Effect of micro-defects on the surface brightness of cold-rolled stainless-steel strip

Kenmochi, Kazuhito; Yarita, Ikuo; Abe, Hideki; Fukuhara, Akihiko; Komatu, Tomio; Kaito, Hiroyuki

doi:10.1016/s0924-0136(97)00003-4

Cited by 30 publications

(9 citation statements)

References 3 publications

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“…This is due to more pits being flattened as a result of the increased roll pressure at high reductions. A similar decrease of micro-pits as the thickness reduction increases is reported by Kenmochi et al (1997) and Ahmed and Sutcliffe (2001). Additionally, Kenmochi et al (1997) showed that rough roll surface decreases the area ratio of the micro-pits.…”

Section: Rolling Parameters and Asperity Flatteningsupporting

confidence: 78%

Experimental validation of contact models for cold-rolling processes

Mekicha¹,

Rooij²,

Jacobs

et al. 2020

Journal of Materials Processing Technology

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Section: Rolling Parameters and Asperity Flatteningsupporting

confidence: 78%

Experimental validation of contact models for cold-rolling processes

Mekicha¹,

Rooij²,

Jacobs

et al. 2020

Journal of Materials Processing Technology

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“…Since the thickness of ultra-thin strip materials is usually only tens of micrometers or even a few micrometers, the ratio of the surface grain volume to total deformation zone volume increases, highlighting the surface effects of the material [21]. Kenmochi et al [22] studied four types of micro-defects: micro-pits on the strip surface, oil pits formed during cold rolling, grooves formed by intergranular corrosion during pickling, and scratches caused by the roughness of the roll surface. Previous studies believed that the surface morphology characteristics of metal strip materials mainly transferred from the working rolls during the cold-rolling process.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Zhang,

Li,

et al. 2024

Metals

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As the demand for lithium-ion batteries increases, higher quality requirements are being placed on pure aluminum ultra-thin strips, one of the main materials used in lithium-ion battery current collectors. Roller vibration during the rolling process of pure aluminum ultra-thin strips is unavoidable and significantly affects the quality of the strips. This paper uses 1A99 pure aluminum ultra-thin strips as raw materials and employs a controlled vibration method during the rolling process to obtain products under two conditions: stable rolling and vibrational rolling. The surface and cross-section of the aluminum strips were characterized using scanning electron microscopy (SEM), and the microstructure of the surface and cross-section was studied using electron backscatter diffraction (EBSD) technology. The results show that, during stable rolling, the surface quality of the aluminum strip is good without defects. Under vibration, obvious vibration marks appear on the surface of the aluminum strip, showing characteristics of peaks and troughs. With the increase in strain at the trough position, there is a transition from low-angle grain boundaries to high-angle grain boundaries, and the grain size is uneven at the peak and trough positions, with noticeable grain refinement at the troughs. At the same time, under the influence of vibration, the aluminum strip induces a different texture morphology from conventional rolling. Due to the different plastic strains at the peak and trough positions, a texture alternation phenomenon occurs at these positions. The tensile test results indicate that aluminum strips exhibit poor mechanical properties under roller vibration, with the reduction in mechanical performance primarily attributed to the uneven microstructure distribution caused by roller vibration.

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“…For example, Kenmochi [5][6] et al studied surface micro-defects of stainless steel in cold rolling, and then, in the mechanism, explained how surface roughness is affecting surface quality of strips. Dick [7] et al showed that roughness of rolled strips is primarily a function of roll roughness in cold rolling, which also depends on the reduction chosen and emulsion.…”

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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Effect of micro-defects on the surface brightness of cold-rolled stainless-steel strip

Cited by 30 publications

References 3 publications

Experimental validation of contact models for cold-rolling processes

Experimental validation of contact models for cold-rolling processes

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

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

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