Water simulation study on filling process with vertical split gating system

A transparent simulation mould was designed. The filling process of aluminum alloy using vertical split in-gate gating system in low pressure casting, and the effects of the size of vertical split in-gate gating system on the filling process have been simulated and studied with water. Researches show that at the onset arid last stage of the filling process respectively, two circles with opposite rotation direction appear in mould cavity. Transformation of the rotation direction is the result of the outward movement of filling path. In the stage of stable filling, liquid fills in mould with a specific angle and width after rising along a distance in the vertical cylinders. Critical length of liquid rising in vertical cylinders increases with the increase of cross section area of vertical cylindrical cavities, the increase of width and the decrease of thickness of vertical split in-gate.