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Simulation and control of high-order flatness defect in rolling wide titanium strip with 20-high mill

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Abstract

In the wide titanium strip cold rolling process, the high-order flatness defect is one of the most difficult problems to be solved. Based on the finite element method, considering the anisotropic mechanical characteristics of titanium, an implicit integration calculation model of rolls-strip for 20-high mill was developed, which can simulate the dynamic rolling process. The model was used to analyze the adjustment characteristics of high-order flatness on the 20-high mill. The simulation revealed as the increasing of the 1# and 7# AS-U or 2# and 6# AS-U reduction adjustment, the high-order flatness defect was more aggravated; and as the increase of 3# and 5# AS-U or 4# AS-U reduction adjustment, the high-order flatness defect was alleviated to some extent. In addition, the high-order flatness cannot be effectively adjusted by roll shifting. Finally, the industrial test showed that increasing 4# AS-U reduction adjustment can effectively relieve the high-order flatness defect. After 6 months of strategy test, the high-order flatness defect rate decreased by 33.47%.

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Acknowledgements

The authors would like to express sincere gratitude to the National Engineering Research Center for Advanced Rolling Technology 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 Guangxi Special Funding Programme for Innovation-Driven Development (GKAA17202008) and the National Natural Science Foundation of China (No. 51674028, No. 52004029).

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Authors and Affiliations

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

    Guanyu Zhou, Hui Li, Anrui He & Chao Liu

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

    Wenquan Sun

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

    Zhengqiao Liu & Cong Han

Authors
  1. Guanyu Zhou
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  2. Hui Li
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  3. Anrui He
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  4. Chao Liu
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  6. Zhengqiao Liu
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  7. Cong Han
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Contributions

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

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Correspondence to Anrui He.

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Zhou, G., Li, H., He, A. et al. Simulation and control of high-order flatness defect in rolling wide titanium strip with 20-high mill. Int J Adv Manuf Technol 120, 5483–5496 (2022). https://doi.org/10.1007/s00170-022-09097-0

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