Method and apparatus for welding thin metal sheets

Details Method and apparatus for welding thin metal sheets Method and apparatus for welding thin metal sheets

1985-08-20

1988-07-05

Paschall, M. H.

Electric heating

Metal heating

By arc

219 912, 219 87, 21912163, 21912114, B23K 2600

Patent

active

047556528

ABSTRACT:
There is described a method for welding thin metal sheets (A, B) by the localized heating of limited juxtaposed zones of the metal sheets to be welded to cause their fusion and to form spot welds (S). In each weld zone, the metal sheets (A, B) are heated and fused along a closed line so that each weld spot (S) has a substantially annular configuration in cross section in a plane parallel to the metal sheets.
This welding may be achieved for example with the use of a laser (2) produced by a laser source (1), or by electrical resistance welding with a pair of opposed electrodes (6, 7) the ends whereof which are intended to grip the metal sheets (A, B) are suitably shaped.

REFERENCES:
patent: 1281454 (1918-10-01), White
patent: 2379187 (1945-06-01), Richards
patent: 3474219 (1969-10-01), Steigerwald et al.
patent: 3619550 (1971-11-01), Matthews
patent: 3969604 (1976-07-01), Baardsen
patent: 4237363 (1980-12-01), Lemelson
patent: 4354090 (1982-10-01), Nilsen
patent: 4626653 (1986-12-01), Sciaky et al.

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