first and second workpieces are melted and a spot welding joint is formed,
wherein the first welding electrode cap and/or the second welding electrode cap is an electrode cap for resistance spot welding of claim 1.