Apparatus for spot welding galvanized sheet metal

Details Apparatus for spot welding galvanized sheet metal Apparatus for spot welding galvanized sheet metal

1981-02-11

1983-05-24

Goldberg, Elliot A.

Electric heating

Metal heating

For bonding with pressure

219 94, 219 98, 219118, B23K 1116

Patent

active

043852220

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 subtrate beneath the galvanized layer.

REFERENCES:
patent: 1592605 (1926-07-01), Ledwinka
patent: 2014090 (1935-09-01), Schnetzer
patent: 2623974 (1952-12-01), Prucha
patent: 3526744 (1970-09-01), Ehrlich
patent: 3526793 (1970-09-01), Spisak

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