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

Zaaf, Mohamed; Mebarek, Abdelmalek; Amirat, Abdelaaziz

doi:10.1007/s00170-018-2691-5

Cited by 4 publications

(3 citation statements)

References 17 publications

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“…The fixed point method is then applied to include the variation of viscosity as a function of pressures during rolling using Barus model [19] expressed by Eq. (7) .…”

Section: Improving Hydrodynamic Modelmentioning

confidence: 99%

“…In the last decades there have been some experiments results [1,2,3,4] for the validation of rolling analytical [5,6,7] and numerical [8,9,10,11] models to predict pressure and velocity fields in order to bring prompt answers to the industry of strip rolling process. However all of these models have been interested in the improvement of the earlier proposed and commonly used methods of Karman-Цeликoв equation [12] and Orowan-Sims equation [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Contribution to improving hydrodynamics method for hot strip rolling application

mimoune

Zaaf²,

Amirat³

2022

Int J Adv Manuf Technol

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The present work is a contribution to the improvement of the hydrodynamic method proposed by Si Li et al [2016] used to predict the pressures and the rolling speeds during hot rolling of aluminum strips. The hydrodynamic model gives good prediction however it is based on empirical coefficients that must be identified for each rolling case. Therefore, a critical analysis of the method has been first made and then a methodology for improving it has been presented. The improvement consists in coming out of the empiric coefficients and considering the variation of viscosity as a function of pressures. Results are much better in good agreement with the experimental data. The validated model can then be admitted as an improved hydrodynamic model for predicting pressures and velocities during hot rolling of thin strips.

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“…The fixed point method is then applied to include the variation of viscosity as a function of pressures during rolling using Barus model [19] expressed by Eq. (7) .…”

Section: Improving Hydrodynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Contribution to improving hydrodynamics method for hot strip rolling application

mimoune

Zaaf²,

Amirat³

2022

Int J Adv Manuf Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recent review papers on rolling process [2], [3] continues to point out that there are new demands on modeling the rolling process that could bring prompt answers for industrial need. Experimental methods require expensive equipment and a large number of reproductive tests [4].…”

Section: Introductionmentioning

confidence: 99%

Numerical and analytical estimation of rolling force and torque in hot strip rolling

Attanasio¹,

Prete²,

Primo

2023

Preprint

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In this paper, both numerical and analytical method were developed for computing, in strip or plate rolling, the distribution of roll pressure, rolling force and rolling torque (from which also rolling power can be estimated), assuming an homogeneous deformation of the rolled material. Differently to other similar models present in literature, which solve the resulting rolling differential equation for the roll pressure, the model presented in this work solves the problem for the horizontal force. In this way it is possible to avoid the calculation of the derivative of material flow stress curve, which is not always analytically easy and possible (i.e. point material flow stress data). The proposed numerical model is based on the friction law proposed by Chen and Kobayashi while the analytical one is based on simple shear friction model and brings to useful analytical formulas for a quickly calculation of rolling torque and force. Moreover, a relationship between the shear friction factor and Coulomb friction coefficient in rolling was found. The developed models show good agreement with experimental measures, in terms of rolling force and torque, found in literature.

show abstract

Numerical and analytical estimation of rolling force and torque in hot strip rolling

Attanasio,

Del Prete,

Primo

2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

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

Cited by 4 publications

References 17 publications

Contribution to improving hydrodynamics method for hot strip rolling application

Contribution to improving hydrodynamics method for hot strip rolling application

Numerical and analytical estimation of rolling force and torque in hot strip rolling

Numerical and analytical estimation of rolling force and torque in hot strip rolling

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