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Finite element simulation of vacuum arc remelting

✍ Scribed by D. K. Gartling; P. A. Sackinger

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
237 KB
Volume
24
Category
Article
ISSN
0271-2091

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✦ Synopsis

Vacuum arc remelting is a process for producing homogeneous ingots of reactive and macrosegregation-sensitive alloys. A mathematical model of the transport phenomena in the ingot melt is presented together with a discussion of the various simplifying assumptions and approximations that make the problem tractable, with particular attention on transport in the interdendritic mushy zone and on the magnetohydrodynamics. The finite element method is used to discretize the equations for the non-isothermal flow problem and the quasi-static electromagnetic problem. Coupling of the finite element solutions for the two field problems is accomplished using the Parallel Virtual Machine software. An analysis of the fluid flow and heat transport in the melt pool of the solidifying ingot shows some of the factors that influence ingot quality during quasi-steady growth conditions.

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