Plasma torch with axial injection of feedstock

Details Plasma torch with axial injection of feedstock Plasma torch with axial injection of feedstock

1994-06-20

1995-05-30

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912151, 21912148, 219 7616, 427446, B23K 1000

Patent

active

054203910

ABSTRACT:
A plasma torch incorporating an arc forming a chamber in which a cathode cooperates with an anode to form a plasma arc. A splitter is connected to the arc forming chamber and comprises a plurality of passages arranged about a core region, the passages leading from the arc forming chamber into a nozzle passage extending along the axis of the arc forming chamber. A feed passage passes through the core region, opening co-axially with the longitudinal axis of the torch, in or about the region of coalescence of the plasma stream exiting the splitter passages. Feedstock material, such as powder, is fed through the feed passage into the coalesced plasma stream in an axial direction and in its direction of travel.

REFERENCES:
patent: 3272962 (1966-09-01), Mauskapf
patent: 4095081 (1978-06-01), Ashman
patent: 4321454 (1982-03-01), Willens et al.
patent: 4780591 (1988-10-01), Bernecki et al.
patent: 4982067 (1991-01-01), Marantz et al.
patent: 5008511 (1991-04-01), Ross
patent: 5144110 (1992-09-01), Marantz et al.
patent: 5298714 (1994-03-01), Szente et al.
patent: 5332885 (1994-07-01), Lardes

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