Numerical Simulation of Magnetohydrodynamic Behavior of ESR Slag

doi:10.12068/j.issn.1005-3026.2014.11.010

Abstract

Abstract: A coupled model for the magnetic field， temperature field and fluid flow field of electroslag remelting (ESR) was developed. Considering electromagnetic force and thermal buoyancy force effects on the fluid flow in slag pool， the effects of practice parameters (electrode tip shape， immersion depth， and current density) on the magnetohydrodynamic behavior of ESR slag were investigated. The results showed that the anticlockwise circulation pattern is generated in slag pool when electromagnetic force is dominated， and the clockwise circulation pattern is generated in slag pool when buoyancy force is dominated. When current density and current frequency are 5000A and 50Hz， respectively， the anticlockwise vortex and clockwise vortex are coexisted in slag pool for the electrode tip with flat shape， but only clockwise vortex is existed in slag pool for the electrode tip with conical shape. The maximum velocities of molten slag are 005m/s and 020m/s for the electrode tip with flat shape and conical shape， respectively. Increasing immersion depth and current density can enhance anticlockwise vortex in slag pool. On the contrary， the clockwise vortex in slag pool is enhanced.

Key words: electroslag remelting (ESR), slag pool, magnetohydrodynamic behavior, numerical simulation

CLC Number:

TF142

WANG Xiaohua， LI Ying. Numerical Simulation of Magnetohydrodynamic Behavior of ESR Slag[J]. Journal of Northeastern University Natural Science, 2014, 35(11): 1561-1564.

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