PLASMA GENERATOR Russian patent published in 1995 - IPC

FIELD: plasma cutting, welding, surfacing, etc. SUBSTANCE: plasma generator has body accommodating electrode holder. The latter has electrode installed in it with active insert, swirler formed by helical grooves made on outer surface of electrode holder, bushing insulating electrode holder from body, nozzle attached to body and gas supply device. Plasma generator has shell made of material with low thermal conductivity and installed between shoulders over edges of swirler above grooves. Electrode hollow is communicated with gas supply device and hollow of electrode holder. Hollow of electrode holder is communicated with channels for cooling body through holes in insulating bushing. EFFECT: higher efficiency. 3 cl, 1 dwg