The structural characteristics and process requirements of a new gearbox housing were described

and filling process of the magnesium alloy gearbox cover was simulated and optimized by the CAE technology.By modifying the casting parting face

adjusting total cross-sectional area of the gate

the number of gates and the gate cross-sectional area of the size ratio

as well as reasonable arrangements for the position of overflow system based on the result analysis

defects such as gas-entrappment

unstable filling and longitudinal low temperature zone as well as un-reasonable oxide inclusion distribution in the housing

can be eliminated greatly.