FIELD: metallurgy.
SUBSTANCE: proposed method comprises arcing on electrode, generating plasma jet by gas and arc concentration in the nozzle and electromagnetic field that heats formed metal. It differs from known procedures in that plasma generator nozzle is protected by melting of reduced or under reduced metal flowing on over it from consumable electrode or pouted thereon separately. Note here that its thickness is adjusted by melting conditions due to current polarity reversal on electrode, nozzle and formed metal. Note also that gas for plasma is produced in arcing zone due to evacuation through metal ingot formation zone located under the nozzle. Proposed device comprises arcing on electrode and cooled tray, compressing arc into plasma to heat melt formed in cooled crystalliser, and differs from known designs in that tray central part has an opening that makes it a nozzle whereto minus or zero can be connected, and solenoid can be arranged there around to rotate around it the melt of reduced or under reduced metal, leveling its thickness, hence, protecting it against thermal load. Inductor can be arranged below the nozzle to add to plasma heating and prevent metal melt freezing on the nozzle, and to concentrate metal melt flow. Note that cooled crystalliser can represent sliding crystalliser that allows retaining bath mirror at one distance from nozzle edge, that is, not interfering with plasma generator operation. Note also that ingot pull-out device can be used.
EFFECT: stable discharge in gas flow, ease of power regulation, high concentration of energy.
5 cl, 4 dwg
