Abstract
A mathematical model of friction coefficient was proposed for the roll force calculation of hot-rolled strips. The online numerical solving method of the roll force calculation formula based on the proposed friction model was developed and illustrated by the practical calculation case. Then, the friction coefficient during hot strip rolling was estimated from the measured roll force by force model inversion. And then, the expression of friction model was proposed by analyzing the calculation process of stress state coefficient, and the model parameters were determined by the shared parameter multi-model nonlinear optimization method. Finally, the industrial experiments demonstrated the feasibility and effectiveness of the related models. The accuracy of the new roll force model based on the built friction model was much higher than that of the traditional Sims model, and it could be applied in the online hot rolling process control.
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Foundation Item: Item Sponsored by Science and Technology Research Program of Hubei Ministry of Education of China (D20161103); Youth Science and Technology Program of Wuhan of China (2016070204010099)
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Li, Wg., Liu, C., Feng, N. et al. Friction Estimation and Roll Force Prediction during Hot Strip Rolling. J. Iron Steel Res. Int. 23, 1268–1276 (2016). https://doi.org/10.1016/S1006-706X(16)30187-X
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DOI: https://doi.org/10.1016/S1006-706X(16)30187-X