Numerical Simulation of Solidification Morphologies of Pure Copper by Vacuum Continuous Casting Using a Cellular Automaton Model and Its Experimental Verification

摘要

The purpose of this study is to predict the morphologies of the solidification process for pure copper by vacuum continuous casting (VCC) and verify its accuracy by the observed experimental results. Finite differential method and cellular automaton (CA) model were utilized to simulate the macro-temperature field, nucleation and grain growth of pure copper using real data from actual casting operations. From the observed experiment, the preliminary effective parameter is drawing speed of the VCC process. With the increase of drawing speed, morphologies of the copper will change and the position of liquid-solid zone move closer to the orifice of the mold. The solidification morphologies by CA model were corresponding to the result of actual casting experiment well.