The influence of nanosecond laser pulse energy density for paint removal

Li, Xiaokui; Zhang, Qiuhui; Zhou, Xin; Zhu, Daoqiang; Liu, Quanxi

doi:10.1016/j.ijleo.2017.11.010

Cited by 48 publications

(15 citation statements)

References 15 publications

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“…Several parameters must be considered during the coating removal process, which are laser wavelength (λ), laser fluence (F), pulse width (PW), and repetition rate (RR) (Brygo et al, 2006). Inappropriate selection of laser parameters may lead to overexposure, which may result in metal substrate damage due to the high energy density of the laser beam, whereas underexposure can leave residual contaminations on the surface of the substrate (Lee & Watkins, 2000;Li, Zhang, Zhou, Zhu, & Liu, 2018). However, the damage to the substrate material can be eliminated by applying optimum operational laser parameters without external distraction during the cleaning process (Han et al, 2017;Heidelmann, 2011).…”

Section: Laser Parametersmentioning

confidence: 99%

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

Razab

Noor

Jaafar

et al. 2018

Journal of Radiation Research and Applied Sciences

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Laser cleaning has been identified as an ideal technology to replace conventional chemical techniques in the motorcar coating removal process to maintain the sustainability of our environment. This is due to the unique characteristics of this cleaning technique, such as being versatile, precise, controllable, lack of waste generation, and environmental friendly process. This laser technique can remove the coating layers without using chemical products and prevents the metal substrate surfaces from defect. This paper reviews the potential of incorporating pulsed Nd:YAG laser and its principals in coating removal for automotive industry with respect to these characteristics.

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Section: Laser Parametersmentioning

confidence: 99%

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

Razab

Noor

Jaafar

et al. 2018

Journal of Radiation Research and Applied Sciences

View full text Add to dashboard Cite

show abstract

“…As is well reported, many factors including but not limited to the pulse frequency, the scanning line interval, the scanning speed and the laser fluence are able to affect the efficiency of laser cleaning [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. According to Zhao et al, the energy incorporated in each single pulse increased as the pulse frequency decreased, which would potentially trigger the plasma shielding effect near the painting layer surface once the pulse energy reached to a certain value.…”

Section: Introductionmentioning

confidence: 99%

“…According to Zhao et al, the energy incorporated in each single pulse increased as the pulse frequency decreased, which would potentially trigger the plasma shielding effect near the painting layer surface once the pulse energy reached to a certain value. Of particular note, this resulting plasma shielding effect has a potential to cause the recession phenomenon through absorbing the energy involved in lasers and accordingly, hinders the further cleaning effectiveness to the painting layer [17][18][19]. Besides, the larger scanning line interval was reported to decrease the corresponding cleaning efficiency.…”

Section: Introductionmentioning

confidence: 99%

A characterization of laser cleaning painting layer from steel surface based on thermodynamic model

Ding

Wang

et al. 2021

Int J Adv Manuf Technol

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In this study, the environmentally friendly nanosecond ultraviolet (UV) laser is innovatively employed laser cleaning to remove the painting layer from the AH36 steel substrate. The feasibility of UV laser cleaning the painting layer is innovatively proposed and it has been calculated by the model theoretically, followed by elaborating the prominent interaction mechanism of UV laser exactly. The initial cleaning threshold and completely cleaning threshold are 2 J/cm 2 and 5 J/cm 2 , respectively. Afterwards, the UV laser cleaned surface quality is evaluated by the scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), optical microscopy (OM) and optical profiler (OP), respectively. The mechanical properties have enhanced dramatically after laser cleaning and characterized by the Vickers hardness tester and universal testing machine. By varying laser fluences (2, 5, 7 J/cm 2 ) during laser cleaning, microstructures registering various sizes of corrugated shaped, craters and ring-shaped could be acquired. In addition, the mechanical properties analysis including rapid melting, quenching and dislocation density effects illustrates that laser cleaning could effectively increase surface microhardness, tensile strength and bending strength. Thus, laser cleaning method has emerged as a favourable means to strip painting layer in lieu of traditional methods for marine industry as well as this study could promote the development of laser cleaning in the field of marine engineering.

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“…In the recent technology era, laser cleaning is highefficient and newly emerging environmentally-friendly technology. This technology can be widely applied to many fields, such as cleaning electronic elements, removing oil dirt, and painting [1,2]. Therefore, paint removal by laser technique, where the laser parameter is a key factor that decides the paint removal efficiency of the surface cleaning process.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Nanosecond Fibre Laser on the Removal of Paint on Metallic Surface

2021

Int. j. technol. eng. stud.

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This research aims to study the effect of nanosecond laser parameters on the paint removal process and obtain a set of parameters that would result in the highest paint removal efficiency. In this study, the effect of laser paint removal parameters such as power, defocus distance, and the number of loops are studied with an optical microscope to observe surface features. The laser paint removal process is conducted using the IPG YLM 200/30 -Q pulsed fiber laser machine. The process sample was examined with an optical microscope to analyze the effectiveness of this laser paint removal process. The results indicated that the power and number of loops significantly enhance the paint removal process. The selection of correct frequency, power, hatching distance, scanning speed, and defocus distance also play a significant part in the efficiency of the laser paint removal process.

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The influence of nanosecond laser pulse energy density for paint removal

Cited by 48 publications

References 15 publications

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

A review of incorporating Nd:YAG laser cleaning principal in automotive industry

A characterization of laser cleaning painting layer from steel surface based on thermodynamic model

The Influence of Nanosecond Fibre Laser on the Removal of Paint on Metallic Surface

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