根据消失模铸造充型过程的特点,提出了一种消失模铸造液态金属充型流场、温度场及界面推移的计算模型。用人工神经网络方法计算了充型过程中不同时刻液态金属模样界面的位置。结合界面位置及边界条件,通过求解N-S方程和能量方程计算了消失模铸造充型过程的流场及温度场。界面推移过程的实验表明,模拟计算结果在充型形态及充型时间方面与实际测试结果相符。 According to the characteristics of the process of mold filling during lost foam casting, a computational model of the flow field, temperature field and interface transition of liquid metal filling is proposed. The position of liquid metal interface at different time during filling process was calculated by artificial neural network method. Combining with the interface location and boundary conditions, the flow field and temperature field in the process of filling process of the lost foam casting were calculated by solving the N-S equation and energy equation. Experiments on the process of interface transition show that the simulation results are consistent with the actual test results in terms of filling form and filling time.