Method for welding relatively small parts

Details Method for welding relatively small parts Method for welding relatively small parts

1988-10-17

1989-08-22

Albritton, C. L.

Electric heating

Metal heating

By arc

219350, 219 9615, B23K 2600

Patent

active

048598275

ABSTRACT:
Laser welding of an outer sleeve 14 to an inner fiber ferrule 12 is expedited by, first, machining a thinned region 18 in the outer diameter of the sleeve. After the ferrule has been inserted in the sleeve, the thinned region permits the laser to fuse through the sleeve and melt part of the ferrule, as is required for laser welding of ferrule for the sleeve. The thinned region is preferably made by using a rotary cutter to cut an axially extending slot in the outer sleeve, which permits a succession of laser welds 21 in the axial direction in the slot. In a preferred embodiment, thinned regions 18,19 are made on opposite sides of the outer sleeve, and laser welding is performed simultaneously on both sides of the sleeve so as to avoid distortions caused by thermal stress asymmetries.

REFERENCES:
patent: 4195980 (1980-04-01), Sterling et al.
patent: 4263495 (1981-04-01), Fujita et al.
patent: 4350867 (1982-09-01), Kinoshita et al.
patent: 4802729 (1989-02-01), Rivoallan et al.

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