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CVC cyclical shifting mode and its working characteristics for the mills of CSP

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Abstract

The compact strip production (CSP) line has two different rolling schedules: rolling strips with same width or rolling strips with different widths alternately. However, the continuously variable crown (CVC) work rolls used in the CSP production line do suffer from non-uniform wear in conventional shifting mode. A cyclical shifting mode for CVC work rolls is developed to uniform the work roll wear and to improve the quality of strip cross section. In this shifting mode, the work rolls shift with fixed mode, while the changes of strip crown caused by shifting are compensated by the bending force. A mathematical model is introduced to explain the working characteristic of the CVC cyclical shifting mode. A 3D finite element model of roll stacks for 1800 mm CSP hot rolling mill is built to calculate the parameters in the mathematical model. The working principle for the CVC cyclical shifting mode is determined as well. The proposed shifting mode has been implemented in the 1800-mm CSP production line. The work roll wear is more uniform by using the new shifting mode. This has resulted in the rolling length increasing by 20 % and the consumption of work roll decreasing by 14 %.

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References

  1. John S, Sikdar S, Mukhopadhyay A, Pandit A (2006) Roll wear prediction model for finishing stands of hot strip mill. Ironmak Steelmak 33(2):169–175

    Article  Google Scholar 

  2. Peng KX, Zhong H, Zhao L, Xue K, Ji YD (2014) Strip shape modeling and its setup strategy in hot strip mill process. Int J Adv Manuf Technol 72:589–605

    Article  Google Scholar 

  3. Hu ZY, Yang JM, Zhao ZW, Sun H, Che HJ (2015) Multi-objective optimization of rolling schedules on aluminum hot tandem rolling. Int J Adv Manuf Technol. doi:10.1007/s00170-015-7909-1

    Google Scholar 

  4. Mancini E, Campana F, Sasso M, Newaz G (2012) Effects of cold rolling process variables on final surface quality of stainless steel thin strip. Int J Adv Manuf Technol 61:63–72

    Article  Google Scholar 

  5. Takami KM, Dahlquist JME, Lindenmo M (2011) Multivariable data analysis of a cold rolling control system to minimise defects. Int J Adv Manuf Technol 54:553–565

    Article  Google Scholar 

  6. Castaneda RS, Lara AMG, Solis RDM, Lebrun CAV (2014) Development of mathematical model for control wear in backup roll for hot strip mill. J Iron Steel Res Int 21(1):46–51

    Article  Google Scholar 

  7. Moazeni B, Salimi M (2015) Investigations on relations between shape defects and thickness profile variations in thin flat rolling. Int J Adv Manuf Technol 77:1315–1331

    Article  Google Scholar 

  8. Sikdar S, Kumar S (2009) Neural network model of the profile of hot-rolled strip. Int J Adv Manuf Technol 42:450–462

    Article  Google Scholar 

  9. Bald W, Beisemann G, Feldmann H, Schuttes T (1987) CVC. Continuously variable crown rolling. Iron Steel Eng 64(3):32–41

    Google Scholar 

  10. Bald W, Klamma K (1988) CVC technology for cold rolling mills: plant examples. Iron Steel Eng 65(5):24–28

    Google Scholar 

  11. Klockner J (1987) CVC technology for hot rolling mills. Metal Plant Technol 10(1):54–60

    Google Scholar 

  12. Li HB, Zhang J, Cao JG, Cheng FW, Hu WD, Zhang Y (2012) Roll contour and strip profile control characteristics for quintic CVC work roll. Chin J Mech Eng 48:24–30

    Article  Google Scholar 

  13. Li HB, Zhang J, Cao JG, Wang ZM, Wang Q, Zhang SS (2010) Analysis and selection of crown control ranges for CVC work rolls in CSP hot rolling. J Univ Sci Technol Beijing 32:118–122

    Google Scholar 

  14. Wei GC, Cao JG, Zhang J, Hao JW, Cheng G (2007) Optimization and application of CVC work roll contour on 2250 hot strip mills. J Cent S Univ (Sci Technol) 38:937–942

    Google Scholar 

  15. Kong XW, Xu JZ, Gong DY, Liu XH (2002) Study on schedule free rolling with flat roll on F7 finish stand. Iron Steel 37:26–29

    Google Scholar 

  16. Shao J, He AR, Yang Q, Guo HW (2011) Varying shifting stroke strategy of work rolls in hot rolling. J Univ Sci Technol Beijing 33:93–97

    Google Scholar 

  17. Yang GH, Cao JG, Zhang J, Song P, Yan TL, Rao KF (2012) Profile and flatness control technology with a long shifting stroke on wide non-oriented electrical steel sheets. J Iron Steel Res Int 19:31–35

    Article  Google Scholar 

  18. Li WG, Guo ZH, Yi J, Liu XH (2012) Optimization of roll shifting strategy of alternately rolling in hot strip mill. J Iron Steel Res Int 19:37–42

    Article  Google Scholar 

  19. Li WG (2013) Simulation-based multi-objective optimization for roll shifting strategy in hot strip mill. J Cent S Univ (Sci Technol) 20:1226–123

    Article  Google Scholar 

  20. Zhang J, Chen XL, Xu YH, Yang MS (1993) Research on the roll shape of 4-high mill with variable crown by axial shifting. J Iron Steel Res 5:25–30

    Google Scholar 

  21. Li WG, Liu XH (2014) Roll shifting strategy with varying stroke and its optimization research in hot strip mill. J Iron Steel Res 26:21–26

    Google Scholar 

  22. Ginzburg VB (1993) High-quality steel rolling: theory and practice. 489Q4 Marcel Dekker, New York, pp 561–566

  23. Linghu KZ, Jiang ZY, Zhao JW, Li F, Wei DB, Xu JZ, Zhang XM, Zhao XM (2014) 3D FEM analysis of strip shape during multi-pass rolling in a 6-high CVC cold rolling mill. Int J Adv Manuf Technol 74:1733–1745

    Article  Google Scholar 

  24. Yu HL, Tieu K, Lu C, Deng GY, Liu XH (2013) Occurrence of surface defects on strips during hot rolling process by FEM. Int J Adv Manuf Technol 67:1161–1170

    Article  Google Scholar 

  25. Lin JC (2002) Prediction of rolling force and deformation in three-dimensional cold rolling by using the finite element method and a neural network. Int J Adv Manuf Technol 20:799–806

    Article  Google Scholar 

  26. Cao JG, Ya N, Mi KF, Song P, Yan TL (2009) Profile and flatness control technology for schedule-free rolling in hot wide strip mills. J Univ Sci Technol Beijing 31:481–486

    Google Scholar 

  27. Yang GH, Zhang J, Li HB (2013) Comparison between the vertical rigidity characteristics of roll systems for wide strip cold rolling mills. J Univ Sci Technol Beijing 34:576–581

    Google Scholar 

  28. Cao JG, Liu SJ, Zhang J, Song P, Yan TL, Zhou YZ (2011) ASR work roll shifting strategy for schedule-free rolling in hot wide strip mills. J Mater Process Technol 211:1768–1775

    Article  Google Scholar 

  29. Dong Q, Cao JG, Li HB, Zhou YS, Yan TL, Wu ZW (2015) Analysis of spalling in roughing mill backup rolls of wide and thin strip hot rolling process. Steel Res Int 86(2):129–136

    Article  Google Scholar 

  30. Li YL, Cao JG, Yang GH, Wen D, Zhou YZ, Ma HH (2015) ASR bending force mathematical model for the same width strip rolling campaigns in hot rolling. Steel Res Int 86(5):567–575

    Article  Google Scholar 

  31. Xu JZ, Zhang J, Zhang FQ, Liu XH, Wang GD, He XM, Ba LY (2003) Effect of work roll bending force on hot rolled strip profile. J Iron Steel Res 15:23–27

    Google Scholar 

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Authors and Affiliations

  1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Fei Shang, Hongbo Li, Ning Kong & Jie Zhang

  2. Wuhan Iron & Steel (Group) Corp., Wuhan, 430083, Hubei, China

    Chao Hu, Liang Chen, Chao Zhang & Jianfei Chen

Authors
  1. Fei Shang
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  2. Hongbo Li
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  3. Ning Kong
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  4. Jie Zhang
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  5. Chao Hu
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  6. Liang Chen
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  7. Chao Zhang
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  8. Jianfei Chen
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Correspondence to Hongbo Li.

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Shang, F., Li, H., Kong, N. et al. CVC cyclical shifting mode and its working characteristics for the mills of CSP. Int J Adv Manuf Technol 87, 1907–1916 (2016). https://doi.org/10.1007/s00170-016-8602-8

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  • DOI: https://doi.org/10.1007/s00170-016-8602-8

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