Abstract
To address the limitations of existing surface cleaning technologies in shipyards, various studies are underway to apply the laser cleaning process, which uses a laser as a heat source, to pretreatment for painting and welding. Accordingly, this study conducted a cleaning experiment that uses a low power Q-switching fiber laser to remove the primer and oxide layer from the surface of steel for shipbuilding. To enhance the field applicability, this study derived the optimal laser cleaning process parameters that satisfy pretreatment standards. The main process parameters include scan speed and energy density. The most thoroughly cleaned surface was obtained at a scan speed corresponding to laser beam overlap rate of 20 % and an energy density of 10.5 J/cm2, and the working time was also significantly reduced. Therefore, this study is expected to be highly useful as important data for applying laser cleaning technology, which is receiving greater attention across many industries in addition to the shipbuilding and marine industry.
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Ji-Eon Kim is a Ph.D. student at Ocean Science and Technology School, Korea Maritime and Ocean University (KMOU), Busan, S. Korea. Her research interests include laser application technology, particularly laser cleaning and laser cutting.
Moo-Keun Song is a Researcher at Laser Advanced Machining Support Center of KMOU. He received his Ph.D. from KMOU in 2020. His research interests include laser application technology, particularly laser surface treatment and laser welding.
Myoung-Soo Han is a Vice President of Daewoo Shipbuilding and Marine Eng. Co. Ltd., Geoje, S. Korea. He received his Ph.D. from The Ohio State University in 2002. His research interests are in welding and ship production technology.
Jong-Do Kim is a Professor at Division of Marine Engineering, Korea Maritime and Ocean University, Busan, S. Korea. He received his Ph.D. from Osaka University in 1997. His research interests are in laser material processing; laser welding, laser cutting for the decommissioning of nuclear power plants, laser surface modification and laser induced plasma analysis., etc.
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Kim, JE., Song, MK., Han, MS. et al. A study on the application of laser cleaning process in shipbuilding industries using 100 W fiber laser. J Mech Sci Technol 35, 1421–1427 (2021). https://doi.org/10.1007/s12206-021-0113-3
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DOI: https://doi.org/10.1007/s12206-021-0113-3