The filling and solidification process for the magnesium alloy motorcycle crankcase right cover were carried out with the help of the orthogonal experiment and AnyCasting 2.4software according to magnesium alloy solidification characteristics.The effects of slow injection speed

rapid injection speed

pouring temperature and mold temperature on the filling characteristics

the solidification process and shrinkage porosity defects were investigated.The results show that with the increase of the slow injection speed

filling time of liquid magnesium alloy is shortened and maximum solidification rate is increased

resulting in the deterioration of steady of the filling process.In addition

with increasing in mould temperature

the solidification time is increased.However

the influence level of the above four factors on die casting defects are similar.The defects exist in the thick wall near the thin-walled shell.According to analysis result

the optimization process was presented

and the practical sample was produced.