Calculation of the rolling pressure distribution and force in wire flat rolling process

Kazeminezhad, M.; Taheri, Ali

doi:10.1016/j.jmatprotec.2005.06.070

Cited by 32 publications

(13 citation statements)

References 14 publications

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“…Dong and Song [16] studied the slip in bar rolling and found that the difference between the roller's and blank's speeds induces local sliding. Kazeminezhad and Taheri [17] analyzed the contact pressure in wire flat rolling, the local contact pressure distributed as a hill with the peak occurring at the neutral plane. The local sliding and normal load cause local wear of the roller.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Jin

Wang

Jiang

et al. 2017

Metals

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An accurate determination of the contact pressure and local sliding in a cold rolling process is an essential step towards the prediction of the roller's life due to wear damage. This investigation utilized finite element analysis to quantify the local contact pressure and local sliding over the rolling bite in a plate cold rolling process. It was the first study to quantify the local sliding distance in a rolling process using the Finite Element Analysis (FEA). The numerical results indicate that the local contact pressure over the rolling bite demonstrates a hill profile, and the peak coincides with the neutral plane. The local sliding distance over the rolling bite demonstrates a double-peak profile with the two peaks appearing at the forward slip and backward slip zones respectively. The amplitude of sliding distance in the backward slip zone is larger than that in the forward slip zone. A stick zone was confirmed between the forward slip and backward slip zones. According to a parametric study, the local contact pressure and sliding distance decrease when the thickness reduction is reduced or the diameter of the roller is decreased. The location of the neutral plane always presents at the rolling exit side of the rolling bite's center. The size of the stick zone enlarges and the sizes of slip zones shrink significantly when the friction coefficient is increased. Finally, a novel concept of wear intensity was defined to examine the wear of the roller based on the local contact pressure and local sliding distance. The results show that a two-peak wear response exists in the backward and forward slip zones. The magnitude of the wear in the backward slip zone is larger than that in the forward slip zone. For a given roller and blank material combination, using a smaller thickness reduction, a smaller diameter roller and a higher friction coefficient condition can reduce the wear of the roller for a single rolling cycle. The current paper develops an understanding of rolling contact responses to the wear of the roller in rolling process. The research method can also be applied to study other rolling or sliding wear problems.

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Section: Introductionmentioning

confidence: 99%

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Jin

Wang

Jiang

et al. 2017

Metals

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“…The following formula is then proposed for stand No. 3: F = A+ B×W +C× r + D×T (7) where F is roll force in (MN), W is strip width in (mm), r is reduction in (%) and T is temperature in (°C). A, B, C and D are unknown coefficients and must be predicted by linear regression.…”

Section: Roll Force Linear Regression Modelmentioning

confidence: 99%

“…model. Kazeminezhad et al[7] developed a consideration in their work. Younes et al[9] genetic algorithm (GA).…”

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confidence: 99%

Prediction of Work Roll Initial Crown According to Desired Strip Profile in Hot Rolling

Pour¹

2012

ije

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The final hot strip profile is a superposition of the roll initial crown, the roll bending and flattening crown, the roll wearing crown and the roll thermal crown. In this research, linear regression models are proposed to predict the roll force, the roll wearing crown and the roll thermal crown using experimental data provided by Mobarake Steel Complex (MSC). The Euler-Bernoulli beam theory based on elasticity approach is also used to predict the roll bending and flattening crown. Finally, the work roll initial crown in order to obtain desired strip profile in hot rolling is predicted utilizing a computer programming. The obtained initial crowns are then used for seven stands of an actual roll schedule for hot strip mill of MSC. The measured strip profile shows a good agreement with the desired one for the mentioned mill.

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“…Using slab method analysis, Kazeminezhad and Karimi Taheri [4] also studied the effects of the thickness reduction, friction coefficient, and yield stress on the rolling pressure distribution, rolling force, and position of the natural point in the symmetrical wire rolling. Following their previous study, Kazeminezhad and Karimi Taheri [5] studied the deformation inhomogeneity in the flattened wire produced in the symmetrical wire rolling.…”

Section: Introductionmentioning

confidence: 99%

Analysis of curvature and width of the contact area in asymmetrical rolling of wire

Parvizi

Pasoodeh

Abrinia

et al. 2015

Journal of Manufacturing Processes

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Keywords:Asymmetrical wire rolling Experimental study Curvature Width of the contact area FEM a b s t r a c t In this paper, an investigation into the asymmetrical wire rolling is presented using experimental tests, finite element simulation, and some analytical formulations. Moreover, the effects of the roll speed ratio, roll diameter ratio, and reduction in height on the curvature radius, and width of the contact area of a rolled wire are investigated. In addition, possibility of applying a theoretical formula for calculating the width of the contact area in the symmetrical wire rolling for the asymmetrical wire rolling is also studied. A very good agreement is shown to exist between the results predicted by the FEM simulation and the experimental results.

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Calculation of the rolling pressure distribution and force in wire flat rolling process

Cited by 32 publications

References 14 publications

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Prediction of Work Roll Initial Crown According to Desired Strip Profile in Hot Rolling

Analysis of curvature and width of the contact area in asymmetrical rolling of wire

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