Prediction of effective parameters on roll crown based on linear regression and finite element method in hot rolling

Abstract

The final hot strip profile is a superposition of the roll initial crown, the roll bending and flattening crown, the roll wearing crown and the roll thermal crown. In this research, linear regression models were proposed to predict the roll wearing crown and the roll thermal crown utilizing experimental data provided by Mobarake Steel Complex. The ABAQUS 6.9 software based on finite element method was also used to simulate the rolling process and to predict the roll force and the roll bending and flattening crown. This simulation was confirmed comparing the obtained roll force with the measured one. The borrowed initial crowns for seven stands of an actual roll schedule for hot strip mill of Mobarake Steel Complex were then used and the strip profile was measured. The predicted strip profile showed a good agreement with the measured one for the mentioned mill. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.