Method and apparatus for resistance welding coated sheet metal

Details Method and apparatus for resistance welding coated sheet metal Method and apparatus for resistance welding coated sheet metal

1996-08-02

1998-11-24

Mills, Gregory L.

Electric heating

Metal heating

For bonding with pressure

219 64, 219 83, 219110, B23K 1106, B23K 1124

Patent

active

058410945

ABSTRACT:
For welding sheet-metal blanks coated with electrically conductive material, the thickness of the coating is measured with a measurement device. The welding current source controls the welding current I as a function of the film thickness reading obtained, to keep the power input into the weld zone essentially constant.

REFERENCES:
patent: 3610862 (1971-10-01), Erlandson
patent: 4160892 (1979-07-01), Opprechet et al.
patent: 4404447 (1983-09-01), Kitamura et al.
patent: 4652714 (1987-03-01), Mergey et al.
patent: 4732026 (1988-03-01), Ban
Patent Abstracts of Japan; vol. 005, No. 132 (C-068), 22. Aug. 1981 & JP-A-56 065995 (Kawaski Steel Corp), 4. Jun. 1981.

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