Bimetal resistance welding electrode and method for making

Details Bimetal resistance welding electrode and method for making Bimetal resistance welding electrode and method for making

1976-12-13

1978-02-07

Larson, Lowell A.

Metal working

Method of mechanical manufacture

Electrical device making

72258, 72267, 228155, 219119, B21C 2320, B23K 3540, B23K 3522

Patent

active

040719472

ABSTRACT:
A bimetal resistive welding electrode having a dispersion strengthened copper tip portion and a shank portion formed of a high conductivity copper is produced by brazing together a conductive copper billet and a dispersion strengthened copper billet to form an extrusion blank. The brazing temperature is such that the dispersion strengthened copper is not annealed. The extrusion blank is then extruded into the shape of a welding electrode with the extruding process hardening the conductive copper shank portion to produce a full hard electrode.

REFERENCES:
patent: 2986273 (1961-05-01), Bardgett
patent: 3197843 (1965-08-01), Nippert
patent: 3197857 (1965-08-01), Nippert
patent: 3634934 (1972-01-01), Fitzgerald
patent: 3803892 (1974-04-01), Yamaguchi et al.
patent: 3969156 (1976-07-01), Wallbaum
patent: 4045644 (1977-08-01), Shafer et al.

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