Gas cooled plasma torch

Details Gas cooled plasma torch Gas cooled plasma torch

1996-04-16

1998-03-10

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912152, 21912151, 2191215, 219 75, B23K 1000

Patent

active

057264155

ABSTRACT:
A plasma torch comprising an elongated electrically conductive nozzle with an internal, generally cylindrical chamber; an electrically conductive electrode with an elongated, cylindrical nose extending into the cylindrical chamber of the nozzle to define a relatively thin, elongated annular gas passage between the nozzle and the electrode nose, wherein the electrode includes a cylindrical portion above the nose, which portion has axially extending swirl grooves; and, a separate insulator sleeve engaging both the cylindrical portion and the nozzle for holding the electrode nose concentric with said cylindrical chamber of the nozzle. The nozzle includes means for venting a portion of said cooling gas from the relatively thin annular gas passage.

REFERENCES:
patent: 3366772 (1968-01-01), Wickham et al.
patent: 3450926 (1969-06-01), Kiernan
patent: 3562486 (1971-02-01), Hatch
patent: 4024373 (1977-05-01), Bykhovsky
patent: 4777343 (1988-10-01), Goodwin
patent: 5013885 (1991-05-01), Carkhuff et al.
patent: 5132512 (1992-07-01), Sanders et al.
patent: 5235155 (1993-08-01), Yamada
patent: 5296668 (1994-03-01), Foreman et al.
patent: 5317126 (1994-05-01), Couch, Jr. et al.
patent: 5514848 (1996-05-01), Ross et al.

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