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用直接差分法对铸件凝固过程进行数值模拟，用Ｐ值法∑ＧＳＣ／Ｒｓ１／２作为判据预测缩松；以铸件的凝固收缩和液面下降来预测集中缩孔；输出采用数字和彩色图象，预测结果与实际基本吻合。
The direct difference method is used to simulate the solidification process of the castings, and the shrinkage is predicted by the P value method ΣGSC / Rs1 / 2 as the criterion. The shrinkage shrinkage is predicted by the solidification shrinkage and liquid drop of the castings. The output is numerically and color-coded As predicted, the predicted result is in line with the actual situation.