The effect of cryogenic treatment equipment on rolls is mainly reflected in improving their performance and extending their service life . Deep cryogenic treatment can significantly improve the hardness, wear resistance, toughness and thermal stability of the rolls, thereby extending their service life and improving the surface quality of the workpiece
Specifically, the cryogenic treatment equipment alters the crystal structure of the rolls by cooling them to below -150℃, making them more uniform and dense. This change not only enhances the wear resistance and hardness of the rolls, but also eliminates residual stress and defects on the roll surface, reducing the risk of cracking and breaking during operation . In addition, deep cryogenic treatment can refine the grain structure of roll material to make it exhibit better performance under high temperature and high pressure.
In practical application, the surface finish and flatness of the deep cryogenic treatment rolls have been significantly improved, which not only increases the service life of the rolls, but also brings higher precision and quality to the metalworking process .
For example, the grinding intervals of cold-rolled rolls that have undergone deep cryogenic treatment can be extended by about 2 times, reducing auxiliary working time and maintenance costs .
