ISSN: 2319-8753 International Journal of Innovative Research in Science, Engineering and Technology (An ISO 3297: 2007 Certified Organization) Vol. 3, Issue 1, January 2014 Copyright to IJIRSET www.ijirset.com 8800 Experimental Investigation on MRR of Pulse Electrochemical machining (PECM) based on Taguchi Method P.V.Jadhav 1 , D.S.Bilgi 2 , Sumit Sharan 3 , Rachit Shrivastava 4 Research Scholar, Department of Mechanical Engineering, B. V. U., College of Engineering, Pune, Maharashtra, India, 1 Principal, B. V. Women‟s College of Engineering, Pune, India, 2 Student, Department of Production Engineering B.V.U. College of Engineering, Pune, Maharashtra, India, 3,4 Abstract: The Electrochemical Machining (ECM) is widely used in machining variety of components used in aerospace, automotive, defense & medical applications. Due to low machining accuracy ECM is yet to be a best alternative process. This paper presents experimental investigation of PECM parameters such as voltage, feed rate, and pulse on time, duty cycle on MRR. Keeping pressure constant, Taguchi‟s orthogonal array L 9 has been effectively used to study the effect of independent process parameters. The results show PECM has enhanced MRR. The experimental results were analyzed using analysis of variance (ANOVA) method and by plotting various graphs. Keywords: ECM, PECM, Taguchi Method ANOVA, I. INTRODUCTION ECM process is generally used for machining complex shape and hard materials, ECM generates no burrs, no internal stress, has a long tool life, higher material removal rate and surface quality. Electrochemical machining (ECM) is a non-traditional process used mainly to cut hard or difficult to cut metals, and it is an anodic dissolution process based on the phenomenon of electrolysis, whose laws were established by Michael Faraday, where the application of a more traditional process is not convenient. ECM uses Electrical energy in combination with chemical reactions to remove material [1]. In traditional processes, the heat generated during the cut is dissipated to the tool, chip, workpiece and environment, affecting the surface integrity of the work-piece, mainly for those hard materials. Different from the other machining processes, in ECM there is no contact between tool and work-piece. Electrochemical (electrolyses) reactions are responsible for the chip removal mechanism [1]. In ECM, machining is done at low voltages compared to other processes with high metal removal rate; small dimensions can be controlled; hard conductive materials can be machined into complicated profiles; workpiece structure suffer no thermal damages; suitable for mass production work and low labor requirements[3,7].Predicting a minimum machining allowance or depth is essential for reducing waste generation. The uses of shorter pulse result in achieving a higher degree of localized dissolution. [3]. The stray removal in ECM adversely affects dimensional accuracy and surface quality of machined components [4].The current density and efficiency models for small gaps include the effects of polariastion voltage and the influence of electrolyte concentration and conductivity. The localisation effect at low electrolyte concentrations is utilised to achieve better dimensional control [11].