Theoretical and experimental studies of ultra-short pulsed laser drilling of steel

Andreas Michalowski; Yuan Qin; Rudolf Weber; Thomas Graf

doi:10.1117/12.2058936

1 May 2014 Theoretical and experimental studies of ultra-short pulsed laser drilling of steel

Andreas Michalowski, Yuan Qin, Rudolf Weber, Thomas Graf

Proceedings Volume 9135, Laser Sources and Applications II; 91350R (2014) https://doi.org/10.1117/12.2058936
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

Abstract

Methods for the machining of metals based on the use of ultra-short pulsed laser radiation continue to gain importance in industrial production technology. Theoretical considerations and experimental studies on laser drilling of steel are discussed. The applicability of geometrical optics to calculate the absorbed energy distribution inside small blind holes is investigated theoretically. A model for melt transport during ultra-short pulsed drilling is proposed and verified experimentally. It confirms that helical drilling is advantageous for machining burr-free holes.

Citation Download Citation

Andreas Michalowski, Yuan Qin, Rudolf Weber, and Thomas Graf "Theoretical and experimental studies of ultra-short pulsed laser drilling of steel", Proc. SPIE 9135, Laser Sources and Applications II, 91350R (1 May 2014); https://doi.org/10.1117/12.2058936

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