Laser welding method

Details Laser welding method Laser welding method

1991-08-29

1993-02-02

Albritton, C. L.

Electric heating

Metal heating

By arc

21912184, B23K 2600

Patent

active

051839920

ABSTRACT:
A method of laser welding steel sheets that have a thin corrosion protective coating of zinc. The steel sheets are positioned vertically. A laser beam, which is positioned normal to the sheets is applied to the sheets to melt the material of the sheets and create a weld. During welding, the sheets and laser beam are moved vertically relative to each other such that laser heating of the material creates a cavity. Liquid or molten material flows vertically downwardly by gravity to elongate the cavity and thereby facilitate the escape of zinc vapors from the cavity.

REFERENCES:
patent: 4642446 (1987-02-01), Pennington
patent: 4682002 (1987-07-01), Delle Piane et al.
patent: 4734550 (1988-03-01), Imamura et al.
patent: 4745257 (1988-05-01), Rito et al.
patent: 4916284 (1990-04-01), Petrick

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