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A simplified method to calculate the rolling force in hot rolling

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Abstract

It is well known that there are sharp peaks (friction hills) in the specific roll pressure curves predicted by Sims formula and Цeликoв formula which result in large errors for hot rolling. In this paper, a new specific roll pressure formula is derived from the Navier-Stokes equation (N-S equation) by the hydrodynamics method (HM) with assumptions that strip materials take the characteristics of viscous fluid during plastic deformation of hot rolling processes. Results predicted by this HM formula, Sims formula, and Цeликoв formula were compared with experimental data. It was found the friction hills in the specific roll pressure curves predicted by Sims formula and Цeликoв formula are smoothed by this newly established formula and higher accuracy can be achieved in the calculation of the unit width rolling force.

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Authors and Affiliations

  1. The Key Laboratory of Metallurgical Equipment and Control of Education Ministry, Wuhan University of Science and Technology, Wuhan, 430081, China

    Si Li, Zhigang Wang, Changming Liu, Jinhua Ruan & Zengbing Xu

Authors
  1. Si Li
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  2. Zhigang Wang
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  3. Changming Liu
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  4. Jinhua Ruan
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  5. Zengbing Xu
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Correspondence to Zhigang Wang.

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Li, S., Wang, Z., Liu, C. et al. A simplified method to calculate the rolling force in hot rolling. Int J Adv Manuf Technol 88, 2053–2059 (2017). https://doi.org/10.1007/s00170-016-8890-z

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