Design and Optimization of Forming Process for a Low Pressure Casting Aluminum Alloy Wheel Hub
An aluminum alloy low wheel hub was taken as the research object to explore the optimal low-pressure cast-ing process parameters.Design of cooling channels and optimization of experimental parameters for potential shrinkage porosities in the thick parts of the tire bead seat and the connection between the rim and spoke were carried out to solve the probability of defects in this area and improve the yield rate.The numerical simulation results of the ProCAST soft-ware were used as evaluation indicators,and the optimal process parameters were obtained based on orthogonal experi-mental comparison results.The results reveal that with pouring temperature of 680℃,mold temperature of 240℃,the filling pressure of 50 MPa,the holding pressure of 80 MPa,and the holding time of 420 s,the shrinkage porosity of the casting is significantly improved.Multiple cooling schemes based on the pouring condition were designed,and the rela-tively optimized production scheme was presented.
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