Controlled pressure butt welding process and apparatus for carry

Details Controlled pressure butt welding process and apparatus for carry Controlled pressure butt welding process and apparatus for carry

1989-02-23

1990-09-25

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 51, B23K 1102

Patent

active

049595199

ABSTRACT:
In a pressure butt welding process, in particular for welding chain link bent from round wire, the influence of disturbing factors on the quality of the welding result is compensated by measuring the welding forces F.sub.K exerted on the workpiece by the upsetting dies and setting and welding voltage applied to the workpiece according to the level of the measured forces F.sub.K. A control means adjusts the welding voltage via a thyristor control circuit and thereby the effective welding power in such a way that the welding forces F.sub.K remain constant.

REFERENCES:
patent: 2684422 (1954-07-01), Esser et al.
patent: 4025451 (1978-02-01), Wust
patent: 4419558 (1983-12-01), Stiebel

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