Method for connecting a fine wire to a connecting pin

Details Method for connecting a fine wire to a connecting pin Method for connecting a fine wire to a connecting pin

1975-06-27

1977-08-02

Truhe, J. V.

Electric heating

Metal heating

By arc

B23K 900

Patent

active

040398013

ABSTRACT:
A fine insulated wire with a diameter of less than 0.3 mm is attached to a connecting pin embedded in an electric component. The wire is wrapped around this connecting pin at least three times, and then argon-arc welded without melting the electrode. This welding operation is carried out from a distance of less than 3 mm and preferably on the order of 0.5 mm, for a short time such as for a period of less than 0.75 seconds, preferably on the order of 0.5 seconds. In order to avoid heating the wire is far above its melting point, which might destroy the wire or cause similar disadvantages, the connection pin is pre-tinned, the tin is rendered molten and the insulating coating of the wire is partially burned during the welding process in such a way that the solidified tin will hold the wire at several points.

REFERENCES:
patent: 3649811 (1972-03-01), Schoenthaler
patent: 3673681 (1972-07-01), Steranko
"Tungsten Arc Welded", The Welding Engineer, Dec. 1948, pp. 60 & 62, by Clyde B. Clason.
IBM Technical Disclosure, "Butt Brazing Apparatus and Method", vol. 15, No. 10, Mar. 1973, p. 3297.

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