基于坯壳应力遗传特性建立铸坯热力耦合模型,利用ANSYS对结晶器内铸坯传热及应力进行数值模拟,对比分析结晶器磨损前后坯壳厚度、表面温度和气隙分布规律。结果表明:结晶器在磨损之后,偏离角部附近形成“热点”区域。气隙分布范围由距角部10 mm扩展到80 mm,最大厚度由0.1 mm增加到1.2 mm。 Based on the genetic property of the shell, the thermal coupling model of the slab was established. The heat transfer and stress of the slab in the mold were numerically simulated by ANSYS. The shell thickness, surface temperature and air gap distribution were compared before and after the mold was worn. The results show that after the mold is worn, a “hot spot” region is formed around the corner. Air gap distribution range from 10 mm from the corner extended to 80 mm, the maximum thickness increased from 0.1 mm to 1.2 mm.