The Experimental Analysis of Surface Characteristics of INCONEL-718 using Electrical Discharge Machining

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Short Title: Int. J. Mech. Eng. Robot. Res.
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Home > Articles > All Issues > 2012 > Volume 1, No. 3, October 2012 >

D Sudhakara1 , B Venkataramana Naik1, and B Sreenivasulu2

1.Department of Mechanical Engineering, Vignana Bharathi Institute of Technology, Proddatur 516361, YSR Kadapa (Dist.), Andhra Pradesh, India.
2.Department of Mechanical Engineering, Madanapalle Institute of Technology & Science, Madanapalle 517325, Chittor (Dist.), Andhra Pradesh, India.

Abstract—Electric Discharge Machining (EDM) provides an effective Manufacturing technique that enables the production of parts made of hard materials with complicated geometry that are difficult to produce by conventional machining processes. Its ability to control the process parameters to achieve the required dimensional accuracy and surface finish has placed this machining operation in a prominent position in industrial applications. This project reports on the experimental investigation of machining of Inconel-718 using EDM process. The parameters such as peak current, pulse on time, duty factor were chosen to study the machining characteristics. An electrolytic rectangular copper block of 12  8 mm was selected as a tool electrode. The output response was measured were Material remove rate, Avg. Surface Roughness, Hardness. The results are revealed that how material removal rate, surface roughness and hardness are influenced by peek current, duty factor and pulse-on time. The surface crack lengths are also identified.

Index Terms—Electric discharge machining, INCONEL-718, MRR, Surface roughness, Hardness

Cite: D Sudhakara, B Venkataramana Naik, and B Sreenivasulu, "The Experimental Analysis of Surface Characteristics of INCONEL-718 using Electrical Discharge Machining," International Journal of Mechanical Engineering and Robotics Research, Vol.1, No.3, pp. 371-388, October 2012.