车用水箱弯管接头熔模铸件工艺优化  

Investment Casting Process Optimization of Water Tank Elbow Joint for Vehicle

作　　者：丁华锋 金先志 陈涛 潘俊杰 Ding Huafeng;Jin Xianzhi;Chen Tao;Pan Junjie(School of Automotive and Traffic Engineering,Hubei University of Arts and Science;Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle;Xiangyang Liqiang Machinery Co.,Ltd.)

机构地区：[1]湖北文理学院汽车与交通工程学院,湖北襄阳441053 [2]纯电动汽车电力系统设计与测试湖北省重点实验室 [3]襄阳市立强机械有限公司

出　　处：《特种铸造及有色合金》2022年第2期248-252,共5页Special Casting & Nonferrous Alloys

基　　金：湖北省教育厅科学技术研究计划青年人才资助项目(Q20202602)。

摘　　要：经验法熔模铸造成形的弯管接头零件在通孔内壁和底座圈上都普遍存在缩松。利用ProCAST软件,对弯管接头铸件进行缺陷分析,分别从浇注系统的优化和增设冒口及冷铁入手,研究两种可以降低铸件缩松率的方案。对比发现,对浇注系统进行优化为最优方案,并在此基础上设计了正交试验。结果表明,在浇注温度为1 520℃、浇注速度为0.6 kg/s、型壳预热温度为1 120℃下,缩松率最大为1.44%,有效提高了产品品质。The shrinkage porosities in elbow joint parts formed by empirical investment casting generally exists on the inner wall of hole and base ring. The ProCAST simulation software was utilized to analyze the defects of elbow joint castings. With the optimization of gating system and the addition of riser and cold iron, two schemes for reducing the shrinkage rate were proposed. The comparative analysis reveals that the optimization of gating system is the optimal scheme and the orthogonal test is designed. The results indicate that when the pouring temperature is 1 520 ℃, pouring speed is 0.6 kg/s and shell preheating temperature is 1 120 ℃, the maximum shrinkage rate is 1.44%, effectively improving the quality of the product.

关 键 词：熔模铸造 PROCAST 弯管接头 工艺优化 

分 类 号：TG249.5[机械工程—精密仪器及机械]