根据热力学计算所得到的三种牌号的 FeCrAl 合金的热物性参数，基于铸件的几何形状和尺寸建立计算域模型和剖分网格。采用有限元法，模拟 FeCrAl 合金铸造过程中的金属液的充型过程、熔体流动、热量传递和凝固进程，并采用等效液面下降法来计算铸件的一次和二次缩孔、采用 Niyama 判据来预测凝固过程中铸件中各部分缩松出现的可能性，以及可能产生的缩松缩孔的形貌。以生产过程中所记录的铸件数据，修正模型中不确定的参数及边界条件，提高计算模型的计算精度并验证模型。

Based on the thermo-physical parameters of three grades of FeCrAl alloy obtained by thermodynamic calculation, the computational domain model and the meshes were established based on the geometrical shape and size of the casting. The finite element method is used to simulate the filling process, melt flow, heat transfer and solidification process of the molten metal during the casting process of FeCrAl alloy. The equivalent liquid level drop method is used to calculate the primary and secondary shrinkage cavity of the casting, and the Niyama criterion is used to predict the possibility of shrinkage porosity in each part of the casting during the solidification process. And the morphology of shrinkage porosity and porosity that may be produced. The casting data recorded in the production process are used to correct the uncertain parameters and boundary conditions in the model, improve the calculation accuracy of the calculation model and verify the model.