FIELD: plasma torches. SUBSTANCE: electric arc plasma torch cooled by vapors of working medium has outlet nozzle-anode and central rod cathode mounted uniaxially. Cathode is attached to holder embraced by cylinder of heat conducting material on which tube of porous material is put. Tube contacts moisture absorbing material located in vessel of working medium. Cathode holder is installed for axial movement and is fitted with mechanism for such movement enabling to make cathode and anode to excite arc to change their relative positions for smooth power control. EFFECT: increased operational efficiency of plasma torch. 1 dwg
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