Welding process

Details Welding process Welding process

1996-01-30

1999-03-16

Shaw, Clifford C.

Electric heating

Metal heating

Wire, rod, or bar bonding

2191171, B23K 1118

Patent

active

058833528

ABSTRACT:
Intermediate material in the form of a metal strip with a contact area is provided with a projection on the bottom surface of its core area, i.e., on the surface to be joined to a contact carrier strip of copper or a copper alloy. The bottom surface of the strip facing the contact carrier strip is plated with a material which consists essentially of silver, and the melting point of the core area of the metal strip is above the melting point of silver. For the production of a semifinished product for electrical contacts, the metal strip is welded by its silver-coated bottom surface to the contact carrier strip, consisting essentially of copper. The silver from the coating on the core area of the metal strip and the copper from the contact carrier strip mix with each other and thus form an alloy which corresponds or is very close to the eutectic alloy with 28 wt. % of copper and the remainder of silver.

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Handy & Handy, brochure entitled "Clad Precious Metals", pp. 1-16, Jun. 1992.

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