Metal microdrilling combining high power femtosecond laser and trepanning head

R. Kling; M. Dijoux; L. Romoli; F. Tantussi; J. Sanabria; E. Mottay

doi:10.1117/12.2002083

15 March 2013 Metal micro drilling combining high power femtosecond laser and trepanning head

R. Kling, M. Dijoux, L. Romoli, F. Tantussi, J. Sanabria, E. Mottay

Proceedings Volume 8608, Laser-based Micro- and Nanopackaging and Assembly VII; 86080F (2013) https://doi.org/10.1117/12.2002083
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

Trepanning heads are well known to be efficient in high aspect drilling and to provide a precise control of the hole geometry. Secondly, femtosecond lasers enable to minimize the heat effects and the recast layer on sidewalls but are typically used on thin sheet. The combination of both present a high potential for industrial applications such as injector or cooling holes where the bore sidewall topology has a major influence on the dynamics of the gas flow. In this paper we present results using this combination. The effect of pulse energy, repetition rate and revolution speed of the head on both geometry and roughness are discussed. The quality of the sidewall is checked by roughness measurement and by metallographic analysis (SEM; chemical etching, micro hardness).

Citation Download Citation

R. Kling, M. Dijoux, L. Romoli, F. Tantussi, J. Sanabria, and E. Mottay "Metal micro drilling combining high power femtosecond laser and trepanning head", Proc. SPIE 8608, Laser-based Micro- and Nanopackaging and Assembly VII, 86080F (15 March 2013); https://doi.org/10.1117/12.2002083

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