Abstract This paper presents an analysis of the strip deformation for flat rolling, which is coupled with a heat transfer analysis in the roll bite. From the thermal model, the strip temperature distribution in the deformation zone is estimated. This, together with the strain and strain rate, enables the variation of the flow stress throughout the roll bite to be estimated. Both slipping and sticking friction conditions at the contact interface are considered. This coupled model facilitates an accurate prediction of the roll force, torque and strip temperature for the rolling process. Illustrative results are given in the paper for both hot and cold rolling conditions. The relative importance of each heat source component is discussed, and the effect of the oxide layer, which acts as a thermal barrier for the heat transfer to the work rolls, is highlighted. Simultaneous determination of the friction coefficient at the contact interface and strip flow stress based on measured mill data for hot strip rolling is also illustrated.
Wyd Yuen (Sun,) studied this question.