基于有限差分法 ,分别采用模数法和近似传热法实现了对任意形状铸件凝固时间的快速计算 ,由此可获得铸件的热节分布规律 ,为设计人员从铸件结构工艺性的角度校核结构设计的合理性以及为铸造工艺人员设计铸件的补缩系统提供了可靠依据。通过对航空铸件进行验证 ,表明所建立的模型在改进铸件开发过程中具有较好的适用性。 Based on the finite difference method, rapid calculation of the solidification time of any shape castings is realized by the modulus method and the approximate heat transfer method, respectively. Thus, the rule of hot section distribution of the castings can be obtained, which can be used by designers to check the cast structure processability The rationality of structural design and casting technology for the design of castings casting system provides a reliable basis. The verification of aeronautical castings shows that the established model has good applicability in improving the development of castings.