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