Proper selection of rollers to meet production requirements

The residual stress and thermal stress will occur in the preparation process before the roll is made and applied. The application is further subjected to the effects of various periodic stresses, including tortuousness, change, shear, contact stress and thermal stress. The distribution of these stresses along the roller body is uneven and constantly changing, which is not only due to planning factors, but also due to the constant changes in wear, temperature and roll shape during the application of the roller. In addition, rolling conditions often present abnormal conditions. If the roller is not cooled properly after application, it will also be damaged by thermal stress. So the roller in addition to wear, but also often crack, fracture, peeling, indentation and other parts of the damage and appearance damage. A good roll, its strength, wear resistance and other various performance indicators should be a better match. In this way, not only under normal rolling conditions durable, but also in the presence of some abnormal rolling conditions less damage. Therefore, the metallurgical quality of the roll should be strictly controlled or supplemented by external measures to enhance the bearing capacity of the roll.

There are many kinds of rolling mills for producing long material products. Therefore, the selection of rolling mill types, the layout, the selection of roll materials and the determination of roll sizes.