Development of Simplified Model for Gauge and Plate Crown on Work Roll Shift Mill

In the work roll shift mill, a wide control range of the plate crown can be achieved by using an unsymmetrical work roll profile. The roll deformation of the mill has effected by not only the rolling load and the bending force of the work roll but also the work roll shift position and the work roll profile.The authors have formulated the simplified models of the gauge and the plate crown considering the above effects. These models consist of the mill housing deformation, the roll deformation in the kiss roll state and the roll deformation in the plate rolling, and are derived by dealing strictly with the roll deformation and the mill stretch.The accuracy of the new models has been compared with the point matching method and the actual plate rolling data.It is verified that these models can flexibly follow up the work roll shifting and the unsymmetrical work roll profile.