运用微型计算机和数值模拟技术 ,模拟了喷油泵座等球墨铸铁件的不同工艺方案的凝固过程 ,并模拟测试了型砂退让性值对铸件缩孔缩松的影响 实验结果和生产验证表明 ,该技术能准确模拟铸件的缩孔缩松缺陷 ,为铸造工艺优化提供了科学的依据 The micro-computer and numerical simulation technology were used to simulate the solidification process of different process schemes such as injection pump seat and other ductile iron castings. The effect of concession value of cast sand on shrinkage shrinkage of castings was simulated. The experimental results and production proves that this technology Can accurately simulate the shrinkage shrinkage defects casting, casting process optimization provides a scientific basis