Accession Number : ADD015438

Title :   Open-Arc Plasma Wire Spray Method and Apparatus.

Descriptive Note : Patent, Filed 2 Oct 89, patented 28 Apr 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Rogers, Frank S

Report Date : 28 Apr 1992

Pagination or Media Count : 14

Abstract : The plasma-arc torch is of the type wherein a thermally ionizable gas is directed past a non-consumable cathode electrode and through the constricted orifice of a nozzle. An arc is established between the non-consumable electrode and the nozzle to initiate and sustain a plasma stream through the constricted orifice and then through a final port in a housing. A shield gas is directed around the nozzle and through the final port in the housing. A wire guide/contact tip is used for supporting a positively charged spray wire with a wire alignment fixture for coupling the wire guide/contact tip to the plasma stream outside the final port in the housing, the wire alignment fixture having a first collar section fixed to the torch and a second collar section fixed to the wire guide/contact tip.

Descriptors :   *PLASMA SPRAYING, *PATENTS, ALIGNMENT, CATHODES, COLLARS, COUPLINGS, ELECTRODES, HOUSINGS, NOZZLES, ORIFICES, WIRE, ELECTRIC ARCS

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE