Laser welding of galvanized steel

Details Laser welding of galvanized steel Laser welding of galvanized steel

1985-10-03

1987-02-10

Paschall, M. H.

Electric heating

Metal heating

By arc

219121ED, 219121LM, 219137WM, 428659, B23K 2600

Patent

active

046424466

ABSTRACT:
An improved method is disclosed for producing a welded joint between galvanized steel sheet members utilizing a laser beam or the like. Surface regions of the galvanized member in the weld zone are selectively pretreated to remove the zinc coating and apply a nickel-base coating. The nickel coating avoids the vaporization problems associated with zinc, while providing suitable corrosion protection in the welded joint.

REFERENCES:
patent: 3798406 (1974-03-01), Becker
patent: 3969604 (1976-07-01), Baardsen
patent: 4416737 (1983-11-01), Austin et al.
patent: 4480166 (1984-10-01), Leech
Metals Handbook, vol. 6, pp. 793-803, "Welding Brazing and Soldering".

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