电控箱壳体压铸成型的工艺分析及改善  

Process Analysis and Improvement of Die-casting Molding for Electric Control Box Shell

作　　者：梁正涛 管维健 罗宇辉 廖建强 安肇勇 LIANG Zheng-tao;GUAN Wei-jian;LUO Yu-hui;LIAO Jian-qiang;AN Zhao-yong(Guangdong Hongtu Wuhan Die Casting Co.,Ltd.,Wuhan Hubei 430200,China;Guangdong Hongtu Technology Co.,Ltd.,Zhaoqing Guangdong 526108,China)

机构地区：[1]广东鸿图武汉压铸有限公司,湖北武汉430200 [2]广东鸿图科技股份有限公司,广东肇庆526108

出　　处：《铸造设备与工艺》2023年第6期19-23,31,共6页Foundry Equipment & Technology

基　　金：广东省重点领域研发计划项目(项目编号:2020B010186001)。

摘　　要：介绍了一种新能源汽车后驱电控箱主壳体压铸成型的工艺设计过程。开发前期对零件结构进行分析,合理设计浇注及排溢系统。再利用MAGMA仿真软件对压铸填充、凝固等过程进行数值模拟分析,根据模拟结果提出应对措施。针对实际生产过程中发生的气孔、缩孔、抛丸起皮等问题,提出改善方案。实践证明,增加司筒排气针、水尾搭桥增强排气可以改善气孔、起皮;改善浇道结构,通过改变产品填充状态可以改善产品内部质量;增加局部挤压结构,加强补缩,可以解决缩孔。多方面的改善措施保证了产品整体质量,提高了压铸件合格率。The die casting process of the main shell of a new energy vehicle rear-drive electric control box is introduced.Firstly,the structure of the parts is analyzed,and the pouring and overflow system is designed reasonably.The MAGMA simulation software was used to simulate the filling and solidification process of die casting,and the corresponding measures were proposed according to the simulation results.Aiming at the problems of porosity,shrinkage,shot blasting and peeling in the actual production process,the improvement scheme is put forward.The practice results show that air holes and peeling can be improved by adding exhaust needles and other exhaust measures.Changing the filling state of the product by improving the runner structure can improve the internal quality of the product.Adding local extrusion structure to strengthen the feeding can solve the shrinkage hole.These measures ensure the overall quality of the product and improve the qualified rate of die casting parts.

关 键 词：主壳体 压铸工艺 数值模拟 局部挤压 

分 类 号：TG245[金属学及工艺—铸造]