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Laser machining tools for CMC

News International-French

24 Feb 2014

JEC Europe 2014 - To meet the requirements of the ACAMAC project (Advanced Capabilities in Machining CMC by Innovative Laser-based Techniques) in collaboration with Herakles (SAFRAN group), ALPhANOV acquired a new cutting head to machine extremely hard materials such as ceramic matrix composites while ensuring very high quality. 

This new device injects a pressurized assist gas, collinearly with the laser beam, to eject more efficiently the dust resulting from the laser/material interaction while reducing the possible oxidation and nitridation phenomena.

The divergence of the laser beam introduces a natural taper during laser drilling and cutting, a phenomenon that limits the maximum depth that can be achieved. In order to overcome this limitation, ALPhANOV also acquired a state-of-the-art trepanning head including a set of rotating optics (20 000 rpm). This head makes it possible to vary simultaneously the trepanning diameter and the incidence angle of the laser beam. This equipment can operate with a near-IR beam and a pulse duration ranging from a few milliseconds to several hundred femtoseconds.

ALPhANOV’s engineers can meet technical requirements on challenging tasks such as: high aspect ratio drilling (above 10:1); drilling and cutting with controlled taper: positive and negative taper, cylindrical hole, variation of conicity along the hole depth; gas-assisted laser drilling for reduced heat-affected zones and sidewall oxidation.

More information:
Booth: G54