(National & Local Joint Engineering Laboratory of Advanced Metal Solidification Forming and Equipment Technology, Kunming University of Science and Technology, Kunming 650093, China)
In recent years, low cost, long life and high production efficiency are the main development directions of composite roll technology. Some typical industrial components of centrifugal casting composite rollers, such as bimetallic composite roller and grinding roller ring are listed. By comparing the properties of roller rings with different materials and processes at home and abroad, it is found that the centrifugal casting composite roller has excellent performance and long life, and is widely used in cement and crushing industry. In this paper, the material selection and technical development of composite roller are summarized. The composite method of ductile cast iron, high chromium cast iron, high manganese steel, high speed steel and other materials is introduced, which can improve the service life of the workpiece under different working conditions and reduce the cost. The influences of the process parameters such as cooling speed, pouring temperature, centrifugal speed, pouring time on the microstructure and performance of metal-based ceramic composite roller reinforced by centrifugal casting particles are summarized. Finally, the main problems and possible development direction of centrifugal casting composite roller are put forward.