The Effect of Soluble Lubricant on Surface Imprinting in Temper Rolling by 4 Hi Rolling Mill

Nagase, Naoki; Shido, Seiichi; Yarita, Ikuo

doi:10.2355/isijinternational.49.881

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…Some of them are rolling speed, elongation, reduction ratio, properties of the material, roll parameters (roughness, radius, material, roughening method), lubrication conditions, etc. (Wu et al , 2019; Xia et al , 2017; Rodriguez-Vidal et al , 2020; Kijima, 2014; Mekicha et al , 2020; Nagase et al , 2009a; Köhler et al , 2016). Dick and Lenard (2005) concluded that as the rolling speed increased, loads and a forward slip would increase, thereby increasing the surface roughness of the sheets and approaching the value of the roll roughness.…”

Section: Introductionmentioning

confidence: 99%

Effect of material thickness and reduction ratio on roughness transfer in skin-pass rolling to DC04 grade sheet materials

Özakın

Çolak

Kurgan

2021

ILT

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Purpose The last stage of the cold rolling process is skin-pass rolling and one of its most significant goals is to obtain appropriate topography on the surface of the sheet steel used extensively such as in automotive industry. The purpose of this paper is to investigate the effect of thickness change and various reduction ratios on roughness transfer of DC04 grade sheet material. Design/methodology/approach DC04 grade sheet materials with different reduction ratios and several thicknesses were subjected to skin-pass rolling process in the rolling equipment with a two-high roll. Some roughness parameters were determined as a result of roughness measurements from the surfaces of roughened sheet materials. Findings While the roughness transfer is higher in 1-mm thick material in reduction ratios up to 430 micrometers; in reduction ratios above 430 micrometers, it is higher for 1.5-mm thick materials. As the reduction ratio increases in DC04 grade sheet materials, the homogeneity of the roughness distribution in 1-mm thickness sheet material deteriorates, while the roughness distribution in 1.5-mm thickness sheet material is more homogeneous. Originality/value This paper demonstrates how material thickness and reduction ratio affect the roughness transfer in skin-pass rolling. The results obtained can be used by optimizing in manufacturing processes.

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Section: Introductionmentioning

confidence: 99%

Effect of material thickness and reduction ratio on roughness transfer in skin-pass rolling to DC04 grade sheet materials

Özakın

Çolak

Kurgan

2021

ILT

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“…Combining with practical production, Lee [8] , Sun [9,10] , and Zhang [11][12][13] et al researched that possible factors affect surface roughness of cold rolled products. Ma [14] and Nagase [15] et al investigated surface characteristic transfer (or imprinting) in cold rolling, showing the effect of rolling parameters, especially lubricating states. Recently, some researchers [2][3][4]16] have launched the preliminary study on surface roughness model of cold rolling, and given some simple surface roughness regression models.…”

Section: Introductionmentioning

confidence: 99%

Mathematical model for strip surface roughness of stainless steel in cold rolling process

Chen¹,

Li²,

Zhu³

et al. 2013

AIP Conference Proceedings

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Surface roughness control is one of the most important subjects during producing stainless steel strips. In this paper, under the conditions of introducing to the concepts of transferring ratio and genetic factor and through the further theoretical analysis, a set of theoretical models about strip surface roughness were put forward in stainless steel cold tandem rolling. Meanwhile, the lubrication experiment in cold rolling process of SUS430 stainless steel strip was carried out in order to comprehensively study surface roughness. The effect of main factors on transferring ratio and genetic factor was analyzed quantitatively, such as reduction, initial thickness, deformation resistance, emulsion technological parameters and so on. Attenuation function equations used for describing roll surface roughness were set up, and also strip surface roughness at the entry of last mill was solved approximately. Ultimately, mathematical model on strip surface roughness for cold tandem rolling of stainless steel was built, and then it was used into the practical production. A great number of statistical results show that experimental data is in excellent agreement with the given regression equations, and exactly, the relative deviation on roughness between calculated and measured is less than 6.34%.

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“…[7][8][9][10][11][12][13][14] Temper rolling experiments for as-annealed carbon steel strips have been performed using a 4-high rolling mill under dry condition. An electric-discharged dull roll and shot dull roll were employed as the work rolls.…”

Section: Introductionmentioning

confidence: 99%

Imprinting of Dull Roll Surface Texture to Carbon Steel Strips in Temper Rolling by Dry Condition

2009

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The Effect of Soluble Lubricant on Surface Imprinting in Temper Rolling by 4 Hi Rolling Mill

Abstract: Fig. 18. Models of imprinting of dull roll surface on mild steel sheet.

Cited by 11 publications

References 3 publications

Effect of material thickness and reduction ratio on roughness transfer in skin-pass rolling to DC04 grade sheet materials

Effect of material thickness and reduction ratio on roughness transfer in skin-pass rolling to DC04 grade sheet materials

Mathematical model for strip surface roughness of stainless steel in cold rolling process

Imprinting of Dull Roll Surface Texture to Carbon Steel Strips in Temper Rolling by Dry Condition

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