Abstract:
This paper analyses the effect of turning parameters for Ti-6Al-4 V and Ti-5553, which are generally used in aerospace and industrial applications due to their superior strength to density ratio, corrosion resistance and ability to withstand elevated temperatures. The input variables used in this study are Cutting Speed (CS), Depth of Cut (DoC) and Feed Rate (FR). A three-dimensional machining model is designed in Deform-3D®, an FEM software, to predict results. The output parameters temperature, effective stress, effective strain, and effective strain rate obtained by turning Ti-6Al-4 V & Ti-5553 were analysed based on the input parameters. Taguchi technique and ANOVA were performed for statistical analysis and interpretation of the results. The favourable input values for performing turning operation on Ti-6Al-4 V workpiece with TNMA332_KC90 tool are CS 2000 rpm, Doc 6 mm, FR 0.6 mm/s and with TNMA332 tool are 1750rpm, 2 mm, 0.6 mm/s at high temperatures. Similarly, the optimum input values for Ti-5553 workpieces with TNMA332_KC90 tool are 2000 rpm, 4 mm, 0.9 mm/s and with tool TNMA332 are 150 rpm, 2 mm, 0.3 mm/s. The comparison between coated and uncoated Tungsten Carbide (WC) tools states that optimum values obtained are better in terms of maximum temperature and effective stress, when a coated tool is used rather uncoated, for both workpieces.
