The design of the squeeze casting process for aluminum alloy frame was carried out

and the filling and solidification process of squeezing casting was simulated to predict occurrence of porosity shrinkage defect.Origination of shrinkage porosities（holes）in squeezing casting aluminum alloy frame was described.By adopting partial pressurization and setting feeding channel

shrinkage defects in the aluminum alloy frame were eliminated.Through reverse local pressurization with pressure of 100 MPa for0.5s

partial pressurization effect exhibits desirable.The practical production reveals that the aluminum alloy frame has the desirable quality with absence of defects

where the as-cast tensile strength and elongation reach 271 MPa and 6.52%

respectively

meeting requirements.