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根据凝固层内应力表达式及裂纹萌生部位的判别准则，对生产条件下的φ８００铸钢车轮裂纹进 行了预测，并用常规的热弹塑性方法计算的结果及剖面低倍组织形貌进行了评价，结果表明：预测裂纹与 计算和实测情况吻合；裂纹沟槽出现在距表面凝固厚度的 ２／３处，它与缩松、缩孔及组织缺陷没有必然的 联系；控制铸件表面温度的工艺措施是减少裂纹的有效途径
According to the stress expression in solidified layer and the criterion of crack initiation, the crack of φ800 cast steel wheel under production condition was predicted, and the results of conventional thermal elasto-plastic method and the microstructure were also evaluated. The results show that the prediction cracks are consistent with the calculated and measured values. The crack grooves appear at 2/3 of the solidified thickness of the surface, which is not necessarily related to shrinkage, shrinkage cavity and tissue defects. The technological measures for controlling the surface temperature of the casting are Effective ways to reduce cracks