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| A rapid calculation method for predicting roll deformation of six-high rolling mill |
| Li Xie1 . An-rui He1 . Chao Liu1 |
| 1 National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract The method to predict roll deformation precisely and efficiently is vital for the strip shape control of six-high rolling mill. The traditional calculation methods of roll deformation, such as the finite element method and the influence function method, have been widely used due to their accuracies. However, the required calculation time is too long to be applied to the real-time control. Therefore, a rapid calculation method for predicting roll deformation of six-high rolling mill is proposed, which employs the finite difference method to calculate the roll deflection and uses a polynomial to describe the non-linear relationship between roll flattening and roll contact pressure. Furthermore, a new correction strategy is proposed in the iteration, where the roll center flattening and the roll flattening deviation are put forward and are corrected simultaneously in the iterative process according to the static equilibrium of roll. Finally, by the comparison with traditional methods, the proposed method is proved to be more efficiency and it’s suitable for the on-line calculation of the strip shape control.
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Received: 21 July 2017
Published: 05 November 2018
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| Cite this article: |
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XIE Li,HE An-Rui,LIU Tiao. A rapid calculation method for predicting roll deformation of six-high rolling mill[J]. Journal of Iron and Steel Research International, 2018, 25(9): 901-909.
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2018, Vol. 25 
