Journal ArticleDOI
An experimental investigation into roughness transfer in skin-pass rolling of steel strips
Bilal Çolak,Naci Kurgan +1 more
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TLDR
In this article, a 2-high rolling setup equipped with a load-cell measuring the rolling force, which can roll at different speeds and reduction ratios, was used to observe the change in the amount of roughness transfer.Abstract:
The surface of sheet metals should have a certain level of roughness in terms of forming and dyeing quality. Surface roughness is mainly introduced to the material by rolling with rough rolls, which is called temper rolling. The roughness of a roll is transferred to the material, depending on the rolling parameters. A 2-high rolling setup equipped with a load-cell measuring the rolling force, which can roll at different speeds and reduction ratios, was used to observe the change in the amount of roughness transfer. Surface roughness values of specimens were measured after tests, their average and standard deviation values were calculated, and 3-D field scanning images were investigated. The results obtained were evaluated in terms of rolling parameters and roughness transfer. It was concluded that each parameter that increased the rolling force also increased the roughness transfer. It was seen that rolling force, and thus roughness transfer, was higher in the tests conducted at high speeds and high reduction ratios with thinner materials. Lubricated roughening tests indicated that the introduction of roughness on material surface decreased due to lubrication. Moreover, a more homogeneous roughness distribution was obtained in lubricated rolling compared to dry rolling. It was observed that the roughness at small reduction ratios was obtained within a narrower range.read more
Citations
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Journal ArticleDOI
A new method for predicting the three-dimensional surface texture transfer in the skin pass rolling of metal strips
TL;DR: In this article, a 3D characterisation method was proposed to reveal the mechanisms of texture transfer in the skin pass of metal rolling is challenging due to the complex contact of randomly distributed surface asperities in both the roll and strip surfaces.
Journal ArticleDOI
Effect of the elastic deformation of rolls on the surface texture transfer in skin-pass rolling
TL;DR: In this paper, a numerical approach was developed to efficiently overcome the multiscale challenges associated with the numerical characterisations of surface texture transfer with elastically deformed work rolls in skin-pass rolling.
Journal ArticleDOI
Study on mathematical model of work roll wear in skin-pass rolling of hot steel strip
TL;DR: In this article, the wear law of work roll is obtained by a theoretical analysis of roll wear mechanisms as well as an elastic-plastic finite element analysis of skin-pass rolling.
Journal ArticleDOI
Analysis of surface roughness alteration in micro flexible rolling
Mingshuai Huo,Mingshuai Huo,Jingwei Zhao,Haibo Xie,Zhou Li,Li Shengli,Hongmei Zhang,Zhengyi Jiang,Zhengyi Jiang +8 more
TL;DR: In this article, surface roughness alteration of aluminium alloy strips during micro flexible rolling was investigated with considering the influences of rolling speeds, roll lifting speeds, thickness ratios, and lubrication conditions, and the mechanisms were discussed.
Journal ArticleDOI
An Experimental Investigation of Steel Surface Topography Transfer by Cold Rolling
TL;DR: Experimental results reveal that the furrow phenomenon occurs during the rolling process but is eliminated by the elastoplastic deformation of the matrix and the forward slip action, and the surface topography transfer mechanism and microconvex change law during cold rolling are revealed.
References
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Book
Primer on Flat Rolling
TL;DR: The "Primer for Flat Rolling" as mentioned in this paper is based on the authors' yearly set of lectures, delivered to engineers and technologists working in the rolling metal industry to ease their planning and analyzing of processes.
Journal ArticleDOI
Influence of roll radius on roughness transfer in skin-pass rolling of steel strip
TL;DR: In this paper, the influence of roll radius on roughness transfer in skin-pass rolling is investigated by experimental rolling tests as well as numerical analysis by elastic-plastic FEM.
Journal ArticleDOI
Skin-pass rolling I—Studies on roughness transfer and elongation under pure normal loading
Hideo Kijima,Niels Bay +1 more
TL;DR: In this paper, the influence of tool roughness in skin pass or temper rolling of steel strip is investigated focusing on roughness transfer and strip elongation under pure normal loading, i.e. with no tangential shear between tool and workpiece.
Journal ArticleDOI
An experimental investigation of steel surface characteristic transfer by cold rolling
TL;DR: In this article, the surface characteristics of carbon steel strip were measured by an atomic force microscope (AFM) and analyzed numerically, and the 3D images of surface profile exhibited an explicit appearance of surface transfer.
Journal ArticleDOI
A study on the characteristics of electrical discharge textured skin pass mill work roll
TL;DR: In this article, the characteristics of these thermally influenced layers were studied by means of optical and scanning electron microscopes, X-ray diffractometer, radio frequency-glow discharge optical emission spectrometer and microhardness tester.
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