2019
DOI: 10.1007/s11663-019-01719-5
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A Parametric Study of the Vacuum Arc Remelting (VAR) Process: Effects of Arc Radius, Side-Arcing, and Gas Cooling

Abstract: Main modeling challenges for vacuum arc remelting (VAR) are briefly highlighted concerning various involving phenomena during the process such as formation and movement of cathode spots on the surface of electrode, the vacuum plasma, side-arcing, the thermal radiation in the vacuum region, magnetohydrodynamics (MHD) in the molten pool, melting of the electrode, and solidification of the ingot. A numerical model is proposed to investigate the influence of several decisive parameters such as arc mode (diffusive … Show more

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Cited by 34 publications
(15 citation statements)
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“…The effect of the metal crown for-mation (~20 mm) at the top edge of the ingot on the electromagnetic field is considered. [14] (iii) The top surface of ingot (vacuum-ingot interface) is assumed to be stationary and flat. (iv) The formation of droplets at the tip of electrode and the dripping of droplets in the vacuum are not modeled.…”
Section: Modelingmentioning
confidence: 99%
See 4 more Smart Citations
“…The effect of the metal crown for-mation (~20 mm) at the top edge of the ingot on the electromagnetic field is considered. [14] (iii) The top surface of ingot (vacuum-ingot interface) is assumed to be stationary and flat. (iv) The formation of droplets at the tip of electrode and the dripping of droplets in the vacuum are not modeled.…”
Section: Modelingmentioning
confidence: 99%
“…(v) The arc is implicitly modeled considering a Gaussian distribution of electric current density as a function of radial position on the tip of the electrode and the top of the ingot. [14,[32][33][34]…”
Section: Modelingmentioning
confidence: 99%
See 3 more Smart Citations