Study On Casting Process Numerical Simulation For Grinding Machine Of Double Helix Scroll Cover

According to the CAD drawing of scroll cover, we used the software of Pro/E simulation modeling to simulate the numerical three-dimensional entities pieces, than using the casting simulation software of Anycasting to import, mesh and simulation parameters of sub-settings for the modeling. As the scroll cover's quality depends on different casting processes. In this paper, we simulated the sand casting process for mold filling and solidification, according the simulation of temperature field distribution to predict the location of shrinkage defects. Than comparing with the real scroll cover's defects location by sand casting. The result is the same. So we can prove the casting simulation software is reliable.Using the casting simulation software of Anycasting we predicted the casting defects by different casting processes. Firstly, simulating the scroll cover's sand casting process we predicted the sand casting process's defect by different sand casting process's gravity casting speed. Simulation results show that the higher gravity casting speed the scroll cover's quality is better. But no matter how higher speed it is there are still defects in, we try to cast the scroll cover. Founding the results show that there are pits on the casting surface and there are shrinkage cavities and shrinkage porosities in the castings of gravity force by sand casting. Don't accord with the actual scroll cover's quality requirements. Secondly simulating the scroll cover's resin sand - metal composite centrifugal casting process, we predicted the sand - metal centrifugal casting process's defect by different centrifugal speed. Simulation results showed that the 1100r /min centrifugal speed made the scroll cover's defect is fewer. The speed higher or lower will lead the scroll cover's defects be increase, we try to cast the scroll cover. Founding the results show that the surface quality is good and there is less shrinkage than sand casting process. Finally, simulating the scroll cover's metal-type centrifugal casting process, we predicted the metal-type centrifugal casting process's defect by different centrifugal speed and mold preheating temperature Permutation and combination. Simulation results showed that the 1100r /min centrifugal speed and mold preheating temperature 400℃made the scroll cover quality is the best. We try to cast the scroll cover. Founding the results show that the surface quality is good and there are no defects in the castings by metal-type centrifugal casting, fewer internal defects, defect-free on surface. It can be determined that the metal-type centrifugal casting speed is 1100r /min and mold preheating temperature is 400℃are the optimum technology.