Experimental study of surface quality during coaxial water-jet assisted nanosecond laser drilling

Chenhu Yuan; Haitao Wang; Jiajia Wang; Bin Wang; Wenwu Zhang

doi:10.1117/12.2603059

31 August 2021 Experimental study of surface quality during coaxial water-jet assisted nanosecond laser drilling

Chenhu Yuan, Haitao Wang, Jiajia Wang, Bin Wang, Wenwu Zhang

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119071W (2021) https://doi.org/10.1117/12.2603059
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

As a new type of composite processing technology, coaxial water-jet assisted laser drilling (CWALD) has significant advantages in improving the surface quality of micro-holes compared with traditional laser processing. The filling drilling of the DD6 super alloy was carried out by a coaxial water-jet assisted pulsed nanosecond laser. The effects of laser pumping current, laser frequency, and water-jet velocity on the surface quality of micro-holes were studied by response surface methodology (RSM). The results of confocal microscope observation have shown that the surface quality of micro-holes decreases significantly with the increase of laser average power and laser frequency, and increases with the increase of water-jet velocity. This paper expounds on the causes of surface quality defects of micro-holes and uses the optimized process parameters to process micro-holes with low surface line roughness and good roundness.

Citation Download Citation

Chenhu Yuan, Haitao Wang, Jiajia Wang, Bin Wang, and Wenwu Zhang "Experimental study of surface quality during coaxial water-jet assisted nanosecond laser drilling", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119071W (31 August 2021); https://doi.org/10.1117/12.2603059

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