Plasma arc torch having water injection nozzle assembly

Details Plasma arc torch having water injection nozzle assembly Plasma arc torch having water injection nozzle assembly

1995-06-05

1997-08-26

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912151, 21912149, 21912148, 219 75, B23K 1000

Patent

active

056607431

ABSTRACT:
A plasma arc torch having a nozzle assembly positioned adjacent the discharge end of the electrode of the torch, and wherein the nozzle assembly comprises a nozzle base defining an annular outer surface and a lower nozzle member defining an annular inner surface which is spaced from the outer surface so as to define an annular water passageway therebetween. The annular water passageway defines an angle with the longitudinal axis of the torch which is less than about 30.degree. which provides both an efficient cooling of the nozzle assembly and constriction of the plasma arc, and without unduly cooling the plasma arc.

REFERENCES:
patent: 3534388 (1970-10-01), Ito et al.
patent: 3833787 (1974-09-01), Couch, Jr.
patent: 4311897 (1982-01-01), Yerushalmy
patent: 4369919 (1983-01-01), Beloev et al.
patent: 4390772 (1983-06-01), Hiratake
patent: 4992642 (1991-02-01), Kamp et al.
patent: 5023425 (1991-06-01), Severance, Jr.
patent: 5124525 (1992-06-01), Severance, Jr. et al.

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