Optimization On Of Cutting Parameters (Turning) Using Taguchi Method For Nickel-Based Alloy

Abstract

The setting of cutting parameters is out most important in any machining processes for qualitative and quantitative reasons. The examples of qualitative output in machining could be surface finish/roughness, dimensional and geometrical accuracies, etc. Whereas the quantitative output could be Material Removal Rate (MRR), tool life, etc. Most of the existing engineering materials, especially metallic materials have a set of proven cutting parameters when undergo machining processes. The obvious reasons are due to extensive studies by the cutting tool manufacturers as well as many researchers. This may not true in machining of newer materials such as advanced materials that specially produced to work under demanding or extreme conditions. The materials mentioned include some super alloy like Titanium, Hastelloy, Incoloy, Inconel, etc. The present work discusses an investigation into the use of Taguchi Methodology for optimizing surface roughness generated by turning operation. The controlled cutting parameters include cutting speed, feed rate, and depth of cut were performs under flooded coolant condition of turning process. The experiments were performed with Nickel-based Inconel 600 alloy as work-piece and PVD coated carbide tool as cutting tool material using 27 verified combinations of controlled levels and factors. Experiments were carried out and adequate turning samples of work-pieces were produced, the surface roughness data were taken followed by ANOVA analysis using mentioned Taguchi method for determining of most significant set of parameters. From the results of the experiments and analysis of ANOVA, it is found the feed rate is most significant parameter, spindle speed is significant and depth of cut is least significant parameter in effecting surface roughness. In conclusion, the objective of this project to optimize the cutting parameters on turning Inconel 600 for one of the qualitative output that is surface roughness is achieved.