Hydrodynamics Method and Its Application in Hot Strip Rolling

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

doi:10.1002/srin.201600220

Cited by 13 publications

(15 citation statements)

References 13 publications

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“…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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Section: Introductionmentioning

confidence: 99%

“…Si Li et al [5,6] have proposed a simplified model to predict pressure in thin strip rolling process, derived from the Navier-Stokes equation using hydrodynamics method (HM). Their specific model assumes that strip materials take the characteristics of viscous fluid during hot rolling processes [15].…”

Section: Introductionmentioning

confidence: 99%

Contribution to improving hydrodynamics method for hot strip rolling application

mimoune

Zaaf²,

Amirat³

2022

Int J Adv Manuf Technol

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show abstract

“…Because it better reflects the characteristics of hot rolling, the model was widely used. Li et al [3] established the rolling force model by the method of fluid mechanics. The non-uniform deformation is considered in the model, which is more straightforward in form.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Model and Experimental Study of Dynamic Hot Rolling

Yan-bo

Peng

2021

Metals

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At present, the commonly used hot rolling model is only applicable to the static rolling process. However, to study the dynamic rolling process, a dynamic rolling model with roll vertical movement velocity parameters is required. In this study, the influence of the vertical movement velocity of the rolls on the rolling process is considered, and a dynamic rolling process model is proposed when the roll gap is reduced during the hot rolling dynamic rolling process. Mathematically, the model is based on the upper limit method. The model considers the influence of the dynamic rolling process on the length of the deformation zone, establishes a dynamic velocity field model and an average deformation rate model, and then solves the total power of the rolling process. Finally, the dynamic rolling force equation is given. Compared with the experimental results, the dynamic rolling model in this paper has high accuracy with an average error of 4%. In addition, the influence of roll vertical velocity on rolling parameters is discussed, which provides a basis for the study of the dynamic rolling process.

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“…In order to achieve higher-quality product on strip rolling mills, it is necessary to accurately predict the contact stresses in roll gap. A lot of theoretical friction models [1][2][3][4][5] had been proposed to predict the contact stresses in roll gap. Due to oversimplification of the frictional conditions in complex plastic deformation process, theoretical prediction in distribution of the contact stresses over the contact arc has never been satisfactorily achieved.…”

Section: Introductionmentioning

confidence: 99%

An improved inverse method by envelope fitting for prediction of contact stresses in strip rolling

Wang

Xiao

et al. 2017

J Braz. Soc. Mech. Sci. Eng.

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An improved inverse method by envelope fitting approach has been developed to improve prediction accuracy of contact stresses in strip rolling. By comparisons of the simulation data with theoretical results predicted by different inverse methods, it can be found that the improved inverse method by envelope fitting has a better predictive effect than the old method, in particular for the friction stress. And then, a rolling experiment is developed to validate the industrial feasibility of the improved inverse method. Comparing the results predicted by FEM and different inverse methods, it is also demonstrated that the improved inverse method is better than the old method in the rolling test. It is believed that the improved inverse method by envelope fitting approach would have great potential for industrial rolling.

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Hydrodynamics Method and Its Application in Hot Strip Rolling

Cited by 13 publications

References 13 publications

Contribution to improving hydrodynamics method for hot strip rolling application

Contribution to improving hydrodynamics method for hot strip rolling application

Theoretical Model and Experimental Study of Dynamic Hot Rolling

An improved inverse method by envelope fitting for prediction of contact stresses in strip rolling

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