According to thin-walled bracket structural characteristics and quality requirement

the design of sand casting process for the thin-walled aluminum alloy bracket was carried out.The View Cast software was used for the filling and solidification process.The simulated results show that a large number of shrinkage cavity and shrinkage defects appear in the solidification process as a result of the failure to completely fill the mold because of the thin wall thickness of the bracket.Origination of the defects was described

and the gating system was optimized.Through selecting the position of the riser and the cold iron

designing the size of the riser and the cold iron

the simulated results reveal that the optimized casting process can eliminate the casting defects and meet the requirement of the casting production.