Research on the Color Difference on Surface of 3104 Aluminum Alloy Stripes during Cold Continuous Rolling Process

Abstract:

Color difference on surface of aluminum alloy stripes when lubricated with oil-water mixtures in cold continuous rolling process was researched. The surface profile, 3D and micro morphology were observed by surface surface profiler, laser scanning confocal microscopeand scanning electron microscope. The chemical composition of aluminum surface was analyzed by X-ray energy dispersive spectrometer, and then the formation mechanism of color difference was studied. The results indicate that lubricated with oil-water mixture, oil and water can't mix sufficiently and lubrication failure was found in deformation zone because of lubrication oil shortage. Working roller and fresh surface of stripes contacted directly and leaded to adhesive, so lots of irregular shaped micro-cracks were found after rolling, the residual composition of oil-water mixture adsorbed in the micro-cracks and not easy to be cleaned up, so the organic matter of residue composition carbonized and manifested as color difference in the visible. The fringes of color difference are distributed approximately along the rolling direction and the average roughness was very nearly the same between different kinds of fringes.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 1383-1386
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.1383
• Online since: July 2012
• Authors: Jian Lin Sun, Guo Hong Ding, Lei Xia, Bing Yun, Ze Sheng Ji
• Keywords: Cold Rolling, Color-Difference, Lubrication, Surface

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