Analysis of Hard Machining of Titanium Alloy by Taguchi Method

Hard Titanium alloys have good strength to weight ratio and resistance against corrosion. Machining such hard alloys causes lot of tool wear. Hard machining is a dry machining process using a single point cutting tool for machining hardened material whose Vickers hardness number is above 45. The main advantage of hard turning is the possibility of eliminating grinding operations and it is environment friendly. The surface integrity of the work piece has to be maintained to give longer life to the machined component. The investigation was done turning titanium alloy in a CNC machine using the L9 orthogonal array as plan of experiments. The objective is to optimize the cutting parameters which is done using Taguchi method. Based on the response table obtained by DOE the optimum surface roughness and tool wear was obtained. The tool wear at different operating conditions were found using confocal microscope and the surface roughness was determined using Form Talysurf. (C) 2017 Published by Elsevier Ltd.