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Research on the generation and control of high-order flatness during the controlling of titanium strip profile by the intermediate taper roll in a 20-high mill

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Abstract

The wide-width titanium strip cold rolling, as an efficient titanium material processing technology, has been widely concerned. During the cold rolling process, high-order flatness defects occur frequently, seriously restricting the improvement of titanium product quality. To analyze the mechanical deformation behavior of titanium strips during cold rolling, and explore the influence of entrance and exit profile index on the generation of high-order flatness defects. An integrated coupling rolling model of the roll system and the strip has been established based on the FEM method, and the accuracy of the model has been verified using on-site measured data. The research results show that when the taper or coning amount of the first intermediate roll increases, if the entrance profile index remains unchanged, the exit profile index will significantly decrease, and the high-order deflection deformation of the work roll axis will occur, ultimately leading to high-order flatness defects. When using the first intermediate taper roll to control the exit profile index, if the exit profile index remains unchanged, the entrance profile index increases by 10 μm, and the coning amount will increase by 8.3mm. Therefore, a plan based on the optimization of the entrance profile index has been proposed, which takes into account both the profile and the high-order flatness, to achieve a smaller coning amount to meet the exit profile index and decrease the risk of high-order flatness. The industrial test results show that after the implementation of the plan, the occurrence rate of high-order flatness decreased by an average of 34.42%.

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Acknowledgements

The authors would like to express sincere gratitude to the National Engineering Technology Research Center of Flat Rolling Equipment for providing the simulation equipment and the Hunan Xiangtou Goldsky Titanium Metal Co., Ltd for providing the test opportunity.

Funding

The authors gratefully acknowledge the support from the National Natural Science Foundation of China (No. 52004029).

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Authors and Affiliations

  1. National Engineering Technology Research Center of Flat Rolling Equipment, University of Science and Technology Beijing, Beijing, 100083, China

    Guanyu Zhou, Tieheng Yuan & Chao Liu

  2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, 100083, China

    Anrui He

  3. Hunan Xiangtou Goldsky Titanium Metal Co., Ltd, Changsha, 410006, China

    Zhengqiao Liu

  4. China Academy of Machinery Science and Technology, Beijing, 100044, China

    Yi Qiang

Authors
  1. Guanyu Zhou
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  2. Anrui He
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  3. Tieheng Yuan
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  4. Chao Liu
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  5. Zhengqiao Liu
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Contributions

GZ is responsible for writing the entire paper and conducting the simulation model. AH supervised the entire paper. TY checked the validation results. CL provided advice on the conclusion. ZL guided the industrial test. YQ provided advice on the abstract. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Anrui He.

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The authors declare no competing interests. The raw/processed data required to reproduce these findings cannot be shared at this time due to technical or time limitations.

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Zhou, G., He, A., Yuan, T. et al. Research on the generation and control of high-order flatness during the controlling of titanium strip profile by the intermediate taper roll in a 20-high mill. Int J Adv Manuf Technol 129, 485–495 (2023). https://doi.org/10.1007/s00170-023-12321-0

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  • DOI: https://doi.org/10.1007/s00170-023-12321-0

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