Oasting Heat Transfer and Stress

element method (FEM)taking into account the ferrostatic pressure dueto the gravity force andthe mechanical behaviors of the strand in liquid phase, mushyzone and ~h, phase. The microsegregation of solute elements in steel was assessed to determine some characteristic temperatures and solid, 8-Fe and },-Fe fractions in the mushyzone. The heat transfer coefficient betweenthe solidifying shell and the mold wall was iteratively determined with the coupled analysis of the fluid flow-heat transfer analysis by the FDMand the thermo-elasto-plastic stress analysis by the FEM.With the above procedure, the mathematical model has been developed to predict the possibility of cracks in the strand, originated from the interdendritic liquid film in the mushyzone, through the fully coupled analysis of fluid flow, heat transfer and stress in the continuously cast round billet. The calculated mold temperature and heat flux at various casting speeds showgood agreements with the reported experimental observations.