Bonding a highly conductive arc-resistant electrical contact pad

Details Bonding a highly conductive arc-resistant electrical contact pad Bonding a highly conductive arc-resistant electrical contact pad

1979-03-29

1981-09-22

Rubinson, Gene Z.

Electric heating

Metal heating

For bonding with pressure

219 7802, 219 912, 219 9123, B23K 1120

Patent

active

042912156

ABSTRACT:
One form of the method includes disposing a silver contact pad on only a portion of a metal body. The joint between the silver contact pad and the metal body includes a metal which is metallurgically compatible with the silver contact pad and with the metal body. Heat and pressure are applied to the joint through welding electrodes. This joins the contact pad to the metal body and forms a metallurgical bond therebetween. In one embodiment, the metal body comprises copper and the compatible metal comprises tin. The welding electrodes may include shaping surfaces thereon so that the contact pad can be joined to the metal body while substantially simultaneously shaping the combination of the contact pad and the metal body. The resultant contact pad is arc-resistant,i.e., resistant to erosion, and has a typical thickness in the range of from about 0.0005" to about 0.010".

REFERENCES:
patent: 1261943 (1918-04-01), Lashar
patent: 2307579 (1943-01-01), Fluke
patent: 2826674 (1958-03-01), Peras
patent: 2909643 (1959-10-01), Graves
patent: 3141949 (1964-07-01), Lovell
patent: 3720805 (1973-03-01), Fitzgerald
patent: 3859491 (1975-01-01), Larson
patent: 4130750 (1978-12-01), Bennett et al.
"Heat Treat Your Resistance Welds--Use Electronic _Tempering Control CR7503-D149", General Electric Control, Sales Pamphlet; 4-44 (4M) Filing No. 8960; GEA-4201; _General Electric, Schenectady, N.Y., Apr. 1944.

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