Research on Water-Assisted Femtosecond Laser Drilling Process for Superalloy
DOI: 10.23977/jpim.2024.040104 | Downloads: 4 | Views: 116
Author(s)
Liang Wang 1, Rong Guan 2, Lei Zhao 3, Qunyong Zhang 4, Yuan Li 1, Changjian Wu 1
Affiliation(s)
1 Faculty of Mechanical and Material Engineering, Huaiyin Institute of Technology, Huai'an, China
2 School of Art and Design, Huaiyin Institute of Technology, Huai'an, China
3 Faculty of Foreign Languages, Huaiyin Institute of Technology, Huai'an, China
4 Faculty of Mathematics and Physics, Huaiyin Institute of Technology, Huai'an, China
Corresponding Author
Rong GuanABSTRACT
Due to its ultrashort pulse duration and extremely high power density, femtosecond laser enables "cold" material processing, offering unparalleled advantages over traditional laser processing methods. As a result, it holds great potential in fields such as high-end equipment manufacturing and ultraprecision machining. However, current femtosecond laser processing technology faces challenges such as blind selection of processing parameters and unstable processing quality, which limit its further development and application. This paper primarily analyzes the characteristics of laser micromachining, studies the interaction mechanisms between femtosecond lasers and materials, and further investigates the theoretical basis of water-assisted laser processing technology. Based on the theoretical study, GH4169 superalloy was selected as the experimental material, and a circular cutting method was adopted in a water-assisted laser processing setup. A single-factor experimental study was conducted on femtosecond laser processing of blind holes in GH4169 superalloy to explore the effects of different laser parameters on the quality of blind hole machining. The study revealed the influence patterns of scanning speed and laser pulse energy on the diameter and morphology of blind holes. Finally, by comparing and analyzing the taper and inner wall machining quality of the blind holes, the optimal processing parameters for femtosecond laser machining of blind holes in GH4169 superalloy were determined. The results verified the advantages of femtosecond laser processing in a water-based environment compared to an air environment for machining micro holes in superalloys, providing a theoretical foundation and reference for further research on water-assisted femtosecond laser processing of blind holes in superalloy.
KEYWORDS
Femtosecond Laser, High-Temperature Alloys, Water-Assisted, Laser Drilling, Process OptimizationCITE THIS PAPER
Liang Wang, Rong Guan, Lei Zhao, Qunyong Zhang, Yuan Li, Changjian Wu, Research on Water-Assisted Femtosecond Laser Drilling Process for Superalloy. Journal of Precision Instrument and Machinery (2024) Vol. 4: 20-30. DOI: http://dx.doi.org/10.23977/jpim.2024.040104.
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