Laser welding method and device

Details Laser welding method and device Laser welding method and device

2008-01-15

2008-01-15

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121640

Reexamination Certificate

active

07319205

ABSTRACT:
Electrodes2, 3are contact with an uppermost work W1and energized with electricity so as to thermally expand an electrode contact portion of the work W1or alternatively so as to thermally expand the electrode contact portion of the work W1and a heat transfer portion of an adjoining work W2to which heat is transferred from the electrode contact portion, and then the portions are contracted so as to form a deformed portion Q and the deformed portion Q is separated from the adjoining works W1,W2and a gap H is formed between the works W1,W2which are overlapped, and a laser beam L is irradiated at a position where the gap H is large enough to spread the vapor generated by the vaporization of the coating heated.

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