在原有SKT大型机床床身铸件铸造工艺基础上,利用AnyCasting模拟了充型和凝固过程,根据计算结果和缺陷发生规律,分析了工艺参数对床身铸件内缩孔率的影响。结果表明,当充型温度为1 300℃左右、充型速度为1.8m/s,冷铁厚度为80mm时,缩孔发生概率最低;浇注试验中,采用优化工艺参数的手段,有效消除了铸件内部可能出现的缩孔缺陷,满足了实际生产的要求。 Based on the casting process of the original SKT large machine bed castings, AnyCasting was used to simulate the filling and solidification process. According to the calculation results and defect occurrence rules, the influence of process parameters on the shrinkage rate of the bed castings was analyzed. The results show that when the filling temperature is about 1300 ℃, the filling speed is 1.8m / s and the chill thickness is 80mm, the shrinkage probability is the lowest. In the pouring test, the optimization of the process parameters can effectively eliminate the casting Shrinkage defects that may occur inside, to meet the actual production requirements.