PLASMA GENERATOR Russian patent published in 1995 - IPC

FIELD: metal cutting and welding. SUBSTANCE: plasma generator has cathode 2, cathode holder, anode 5 in the form of nozzle, anode holder 10, insulation layer fitted to body 1, metal enclosure 7 electrically insulated from anode by high-temperature plastic material 9, channel 4 to feed plasma-forming gas and duct 12 for cooling fluid. Wire 11 of anode power supply is placed in duct for cooling fluid and is connected to anode holder 10. Enclosure of plasma generator is made of aluminium or aluminium alloy and is coated on outside and inside with nonconductive oxide film. Alumina is used for insulation of enclosure. Sealing 8 with rubber space is made on Morse taper. EFFECT: improved operational efficiency and reliability. 5 cl, 1 dwg