Resistance welding electrode of chalcogene bearing copper alloy

Details Resistance welding electrode of chalcogene bearing copper alloy Resistance welding electrode of chalcogene bearing copper alloy

1990-04-27

1991-07-16

Roy, Upendra

Alloys or metallic compositions

Copper base

Sulfur, selenium, or tellurium containing

148 115C, 420497, C22C 900

Patent

active

050323580

ABSTRACT:
The invention relates to a material for electrodes to be used in resistance welding. The working life of electrodes, particularly of those to be used in the spot welding of coated sheets, is now relatively short. The invention introduces a new electrode material in the form of a copper alloy containing, in addition to the conventional ingredients, at least 20 ppm tellurium or other chalcogene, such as selenium or sulphur; owing to this new electrode material according to the invention, the service life of an electrode increases substantially.

REFERENCES:
patent: 2268940 (1942-01-01), Hensel
patent: 4492602 (1985-01-01), Lee et al.
patent: 4650650 (1987-03-01), Patel
patent: 4704253 (1987-11-01), Yamasaki et al.
patent: 4710349 (1987-12-01), Yamazaku et al.
patent: 4734254 (1988-03-01), Nippert
patent: 4818283 (1989-04-01), Grunthaler et al.
patent: 4859417 (1989-08-01), Innocenti

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