利用Magma软件模拟分析了悬置支架的成形过程,得到了铸件成形的最优方案。研究表明,铸件形成缩孔与缩松的原因是铸件壁厚不均匀,有热节产生,同时远离内浇口的区域难以实现压力下补缩和顺序凝固。挤压铸造能消除铸件局部的缩孔与缩松。常用局部挤压补缩,强冷或加激冷块等方法来调节厚大部位的凝固顺序,以实现顺序凝固。针对悬置支架类型零件,提出通过更改内浇口尺寸来达到消除缺陷的方法,并通过实际生产验证了可行性。 Magma software was used to simulate and analyze the forming process of suspension bracket, and the optimal scheme of forming was obtained. The research shows that the shrinkage and shrinkage of the castings are caused by the uneven thickness of the castings and the occurrence of hot joints. At the same time, the areas away from the gates are difficult to achieve under pressure and orderly solidification. Squeeze casting to eliminate the shrinkage of castings and shrinkage. Commonly used local squeeze, strong cold or add shock cooling blocks and other methods to adjust the thick coagulation order in order to achieve the order of solidification. Aiming at the type of suspension bracket, a method of eliminating defects by changing the size of the gate is proposed. The feasibility of the method is verified through actual production.