In the study of lost foam casting process, the process parameters that have a great impact on the quality of lost foam casting are mainly studied: pouring temperature, negative pressure and vacuum degree. Therefore, in order to obtain reasonable pouring process parameters, six groups of different lost foam casting pouring temperature and vacuum negative pressure are arranged to simulate respectively. The scheme is shown in the table.
| Process scheme | Pouring temperature (℃) | Negative pressure (MPA) | Filling time (s) | |
| a | 1420 | -0.04 | 46.84 | Liquid metal has a pause |
| b | 1420 | -0.05 | 48,98 | Stable filling |
| c | 1420 | -0.06 | 45.75 | Serious suspension of molten metal |
| d | 1450 | -0.04 | 44.15 | Liquid metal has a pause |
| e | 1450 | -0.05 | 48.62 | Stable filling |
| f | 1450 | -0.06 | 47.39 | Serious suspension of molten metal |