Powder injection apparatus for a plasma spray gun

Details Powder injection apparatus for a plasma spray gun Powder injection apparatus for a plasma spray gun

1993-10-13

1995-04-18

Paschall, Mark H.

Electric heating

Metal heating

By arc

219 7616, 219 7615, 21912149, 21912151, 427446, B23K 1000

Patent

active

054080665

ABSTRACT:
A powder injection apparatus for a plasma spray gun includes a block having channelling therein for liquid coolant. A powder port extends through the block in proximity to the channelling so as to be cooled by coolant flowing therein. The port has a powder inlet receptive of spray powder in a carrier gas, and has a powder outlet end formed as a tubular protrusion extending from the block. A pair of extensions extend from the block proximate the protrusion on diametrically opposite sides thereof. Each extension has at least one orifice therein disposed so as to direct gas onto the protrusion. A pair of additional gas exit openings direct gas to the face of the gun.

REFERENCES:
patent: 2922869 (1960-01-01), Giannini et al.
patent: 3914573 (1975-10-01), Muehlberger
patent: 4140892 (1979-02-01), Muller
patent: 4445021 (1984-04-01), Irons et al.
patent: 4990739 (1991-02-01), Zaplatynsky
patent: 5013883 (1991-05-01), Fuimefreddo et al.
patent: 5148986 (1992-09-01), Rusch

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