Simulation study on the centrifugal casting wet-type cylinder liner based on ProCAST

The casting defects that appear the inside surface of a wet-type cylinder liner (WTCL), such as macrosegregation and shrinkage holes, are important factors that affect the quality of the WTCL produced by centrifugal casting. To reduce these defects, a model of centrifugal casting WTCL based on the ProCAST software was constructed in this study, and the simulated result was used to optimize the casting process. The temperature field of the casting WTCL was simulated based on actual solidification, and the solidification process and casting defect were analyzed. Results show that the simulated temperature field is in accordance with the actual process and the casting defects appear in the final solidification zone and inside the sub-surface near the thick-wall side. These defects were later revealed on the surface after machining. The factors that affect the temperature field and the solidification process, such as the cooling-down method, mold structure, coating material, and coating structure, were also analyzed. Based on these analyses, an improved method was proposed.