By numerically simulating the cast process, this paper gets the regulation of temperature field varying during the cast process and of cooling velocity distributing in cast, predict the microstructures and casting defects.

• 通过对铸造过程进行数值模拟，得出浇铸过程中的温度场变化规律以及冷却速度在铸件上的分布规律，预测了铸件的微观组织和铸造缺陷。