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Simplified two-dimensional model for the prediction of pressures and velocities in hot strip rolling

Abstract

The present paper introduces a simplified two-dimensional model for the prediction of pressures and velocities in hot strip rolling process through the combination of squeezing and shearing models. First, the squeezing model based on Karman equation is used to obtain a predictive model of stresses and velocities on the roll-strip contact along the longitudinal direction referred as ROL1D. Secondly, the shearing model based on thin film assumption is developed to predict pressures in the longitudinal direction while shearing stresses and velocities along normal and longitudinal directions referred as ROLXZ. Then, the two former models have been combined in order to obtain a squeeze-shear model referred as ROL2D. The latter model permits to assess the rolling process with respect to squeezing and shearing. Results show that where squeezing is most dominant, the ROL2D model is conforming the reality of the rolling process and in good agreement with experimental and literature data.

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Funding

This work received financial support from the Algerian general direction of research (DGRSDT): Direction général de la recherche scientifique et technologique.

Author information

Correspondence to Mohamed Zaaf.

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Zaaf, M., Mebarek, A. & Amirat, A. Simplified two-dimensional model for the prediction of pressures and velocities in hot strip rolling. Int J Adv Manuf Technol 100, 13–23 (2019). https://doi.org/10.1007/s00170-018-2691-5

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Keywords

  • Hot rolling
  • Squeezing
  • Shearing
  • Thin films
  • Newtonian viscous