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)

摘 要：离心泵壳体铸件外部有9条加强筋、内部有7个叶片，结构复杂。采用分体式蜡模组装工艺实现了蜡模成形，并对离心泵壳体分体式蜡模注射成形工艺进行了数值模拟。通过ProCAST软件对离心泵壳体的流场、温度场、孤立液相区与缩松分布进行了模拟，优化了浇注系统与铸造工艺，提高了离心泵壳体的合格率。

关键词：精密铸造；数值模拟；注蜡成形；铸造工艺；离心泵壳体

中图分类号：TG142;TG249.5  文献标志码A

DOI：10.15980/j.tzzz.2020.07.017

Numerical Simulation of Centrifugal Pump Shell in Investment Casting

Tan Shixin¹, Hao Xin¹, Hu Bing¹, Lei Sixiong¹, Wang Donghong^2,3, 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