Method for spot welding galvanized sheet metal

Details Method for spot welding galvanized sheet metal Method for spot welding galvanized sheet metal

1979-03-14

1982-04-27

Goldberg, E. A.

Electric heating

Metal heating

For bonding with pressure

219118, B23K 1116

Patent

active

043272720

ABSTRACT:
The present invention is directed to an improved method and apparatus for effecting spot welds between superimposed sheets of galvanized metal. In accordance with the method, one of the electrodes is comprised of a consumable tip component, preferably a steel ball, whereby predictable and repeatable welding conditions are effected at each welding cycle. The invention is further directed to a method of effecting spot welds between galvanized sheets which includes the step of interposing between a conductive carrier electrode and the metal surface a consumable metallic increment having reduced contact area adapted to engage the galvanized sheet, the consumable component being compatible with the ferrous substrate beneath the galvanized layer.

REFERENCES:
patent: 1020991 (1912-03-01), Lachman
patent: 1592605 (1926-07-01), Ledwinka
patent: 2014090 (1935-09-01), Schnetzer
patent: 2623974 (1952-12-01), Prucha
patent: 3694614 (1972-09-01), Bihler

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