The casting process for the shell-pressing was designed

simulated and optimized. Two kinds of gating systems were initially designed. ProCAST software was used to simulate the filling process

defect distribution and process improvement. According to the simulated results

the mid-pouring gating system was adopted. The simulated results reveal that the process of the mid-pouring gating system is completed after 3.99 s. Shrinkage holes and porosity defects at the bottom of the flange and the core of the casting can be observed

which are mainly related to the uneven distribution of the solidification field and the failure to obtain timely feeding. The process needed to be further optimized. An open riser is set at the flange of the casting for feeding

and three heating risers are used to improve the temperature field. In the final simulation results

the optimized process significantly improves the temperature field distribution

adjusts the solidification sequence and reduces defects

ensuring a higher process yield rate of castings.