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A Study on Kerf Width of EN47 Steel in WEDM
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The current experimental work investigates the influence of various process variables during wire-cut elecro-discharge machining (WEDM) ofEN47 spring steel on width of kerf. Taguchi’s L27 orthogonal array design of experiment is used to determine experimental runs corresponding to three levels of each of four factors viz. pulse-on time, wire feed, pulse-off time and gap voltage. Optimal condition for minimising kerf width is tried to find out within the experimental range. Analysis of variance (ANOVA) is employed to evaluate the significant process variable and the interaction terms to control kerf width. Finally, validation test is conducted to justify importance of the selected design. Signal to noise ratio of kerf width at optimal condition has been improved by 7.58% over the initial condition. Gap voltage and pulse off time are found to be the most significant parameters while pulse-on time has only moderate influence. Optimal condition is 8ps pulse-on time, 10µ s pulse-off time, 6m/min wire feed and 150V gap voltage.
Keywords
EN47, Spring Steel, WEDM, Kerf Width, Taguchi Method.
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- Aggarwal, A., Singh, H., Kumar, P. and Singh, M., Optimizing feed and radial forces in CNC machining of P-20 tool steel through taguchi parameter design approach, Indian Journal of Engineering & Material Science, Vol. 16, pp. 23-32, 2009.
- Kumar, Y. and Singh, H., Application of Taguchi method for optimizing material removal rate in turning of En-47 spring steel, Proceedings of the 5thlnternational & 26th All India Manufacturing Technology, Design and Research (AIMTDR) Conference, NT Guwahati, India, 2014.
- Arun, K. V. and Swetha, K.V., Influence of material condition on the dry sliding wear behavior of spring steels, Journal of Minerals & Materials Characterization & Engineering, Vol. 10, No.4, pp. 323-337, 2011.
- Durairaj, M., Sudharsun, D. and Swamynathan, N., Analysis of process parameters in wire EDM with stainless steel using single objective Taguchi method and multi objective grey relational grade, Procedia Engineering, Vol. 64, pp. 868 - 877, 2013.
- Singh, H. and Garg, R., Effects of process parameters on material removal rate in WEDM, Journal of Achievements in Materials and Manufacturing Engineering, Vol.32, pp. 70-74, 2009.
- Ugrasen, G., Ravindra, H.V., Naveen Prakash, G.V. and Keshavamurthy, R., Process optimization and estimation of machining performances using artificial neural network in wire EDM, Procedia Materials Science, Vol. 6, pp. 1752-1760, 2014.
- Wang, W.M. and Rajurkar, K.P., Monitoring sparking frequency and predicting wire breakage in WEDM Sensors and Signal Processing for Manufacturing, American Society of Mechanical Engineers, Production Engineering Division, Vol. 55, pp.49-64,1992.
- Sharma, N., Khanna, R. and Gupta, R.D., Experimental investigation of WEDM process parameters in machining of Low carbon steel, Proceedings of the National Conference on Present Scenario and Advanced Technology in Mechanical Engineering, JMIT, Radaur, pp.126-131, 2011.
- Goswami, A. and Kumar, J., Optimization in wire-cut EDM of Nimonic-80A using Taguchi’s approach and utility concept, Engineering Science and Technology, an International Journal,Vol. 17, pp. 236-246, 2014.
- Tosun, N., Cogun, C. and Tosun, G., Astudy on kerf and material removal rate in wire electrical discharge machining based on Taguchi method, Journal of Materials Processing Technology, Vol. 152, pp. 316-322, 2004.
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