Method for making a full round bushing

Details Method for making a full round bushing Method for making a full round bushing

1986-09-02

1988-06-21

Eley, Timothy V.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

219121LD, B21D 5310

Patent

active

047517778

ABSTRACT:
A full round bushing is formed by laser welding opposed edges of a bimetal member deformed into a generally cylindrical configuration. The laser beam parameters are closely controlled so as to limit any adverse effect on a bearing metal layer. The weld only reaches a depth approximating 20% to 75% of a steel reinforcing layer. The beam approaches the seam at an angle of incidence approximating 10.degree. to 45.degree. and at a laser focal point offset 5% tp 70% of the spot diameter of the laser beam. An overlap of the pulse spot-welding approximating 50% to 75% is preferable.

REFERENCES:
patent: 4031734 (1977-06-01), Imme et al.
patent: 4626653 (1986-12-01), Sciakey et al.

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