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Proceedings Paper

Theoretical and experimental studies of ultra-short pulsed laser drilling of steel
Author(s): Andreas Michalowski; Yuan Qin; Rudolf Weber; Thomas Graf
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Paper 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.

Paper Details

Date Published: 1 May 2014
PDF: 9 pages
Proc. SPIE 9135, Laser Sources and Applications II, 91350R (1 May 2014); doi: 10.1117/12.2058936
Show Author Affiliations
Andreas Michalowski, Robert Bosch GmbH (Germany)
Yuan Qin, Nanjing Univ. of Science and Technology (China)
Rudolf Weber, Univ. Stuttgart (Germany)
Thomas Graf, Univ. Stuttgart (Germany)

Published in SPIE Proceedings Vol. 9135:
Laser Sources and Applications II
Jacob I. Mackenzie; Helena JelÍnková; Takunori Taira; Marwan Abdou Ahmed, Editor(s)

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