Research on laser deposition repair aircraft vertical tail beam

In this work, the laser cleaning process of the surface coating for the Ti-6Al-4V titanium alloy was investigated using a pulsed laser, including cleaning time, laser power, and scanning speed. Meanwhile, the corresponding mechanism of laser cleaning was analyzed using the surface morphology, element content change, coating fracture cross section, and phase change. Results demonstrated that the quality of the coating removed by laser cleaning increased first and then decreased with the increase in the three key process parameters of laser cleaning time, laser power, and scanning speed, respectively. The superior laser cleaning efficiency was achieved when the laser power was 15 W, the cleaning time was 8, and the scanning speed was 400 mm/s. It is concluded that the removal of the titanium alloy surface coating is the result of the coupling of the cleaning mechanisms such as ablation and thermal expansion.

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Experimental study and mechanism analysis of a pulsed laser cleaning aluminum alloy process

Zhou,

Zhao,

Zhang

et al. 2024

Appl. Opt.

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A pulse laser with a wavelength of 1064 nm and a pulse width of 1 µs was used to experiment on the coating of a 2024 aluminum alloy surface. The removal performance of the pulse laser cleaning coating was explored by a single factor analysis and orthogonally conditions, and the effects of the laser power, scanning speed, and pulse frequency on the quality of laser coating removal were summarized. The mechanisms of pulse laser cleaning the coating were studied. The results show that the three parameters of the laser power, scanning speed, and pulse frequency have different effects on the quality of laser coating removal. Among them, with the increase of the scanning speed and pulse frequency, the quality of laser cleaning first increases and then decreases, respectively. With the increase in laser power, the quality of laser cleaning increases. A good laser cleaning quality can be achieved at the laser power of 16.5 W, a scanning speed of 600 mm/s, and a pulse frequency of 30 kHz. The laser cleaning coating involves a variety of mechanisms such as combustion, explosion, gasification, thermal vibration stripping, and laser plasma impact. The result can provide practical references for a better searching of the paint removal.

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Research on laser deposition repair aircraft vertical tail beam

Cited by 3 publications

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Laser cleaning performance and mechanism in stripping of Polyacrylate resin paint

Laser cleaning performance and mechanism in stripping of Polyacrylate resin paint

Pulsed laser cleaning of resin-based surface coating on the titanium alloy substrate

Experimental study and mechanism analysis of a pulsed laser cleaning aluminum alloy process

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