Centrifugal casting simulation and physical field analysis of ZL107

Centrifugal casting is one of the commonly used production methods for cylinder liner preparation. Al-Si-Mg centrifugal casting alloys have been extensively studied and applied, but as the matrix material, its mechanical properties still cannot meet the service requirements in a severe working environment with high strength, large load, or high temperature. Therefore, most Al-Si-Mg centrifugal casting alloys can only bear medium and low loads and operate in an environment below 150 °C. It has greatly restricted the development of industrial and civil fields. In this paper, ZL107 alloy was taken as the research object and Fluent 2021R1 simulation software was used to explore the filling characteristics of Al-Si-Cu alloy under centrifugal casting conditions. When the casting temperature was 770 °C, the initial casting temperature was 230 °C, the rotation speed was 1400 rpm and the casting speed was 0.45 m/s, the casting filling and solidification processes were analyzed based on the temperature field and velocity field. The test shows that there are large temperature differences between the outer surface and the inner surface of the casting, axial and radial, which are the parts where defects exist. The approximate area of the defect is estimated, which has a certain guiding role.