Using proe software for three-dimensional modeling and ProCAST software as simulation analysis means, the casting process of ductile iron shell parts in lost foam casting was analyzed, and its casting process was optimized.
Firstly, the mold filling and solidification process of nodular iron shell is simulated and analyzed, and the simulation results are compared with the actual production to verify the accuracy of the simulation results. Then, on this basis, the lost foam casting process of the shell is optimized.
The main research contents include:
1) The computer aided design of ductile iron shell is carried out by using proe three-dimensional modeling software.
2) According to the actual production conditions, the composition of casting materials is determined, and the corresponding thermophysical parameter database is established by using lever model.
3) ProCAST simulation software is used to simulate the original process of lost foam casting process of nodular iron shell, predict the location of defects and analyze the causes.
4) The simulation results are compared with the actual production results to verify the accuracy of ProCAST prediction of casting defects.
5) Based on the above, a new pouring system and riser scheme are designed, and then several groups of different schemes are used to optimize the pouring temperature and vacuum degree, and the new process scheme is simulated.
6) Finally, the optimization scheme of lost foam casting process is summarized to provide guidance for practical production.