22-10-2014, 02:29 PM
Abstracts: Existing manufacturing industries are fronting challenges from these advanced nascent materials viz. nano material ,ceramics, super alloys, and metal matrix composites, that are hard and difficult to machine, requiring high accuracy, surface quality excellence which affects and increases machining cost. To meet these tasks, unconventional machining processes are being used to achieve optimum metal removal rate, better surface finish and greater dimensional correctness, with a reduced amount of tool wear. Electric Discharge Machining (EDM), a unconventional process, has a extensive applications in automotive, defense, aerospace and micro systems industries plays an outstanding role in the development of least cost products with more consistent quality assurance. Electrical discharge machining (EDM) is one of the most extensively used non-conventional material removal processes. Its unique feature of using thermal energy to machine electrically conductive parts regardless of hardness has been its distinctive advantage in the manufacture of mould, die, automotive, aerospace and surgical components. In addition, EDM does not make direct contact between the electrode and the work piece eliminating mechanical stresses, chatter and vibration problems during machining. In this experiment, we use the LM 25 aluminium alloy as a metal matrix and SiC of 120 mesh as a reinforcement material with 10, 15 and 20 % Wt variance into the composite material. We conduct the stir casting for cast the test specimen and then measure the output variables of EDM machine. Develop the regression model for the experimentation results and validate it. Optimize the results with the help of the TAGUCHI method.