Rolling conditions in hot strip mills and their influence on the performance of work rolls

The mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque. speed. strip thickness) or calculated from figures of the rolling schedule and dimensions of the mill (strip reduction, roll diameter etc.). These variables allow to describe the mechanical rolling conditions of all passes in roughing and finishing mills. These variables should be supplemented by the metallurgical rolling conditions. They then give basic information on the conditions which determine wear (specific load, wear speed) and firecrazing (co-efficient of heat penetration etc.). There is a good chance to use the experiences of other mills with various roll grades by analog comparison as long as the rolling conditions are similar. This method is limited by "abnormal rolling conditions", which require totally different roll grades. although if it would be much better to eliminate the abnormal conditions.