Abstract
A three dimensional quasi-steady state mathematical model of the slag bath and hollowingot has been established based on the newly developed electroslag remelting( ESR) technology for hollowingot manufacture. The electromagnetic, flowand temperature fields during the electroslag remelting hollowingot 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 flowvelocity was much faster and the temperature field of the slag bath was more uniform,and the metal pool shape was shallower. The CSMcan 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 hollowingots were thus greatly improved.
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