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Roll-welding precious metals for telephone contacts

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1 Author(s)
Quinlan, A. L. ; Western Electric Company, Inc., Chicago, Ill

THE roll-welding process has been used for years at the Western Electric Company for fabricating tapes for precious metal contacts. A thin strand of palladium a few thousandths of an inch thick and about 0.010 inch wide is roll-welded to a nickel tape of larger section to facilitate handling of the short lengths required in the contact-welding machines. Many millions of contacts are required in the telephone equipment manufactured each year and many contact welders are used.

Published in:

American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the  (Volume:74 ,  Issue: 6 )