Numerical simulation of low pressure die-cast of magnesium alloy wheel

The simulation of low pressure die casting process of a magnesium alloy wheel is practiced. Using professional casting software, the temperature field during filling and solidification process is simulated, and then the potential defects are predicted and previewed. It is found that there will be shrinkage at the center of hub through analyzing. And this shrinkage can not be eliminated by reducing the pouring velocity. But installing cooling pipe system in the top mold alone is a valid way to enhance the cooling capacity at the areas near the center. The solidified order is adjusted by the cooling pipe system and the shrinkage in the center of the hub is eliminated.