EFFECT OF SWIRLING GAS FLOW IN ELECTRODE CA VITY ON ITS EROSION

摘要

Investigation results on specific erosion of copper tubular electrodes of the arc plasmatron for air heating are presented. The decisive influence of spatial stabilization of the arc discharge and current strength on the value of specific erosion is shown. The conditions of optimal erosion of electrodes are determined depending on the flow rate of plasma-forming gas, pressure in a discharge chamber, and an electrode diameter.