Simulation for Solidification Structure of Continuous Casting Bloom Using Cellular Automaton-Finite Element Model

Abstract

A coupled cellular automaton-finite element (CAFE) model was used to simulate the solidification structure of continuous casting bloom. The simulated solidification structure and temperature field were validated by the industrial trial. The influence of superheat, secondary cooling water flow, and mold electromagnetic stirring (M-EMS) on the solidification structure was discussed. To simulate the intense flow field and uniform temperature with M-EMS, the thermal conductivity in liquid and the formation of crystals increased, separately. The ratio of equiaxed crystal zone decreases from 28.47 to 16.45% with the superheat increasing from 15 to 35 °C. With the secondary cooling water flow increasing 20% and decreasing 20%, the ratio of equiaxed crystal zone is 20.64% and 23.16%, respectively. The ratio of equiaxed crystal zone increases from 21.75 to 32.77% with the application of M-EMS.