Method of manufacturing a welded can body

Details Method of manufacturing a welded can body Method of manufacturing a welded can body

1981-04-09

1983-09-13

Goldberg, Elliot A.

Electric heating

Metal heating

Of cylinders

219 83, B23K 1132

Patent

active

044044470

ABSTRACT:
A method of manufacturing a welded can body from tinplate or a tin-iron alloy plated steel sheet comprises overlapping the opposite marginal portions of a blank of the tinplate or the tin-iron plated steel sheet to form a can body preform having an overlapping portion, applying at least to the cut edges of the marginal portions of the blank a fluxing agent promoting wetting of steel with molten tin, and electrical resistance seam welding the overlapping portion in a nonoxidizing atmosphere by employing a pair of wire electrodes each covered by a layer of metallic tin on the surface thereof facing the overlapping portion. The welded portion has improved corrosion resistance, as an extruded weld portion and a remaining cut edge surface portion thereof are covered with tin transferred from the surfaces of the wire electrodes and/or the tinplate during the welding operation.

REFERENCES:
patent: 3504155 (1970-03-01), Opprecht et al.
patent: 4113580 (1978-09-01), Tsutsui et al.
patent: 4160892 (1979-07-01), Opprecht et al.

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