Prediction Model of Solidification Structure for Electroslag Remelting Slab Ingot
The method based on solidification mathematical model and Flemings formula was adopted to simulate electroslag remelting process. The simulation results show that the depth of the molten pool become deeper with increasing of melting speed, and when the ingot gets to the certain height, the system is in the quasi-steady state, the pool shape doesn’t change. With increasing of melting speed, secondary dendrite spacing become wider too and secondary dendrite spacing become wider gradually from the surface to center of ingot if melting speed is const. According to the simulated dendrite spacing, micro-structure of slab ingot is estimated to if meeting the demand of solidification quality, and if it can’t meeting this demand, technological conditions(melting speed)should be modified, and recalculating secondary dendrite spacing, controlling solidification structure.
L. Z. Chang and X. F. Shi, "Prediction Model of Solidification Structure for Electroslag Remelting Slab Ingot", Advanced Materials Research, Vols. 228-229, pp. 147-152, 2011