Defect prediction of large-size aluminum alloy wheel hub in low pressure die casting process

The shrinkage and porosity are common in low pressure casting aluminum alloy wheel hub. Anycast software was used to simulate the filling and solidification process of large aluminum alloy wheel hub. The results show that the location of defects and the volume of defects were predicted. The results show that the position of air entrainment tend to arise in the outer rim of the wheel hub and the inner side of the wheel core during the filling process. During the solidification process, the highest cooling rate of the hub appears at the outer rim, which is 3.202°C/s. The maximum temperature gradient appears at the outer rim, and its value is 64.165 °C/cm. The research can provide practical guidance for reducing casting waste and improving the quality of wheel hub in the casting production of wheel hub.