Study of nonconductive Si3N4 ceramic machining ability by electrical discharge machining process by assisting electrode

Document Type : Original Article

Authors

1 Faculty of Engineering, Department of Material science, Imam Hossein University, Tehran, Iran

2 Department of Material science, Malayer University, Malayer, Iran

3 Advanced Materials and Nanotechnology Research Center, Imam Hossein University, Tehran, Iran

Abstract

Based on the review of the previous researches, more than 50% of the cost of ceramic parts is related to machining costs, about silicon nitride (Si3N4), which is one of the most important engineering ceramics, while up to 80% has been reported. This ceramic has a combination of desirable properties such as wear and corrosion resistance and high hardness. Due to the high tool wear in machining process, the use of traditional methods is not appropriate. The electrical discharging machining process is a method that can machined all conductive materials without regard to mechanical and metallurgical properties, but machining of non-conducting ceramics such as silicon nitride is not normally possible by electrical discharging machining process. Therefore, in this research, the assisted electrode method has been used to perform the electrical discharge machining of silicon nitride ceramics. After preparing ceramic samples, copper-carbon bilayer and single copper layer were coating on the Si3N4 and they were successfully machined. In order to further examine the machined surface, imaging was performed by SEM. The results show that an increase in material removal rate in two-layer coating compared to single-layer coating. Also, after finishing machining process, EDX analysis was performed from the surface of ceramic workpiece, which indicates the presence of carbon and copper elements in the machined surface. In addition, the copper tool wear ratio in two-layer coating is less than that of single-layer coating.

Keywords

References

[1] Sh. Sōmiya, F. Aldinger, N. Claussen, R. M. Spriggs, K. Uchino, K. Koumoto, M. Kaneno, Handbook of Advanced Ceramics: Materials, Applications, Processing, and Properties, Second Edition, pp. 20-60, New York: Academic Press, 2013.
[2] A. Bilal, M. Pervej Jahan, D. Talamona, A. Perveen, Electro-Discharge Machining of Ceramics: A Review, Micro machines, Vol. 10, No. 10, pp. 1-41, 2019.
[3] A. Schubert, H. Zeidler, R. Kühn, M. Hackert-Oschätzchen, Microelectrical Discharge Machining: A Suitable Process for Machining Ceramics, Journal of Ceramics, Vol. 2015, pp.1-9, 2015.
[4] D. Hanaoka, R. Ito, Y. Fukuzama, Electrical Discharge Machined Surface of the Insulating ZrO2 Ceramics, Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol. 5, No. 4, pp. 372-384, 2011.
[5] A. Sabur, M. Yeakub, Md. A. Maleque, A. A. Khan, Investigation of material removal characteristics in EDM of nonconductive ZrO2 ceramic, Procedia Engineering, Vol. 56, pp. 696 – 701, 2013.
[6] D. Hanaoka, Y. Fukuzawa, C. Ramirez, P. Miranzo, M. I. Osendi, M. Belmonte, Electrical discharge machining of ceramic/carbon nanostructure composites, Procedia CIRP, Vol. 6, pp. 95 – 100, 2013.
[7] Y. J. Lin, Y.-Ch. Lin, A-Ch. Wang, D. Wang, H.M. Chow, Machining characteristics of EDM for non-conductive ceramics using adherent copper foils, Advanced Materials Research, Vol. 154-155, pp. 794-805, 2011.
[8] M. Mahboubkhah, A. Ziae azar, Determination of the optimal grinding parameters of oxide ceramics through experimental tests, The First National Conference on Computational and Experimental Mechanics, Tehran, Iran, 28 February, 2019., (in Persian)
[9] M. Emami, M. Sdeghi, Study of the effect of lubricant type and tool (grinding wheel) material on the performance of minimum quantity lubrication in grinding of advanced ceramics, Modares Mechanical Engineering, Vol. 18, No. 02, pp. 281-292, 2018. (in Persian)
[10] M. Shabgard, H. Faraji, B. Khosrozade, H. Eivazi Bagheri, K. Amini, Study the Effects of Dielectric Type on the Machining Characteristics of γ-Ti Al in Electrical Discharge Machining, International Journal of Engineering Research in Africa, Vol. 33, pp. 40-49,2017.
[11] A. Muttamara, P. Janmanee, Y. Fukuzawa, A Study of Micro–EDM on Silicon Nitride Using Electrode Materials, International Transaction Journal of Engineering, Management, Applied Sciences & Technologies, pp. 1-7, 2010.
[12] F. Klocke, M. Oliviera, U. Degenhardtb, T. Herriga, U. Tombula, A. Klinka, Investigation on Wire-EDM Finishing of Titanium Nitride Doped Silicon Nitride in CH-based Dielectrics, Procedia CIRP, Vol. 77, pp. 650-653, 2018.
[13] B. Lauwers, W. Liu, J.P. Kruth, J. Vleugels, D. Jiang, O. Biest, Wire EDM machining of Si3N4, ZrO2 based ceramics, International Journal of Electrical Machining, No. 10, pp. 33-38, 2005.
[14] D. Rodic, M. Gostimirovic, M. Sekulic, B. Savkovic, B. Strbac, Investigation an assisting electrode powder mixed electrical discharge machining of nonconductive ceramic, The International Journal of Advanced Manufacturing Technology Vol. 118, pp. 2419-2435, 2022.
[15] M. Volosova, A. Okunkova, P. Peretyagin, Y. A. Melnik, N. Kapustina, On Electrical Discharge Machining of Non-Conductive Ceramics: A Review, Technologies,Vol. 7, pp.1-16, 2019.
Iranian Journal of Manufacturing Engineering
Volume 9, Issue 5
August 2022
Pages 13-22

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