针对浙江某企业汽车差动继动阀产品合格率较低的问题,本文利用专业模流分析软件Procast对产品现有的压铸结构工艺进行数值模拟研究,观察铸件充型过程和模拟结果,分析缺陷成因。以此为依据,对原铸件压铸结构进行优化设计。结果表明:改进后的铸件毛坯结构能改善该产品的缺陷问题,提高其合格率。 Aiming at the problem that the passing rate of automobile differential relay valve in a certain enterprise in Zhejiang Province is relatively low, this paper uses the professional mold flow analysis software Procast to conduct numerical simulation research on the existing die-casting structure and process of the product, observes the filling process and simulation results, analyzes the defects Cause. Based on this, the original casting die-casting structure optimization design. The results show that the improved blank structure of castings can improve the defect of the product and improve the pass rate.