Laser welding aluminum to copper

Details Laser welding aluminum to copper Laser welding aluminum to copper

1978-10-20

1980-09-23

Albritton, C. L.

Electric heating

Metal heating

By arc

219118, B23K 2700

Patent

active

042244994

ABSTRACT:
Copper and aluminum conductors are butt welded or corner welded by a two-part process involving heating and melting the Cu-Al interface with energy from a pulse laser and simultaneously generating a contact pressure. The laser wavelength is 1.06 micrometers or less and a single 8 millisecond pulse is used. Brittle intermetallics are found in the flash but the narrow fusion zone in the weld is substantially free of intermetallics. High conductivity aluminum is successfully welded to electrolytic tough pitch (ETP) copper wire.

REFERENCES:
patent: 3121785 (1964-02-01), Terrill et al.

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