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JWJ > Volume 37(5); 2019 > Article
Journal of Welding and Joining 2019 October;37(5) :435-440.
Published online October 21, 2019.
doi:https://doi.org/10.5781/JWJ.2019.37.5.1
A Study on the Effect of Overlap Rate on Laser Beam Cleaning Characteristics while Cleaning Paint Using a Low Power Pulsed Laser(Ⅰ) - Analysis of Laser Cleaned Surface Characteristics Based on Number of Scans -
Ji-Eon Kim1  , Moo-Keun Song2  , Jong-Myoung Lee3  , Jeong-Hun Hyun4  , Jong-Do Kim5 
1Ocean Science and Technology School, Korea Maritime & Ocean Univ., Busan, 49112, Korea
2Laser Advanced Machining Support Center, Korea Maritime & Ocean Univ., Busan, 49112, Korea
3IMT Co., Ltd., Suwon, 16675, Korea
4Daewoo Shipbuilding & Marine Engineering Co., Ltd., Geoje, 53302, Korea
5Division of Marine Engineering, Korea Maritime & Ocean Univ., Busan, 49112, Korea
Correspondence: Jong-Do Kim  Email: jdkim@kmou.ac.kr
Received August 4, 2019  Revised October 8, 2019  Accepted October 14, 2019  Published online October 21, 2019
ABSTRACT
In the shipbuilding and marine fields, the pre-treatment of painted surfaces for cleaning creates environmental pollution problems. Laser cleaning is an eco-friendly surface pre-treatment process which selectively removing contaminants on a surface by vaporizing them with a laser beam. In this study, a pulse laser was employed to laser clean shop primer and epoxy painted steel plates. The evaporation characteristics of the two paints and the laser cleaning characteristics were analyzed according to the number of laser scans. It was determined that the removal of epoxy paint, which has a relatively low evaporation point, was higher than that of the shop primer paint. In addition, to remove the coating surface and oxide layer while minimizing damage to the base metal, it is important to select the laser cleaning parameters including the number of laser scans.
Keywords: Laser cleaning | Pulse laser | Shop primer | Epoxy | The number of laser scans
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A Study on the Effect of Overlap Rate on Laser Beam Cleaning Characteristics while Cleaning Paint Using a Low Power Pulsed Laser(Ⅱ) - Analysis of Laser Cleaned Surface Characteristics for Various Pulse Overlap Rates -  2019 October;37(5)
A Study on the Effect of Overlap Rate on Laser Beam Cleaning Characteristics while Cleaning Paint Using a Low Power Pulsed Laser(Ⅱ) - Analysis of Laser Cleaned Surface Characteristics for Various Pulse Overlap Rates -  2019 October;37(5)
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