Numerical Simulation of Electromagnetic Field of Industrial Scale Electroslag Remelting Process

doi:10.12068/j.issn.1005-3026.2017.05.010

Abstract

Abstract:

A mathematical model is established to investigate the electromagnetic field phenomena in an industrial-scale electroslag remelting process， the coupled real and imaginary scalar equations of magnetic field intensity are simultaneously solved with FLUENT software. The distribution characteristics of electromagnetic field with 50Hz have been analyzed， and the effects of current frequency and electrode penetration depth on electromagnetic field are also investigated. The results indicate that the current density increases from 91 378A/m² to 190 746A/m² when the current frequency varies from 0.5Hz to 60Hz. The magnetic field intensity concentrates in the region adjacent to the surface of electrode and ingot with the current frequency increasing. In addition， it also results in the alteration of the direction of Lorentz force at the slag-pool interface. Under the condition of the same power input， the Joule heating density in slag far from the electrode tip increases with the electrode penetration depth， however， it decreases at the region adjacent to the electrode tip.

Key words: electroslag remelting, electromagnetic field, FLUENT, frequency, electrode penetration depth

CLC Number:

TP391

YU Jia， LIU Fu-bin， JIANG Zhou-hua， CHEN Kui. Numerical Simulation of Electromagnetic Field of Industrial Scale Electroslag Remelting Process[J]. Journal of Northeastern University:Natural Science, 2017, 38(5): 655-660.

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