Indirectly-cooled plasma jet torch

Details Indirectly-cooled plasma jet torch Indirectly-cooled plasma jet torch

1997-08-27

1999-03-09

Paschall, Mark H.

Electric heating

Metal heating

By arc

2191215, 219 75, B23K 1000

Patent

active

058804269

ABSTRACT:
An indirect cooling system suitable for a plasma jet cutting method is established to prevent the leakage of cooling water and to enable a stable plasma jet to be obtained. A tip having a nozzle for emitting a plasma jet is fitted to a nozzle sleeve through which cooling water circulates, and electric discharge is induced between the tip and an electrode extending through the nozzle sleeve to the neighborhood of the tip, thereby ionizing a neutral gas and emitting a plasma jet through the nozzle. In the indirectly-cooled plasma jet torch, the tip is brought into surface contact with the nozzle sleeve to fit them to each other, and contact portions of the tip and the nozzle sleeve are tapered.

REFERENCES:
patent: 3194941 (1965-07-01), Baird
patent: 3674978 (1972-07-01), Becker et al.
patent: 3818174 (1974-06-01), Camacho
patent: 4140892 (1979-02-01), Muller
patent: 4445021 (1984-04-01), Irons et al.

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