ABSTRACT
The basic concept of the SC roll is relatively simple. To compensate for deflection of the backup roll under a rolling load, the SCroll is assembled with a sleeve that is shrink-fitted to the arbor in its middle part as shown in Fig. 25.3. Beyond the shrink-fit zone, there is a gap between the arbor and sleeve that gradually increases toward each roll edge. Under a rolling load, this gap partially closes so that the overall deflection of the sleeve is approximately equal to that of the arbor. Since these deflections are in opposite directions, the overall deflection at the interface between the backup roll and work roll will be substantially reduced. When positive roll bending is applied between the work roll chocks, greater deflections of the work rolls are produced because of the flexibility of the backup roll edges. Thus, the capability of the work roll bending system is increased.
