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使用Sola-Vof法计算了三维实际铸件的充型过程,提供了随时间变化的充型过程体积函效的变化和分布,并据此计算了充型过程中的传热现象,得到了考虑充型过程影响的初始温度场分布。计及初始温度场的分布,进行了凝固过程的数值模拟和缩孔缩松缺陷分析。针对工厂实际铸钢件蒸汽室盖进行了模拟计算和验证。结果表明,对大中型铸件,虽然浇注过程中很少发生凝固,但初始温度分布相当不均匀,考虑充型过程传热现象,可以使随后的凝固模拟及缺陷分析精度显著提高。
The method of Sola-Vof was used to calculate the filling process of three-dimensional actual castings, and the variation and distribution of the volumetric efficiency of the filling process over time were provided. Based on this, the heat transfer phenomenon in the filling process was calculated, The Initial Temperature Distribution Affected by the Type Process. Taking into account the distribution of initial temperature field, the numerical simulation of solidification process and the analysis of shrinkage porosity shrinkage were carried out. The calculation and verification of the steam chamber lid of the actual steel castings were carried out. The results show that for medium and large castings, the initial temperature distribution is rather uneven even though pouring is rare. Considering the heat transfer during filling process, the subsequent solidification simulation and defect analysis accuracy can be significantly improved.