离心泵壳体精密铸造数值模拟研究  

Numerical Simulation of Centrifugal Pump Shell in Investment Casting

作　　者：谭诗薪 郝新 胡兵 雷四雄 汪东红[2,3] 姜淼 祝国梁 疏达[2] Tan Shixin;Hao Xin;Hu Bing;Lei Sixiong;Wang Donghong;Jiang Miao;Zhu Guoliang;Shu Da(China Aircraft Southern Industry Co.,Ltd.;Shanghai Key Laboratory for High Temperature Materials and Precision Forming,Shanghai Jiaotong University;Jiashan Xinhai Precision Casting Co.,Ltd.)

机构地区：[1]中国航发南方工业有限公司,湖南株洲412000 [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,上海200240 [3]嘉善鑫海精密铸件有限公司

出　　处：《特种铸造及有色合金》2020年第7期770-773,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51705314,51821001);上海交通大学青年启动基金资助项目(18X100040025);两机重大专项资助项目(2017-VII-0008);中国航发自主创新资助项目(ZZCX-2017-045);浙江省博士后择优资助项目。

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。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.

关 键 词：精密铸造 数值模拟 注蜡成形 铸造工艺 离心泵壳体 

分 类 号：TG142[一般工业技术—材料科学与工程] TG249.5[金属学及工艺—金属材料]