Optimization of Machining Parameters of Titanium Alloy for Tool Life

Article English OPEN
Chauhan, Dinesh Kumar ; Chauhan, Kapil Kumar (2013)
  • Publisher: Journal of Engineering Computers & Applied Sciences
  • Journal: Journal of Engineering Computers & Applied Sciences (issn: 2319-5606, eissn: 2319-5606)
  • Subject: Engineering; Mechanical Engineering | Minitab 15, Optimization, Orthogonal array, PVD Cemented carbide tool, Titanium alloy, Tool life, Taguchi method, Signal-to-Noise Ratio(S/N).

High speed machining of highly reactive material like titanium and its alloys is still far away uncertain. For this reason, it is wiser to study the optimization of Machining parameters under transient cutting speed before advancing to high speed machining. This paper presents the influence of machining parameters like coolant flow rate, cutting speed on Tool life of Titanium alloy during machining. Machining process is carried out in dry or nearly dry condition using Physical Vapor Disposition (PVD) coated cemented carbide tools. For near dry machining, two levels of coolant flow rate of 50 and 100 mL/H were investigated. A plan of experiments based on Taguchi technique has been used to acquire the data. An Orthogonal array and signal to noise (S/N) ratio are employed to investigate the machining characteristics of titanium alloy & optimize the machining parameters. In optimization technique, Taguchi method is used for optimization for Variable parameters coolant flow rate (0, 50& 100mL/Hr), cutting speed (120, 135 & 150m/min), feed rate (0.1, 0.125, 0.25mm/tooth) and depth of cut (2, 2.25 & 2.5 mm). Finally Minitab 15, a comprehensive DOE tool is used for multilevel factorial screening designs to help you find the critical factors that lead to breakthrough improvements
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