Research on Solidification Behavior and Process Optimization in Single Point Straightening Rectangular Billet Continuous Casting for 65Mn Steel

The heat transfer and thermal plastic models had been established based on industrial 65 Mn rectangular billet,and been used to simulate solidification temperature field and stress field in straightening point,in order to determine the effect of the distribution of temperature field and thermal stress filed on casting slab quality. The simulation results indicate that when plain carbon steel casting process is used to cast 65 Mn steel,there is a large number of liquid core retained in the straightening point,high speed casting causes a irregular distribution of stress nephogram and the stress gradient increases,this will greatly increase the internal crack occurrence; Macro observation on billet indicates that the proposed process optimization can greatly improve the quality of casting billet.