Laser assisted high frequency welding

Details Laser assisted high frequency welding Laser assisted high frequency welding

1992-11-06

1994-08-30

Albritton, C. L.

Electric heating

Metal heating

By arc

29726, B73K 2600

Patent

active

053430158

ABSTRACT:
A laser beam is directed toward a rotating metallic tube having a fin helically wound about and welded to its surface by a high frequency welding process. The laser beam generates heat in the tube to supplement the heat induced by resistance to electrical current flow to create a proper temperature in the tube for forge welding of the fin and tube.

REFERENCES:
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patent: 3340601 (1967-09-01), Garibotti
patent: 4167662 (1979-09-01), Steen
patent: 4507540 (1985-03-01), Hamasaki
patent: 4829153 (1989-05-01), Correy
patent: 4841617 (1989-06-01), Schmidt et al.
patent: 4891491 (1990-01-01), Duley et al.
patent: 4969255 (1990-11-01), Schmidt et al.
patent: 5006688 (1991-04-01), Cross
patent: 5006694 (1991-04-01), Handke et al.

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