Numerical Simulation of Electroslag Remelting Process of Hollow Ingot with T-shape Current Supplying Mold

doi:10.12068/j.issn.1005-3026.2015.06.011

Abstract

Abstract: A three dimensional quasi-steady state mathematical model of the slag bath and hollow ingot has been established based on the newly developed electroslag remelting (ESR) technology for hollow ingot manufacture. The electromagnetic， flow and temperature fields during the electroslag remelting hollow ingot process with and without the current supplying mold (CSM) have been simulated using commercial software ANSYS. Computational results showed that the maximum current density and joule heat of the slag bath were obtained in the conductive section of T-shaped CSM， where the fluid flow velocity was much faster and the temperature field of the slag bath was more uniform， and the metal pool shape was shallower. The CSM can keep slag bath and metal pool temperature constantly during the exchange of electrodes， which avoided the rapid solidification of liquid metal near the mold wall to generated slag ditchs when the slag bath temperature drops rapidly. The solidification quality and surface quality of hollow ingots were thus greatly improved.

Key words: current supplying mold, electroslag remelting, hollow ingots, electromagnetic field, flow field, temperature field, solidification

CLC Number:

TF744

CHEN Xu， LIU Fu-bin， JIANG Zhou-hua， LI Xing. Numerical Simulation of Electroslag Remelting Process of Hollow Ingot with T-shape Current Supplying Mold[J]. Journal of Northeastern University Natural Science, 2015, 36(6): 805-810.

References

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