Electrical Discharge Machining (EDM) Phenomena of Insulating ZrO₂ Ceramics with Assisting Electrode

Abstract:

Advanced engineering ceramics are more and more widely employed in modern industries because of their excellent mechanical properties such as high hardness, high compressive strength, high chemical and abrasive resistance. These properties limited the machining to the insulated ceramics. This paper investigates the electrical discharge machining (EDM) of ZrO2-based ceramics by assisting electrode method. The theory of assisting electrode method is introduced. The machining phenomena under different electrical parameters were studied. The material removal mechanisms change with the increase in the power of single pulse. Some work-pieces have been machined successful through the assisting electrode method.

• Periodical: Key Engineering Materials (Volumes 375-376)
• Pages: 313-317
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.375-376.313
• Online since: March 2008
• Authors: Yong Feng Guo, Guan Qun Deng, Ji Cheng Bai, Ze Sheng Lu
• Keywords: Conductive Layer, Electro Discharge Machining (EDM), ZrO₂ Assisting Electrode

References

[1] T. Tani, Y. Fukuzawa, N. Mohri, N. Saito and M. Okada: Journal of Materials Processing Technology, Vol. 149 (2004), pp.124-128.

DOI: 10.1016/j.jmatprotec.2003.12.027

[2] N. Mohri, Y. Fukuzawa, T. Tani, N. Saito and K. Furutani: Annals of the CIRP, Vol. 45 (1996) No. 1, pp.201-204.

DOI: 10.1016/s0007-8506(07)63047-9

[3] Y. Fukuzawa, N. Mohri and T. Tani: International Journal of Electrical Machining, (1997) No. 2, pp.25-30.

[4] Y. Fukuzawa, T. Tani, N. Mohri and A. Muttamara: International Journal of Electrical Machining, (2003) No. 8, pp.57-61.

[5] J. Liu: Study of Insulating Ceramics-ZrO2 by EDM (M.S. Dissertation, Harbin Institute of Technology, China 2004).

[6] Y. Guo, J. Bai, G. Deng and Z. Lu: Process of Precision Engineering and Nano Technology, Key Engineering Materials Vol. 339 (2007), pp.281-285.