Figure 1 shows the simulation of velocity field of molten metal. It can be seen from figure 1A that the molten metal spreads to both sides at the inlet. When the filling time is 30s, the direction of liquid flow can be tracked, which shows that the liquid metal rotates against the inner wall of the cavity, which is consistent with the direction of mold rotation. See Figure 1b, and the vector arrow is the flow direction of the liquid metal.
Figure 2 shows the flow field of molten metal at different times in the mold. It can be seen that at 30.0, 45.0, 61.6 and 90.3s, the mold filling rate of molten metal is 33.3%, 50.0%, 68.1% and 100% respectively. Under the action of centrifugal force, the molten metal first sticks to the inner wall of the mold in a circular motion, and gradually widens to both sides to form a thin layer of molten metal. Since the inlet is located on the left side of the horizontal centrifugal casting of the cylinder liner, the liquid metal first fills the left mold cavity. With the continuous increase of the liquid metal, the liquid metal on the left side of the mold cavity gradually thickens and continues to spread to the right until the whole mold cavity is filled.
Figure 2c shows the flow field distribution of liquid metal just after the layout, with a time of 61.6s. It can be seen that the thickness of the molten metal is not uniform at this time, which is thick on the left and thin on the right, and the thickness of the cloth layer is very thin. After that, the liquid metal became thicker and the thickness of the liquid metal layer gradually became uniform until the end of mold filling. The time was 90.3s, as shown in Figure 2d. After the filling of horizontal centrifugal casting of cylinder liner, the velocity of molten metal is stable and increases with the radius in a gradient.