Manufacture of improved electrical contact materials

Details Manufacture of improved electrical contact materials Manufacture of improved electrical contact materials

B - Operations, Transporting

21

C

13/7

B21C 23/30 (2006.01) B23K 20/00 (2006.01) H01H 1/021 (2006.01)

Patent

CA 1072265

ABSTRACT OF THE DISCLOSURE Improved electrical contact materials and a method for manufacturing same are disclosed. The improved materials com- prise mechanically elongated billets composed of at least a first metal and oxide of a second metal which is more readily oxidizable than said first metal. The billets include a plur- ality of first and second zones, the zones extending the entire length of said billet and being substantially symmetrical and coaxial about the longitudinal axis of the billet. The first zones are substantially devoid of metal oxide and the second zones are substantially composed of metal-metal oxide. The first zones are more readily deformable than the second zones so that said billet will deform symmetrically about its long- itudinal axis when headed in the direction normal to said axis. The zones devoid of the metal oxide serve as slip zones and render the contact material readily formable into any desired electrical contact shape.

280193

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