大型复杂离合器壳体高致密化压铸

High Densification Die Casting of Large Complex Clutch Housing

为了生产大型复杂高致密离合器壳体零件,研究开发了用于高真空压铸的多向高速实时控制抽真空系统。同时,采用数值模拟软件分析压铸过程中的卷气、缩孔缩松、浇不足等缺陷,并进行压铸工艺优化。真空压铸铝合金铸件内部孔洞缺陷的改善状况表明,多向高速实时控制抽真空系统用于压铸机辅助抽真空,几乎完全消除了铸件的气孔、缩松缺陷,产品的内部质量良好,合格率明显提高。

A multi-directional high-speed real-time control vacuum pumping system for high vacuum die casting was developed to produce the large and complex clutch housing parts with compact internal structure. At the same time, the Flow-3D numerical simulation software was used to analyze the defects such as air entrainment, shrinkage porosity and short-run produced in the process of die casting. Based on the simulation results, the die-casting process was optimized and the large and complex clutch housing castings were produced. Results indicates that the application of the multi-directional high-speed real-time control vacuum pumping system to the auxiliary vacuum pumping of the die casting machine, almost completely eliminates the blowhole and shrinkage porosity defects of aluminum alloy die castings. It improves not only the internal quality of the product but also the qualified rate.