Energy consumption and performance optimisation of laser cleaning for coating removal

Ouyang, Jinglei; Mativenga, Paul; Goffin, Nicholas J.; Liu, W.; Liu, Z.; Mirhosseini, Nazanin; Jones, Lewis C.R.; Woolley, Elliot; Li, L.

doi:10.1016/j.cirpj.2022.02.001

Cited by 15 publications

(3 citation statements)

References 25 publications

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“…Chen et al [15] explored how the laser processing speed influences the roughness and hardness of the steel surface, examining the effects of various parameters on surface properties post-laser treatment. Similarly, Ouyang et al [16] applied Taguchi's method in experimental design for laser cleaning, discovering that adjustments in laser pulse frequency and scanning speed can significantly enhance the cleaning efficiency while concurrently reducing the system's specific energy. These investigations have contributed valuable insights into the laws governing surface structure modifications of materials subjected to laser cleaning.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Laser Parameters on Surface Physical Characteristics and Corrosion Resistance of 20 Steel in Laser Cleaning

He,

Yang,

Yang

et al. 2024

Applied Sciences

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The rusting of metals brings huge losses to the industry every year, and post-treatment of rusted metals to restore their properties to the initial state is a hot topic of current research. In particular, 20 steel, which is widely used in various structural components such as ships, is prone to oxidation in atmospheric environment. Therefore, in this study, a nanosecond pulsed laser was used to remove the rust layer on the surface of 20 steel. The effects of different energy densities and spot overlap rates on the roughness, surface morphology, chemical composition, microhardness and corrosion resistance of the rust layer were analyzed. The results showed that the best cleaning effect was achieved at an energy density of 4.26 J/cm2 and a spot overlap rate of 75%. Under these conditions, the rust layer was completely removed without damage to the substrate, and it even improved the corrosion resistance of 20 steel. At energy densities of 1.42 J/cm2 and 2.84 J/cm2, the rust layer was not completely removed, while at 5.68 J/cm2, the rust layer was removed but the substrate was damaged. In addition, the mechanism of rust removal and substrate damage is discussed.

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Section: Introductionmentioning

confidence: 99%

Effect of Different Laser Parameters on Surface Physical Characteristics and Corrosion Resistance of 20 Steel in Laser Cleaning

He,

Yang,

Yang

et al. 2024

Applied Sciences

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“…Laser surface machining, as a pollution-free and high-efficiency technique, has been applied to various materials including plastics, metals, and their composites, and the results have been presented in various publications [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Rapid development of lasers has made it possible to perform surface modifications, such as coating removal and adhesive joints [ 11 , 12 , 13 , 14 , 15 ]. A continuous high-power semiconductor laser (HPDL) was used to remove rubber coating from a steel surface and the laser removal efficiency was as high as 250 mm 3 /s [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Investigations on 2Cr13 Stainless Valves after Dry-Type Laser Degumming

Zhang

et al. 2022

Micromachines

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The disabled glue on valve surfaces is known to reduce aircraft durability and performance. In this paper, glue contaminants were removed from 2Cr13 stainless valves by dry-type laser processing with a cold air gun and compared with the chemical soaking method. The laser-processed surface was examined by white-light interferometer, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffractometer, hardness tester, and metallographic microscopy. The substrate surface became a little smoother but also had deeper dips due to laser thermal melting. After laser degumming, the new constituent was found in the laser-irradiated region and analyzed as FeCr0.29Ni0.16C0.06, since the ratio of chemical compositions changed. Based on our simulation and experiments, the temperature of the workpiece was effectively controlled by the cold air gun, and its physical properties, including hardness and metallographic structure, were hardly changed. It was shown that laser degumming provides an alternative method for metal valve cleaning.

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“…The most popular paint removal technology at home and abroad is chemical stripping. 2 In addition, it also includes mechanical polishing, optical (laser), 3 thermal/ablative repair technology or assistive technology, 4,5 abrasive jet machining 6 and infrared- and infrared-sonication hybrid technology. 7 However, chemical paint strippers based on methylene chloride are not the best strategy for CFRP substrates because they chemically attack the organic matrix of the composite material and weaken the material.…”

Section: Introductionmentioning

confidence: 99%

Development of coating removal From carbon fiber reinforced plastic skin surfaces by abrasive jet machining

Zhao

Zeng

et al. 2022

Journal of Composite Materials

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Removing localized damage coatings on new-generation fighters’ carbon fiber reinforced plastic (CFRP) skin surfaces has become a research hotspot. A practical method for removing the CFRP skin coating without damaging the substrate was proposed in this study. Modeling was used to examine the particle velocity and contact force of a single abrasive and the erosion depth, width, and material removal rate of the coating. The eroded surface morphology, roughness and erosion depth of different processes were obtained by the Taguchi method. The results show that plastic abrasive jet machining (PAJM) can remove coatings layer by layer without damaging the substrate. A jet pressure of 0.35 MPa is recommended as a critical jet pressure to avoid damaging the fibers. This procedure offers more advantages than traditional removal methods (chemical stripping or manual sanding). A theoretical reference for coating removal on CFRP skin surfaces is provided in this paper.

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Energy consumption and performance optimisation of laser cleaning for coating removal

Cited by 15 publications

References 25 publications

Effect of Different Laser Parameters on Surface Physical Characteristics and Corrosion Resistance of 20 Steel in Laser Cleaning

Effect of Different Laser Parameters on Surface Physical Characteristics and Corrosion Resistance of 20 Steel in Laser Cleaning

Investigations on 2Cr13 Stainless Valves after Dry-Type Laser Degumming

Development of coating removal From carbon fiber reinforced plastic skin surfaces by abrasive jet machining

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