Open-Arc Plasma Wire Spray Method and Apparatus.
Patent, Filed 2 Oct 89, patented 28 Apr 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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 guidecontact tip is used for supporting a positively charged spray wire with a wire alignment fixture for coupling the wire guidecontact 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 guidecontact tip.
- Machinery and Tools