Plasma spray gun having a gas vortex producing nozzle

Details Plasma spray gun having a gas vortex producing nozzle Plasma spray gun having a gas vortex producing nozzle

1982-10-12

1985-03-19

Paschall, M. H.

Electric heating

Metal heating

By arc

219121PP, 219121PQ, 219 7616, 31323151, B23K 900

Patent

active

045061360

ABSTRACT:
A plasma flame spray gun suitable for being constructed physically smaller than comparable power prior art plasma flame spray guns. The gun includes a nozzle having a tapering portion on the inlet side thereof. A cathode with a flat tip is positioned to at least partially extend into the tapering portion of the nozzle. A gas distribution ring is located around the cathode for creating a vortex around the cathode tip. This causes the arc formed between the tip and the nozzle to have a root which spins around the perimeter of the nozzle tip resulting in less wear and, therefore, extended part life.

REFERENCES:
patent: 3366772 (1968-01-01), Wickham et al.
patent: 3676638 (1972-07-01), Stand
patent: 3823302 (1974-07-01), Muehlberger
patent: 3851140 (1974-11-01), Coucher
patent: 4059743 (1977-11-01), Esibian et al.

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