The Simulation Research Of Stress And Casting Process Of Pump Body

For studying the reasonable of the casting process design of pump body,and the stress problems of casting.In this paper,using the casting numeral simulation software Z-Cast,simulating the filling velocity field,filling time of running system,according the direction of the velocity,optimizing the design of ingate.According to the filling time field, analysis the filling effect,optimizing the feeding system,including feeders and chills.In the casting process,casting stress can lead to the problems,for example crack,deformation.for study the forming theory,using casting simulation software ProCAST,applying the linear elastic,analysis the model of forming place and development in the mushy zone.According to the stress development on the casting surface,building a stress model, including Stress Generating Zone,Stress Development Zone and Stress Accumulation Zone.Found the stress generate zone,generate in the connection and thin-wall of casting;stress development zone is near the generate zone and developing on the flat.the position of stress accumulation zone is uncertainty,may be far away from the generating zone,maybe forming stress gradient near the generating zone.Studying the influence of the chills for stress.The positions of chills can generate the stress,and the chill flat had a bigger stress than without chills.