Modeling of Thin Strip Profile during Cold Rolling on Roll Crossing and Shifting Mill

Tibar

Mahmoud

et al. 2023

JMMP

A precise prediction of the rolling force is critical to ensure the quality of the final product, especially in the cold rolling of thin strips. Based on this, a new mathematical model is developed to work out the rolling force when considering the roll crossing angle and work roll shifting values at speed ratios of 1.1, 1.2 and 1.3. An iterative method was used to indicate the contact area shape, from which the rolling force was automatically calculated using the Matlab™ code for the cases of work roll cross angles of 0.5° and 1°. Experimental measurements and analysis were carried out to validate the theoretical calculations. The result shows that the theoretical analysis and experimental results are in good agreement, which indicates that the developed theoretical model can predict the rolling force well with a consideration of roll crossing during the cold rolling process.

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Rolling Force during Cold Rolling with Roll Crossing and Shifting System

Tibar

Mahmoud

et al. 2023

JMMP

“…2D FE and 3D FE simulations have been used extensively to simulate the rolling process of thin strip, but as computation capacity has developed, 3D FE simulation is preferred because 2D FE simulation has a limited ability to study transverse thickness and distributions of stress. The profile of thin strip during cold rolling in a roll crossing and shifting mill (WCS) was modelled and analysed in [12]. Zhang et al [13] developed a 3D FEM model of UCM mill (a 6-high mill with intermediate rolls shifting and work roll bending) to study how intermediate roll shifting affects the strip profile and distribution of the rolling force.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Thin Strip Profile in Asymmetric Cold Rolling Considering Work Roll Crossing and Shifting

Jiang

Wei

2014

AMR

Cold rolled thin strip has received a great deal of attention through technological and theoretical progress in the rolling process, as well as from researchers who have focused on some essential parameters of strip such as its shape and profile. This paper describes the development of a 3-D finite element model of the shape of thin strip during cold rolling to simulate the cold rolling of WCS (work roll crossing and shifting) in asymmetric rolling. This finite element model considers the asymmetrical rolling parameters such as variations in the diameters of the rolls and the crossing angle as the work roll shifts on the strip during cold rolling. The shape and profile of the strip are discussed in the asymmetrical and symmetrical rolling conditions, while the total rolling force and distribution of stress are discussed in the case where the roll cross angle and axial shifting roll changes. The results can then be used to control the shape and profile of thin strip during rolling.

“…Researchers have studied how the rolling parameters affect the shape and profile of rolled strip [7][8][9] . The ability of a work roll crossing and shifting mill to control the crown and its subsequent effect on rolling mechanics are also discussed [10][11][12][13] .…”

mentioning

confidence: 99%

Analysis of thin strip profile by work roll crossing and shifting in asymmetrical cold rolling

Jiang

Wei

2015

Int. J. Mod. Phys. B

2015). Analysis of thin strip profile by work roll crossing and shifting in asymmetrical cold rolling. International Journal of Modern Physics B, 29 (10-11), 1540032-1-1540032-7. Analysis of thin strip profile by work roll crossing and shifting in asymmetrical cold rolling AbstractIn order to analyze the effects of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile, extensive tests were carried out on a 4-high rolling mill equipped with a work roll crossing and shifting system. The results show that the strip profile is nearly flat under asymmetrical rolling. The rolling force was also analyzed in detail by changing the crossing angle and axial shifting value of work rolls. In order to analyse the effects of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile, an extensive tests were carried out on a 4-high rolling mill equipped with a work roll crossing and shifting system. The results show that the strip profile is nearly flat under asymmetrical rolling. The rolling force was also analyzed in details by changing the crossing angle and axial shifting value of work rolls.