Enhancement of Surface Crack Density Produced by EDM Using Hybrid Machining | ||
Engineering and Technology Journal | ||
Article 11, Volume 37, 12A, December 2019, Pages 566-573 PDF (1022.33 K) | ||
Document Type: Research Paper | ||
DOI: 10.30684/etj.37.12A.11 | ||
Authors | ||
Saad K. Shather1; Shukry H. Aghdeab2; Waqass S. Khudier2 | ||
1Production Engineering and Metalluragy - Iraq | ||
2Production Engineering and Metalluragy - Iraq | ||
Abstract | ||
The present work is aimed to improve the surface cracks density of electrical discharge machining (EDM) by Electrical Discharge Machining (EDM)/Electrochemical Machining (ECM) EDM/ECM hybrid process. A hybrid method of EDM-ECM combined processing involve EDM shaping as well as electrochemical machining (ECM) finishing, also, they are conducted in sequence one same machine tool, same electrode, yet on the different dielectric. In this study, the used workpiece material is the A2-Tool Steel material, while the electrode material is copper. The influence of controllable parameters could be identified via response surface methodology (RSM), these controllable effects include: pulse current, pulse on time, pulse off time, gap, voltage, and electrolyte concentration on surface cracks density (SCD). It has been noticed that model has been developed by RSM adequacy is acceptable because the coefficient of determination is closest to one for SCD, whereas the optimal solution achieved by Desirability Function Analysis (DFA) are (current =42 A, pulse-on time =100 , and pulse-off time =50 )in addition to that, the generated surface doesn’t have any crack which has been generated via EDM are removed entirely through ECM finishing. | ||
Keywords | ||
Hybrid Machining (EDM/ECM); Surface Cracks Density; Response Surface Methodology | ||
References | ||
[1] M. Dang, M. Rahman, and Y. S. Wong, International Journal of Machine Tools & Manufacture Simultaneous micro-EDM and micro-ECM in lowresistivity deionized water, vol. 54–55, pp. 55–65, 2012. [2] Hassan Abdel Gawad El-Hofy, Advanced Machining Processes; Non -Traditional and Hybrid Machining Processes, first edition, published by McGraw-Hill Companies, 2005. [3] K. Morankar and R. Shelke, „Optimization of Electrical Discharge Machining Process Parameters using JIS S CM420 low alloy steel by Response Surface Methodology‟, International Journal of Research in Engineering & Advanced Technology,” Vol. 5, No. 1, pp. 58–63, 2017. [4] V. Babu, J. S. Soni, and M. L. Rao, "Analysis and evaluation of heat affected zones ( HAZ ) of the workpiece surface machined using different electrode by Die-sinking EDM of EN-31 die steel", International Journal Of Engineering And Science (IJES),Vol.05,No.3, pp. 37– 42, 2016. [5] M. K. Pradhan,„Estimating the effect of process parameters on surface integrity of EDM ed AISI D2 tool steel by response surface methodology coupled with grey relational analysis‟,International Journal of Advanced Manufacturing Technology, Vol.67 pp. 2051–2062, 2013. [6] M. Boujelbene, E. Bayraktar, W. Tebni, and S. Ben Salem, „Influence of machining parameters on the surface integrity in electrical discharge machining‟, International Scientific Journal published by the World Academy of Materials and Manufacturing Engineering, Vol. 37, No. 2, pp. 110–116, 2009. [7] G. K. Mohana Rao, S. Satyanarayana, and M Praveen,„Influence of Machining Parameters on Electric Discharge Machining of Maraging Steels – An Experimental Investigation‟, Proceedings of the World Congress on Engineering, vol. II, pp.1-6, 2008. [8] B. Bhattacharyya, S. Gangopadhyay, and B. R. Sarkar,„Modelling and analysis of EDM ED job surface integrity‟, Journal of Materials Processing Technology, Vol. 189, pp. 169–177, 2007. [9] J. Jeykrishnan, B. V. Ramnath, C. Elanchezhian, and S. Akilesh, „Parametric analysis on Electrochemical machining of SKD-12 tool steel‟, 5th International Conference of Materials Processing and Characterization, Vol. 4, No. 2, pp. 3760–3766, 2017. [10] M. Zohoor, S. Jalili, A. Alipour, and R. Mosallanejad, “„Effect of Electrolyte Type on Electrochemical Machining of 304 Steel‟, International Journal of Advances in Engineering Research (IJAER),” No. 12, pp. 20–39, 2016. [11] S. H. Surekar and S. G. Bhatwadekar, „Optimization of Parameters in Electrochemical Machining of Ni-Base Superalloy‟, International Journal of Research in Aeronautical and Mechanical Engineering, Vol. 4, No. 1, pp. 72–80, 2016. | ||
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