Taiwen Qiu, Junlan Yi, Cheng Cheng, Haoran Sun, Ze Tian, Zhenglong Lei. Characteristics of Nanosecond Pulse Laser Cleaning Paint Coatings on 2024 Aluminum Alloy Surface[J]. Laser & Optoelectronics Progress, 2021, 58(5): 0514001
- Laser & Optoelectronics Progress
- Vol. 58, Issue 5, 0514001 (2021)
Fig. 1. Surface morphology of unpainted substrate
Fig. 2. Schematic of nanosecond laser cleaning optical path
Fig. 3. Cleaning effect of nanosecond pulse laser with different pulse frequencies and pulse widths
Fig. 4. Cleaning effect of nanosecond pulse laser with different average laser powers
Fig. 5. Surface morphologies of samples cleaned by nanosecond pulse laser. (a) Sample 5#; (b) sample 8#; (c) sample 9#
Fig. 6. Defect size on the surface of samples cleaned by nanosecond laser. (a) Sample 5#; (b) sample 8#; (c) sample 9#; (d)sample cleaned under the conditions of laser power of 600 W，pulse width of 60 ns，and pulse frequency of 20 kHz
Fig. 7. Surface roughness and crater depth of samples cleaned by laser at different laser powers and original substrate
Fig. 8. EDS analysis of the surface of original substrate and sample cleaned by nanosecond pulse laser. (a) Original substrate; (b) sample 8#
Fig. 9. Paint removal thickness and substrate damage thickness under different laser powers with pulse width of 60 ns and pulse frequency of 20 kHz
Fig. 10. Surface microhardness of original substrate and sample cleaned by nanosecond pulse laser
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Table 1. Technological parameters of laser cleaning test
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