Simulation of cold rolling and skin rolling of strips in the deformation zone consisting only of a forward slip zone

Garber, E. A.; Shalaevskii, D. L.; Traino, A. I.

doi:10.1134/s0036029512110067

Cited by 2 publications

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“…A trio of authors, Garber, E. A., Shalaevskii, D. L. and Traino, A. I. [22], completed research on the simulation of cold rolling and skin rolling of strips in the deformation zone consisting only of a forward slip zone. The results of the simulation and investigation of the conditions of rolling and skin rolling of steel strips demonstrate that the deformation zone, consisting only of a forward creep zone, can be created in the working stands of mills by increasing the forward tension forces.…”

Section: Introductionmentioning

confidence: 99%

The Research of the Rolling Speed Influence on the Mechanism of Strip Breaks in the Steel Rolling Process

Rusňák¹,

Malega

Svetlík

et al. 2020

Materials

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This paper evaluates the results of research aimed at changing the rolling speed and the effect of foreign particles in the steel strip, as well as the forces in the rolling process. It also compares the correlation of lab results, theoretical expectations and real-life observations. It supplements the already existing practices aimed at strip-break elimination that were developed and implemented worldwide. Records from a five-stand tandem mill were used for the data analysis. The historical databases developed based on incidents (strip breaks) since 2013 were used; the detailed position of each strip break was documented, along with defects found at the portions of steel strips that broke or the information that no defect was found. The paper contains an evaluation of metallographic analyses of the samples of the strip breaks.

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Section: Introductionmentioning

confidence: 99%

The Research of the Rolling Speed Influence on the Mechanism of Strip Breaks in the Steel Rolling Process

Rusňák¹,

Malega

Svetlík

et al. 2020

Materials

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Algorithm for designing asymmetrical rolling mode

Kozhevnikov,

Shalaevskii,

Kozhevnikova

et al. 2024

Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

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Sliding of the work rolls along the strip is one of the emergency operating modes of the stand, as a result of which the steady rolling process is disrupted and fluctuations in the tension and thickness of the finished strip occur. The work obtained a condition for eliminating roll slippage along the strip in the general case of the technological process, when the diameters of the barrels of the upper and lower work rolls are different. To do this, when calculating the parameters of the asymmetric mode, the following actions are implemented. First, the presence of a leading zone is assessed at the initial surface roughness of the roll barrel. If there is an advance zone in the deformation zone on both sides of the strip, then the fulfillment of the classical gripping condition is checked with the initial surface roughness of the barrels of both rolls reduced by 60%, thereby simulating further wear of this roughness.It has been established that the greatest influence on the occurrence of slippage in the current state of the work roll barrel surface will be exerted by a combination of technology factors – strip compression in the stand, strip tension. The process asymmetry factor has very little effect on the probability of occurrence of the emergency rolling mode considered in the work.As part of the study, the previously developed algorithm for designing continuous rolling technology was improved, taking into account the possibility of roll slippage, incl. when using an asymmetric process.An asymmetric rolling mode created using a newly proposed technique for designing process parameters is presented.The work also demonstrates the influence of the asymmetry factor on the structure of the asymmetric deformation zone. It is shown that with increasing strip tension, the effectiveness of the impact of the difference in the diameters of the barrels of the lower and upper rolls on the source decreases

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Simulation of cold rolling and skin rolling of strips in the deformation zone consisting only of a forward slip zone

Cited by 2 publications

References 1 publication

The Research of the Rolling Speed Influence on the Mechanism of Strip Breaks in the Steel Rolling Process

The Research of the Rolling Speed Influence on the Mechanism of Strip Breaks in the Steel Rolling Process

Algorithm for designing asymmetrical rolling mode

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