L. A. M. (Laser Assisted Machining) Turning Tests on Inconel 718
The aim of Laser Assisted Machining is to improve the machinability of hard to work material on traditional turning or milling centres. This technology involves transferring on a machine tool a laser beam, which is focused onto the process material just above the zone where it is cut by the tool. Previous experiences in LAM turning showed that laser assistance can reduce cutting force, limit tool wear and increase the micro and macro geometrical characteristics of worked material. An economical model developed at ITIA showed that today it is economically advantageous when working materials with high added value. In the ITIA labs a prototype of a LAM centre was built by connecting a 2500 W CO2 laser with a lathe. The research efforts at ITIA focused mainly on the utilisation of the Nickel based superalloy Inconel 718 with a yield stress almost twice that of normal steel. In ideal conditions the cutting forces can be reduced by up to 30%.
KeywordsLaser Assisted Machining LAM Pyrometer
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