Electric heating – Metal heating – For bonding with pressure
Patent
1974-02-12
1976-11-02
Reynolds, Bruce A.
Electric heating
Metal heating
For bonding with pressure
219 92, B23K 1110
Patent
active
039899195
ABSTRACT:
The invention relates to welding of sheet metal covered with non-metallic layers, and relates more particularly to a method for the spot- or roller seam- welding of sheet metal covered with non-metallic layers by removing the layer from the zones to be welded and subsequently applying a rust-protective layer over the welded zones, wherein on the zones to be welded circular or strip-shaped parts of the covering layer are mechanically removed by milling, rasping or grinding; the metallic zones of the sheet metal thus stripped bare are interwelded by means of opposed electrodes; and finally on the welded zones circular or strip-shaped parts, respectively, of a layer are applied by cementing, spraying or painting, for the formation of a uniform covering layer. The invention relates also more particularly to a machine for carrying out the above method and comprising in combination: an upright structure; a transport track for the sheet metal mounted in said structure; an upper and a lower rail arranged transversely of said track and vertically movably on said structure; a series of stripping machines attached to said rails; and means capable of pressing said stripping machines on the sheet metal lying on said transport track.
REFERENCES:
patent: 1020991 (1912-03-01), Lachman
patent: 1039137 (1912-09-01), Johnson
patent: 1294679 (1919-02-01), Lachman
patent: 2253375 (1941-08-01), Henninger
patent: 2487462 (1949-11-01), Meyer
patent: 2747154 (1956-05-01), Abrams
patent: 3067488 (1962-12-01), Bennett et al.
patent: 3233073 (1966-02-01), Ruetschi
patent: 3555964 (1971-01-01), Fleming
patent: R22108 (1942-06-01), Crecca
Becker Otto Alfred
Wefers Johann Karl
Radde Erich M. H.
Reynolds Bruce A.
SAID Otto Alfred Becker by said Johann Karl Wefers
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