International Journal of Engineering and Technology

The aim of this paper is to analyse the influence of turning parameters on the flank wear and chip morphology during a turning process. Here, the work piece material, Super duplex stainless steel SAF 2507 was turned with uncoated carbide tool. Liquid CO2 which acts as a coolant, forms a gas cooled environment. The gas cooled machining in turn was compared with the dry and wet machining. Totally 18 experiments were conducted in order to measure the flank wear (Vb) with a tool makers microscope. The experiments were performed with the same cutting conditions and tool characteristics on the three methods of cooling. During the experimental procedure the removed chips were collected and evaluated together with the various cutting conditions. Using MINITAB 15 software, the optimized values of machining parameters were predicted using response surface methodology. Confirmation tests were carried out to compare the results of predicted values with the experimental value. The flank wear and the chips produced at the optimized values are analysed by scanning electron microscope (JOEL Model 6390). From the experimental results, it was found that flank wear gets reduced in case of gas cooled machining.