Design of gating system and selection of materials played an important role in filling and solidification process of low pressure casting aluminum alloy wheel.The roles of gate sleeve with different materials in gating system were described by comparatively analyzing effects of ceramic gate sleeve and conventional metal gate sleeve on processing stability.The results reveal that conventional metal gate sleeve possesses rapid corrosion behavior and high thermal conductivity

resulting in difficulty to adjust casting process with apparent fluctuation

meanwhile

it is significantly affected by environment and raw material temperature.Ceramic gate sleeve exhibits the features of high corrosion resistance and high insulating behavior as well as high temperature resistance

which can effectively make sure the temperature of feeding channel to ensure the feeding efficiency when the cooling rate of the other location of the wheel is increased

greatly improving the production efficiency.Meanwhile

quality of the aluminum alloy wheel is obviously improved as a result of smooth feeding channel.In addition

the rejected materials of the solidified riser is half of the conventional metal materials.