An analysis of cold strip rolling

Jortner, D.; Osterle, J. F.; Zorowski, C. F.

doi:10.1016/0020-7403(60)90003-5

Cited by 57 publications

(30 citation statements)

References 1 publication

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“…Domanti et al [5] applied the model to thin strip and temper rolling and modelled the roll elasticity by using the influence functions for circular rolls described by Jortner et al [6]. They reported that each calculation required only a few seconds, but the severity of the roll flattening was unclear during the calculation time.…”

Section: Introductionmentioning

confidence: 99%

Development of Three-Dimensional Strip Profile Model for Thin-Foil Cold Rolling

Lee

et al. 2014

Advances in Mechanical Engineering

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Accurately predicting the strip profile after thin-foil cold rolling is very difficult because of the thinness of the strip. In this study, a three-dimensional (3D) strip profile model was developed to improve the accuracy of a rolled thin-foil profile. The distribution of the contact pressure between rolls (i.e., the work, intermediate, and backup rolls) and the rolling pressure between the strip and work roll were calculated by using the geometric structure of a 6-high mill and boundary conditions imposed in the width direction by a numerical method. The rolling pressure distribution in the rolling direction was determined by Fleck's model of thin-foil rolling. The 3D rolled-strip profile was predicted by using the pressures in the width and rolling directions. In order to investigate the effect of the rolling speed and rise in strip temperature on the lubrication, the friction coefficient was estimated through an analytical method and experiments to test the viscosity and friction. The resulting 3D strip profile was verified by a thin-foil cold rolling test and was compared with the profile obtained using the proposed 3D model and finite element simulation.

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Section: Introductionmentioning

confidence: 99%

Development of Three-Dimensional Strip Profile Model for Thin-Foil Cold Rolling

Lee

et al. 2014

Advances in Mechanical Engineering

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“…(1)) does not show good agreement with experiments. Jortner et al 3) and Fleck et al 4) pointed out that the rolls do not maintain circular profile during rolling, and proposed that roll profile was flat around the central of the roll bite in cold rolling of thin foils. Meanwhile, both elastic non-circular deformation of rolls and elastic deformation of foils or strips were taken into account in numerical simulation by Kainz et al 5) and Hao et al 6) On the other hand, only few experimental results were reported by Matsumoto et al 7) and Sun et al 8) As far as the authors know, non-circular profiles of the flattened rolls during rolling process is vital and it is still not observed clearly in metal rolling experiments.…”

Section: (Received On October 21 2017; Accepted On December 22 2017)mentioning

confidence: 99%

“…The minimum roll gap points G′ (x G ′, y G ′) on both upper and lower profiles f ′ (x′, y′) were moved to the same position according to Eq. (10) Then without reversing both profiles of upper and lower surfaces were superposed as shown in Step (3). If the sheet has curling, the rolled portions of both upper and lower profiles on the same sheet are symmetrical to the horizontal axis.…”

Section: Averaging Of the Upper And Lower Profilesmentioning

confidence: 99%

Experimental Study of Roll Flattening in Cold Rolling Process

Matsumoto

Utsunomiya

2018

ISIJ Int.

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“… First the Influence Function Method initiated by Jortner et al [6] and its numerous variants, still in use today.  Then the Finite Element Method (FEM) introduced by Atreya and Lenard [7] and Montmitonnet et al [5], which is now practically abandoned in 2D models due to its much higher cost.…”

Section: Elastic Roll Deformation Modelingmentioning

confidence: 99%

Numerical Treatments of Slipping/No-Slip Zones in Cold Rolling of Thin Sheets with Heavy Roll Deformation

2015

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Abstract:In the thin sheet cold rolling manufacturing process, a major issue is roll elastic deformation and its impact on roll load, torque and contact stresses. As in many systems implying mechanical contact under high loading, a central part is under "sticking friction" (no slip) while both extremities do slip to accommodate the material acceleration of the rolled metal sheet. This is a crucial point for modeling of such rolling processes and the numerical treatment of contact and friction ("regularized" or not), of the transition between these zones, does have an impact on the results. Two ways to deal with it are compared (regularization of the stick/slip transition, direct imposition of a no-slip condition) and recommendations are given.

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An analysis of cold strip rolling

Cited by 57 publications

References 1 publication

Development of Three-Dimensional Strip Profile Model for Thin-Foil Cold Rolling

Development of Three-Dimensional Strip Profile Model for Thin-Foil Cold Rolling

Experimental Study of Roll Flattening in Cold Rolling Process

Numerical Treatments of Slipping/No-Slip Zones in Cold Rolling of Thin Sheets with Heavy Roll Deformation

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