ABSTRACT
In the operation of a commercial cold rolling mill, rapid and convenient work roll changing is of considerable economic importance. The conventional method of roll changing involves the use of an overhead crane and a unit designed to attach to the neck of the roll to be removed from or inserted into the mill. The surfaces of backup rolls, when used in cold rolling mills, are usually given an intermediate finish in the range of 15 to 20 microinches. A smoother finish of the rolls would gradually be roughened by the work rolls and a rougher finish would become gradually polished. The roughness of the surface of the work roll body is important in that it affects both the finish of the rolled strip and the magnitude of the force that must be applied to the rolls to achieve a given reduction.
