Abstract
Electric discharge machining (EDM) is a non-traditional method in which thermoelectric energy helps to remove material from the work piece. EDM is widely used in machining material irrespective of its strength and any complex shape can be easily machined. EDM tool plays an important role in the effectiveness of the whole machining process. In this paper, sintered composite material tool electrodes have been prepared with Copper and Tin and have been used for the electric discharge machining of high chromium platinum steel. High chromium platinum steel has applications in the manufacturing of cardiovascular stents. The machining of high chromium platinum steel was accomplished using these electrodes on EDM. Taguchi method has been used to find the Material removal rate (MRR) and same has been compared between composite material electrode and reference copper electrode. The results were obtained using analysis of variance (ANOVA) and Taguchi’s approach. There was an increase of 96.31% of MRR when input current is increased from 5 A to 15 A while using Cu Electrode. In case of copper-tin composite material electrode, there was an increase of 99.73 % in MRR when input current was increased from 5A to 15A
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