通过将空心直浇道消失模铸造完型过程处理为液态金属在普通砂型中的流动和置换消失模样的流动，实现了带有空心直浇道消失模铸造充型过程的数值计算，模拟对比分析了空心、实心直说道消失模铸造及其与普通砂型铸造充型模式的差异． Through the hollow sprue lost foam casting process for the treatment of liquid metal in the ordinary sand flow and the replacement of the disappearance of the flow pattern to achieve with a hollow spout lost foam casting filling process of numerical calculation, analog comparative analysis Hollow, straight to say that the lost foam casting and ordinary sand casting filling mode differences.