Electrical resistance welding of coated sheet metals

Details Electrical resistance welding of coated sheet metals Electrical resistance welding of coated sheet metals

1974-03-22

1976-10-26

Reynolds, Bruce A.

Electric heating

Metal heating

For bonding with pressure

219 92, B23K 1110

Patent

active

039885623

ABSTRACT:
The invention provides a method for the electrical resistance welding of coated sheet metals, in which welding current is fed to at least one of the coated sheets indirectly through the metal layer thereof and contact is established between blanc areas thereof to be welded to each other, wherein annular or elongated knife edges are provided at the welding area of the sheet metal to be welded on or on intermediate welding pieces, and cavities are produced by embossing and/or by milling, for preserving an outer coating undamaged by the heat of welding.

REFERENCES:
patent: 1294679 (1919-02-01), Lachman
patent: 2253375 (1941-08-01), Henninger
patent: 2404149 (1946-07-01), Trinkle
patent: 2747154 (1956-05-01), Abrams
patent: 3067488 (1962-12-01), Bennett et al.
patent: 3555964 (1971-01-01), Fleming
patent: 3614375 (1971-10-01), Becker

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