GAS-AIR HIGH-VOLTAGE PLASMA GENERATOR Russian patent published in 1998 - IPC

FIELD: powder metallurgy, plasma equipment, in particular, for coating deposition. SUBSTANCE: swirl generator of device is designed as sleeve which is made from insulating material and has tangential side slots. Cathode unit which is located inside sleeve has blunt-nosed cathode which runs inside inter-electrode insertion. Angle at vertex of input cone of inter-electrode insertion is in range of 120-130 degrees. Double gas screen prevents break-down between anode and inter-electrode insertion. EFFECT: increased arc voltage with respect to short inter-electrode insertion and decreased current values. 14 cl, 3 dwg , 1 tbl