Study On The Squeeze Casting Technique And Mould Design Used On Unconventionality Scale-board

The common casting still was being used in unconventionality scale board's formation. Common castings have been unable to satisfy the higher requirements at present while a series of questions were uncovered in traditional sand casting process. In this study, the technique was studied systemically through choices of research method and formation technology, mold design, numerical simulation of process, optimize of mold and so on.Firstly, indirect squeeze casting been used on the squeeze casting process. Designed two kinds of mold:experiment mold and batch production mold. Designed the chucking fixture and punch can be exchange partly. Numerical simulation of process used as the research method, because of the special structure and the big size of the machine.In order to realize the precise control for squeeze casting process of the high manganese steel unconventionality scale board, the numerical simulation was conducted on both filling and solidification processes with finite element simulation software, temperature and velocity field being researched. And the visual observation on the filling and solidification processes of the molten alloy was performed.Then the technology being optimized by used the theoretical basis. The simulation result shows that the optimized technological parameters are as follows. The casting temperature for the die is 500℃.The specific pressure is 200MPa, and the holding time is 60s. And the structure of the mold been optimized, solved the swirl flow of the molten alloy. It is demonstrated that the filling and solidification processes of the casting are successful and reasonable, and the quality of the casting is good. The results can be used in manufacture to improve work efficiency. The residual stress of the casting cooling to the ambient temperature was gained after calculation and date exchange program was compiled. The top residual stress was 11.06MPa. It's very much shorter than the yield limit 350MPa. It is safe.Then the relationship in filling, porosity, solidification time and the technological parameters was simulated with different factors and different levels being chosen in the virtual orthogonal experiment.