Through analyzing technological process for aluminum engine cylinder head

three sets of gating systems

such as pouring with slit top feeding riser

direct pouring with top riser and pouring with half-open and half-enclose runner

were designed.Visualization of filling and solidification of liquid aluminum alloy was carried out by the simulation software.It is presented that the gating system with slit top feeding riser is the desirable design.The optimized processing parameters are as follows:preheating mould at 400 ℃ and pouring at 720 ℃.Based on the optimized processing parameters

the dynamic visualization of filling and solidification of liquid aluminum alloy was conducted

and filling time

solidification time

and distribution and volumetric fraction of possible shrinkage porosity（hole） and gas hole were predicted

providing a reference to the practical production.