Metal fusion bonding – Process – With shaping
Patent
1978-11-13
1981-09-08
Crane, Daniel C.
Metal fusion bonding
Process
With shaping
29879, 219119, 72258, 72267, H01B 1300, B23K 924, B21D 3900
Patent
active
042880246
ABSTRACT:
A bi-metal resistance welding electrode has a dispersion strengthened copper tip and a high conductivity copper shank. The electrode is made by forming a tip member in two successive upsetting operations to produce a tip member having a coating of high conductivity copper covering substantially all of one end thereof. A solid, high conductivity copper, cylindrical billet is formed and brazed to the tip member at its coated end to form an extrusion blank. The extrusion blank is back extruded with the high conductivity copper material being worked substantially, while only partially back extruding the tip portion of the extrusion blank.
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Nadkarni, A. V., et al., "A New Dispersion-Strengthened Copper," From Metals Engineering Quarterly, Aug. 1976, pp. 10-15.
Crane Daniel C.
The Nippert Company
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