Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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MODELING OF HEAT TRANSFER IN PLASMA SURFACE HEAT TREATMENT ON REVERSE CORRENT POLARITY

Belinin D.S. 1 Trushnikov D.N. 1 Schisin Y.D. 1
1 Perm national research polytechnic university
A mathematical model of plasma surface tempering steel products from vyskolegirovannyh current reverse polarity. The model takes into account two mechanisms of heat transfer to the product when working on the plasma torch current of reverse polarity from the plasma flow and by cathode surface phenomena products. It is proposed in the calculation of temperature fields in the processing of reverse polarity to use a combined heat source. The amount of heat transferred plasma stream is represented as a surface of the heat source to the normal distribution of heat flow in the heating spot. Given the rapid and chaotic movement of cathode spots, the brevity of their existence, the cumulative effect of cathode spots replaced uniformly distributed surface heat source Solution of the problem of thermal conductivity obtained by finite element method using Comsol package based on the equation of energy transfer.