FIELD: mechanical engineering. SUBSTANCE: method used for generating plasma jet in machining (cutting) nonferrous metals and stainless steels as well as for producing heat sources includes pre-ionization of gas jet by increasing gas temperature followed by applying electrical potential to obtain electric-arc plasma. Gaseous discharge is effected at lower electrical potential. EFFECT: enhanced electric-arc power and, hence, increased cutting depth. 1 cl, 1 dwg _
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