针对铸钢框架生产过程中可能出现的缺陷,建立了计算模型并进行网格剖分,设定了材料的热物性参数、界面换热系数及边界条件,并根据实际生产工艺进行计算机模拟。结果表明:在铸件内部形成缩孔缺陷部位与实际浇注中缺陷部位相吻合,说明模拟计算前处理设置合理,为后续的工艺优化模拟计算打下良好的基础。 Aiming at the defects that may appear in the process of steel frame production, the calculation model and the meshing are established. The thermal physical parameters, the interface heat transfer coefficient and the boundary conditions are set and the computer simulation is carried out according to the actual production process. The results show that the formation of shrinkage defects in the casting is consistent with the defects in the actual casting, which shows that the pretreatment of the simulation calculation is reasonable and a good foundation for subsequent simulation of process optimization is laid.