Influence of Mould Wear on Strand Heat Transfer

Based on the genetic characteristics of stress in the solidified shell,a coupled thermo-mechanical model for strand was established.Heat transfer and stress analysis on the strand in mould were completed by ANSYS.The shell thickness,surface temperature and air gap distribution were contrasted between new and worn moulds.The results suggested that the hot pot would appear apart from the corner area after mould was worn.Air gap distribution area extended from 10 mm to 80 mm apart from the corner.The maximum thickness increased from 0.1 mm to 1.2 mm.