Based on the processing analysis of die casting magnesium alloy engine cylinder body

through orthogonal testing

filling and solidification of liquid magnesium alloy were simulated by the software.The optimized processing parameters were determined as follows:mold preheating temperature of 220 ℃

pouring temperature of 670 ℃

and injecting velocity of 8.5 m/s.In addition

influencing order of parameters on defects was presented.Through applying the optimized processing parameters to dynamically observe the filling and solidification of liquid magnesium alloy

filling and solidification time as well as potential distribution and volumetric fraction of shrinkage porosity（gas hole） were predicted

realizing the optimization pf processing parameters of die casting engine cylinder body.