谭诗薪1 郝 新1 胡 兵1 雷四雄1 汪东红2，3 姜 淼3 祝国梁2 疏 达2
(1.中国航发南方工业有限公司； 2.上海交通大学上海市先进高温材料及其精密成形重点实验室； 3.嘉善鑫海精密铸件有限公司)
Numerical Simulation of Centrifugal Pump Shell in Investment Casting
Tan Shixin1, Hao Xin1, Hu Bing1, Lei Sixiong1, Wang Donghong2,3, Jiang Miao3, Zhu Guoliang2, Shu Da2
(1.China Aircraft Southern Industry Co., Ltd.; 2.Shanghai Key Laboratory for High Temperature Materials and Precision Forming, Shanghai Jiaotong University; 3.Jiashan Xinhai Precision Casting Co., Ltd.)
Abstract: The shell structure of centrifugal pump is complex with nine external stiffeners and inside seven blades. The wax injection and casting process design are difficult problems in investment casting process. Numerical simulation and analysis were carried out on the wax injection process of centrifugal pump shell. The forming of wax pattern was realized by split wax pattern assembly. The flow field, isolated liquid phase region and shrinkage distribution of centrifugal pump shell were simulated and analyzed by the ProCAST software, and the casting process was optimized to improve the qualified rate of centrifugal pump shell.
Key Words: Investment Casting, Numerical Simulation, Wax Injection, Casting Process, Centrifugal Pump Shell