Numerical Simulation for Temperature Field of Chamfered Mold and Solidification Process

摘要

In the continuous casting process of micro alloyed steel, the transverse cracks affect the slab surface quality seriously. The position of transverse crack is not fixed. The inner and outer sides of the slab may be both possible and difficult to control [1]. So many researchers have studied the forming mechanism and controlling method of transverse crack, and can reduce the proportion to a certain extent, but it cannot completely solve the occurrence of transverse crack [2, 3]. The transverse cracks will be reduced the incidence rate of 95% by the chamfered mold, but the occurrence rate of longitudinal crack will be increased. In this paper, the influence of chamfered mold structure on solidification process and that is compared with rectangular mold. The effect of mold structure on growth of solidified shell temperature distribution is obtained. The influence of actual temperature fields of mold copper on longitudinal crack is discussed. It will provide the basis for chamfered mold design, development and determination of continuous casting process parameters.