A rapid calculation method for predicting roll deformation of six-high rolling mill
| Autor: | An-rui He, Li Xie, Chao Liu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Mechanical equilibrium
business.industry Metals and Alloys Finite difference method 02 engineering and technology Structural engineering Physics::Classical Physics Finite element method Flattening 020501 mining & metallurgy law.invention Physics::Fluid Dynamics Nonlinear system 0205 materials engineering Mechanics of Materials Deflection (engineering) law Roll center Materials Chemistry Rolling mill business |
| Zdroj: | Journal of Iron and Steel Research International. 25:901-909 |
| ISSN: | 2210-3988 1006-706X |
| DOI: | 10.1007/s42243-018-0131-2 |
| Popis: | The method to predict roll deformation precisely and efficiently is vital for the strip shape control of a six-high rolling mill. 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 a six-high rolling mill was proposed, which employed the finite difference method to calculate the roll deflection and used a polynomial to describe the nonlinear relationship between roll flattening and roll contact pressure. Furthermore, a new correction strategy was proposed in the iteration, where the roll center flattening and the roll flattening deviation were put forward and corrected simultaneously in the iteration process according to the static equilibrium of roll. Finally, by the comparison with traditional methods, the proposed method was proved to be more efficient and it was suitable for the online calculation of the strip shape control. |
| Databáze: | OpenAIRE |
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