| 2012 №03 (09) | 2012 №03 (02) |
The Paton Welding Journal, 2012, #3, 2-6 pages
MODELLING OF PROCESSES OF HEAT-, MASS- AND ELECTRIC TRANSFER IN COLUMN AND ANODE REGION OF ARC WITH REFRACTORY CATHODE
I.V. KRIKENT1, I.V. KRIVTSUN2 and V.F. DEMCHENKO2
1Dneprodzerzhinsk State Technical University, Dneprodzerzhinsk, Ukraine
2E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
Abstract
Numerical analysis of thermal, electromagnetic and gas-dynamic characteristics of plasma of free-burning arc in argon at atmospheric pressure with tungsten cathode and copper water-cooled anode was performed in the anode region and column of welding arc based on self-consistent mathematic model of processes of heat-, mass- and electric transfer. Results of calculation of current density on the anode and heat flow in the anode are compared with the available experimental data. It is shown that considering of the anode potential drop in the model provides more accurate predictions of the characteristics of heat and electric interaction of arc plasma with anode surface.
Keywords: fusion welding, electric arc, refractory cathode, arc characteristics, modelling of heat-, mass- and electric transfer
Received: 20.12.11
Published: 28.03.12
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