Influence of small microscopic grooves of work rolls 
on strain gradient induced in metal sheets 
during symmetric and asymmetric rolling

Pustovoytov, Denis; Pesin, Alexander; Lokotunina, Natalya; Kozhemiakina, Anna

doi:10.37904/metal.2019.701

Cited by 4 publications

(1 citation statement)

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“…Since the 2010s, asymmetric rolling is seen in terms of forming the required properties of rolled products. Studies of Russian and foreign scientists [3][4][5][6][7][8][9][10][11] show that one of the most promising methods of obtaining the required properties of rolled products is an asymmetric thin sheet rolling process based on intentionally formed asymmetry due to the difference between peripheral speeds of work rolls.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the effect of increasing technological plasticity during asymmetric rolling of aluminum alloys

Kozhemyakina

2023

Superplasticity in Advanced Materials

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Abstract. In this paper the effect of asymmetric rolling on the possibility of increasing the technological plasticity of aluminum alloys was investigated. The experimental research was carried out on a laboratory asymmetric rolling mill with an individual drive of the work rolls with the possibility of creating a speed ratio from 1.0 to 5.0. It was shown that the increase of speed ratio of the work rolls from 1.0 to 5.0 significantly reduce the rolling force in comparison with symmetric rolling. Rolling force decreased in 1.9 times for alloy AD33 (AA6061), in 2.3 times for alloy AMg6, in 3.2 times for alloy D16 (AA2024). At the same time the technological plasticity was increased. Technological plasticity characterizes the ability of a material to undergo higher thickness reductions without fracture under certain conditions of stress, temperature, and strain rate. In asymmetric rolling the thickness reduction was increased from 48 to 87% for alloy D16, from 50 to 59% for alloy AMg6, and from 40 to 75% for alloy AD33 in comparison with symmetric rolling. In all cases the samples had initially room temperature and were subjected only to deformation heating and friction heating. Extremely high thickness reduction (87%) was achieved by a single pass asymmetric rolling (at speed ratio 5.0) for alloy D16. It was found that the ductility of the alloy D16 was 12.3% after asymmetric rolling with a thickness reduction of 87% and without the use of annealing. This was approximately 2 times higher than the initial ductility (6.2%) of the same alloy in the initial annealed state and much higher than ductility (0.3%) after symmetric rolling. New technological schemes of sheet rolling of aluminum alloys with high ductility and increased technological plasticity have been developed.

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Section: Introductionmentioning

confidence: 99%

Experimental study of the effect of increasing technological plasticity during asymmetric rolling of aluminum alloys

Kozhemyakina

2023

Superplasticity in Advanced Materials

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Development of Asymmetric Cold Rolling Technology of Low Carbon Steel Grades in Order to Increase the Thickness of the Hot Rolled Strip

Barysnikova,

Nosov

2024

Lecture Notes in Mechanical Engineering

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A comprehensive review on incremental deformation in rolling processes

et al. 2022

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Incremental deformation is a well-known concept among material scientists, when applied with advanced automation it becomes very efficient. It has advanced in leap and bounds over time and has established itself in mainstream industrial applications. Yet, there are a few common problems associated with this technique. Many of these problems are related to predicting material behavior, inaccuracies in setting roller angles and distance, and the velocity of rollers and workpieces. This review paper attempts to concisely present these processes, problems, and the advances that have been made over the years. Firstly, in this review, a detailed overview of the rolling processes, carried out in different academic universities, based on conventional and generic techniques is given. Secondly, an outline of various rolling techniques like thread rolling, incremental rolling, shape rolling, and some other advanced techniques like corrugated rolling, riblet rolling, and symmetric and asymmetric rolling, are discussed in detail with their merits, demerits, and applications. This is followed by a study of recent reports on the finite element methods (FEM), consisting of work on numerical methods by research scholars and practical experiments such as experiments based on the topic like specific material usage or the enhancement of the rolling process through different methods. Finally, a decisive summary of the challenges behind the novel concepts, and the specific domains requiring further enhancements are mentioned.

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Influence of small microscopic grooves of work rolls on strain gradient induced in metal sheets during symmetric and asymmetric rolling

Cited by 4 publications

References 0 publications

Experimental study of the effect of increasing technological plasticity during asymmetric rolling of aluminum alloys

Experimental study of the effect of increasing technological plasticity during asymmetric rolling of aluminum alloys

Development of Asymmetric Cold Rolling Technology of Low Carbon Steel Grades in Order to Increase the Thickness of the Hot Rolled Strip

A comprehensive review on incremental deformation in rolling processes

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