Abstract
In this study, the paint layer was removed on the surface of 5083 aluminum alloy using laser cleaning and mechanical grinding. The microstructure and performance of experimental samples were carefully investigated using scanning electron microscope, energy disperse spectroscopy and other methodologies. The results showed that compared with mechanical grinding, laser cleaning can improve the surface paint coating of aluminum alloy more effectively. The surface of the matrix formed uniformly distributed volcanic craters and small holes emerged at the spot junction after laser cleaning. The carbon and oxygen content on the substrate surface after laser cleaning was much lower than that after mechanical grinding. In addition, the corrosion resistance and coating adhesion of the substrate were obviously improved using laser cleaning. It was closely associated with refinement of the grains and reduction in surface roughness. We concluded that laser cleaning can be widely used to replace mechanical grinding in manufacturing on the premise of meeting industrial needs.
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This work is supported by the National Natural Science Foundation of China (Grant No. 51861165202 and 51705173) and Science and Technology Planning Project of Guangdong Province (Grant No. 2017B090913001).
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Yunkai Li is currently a master candidate student in Materials Processing Engineering at the Huazhong University of Science and Technology, Hubei, China. His research interests are in the area of paint removal using laser cleaning.
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Li, Y., Wang, C. & Mi, G. Influence of cleaning modes on the microstructure and performance of 5083 alloy substrate. J Mech Sci Technol 35, 3943–3949 (2021). https://doi.org/10.1007/s12206-021-0807-6
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DOI: https://doi.org/10.1007/s12206-021-0807-6