以A356铝合金叶轮为研究对象,对铸件设计了侧注式和顶注式浇注系统。利用Procast软件进行数值模拟分析,预测分析了不同浇注方式下缺陷可能出现的位置。结果表明,侧注式浇注系统充型过程平稳,卷气缩松缩孔现象较少,同时减小了叶片根部与壳体连接部位的有效应力。 Taking A356 aluminum alloy impeller as the research object, the lateral injection type and top injection type casting system were designed for the castings. Procast software was used to carry out numerical simulation analysis and predict the possible position of defects under different casting methods. The results show that the filling process of lateral injection molding system is smooth and the phenomenon of shrinkage shrinkage shrinkage is less, meanwhile, the effective stress of the connection between blade root and shell is reduced.