ABSTRACT
This chapter identifies the sources of heat generation in the roll bite and the modes of heat transfer affecting roll and strip temperatures. Mathematical models are presented for the computation of these temperatures for single and multistand mills and, lastly, typical mill coolant systems. Friction between the surfaces of the work rolls and the strip is necessary to transmit deformation energy from the former to the latter. As a consequence of the shearing forces established at the roll surfaces by this friction and because of the relative slippage that must occur between the rolls and the strip, there is frictional energy dissipation at each roll-strip interface.The dissipation of frictional energy along each arc of contact in the roll bite must, under conditions of high-speed cold rolling, create relatively high transient temperatures on the surfaces of the rolls and strip.
