The quality of roller forgings depends on the following factors!

The quality of the roll forging in the rolling production equipment is higher, and its working environment is the most complex, so the roll will produce residual stress and thermal stress in the preparation process before manufacture and use. The roll forgings are further subjected to cyclic stress in use, including bending, rotation, shear, contact stress and thermal stress and other factors. The distribution of these stresses along the roll body is uneven and constantly changing, due not only to design factors, but also to roll wear, temperature and roll shape changes during service. In addition, abnormal rolling conditions often occur. The rolling rod will also be damaged by thermal stress if it is not cooled properly after use. So roller in addition to wear, but also often crack, fracture, peeling, indentation and other local damage and surface damage. A good quality roll forging should have a better match between its strength, wear resistance and other performance indexes. Not only is it durable under normal rolling conditions, but it also has little damage under some abnormal rolling conditions. Therefore, it is necessary to strictly control the metallurgical quality of the roll or supplement it with external measures to enhance the bearing capacity of the roll forgings. Reasonable roll shape, pass shape, rolling system and rolling conditions can also reduce roll load, avoid local high stress and prolong the life of roller forging. Roll usage depends on three factors:
(1) reasonable selection of rolling mill, rolling material and rolling conditions, as well as rolling shaft forgings;

(2) the material and manufacturing quality of roll forgings;

(3) the use strength and maintenance of roller forgings.