Method and apparatus for plasma welding

Details Method and apparatus for plasma welding Method and apparatus for plasma welding

1981-04-06

1983-02-01

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PJ, 219121PN, 219121PT, 219137R, 219 61, 219 617, 219 60A, B23K 910

Patent

active

043717756

ABSTRACT:
The invention relates to a method and an apparatus to perform plasma welding, by providing a cooling water temperature detector at the inlet side of cooling water in the plasma welding torch, controlling the temperature at the inlet side of the cooling water running into the plasma welding torch at a set temperature of more than 4.degree. C. and less than 18.degree. C., starting a plasma arc when the temperature of the cooling water reaches a specified point after starting to pass the cooling water, and moving the base metals and the torch relatively upon lapse of a specified time allowed to form a keyhole after start of the plasma arc.

REFERENCES:
patent: 4032744 (1977-06-01), Coucher
patent: 4125754 (1978-11-01), Wasserman et al.
patent: 4195216 (1980-03-01), Beauchamp et al.

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