Aiming at high defects and low yield rate in low-pressure casting totally enclosed electrical aluminium alloy combination tanks

through the ProCAST software for simulating the original casting process as well as the comparative testing

and combining the practical production

the optimized parameters were determined.Through modifying the shape and adjusting gating system

the casting defects were eliminated.The results reveal that with pouring temperature of 700℃

the filling pressure of54 kPa and mould temperature of 300℃

through increasing the casting lower wall thickness by 1.5 mm to obtain rational thickness gradient

as well as enlarging original casting sprue width from 12.5 mm to19.5 mm

the casting defects can be relieved greatly

improving the quality of castings.