Plasma welding

Details Plasma welding Plasma welding

1978-03-13

1980-03-25

Goldberg, Elliot A.

Electric heating

Metal heating

By arc

21913771, 219137R, B23K 910

Patent

active

041952162

ABSTRACT:
In plasma welding apparatus controls are provided which regulate the rates of increasing and decreasing the welding parameters e.g., welding current, gas flow and wire feed to prevent the formations of craters in the weld at the end of a welding run. Improved welds are formed if the wire feed rate is increased prior to the start of the decrease in welding current but after the gas flow to the plasma arc has begun to decrease.

REFERENCES:
patent: 2152785 (1939-04-01), Blankenbuehler
patent: 2766361 (1956-10-01), Landis et al.
patent: 3956610 (1976-05-01), Karbe et al.
patent: 4023006 (1977-05-01), West et al.

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