在已有的铸造凝固过程计算机模拟基础上 ,考虑了对流和辐射对凝固过程热传递的影响 ,开发出在铸件凝固过程中综合考虑热传导、热对流和热辐射的计算程序。针对残余应力的计算 ,结合铸造中落砂工艺 ,对落砂前后不同的传热模型进行了相应的调整。为检验模型的准确性 ,试验研究了弓形应力框试验铸件的浇注过程。对比分析了试验结果和计算结果 ,指出新的模型更接近实际情况 Based on the existing computer simulation of casting solidification process, the influence of convection and radiation on the heat transfer in the solidification process was considered, and the calculation program of heat conduction, heat convection and heat radiation was comprehensively considered in the process of casting solidification. According to the calculation of residual stress, the different heat transfer models before and after falling sand are adjusted according to the falling sand technology in casting. In order to test the accuracy of the model, the pouring process of the arch-shaped box test castings was studied. The test results and the calculation results are compared and analyzed, pointing out that the new model is closer to the actual situation