Process for laser welding of aluminum based elements

Details Process for laser welding of aluminum based elements Process for laser welding of aluminum based elements

1987-02-09

1988-07-26

Albritton, C. L.

Electric heating

Metal heating

By arc

B23K 2600

Patent

active

047602406

ABSTRACT:
A process for laser welding a cover and a casing, each made of aluminum or an aluminum-based alloy, via a nickel layer plated thereon, thereby forming a package for electronic devices, the process comprising the steps of: boring holes in sides of the casing, thereby providing holes through which input/output and source terminals can be inserted and be soldered hermetically to the casing; plating a nickel layer on the surface of the casing; mounting electronic devices in the casing and forming necessary connections between the devices and the terminals; and, welding the cover and the casing together by pulsed YAG laser beam, thereby forming a weld zone containing 1.5 to 10.0% of nickel by weight, and sealing the cover and the casing hermetically.

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