Arc percussion welding a plated pin to a thin tab of dissimilar

Details Arc percussion welding a plated pin to a thin tab of dissimilar Arc percussion welding a plated pin to a thin tab of dissimilar

1983-06-27

1985-10-01

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PY, 219107, 219137WM, B23K 900

Patent

active

045448230

ABSTRACT:
To obtain acceptable arc percussion welding of tin plated copper pins to thin brass strip members, the tin must be prevented from becoming trapped in the weld zone and gaseous and other forms of material also being trapped. By giving the end of a pin a smooth, hemispherical profile, the plasma arc is initiated at the center of the pin end and progressively moves radially outwards. This melts the tin plate layer and the tin is caused to flow radially outwards from the weld zone. The copper of the pin and brass of the strip then melt slightly and on impact welding is achieved. The outward flow of tin also assists in causing other undesirable elements being removed from the weld zone.

REFERENCES:
patent: 2231480 (1941-02-01), Pilger
patent: 2256480 (1941-09-01), Hughes
patent: 2491479 (1949-12-01), Dash
patent: 2858414 (1958-10-01), Dash
patent: 2885531 (1959-05-01), Aversten
patent: 3488841 (1970-01-01), Stern
patent: 3505494 (1970-04-01), Ruetschi
patent: 3988563 (1976-10-01), Swengel, Sr. et al.
patent: 4319118 (1982-03-01), Chason
Welding Journal, Sep. 1960, pp. 903-907, "Percussion Welding Using Magnetic Force-A Production Process That Appears Capable of Producing, Very Economically, A High-Quality Full-Area Weld", by F. R. Manning and J. B. Welch.
Metals Handbook, 8th Edition, vol. 6, "Welding and Brazing".

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