B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/57
B23K 9/20 (2006.01) B23K 11/00 (2006.01)
Patent
CA 1059220
Abstract of the Disclosure Relates to a method of and apparatus for electric welding through insulation coatings, such as paint, on metallic surfaces by directing a vapor jet of paint solvent upon a selected area of a painted metal surface to first soften and then vaporblast the softened paint away from the area to expose a bare spot of the metal surface for welding. Then, before the softened paint reflows back over the bare spot as a result of the discontinuance of the vapor jet, quickly bringing a metal part into welding range of the bare spot and welding the two metal parts together. Following the welding operation, the softened paint coating reflows over the exposed welded juncture and hardens to form a protective film thereover.
261608
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