See table for common roll materials and uses. The performance and quality of a roll generally depends on its chemical composition and manufacturing method and can be evaluated by its microstructure, physical and mechanical properties, and the type of residual stresses present inside the roll (see Roll Inspection). The use effect of the roll in the rolling mill depends not only on the roll material and its metallurgical quality, but also on the use conditions, roll design, operation and maintenance. The roll use conditions of different types of rolling mills are very different, and the factors causing the differences are:
(1) rolling mill conditions. Such as rolling mill type, rolling mill and roll design, hole design, water cooling conditions and bearing types, etc .;
(2) rolling conditions such as rolling material variety, specifications and deformation resistance, reduction system and temperature system, output requirements and operation;
(3) Requirements for product quality and surface quality.