The performance quality of rolling mill generally depends on its composition and production method, and can be evaluated based on its microstructure, physical and mechanical properties, as well as the type of residual stress inside the rolling mill. The effectiveness of using rollers in rolling mills depends not only on the roller material and metallurgical quality, but also on the scope of application, roller design concept, and actual operation and maintenance. There are significant differences in the applicable range of rollers for different types of rolling mills, which are caused by the following factors: (1) necessary conditions for rolling mills. Such as rolling mill type, rolling mill and rolling mill design concept, pass design, water cooling conditions, and bearing type;

Common roller colors and main uses. The performance quality of a rolling mill usually depends on its composition and production method, and can be evaluated based on its microstructure, physical and mechanical properties, as well as the type of residual stress present inside the rolling mill (such as rolling mill testing). The effectiveness of using rolling mills in rolling mills depends not only on the rolling mill material and metallurgical industry quality, but also on the scope of application, rolling mill design scheme, and actual operation and maintenance. There are significant differences in the applicable range of rolling mill rolls for different types of rolling mills, which are caused by the following factors: (1) rolling mill standards. Such as rolling mill type, rolling mill and rolling mill design scheme, mold structure design, water cooling conditions, and bearing type;

​轧辊断裂缘故：一、脆断，该类轧辊断裂面样子比较平整，断裂面周围辊身表层比较齐整；二、韧性断裂，该类轧辊断裂面样子呈"蘑菇头"状，断裂面周边的辊身亦成破碎状破碎。将两者核对发现，本次断辊事故的断辊方式为韧性断裂。脆断和韧性断裂都是由于轧辊地应力超出芯部强度所造成的。