Method and apparatus for shielding the effluent from plasma spra

Details Method and apparatus for shielding the effluent from plasma spra Method and apparatus for shielding the effluent from plasma spra

1980-11-13

1982-08-24

Goldberg, Elliot A.

Electric heating

Metal heating

By arc

219 75, 219 7616, 219121PM, 219121PN, 219121PY, B23K 900

Patent

active

RE0310182

ABSTRACT:
Method and apparatus for plasma flame-spraying coating material onto a substrate by means of passing a plasma-forming gas through a nozzle electrode, passing an arc-forming current between said nozzle electrode and a rear electrode to form a plasma effluent, introducing spray coating material into the plasma effluent, passing the plasma effluent axially through a wall shroud extending from the exit of said nozzle electrode and forming a hot gas shroud for the plasma effluent at least within the wall shroud.

REFERENCES:
patent: 2887562 (1959-05-01), Mencutti
patent: 3082314 (1963-03-01), Arata
patent: 3373306 (1968-03-01), Karlovitz
patent: 3470347 (1969-09-01), Jackson
patent: 3471675 (1969-10-01), Sargent
patent: 3969603 (1976-07-01), Boughton

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