Numerical Analysis of Arc Plasma with Metal Transfer in GMAW
A numerical model of time-dependent gas shielded metal arc is described, which was developed in order to make clear the kinetics of arc plasma together with metal transfer. It is possible to calculate and visualize time-dependent temperature and fluid flow field of argon shielded metal arc plasma with the grow-up and the subsequent detachment of the liquid metal drop at the wire tip. Numerical calculation shows that the arc shape in globular transfer abruptly changes at the moment of metal drop detachment. Whereas, the spray transfer arc seems to be stable and almost does not fluctuate with metal transfer.
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
Y. Hirata and K. Ohnishi, "Numerical Analysis of Arc Plasma with Metal Transfer in GMAW", Materials Science Forum, Vols. 580-582, pp. 359-362, 2008