Abstract
Titanium alloys are some of the recently developed advanced materials having excellent mechanical properties including high strength to weight ratio and are finding extensive applications in many industries including aerospace industries. But these alloys have poor machinability. Certain non conventional machining techniques have been found to be useful in machining these alloys. Wire-Electro Discharge Machining (WEDM) is one such advanced technique employed to generate intricate shapes when hard metals like titanium is to be cut. The efficient titanium alloy machining involves a proper selection of process parameters to optimize the performance characteristics including material removal rate (MRR) and surface roughness (Ra). In the present research work, the effects of certain process parameters such as peak current (Ip), pulse on time (Ton), pulse off time (Toff) and servo reference voltage (SV) on MRR and Ra were investigated. The experimental plan was based on Taguchi method using four factors each at three levels. In addition, analysis of variance (ANOVA) was implemented to identify the significant WEDM process parameters.
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