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Influence mechanism of rolling force on strip shape during tandem hot rolling using a novel 3D multi-stand coupled thermo-mechanical FE model

Journal Article


Abstract


  • During tandem hot rolling (THR), the rolling force plays an important role in strip shape control, but the influence mechanism of the rolling force on the strip shape is still currently unclear. This paper proposes a novel 3D multi-stand coupled thermo-mechanical finite element (FE) model for the THR developed employing a segmentation modelling strategy and data transfer technologies. This developed FE model has been validated by industrial experiments. Besides, the effects of rolling force on the strip shape (including strip crown and flatness) in the THR have been quantitatively studied. Results show that the strip crown increases with the rolling force at each stand, while the regulation efficiency of rolling force on the strip crown decreases continuously from (Finish stand 1) F1 to (Finish stand 7) F7, which is attributed to the significant increase in strip plastic rigidity from F1 to F7. Furthermore, lateral metal flow and strip plastic rigidity have a coupled effect on the regulation efficiency of rolling force on the strip flatness; more precisely, the regulation efficiency is mainly affected by the lateral metal flow in the upstream stand, while it is mainly influenced by the strip plastic rigidity in the downstream stand. These findings not only throw light on the influence mechanism of rolling force on the strip shape, but also offer a way to control and improve the strip shape by employing reasonable rolling force during industrial production.

Publication Date


  • 2022

Citation


  • Li, L., Xie, H., Liu, T., Huo, M., Liu, X., Li, X., . . . Jiang, Z. (2022). Influence mechanism of rolling force on strip shape during tandem hot rolling using a novel 3D multi-stand coupled thermo-mechanical FE model. Journal of Manufacturing Processes, 81, 505-521. doi:10.1016/j.jmapro.2022.07.025

Scopus Eid


  • 2-s2.0-85134428457

Web Of Science Accession Number


Start Page


  • 505

End Page


  • 521

Volume


  • 81

Abstract


  • During tandem hot rolling (THR), the rolling force plays an important role in strip shape control, but the influence mechanism of the rolling force on the strip shape is still currently unclear. This paper proposes a novel 3D multi-stand coupled thermo-mechanical finite element (FE) model for the THR developed employing a segmentation modelling strategy and data transfer technologies. This developed FE model has been validated by industrial experiments. Besides, the effects of rolling force on the strip shape (including strip crown and flatness) in the THR have been quantitatively studied. Results show that the strip crown increases with the rolling force at each stand, while the regulation efficiency of rolling force on the strip crown decreases continuously from (Finish stand 1) F1 to (Finish stand 7) F7, which is attributed to the significant increase in strip plastic rigidity from F1 to F7. Furthermore, lateral metal flow and strip plastic rigidity have a coupled effect on the regulation efficiency of rolling force on the strip flatness; more precisely, the regulation efficiency is mainly affected by the lateral metal flow in the upstream stand, while it is mainly influenced by the strip plastic rigidity in the downstream stand. These findings not only throw light on the influence mechanism of rolling force on the strip shape, but also offer a way to control and improve the strip shape by employing reasonable rolling force during industrial production.

Publication Date


  • 2022

Citation


  • Li, L., Xie, H., Liu, T., Huo, M., Liu, X., Li, X., . . . Jiang, Z. (2022). Influence mechanism of rolling force on strip shape during tandem hot rolling using a novel 3D multi-stand coupled thermo-mechanical FE model. Journal of Manufacturing Processes, 81, 505-521. doi:10.1016/j.jmapro.2022.07.025

Scopus Eid


  • 2-s2.0-85134428457

Web Of Science Accession Number


Start Page


  • 505

End Page


  • 521

Volume


  • 81