Improvements on Machinability and Efficiency for Laser-assisted Machining of Titanium Alloys via Experimental and Thermal Analyses

Abstract

Machining of titanium alloys has the problems of high machining costs and short tool life owing to their high specific strength and corrosion resistance. Laser-assisted machining (LAM) is a method that addresses the aforementioned issues. In this study, we proposed a LAM system that heats the workpiece before the cutting zone improve the machinability of titanium alloys. The experiments were conducted with laser power varying from 20 W to 60 W at different cutting speeds. Measurements of the tool wear of LAM revealed a 55% increase in tool life compared to that in conventional machining (CM). The proposed LAM system is a promising method for processing difficult-to-machine materials with high efficiency.