Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

Optimization of Process Parameters for AISI 4340 Steel in Electrical Discharge Machining

AISI 4340강의 방전가공에서 공정변수의 최적화

  • Choi, Man Sung (School of Mechatronics Engineering, Korea University of Technology and Education)
  • 최만성 (한국기술교육대학교 메카트로닉스공학부)
  • Received : 2019.05.31
  • Accepted : 2019.06.18
  • Published : 2019.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The method of electrical discharge machining (EDM), one of the processing methods based on non-traditional manufacturing procedures, is gaining increased popularity, since it does not require cutting tools and allows machining involving hard, brittle, thin and complex geometry. This present investigation details the determination of optimum process parameter to attain the better machining performance in EDM of AISI 4340 steel with graphite as a tool electrode. The experimental combinations are planned and analyzed by Taguchi's design of experiments approach. To predict the optimal condition, the experiments are conducted by using Taguchi's L27 orthogonal array. The influence of process variables such as discharge current, pulse on and pulse off time, voltage and spark speed were investigated to control the various desired performance measures such as surface roughness. Analysis of Variance (ANOVA) has to be performed to know the magnitude of each factor. Investigations indicate that the surface roughness is strongly depend on pulsed current.

Keywords

References

  1. Choi, Man Sung, "Optimizing the Process Parameters of EDM on SCM440 Steel," Journal of the Semiconductor & Display Technology, Vol. 17, No. 2, pp61-66, June 2018.
  2. Shasikant, V., Roy, A. K., "Effect and Optimization of Machine Process Parameters on MRR for EN19 and EN41 Materials using Taguchi Method," Procedia Technology, Vol. 14, pp. 204-210, 2014. https://doi.org/10.1016/j.protcy.2014.08.027
  3. Roy, A. K., Kaushik Kumar, "Effect and Optimization of various Machine Process Parameters on the Surface Roughness in EDM for an EN41 Material using Grey Taguchi," Procedia Materials Science, Vol. 6, pp. 383-390, 2014. https://doi.org/10.1016/j.mspro.2014.07.049
  4. Jahan, M. P., Yang, Y. S., Rahman, M., "A Study on the Fine-finish De-sinking micro-EDM of Tungsten Carbide using Different Electrode Materials," Journal of Materials Processing and Technology, Vol. 209, pp. 3956-3957, 2009. https://doi.org/10.1016/j.jmatprotec.2008.09.015
  5. Kuppan, P., Rajadurai, A., Narayanan, S., "Influence of EDM Process Parameters in Deep Hole Drilling of Inconel 718," International of Journal of Advanced Manufacturing Technology, Vol. 38, pp. 74-84, 2008. https://doi.org/10.1007/s00170-007-1084-y
  6. Kanagarajan, D., Palanikumar, R., Davim K., Paulo J., "Optimization of Electrical Discharge Machining Charac -teristics of WC/Co Composites using Nondominated Sorting Genetic Algorithm (NSGA-II)," International of Journal of Advanced Manufacturing Technology, Vol. 38, pp. 74-84, 2008. https://doi.org/10.1007/s00170-007-1084-y
  7. Khan, L. P., Bhivsane, S. V., "Experimental Analysis and Investigation of Machining Parameters in Finish Hard Turning of AISI 4340 Steel," Procedia Manufacturing, Vol. 20, pp. 265-270, 2018. https://doi.org/10.1016/j.promfg.2018.02.039
  8. Sahoo, K. A., Sahoo, B., "Experimental Investigations on Machinability Aspects in Finish Hard Turning of AISI 4340 Steel using Uncoated and Multilayer Coated Carbide Inserts," Measurement, Vol. 45, pp. 2153-2165, 2012. https://doi.org/10.1016/j.measurement.2012.05.015
  9. Khare, K. S., Agarwal, S., "Optimization of Machining Parameters in Turning of AISI 4340 Steel under Cryogenic Condition Using Taguchi Technique," Procedia CIRP, Vol. 63, pp. 610-614, 2017. https://doi.org/10.1016/j.procir.2017.03.166
  10. Khare, K. S., Singh, N., "Optimizing the EDM Parameters to Improve the Surface Roughness of Titanium Alloy(Ti-6AL-4V)," International Journal of Emerging Science and Engineering, Vol. 1, pp. 2319-6378, 2013.
  11. Kumar, S., Singh, D., Kalsi, S. N., "Analysis of Surface Roughness during Machining of Hardened AISI 4340 Steel using Minimum Quantity Llubrication," Materials Today ; Proceedings Vol. 4, pp. 3627-3635, 2017.
  12. Khare, K. S., Agarwalb, S., Srivastavaa, S., "Analysis of Surface Roughness during Turning Operation by Taguchi Method," Materials Today ; Proceedings, Vol. 5, pp. 28089-28097, 2018.
  13. Choi, Man Sung, "A Study on Surface Roughness in Wire Electrical Discharge Machining of STD11 based on Taguchi method," Journal of the Semiconductor & Display Technology, Vol. 13, No. 3, pp.7-12, 2014.
  14. Choi, Man Sung, "Effect of Process Parameters on Surface Roughness in Lapping Operation," Journal of the Semiconductor & Display Technology, Vol. 12, No. 4, pp.9-13, 2013.