Hidden Potential of Cold Sheet Rolling

  • N. V. SudakovEmail author
  • A. P. Pellenen

Symmetric rolling (SR) where the roll speeds are equal and rolling-drawing (RD) where the roll speed ratio is limiting are versions of general rolling (GR). An advantage of GR is in a greater number of independent control parameters than in SR and RD (three against two and one, respectively). In this regard, GR is more flexible, thus allowing rolling schedules that ensure a fuller utilization of equipment capabilities, a reduction in the number of passes or intermediate heat treatments, a reduction in the minimum possible thickness of the strip, etc. The developed mathematical model of GR, the program for optimizing the rolling schedules against various criteria, and its numerical implementation confirm these conclusions. If compared with SR, the efficiency of GR increases with increase in the friction coefficient and the diameter of the work rolls, decrease in the elastic characteristics of the rolls, expansion of the range of mill products, increase in the strength of the strip, and decrease in its thickness. When compared with RD, the situation is opposite. An analysis of the variation in the control parameters during passages shows that as the thickness of the strip increases (decreases), the rolling schedules of GR tend to those of SR (RD).


symmetric rolling asymmetric rolling deformation zone friction torque tension pressure minimum thickness objective function control parameters optimization 


  1. 1.
    S. Sheikhi, A. Angerbauer, and C.-D. Wuppermann, “Developments in flat steel production,” Stahl und Eisen, 129, No. 8, 20–34 (2009).Google Scholar
  2. 2.
    B. Ritterbach, “Trends in steel research,” Stahl und Eisen, 133, No. 11, 54–58 (2013).Google Scholar
  3. 3.
    R. Holz, O. N. Jepsen, and A. Weller, “Advanced reversing cold rolling mill for special steel grades at China Steel Corporation,” Stahl und Eisen, 125, No. 8, 51–56 (2005).Google Scholar
  4. 4.
    E. Roller and S. Schober, “Optisches Dickenmesssystem bewährt sich beim Kaltwalzen von Band (New optical laser thickness measuring system proves itself under extreme conditions during cold strip rolling),” Stahl und Eisen, 136, No. 12, 103 (2016).Google Scholar
  5. 5.
    S. A. Mashekov, N. T. Smailova, A. E. Nurtazaev, and A. S. Mashekova, “Simulation of roll bending in thin strip rolling on lengthwise-wedge rolling mill,” Chernye Metally, No. 1, 18–24 (2014).Google Scholar
  6. 6.
    N. V. Sudakov, “Control of shear strain and its role in the formation of the stress–strain state (SSS),” Vestn. YuUrGU: Ser. Metallurgiya, 17, No. 3, 99–105 (2017).Google Scholar
  7. 7.
    V. N. Vydrin and L. M. Ageev, “Principles and theory of the new rolling–drawing process,” in: Rolling Theory and Technology, ChPI, Chelyabinsk (1971), pp. 3–21.Google Scholar
  8. 8.
    V. N. Vydrin, N. V. Sudakov, L. M. Ageev, et al., “On optimization of rolling schedules,” Steel in the USSR, 14, No. 2, 73 (1984).Google Scholar
  9. 9.
    V. N. Vydrin, N. V. Sudakov, and E. A. Ostsemin, “Calculating the pressure and tension for rolling with different roll speed ratios,” in: Sheet Rolling, VPI, Voronezh (1979), pp. 38–42.Google Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.South Ural State University (National Research University)ChelyabinskRussia

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