Influence of EDM Characteristic Parameters on the Surface Microstructure in CK45 Alloy Steel

Document Type: Persian

Authors

1 M.Sc., Manufacturing Department, Islamic Azad University, Shiraz Branch.

2 Assistant Professor, Metallurgy Department, Islamic Azad University, Branch

3 Assistant Professor, Manufacturing Department, Islamic Azad University, Shiraz Branch

4 Assistant Professor, Mechanical Engineering Department, Ferdosi University.

Abstract

Electro Discharge Machining (EDM) is a very efficient machining process widely used in manufacturing components of complicated geometry. Based on its nature, i.e. material removal by electric discharge, the process induces thermal stresses that in turn result in generation of wide spread micro-cracks on the surface of the machined part. In this paper the influence of EDM characteristic parameters on the surface microstructure in CK45 alloy steel which is suitable for manufacturing of forging dies has been extensively investigated. An extensive experimental programme has been carried out to explore the role of various EDM parameters on the quality of the machined surface. The relation of EDM parameters has been evaluated quantitatively using the test results and regression analysis. Predicting the impact of EDM parameters on the surface quality as the outcome of this study provides means to appropriately decide on the adjustment of parameters to their optimum values and achieve the desired die surface quality at reasonable manufacturing time and cost.

Keywords

References

[1] McGeough J. A., Advanced Methods of Machining, First edition, Chapman and Hall, USA, 2000.

[2]  Kruth J. P., Stevens L., Froyen L. and Lauwers B., Study on the white layer of a surface machined by die sinking electro-discharge machining, Annals of the CIRP  Vol. 44 (1), 1995, pp. 169–172.

[3] Ekmekci B., Elkoca O., Tekkaya A. E. and Erden A., Observations on cracking behavior of micro alloy steel in electric discharge machiningEDM, 10th International Conference on Machine Design and Production, Cappadocia, Turkey, 2002.

[4]  Guu Y. H, AFM surface imaging of AISI D2 tool steel machined by the EDM process, Applied Surface Science, Vol 242(3-4), 2005, pp. 245–250.

[5]  Manoj Kumar B. V., Ramkumar J., Basu B. and Kang S., Electro-discharge machining performance of Ti CN-based cermets, Int. J. Refractory Metals & Hard Materials, Vol. 25 , 2007, pp. 293–299.

 [6] Bringas J. E, Handbook of comparative world steel standards, 2nd ed., (ASTM data series. DS 67A), USA, 2008.

 [7] Descoeudres A., Characterization of electrical discharge machining plasmas, PhD thesis, Mechanical and Mechatronic Engineering, University of  Lausanne, EPFL, 2006.

 

 

 

 

Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

Volume 1, Issue 4
Summer 2008
Pages 31-40

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