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Extension of Electrode Lifetime for Plasma Torch by Axial Magnetic Field  

Cho, Chu-Hyun (한국전기연구원)
Han, Yong-Ki ((주)케이피씨)
Han, Hyun ((주)케이피씨)
Kwon, Oh-Kyung ((주)케이피씨)
Choi, Young-Wook (한국전기연구원)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.11, 2007 , pp. 1978-1981 More about this Journal
Abstract
Axial magnetic field was applied into the hollow anode of plasma torch for the purpose of extension of electrode lifetime. The average arc voltage increased because the arc column became longer, the arc voltage ripple frequency became low. The steady state of arc voltage was removed by applied magnetic filed. The lifetime of electrode was 60 times longer than operation without magnetic field.
Keywords
plasma torch; arc voltage; electrode lifetime; magnetic field;
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