Edward D Pennington

US Patent:

46424466, Feb 10, 1987

Filed:

Oct 3, 1985

Appl. No.:

6/783687

Inventors:

Edward J. Pennington - Pleasanton CA

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B23K 2600

US Classification:

219121LD

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.