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).

Metal micro drilling combining high power femtosecond laser and trepanning head / Kling, R; Dijoux, M; Romoli, Luca; Tantussi, F; Sanabria, J; Mottay, E.. - 8608:(2013). (Intervento presentato al convegno Conference on Laser-Based Micro- and Nanopackaging and Assembly VII (LBMP) as a part of LASE Photonics West tenutosi a San Francisco, CA nel FEB 06-07, 2013) [10.1117/12.2002083].

Metal micro drilling combining high power femtosecond laser and trepanning head

ROMOLI, Luca;
2013-01-01

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).
2013
Metal micro drilling combining high power femtosecond laser and trepanning head / Kling, R; Dijoux, M; Romoli, Luca; Tantussi, F; Sanabria, J; Mottay, E.. - 8608:(2013). (Intervento presentato al convegno Conference on Laser-Based Micro- and Nanopackaging and Assembly VII (LBMP) as a part of LASE Photonics West tenutosi a San Francisco, CA nel FEB 06-07, 2013) [10.1117/12.2002083].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2756326
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