DESIGN OF GAS-DYNAMIC PROTECTION OF CATHODE ASSEMBLY USING P-13 PLASMATRONAS A CASE STUDY

Abstract

The article considers a method for designing cathode assemblies of plasmatron in the integrated CAD/CAE systems using the proposed mathematical models within the framework of the magnetogasdynamic approach using a qualitative criterion for assessing the efficiency of gas-dynamic protection. As such a criterion, it is proposed to use the value of partial pressure at which contraction of an electric arc to a cathode surface occurs. The discrepancy between the obtained data was 6% for temperature and 3% for maximum speed compared with the experiment when simulating an atmospheric pressure welding arc.