Study of Electrode Surface Characteristics under Short Single Pulse in Micro Ed-Milling

Abstract:

Laminated removal micro ED-Milling is a non-contact special processing technology, through electrode discharge removal in materials. Therefore, shape, size and overlapping degree of the discharge crater determine the surface roughness and surface morphology. Using the principle of electrode wears, through the experiment of Micro-EDM milling shallow groove under short single pulse, getting morphology of a single pulse discharge machining surface. And from the crater of morphological features analyses the different cause of formation, and contrasts in different electric parameters, the different of the electrode surface. For further analysis of the surface physical and mechanical performance changes to lay the foundation, and provides a way for the electrode material removal mechanism research and the calculation of the Single pulse discharge energy.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 1057-1061
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.1057
• Online since: September 2013
• Authors: Liao Yuan Zhang, Di Yu, Zhong Qing Shao, Shuo Wang, Zhong Xiu Lv
• Keywords: Discharge Crater, Electrical Discharge Machining (EDM), Surface Topography

References

[1] Katz Z, Tibbles C J. Analysis of micro-scale EDM process. Int J Manuf Technol, (2004).

[2] Liu J.C., Zhao J.Q., Special ProcessingBeijing: mechanical industry press, (1999).

[3] Y.H. Guu, Max Ti-Kuang Hou. Effect of machining parameters on surface textures in EDM of Fe-Mn-Al alloy. In: Materials Science and Engineering A 2007, 466: 61~67.

DOI: 10.1016/j.msea.2007.02.035

[4] H. T. Lee, T. Y. Tai, J. Mater. Relationship between EDM parameters and surface crack formation. In: Journal of Materrials Processing Technology, 2003, 142: 676~683.

DOI: 10.1016/s0924-0136(03)00688-5

[5] Cui J.Z., Wang Z.L., Study on the mechanism of electrode material erosion in EDM process, Electromachining and Mould, 2006, 6: 6~9.

[6] Yan-Cherng Lin, Lih-Ren Hwang, Chao-Hsu Cheng, Pao-Lin Su. Effects of electrical discharge energy on machining performance and bending strength of cemented tungsten carbides. Journal of Materials Processing Technology 2008, 206: 491-499.

DOI: 10.1016/j.jmatprotec.2007.12.056

[7] Jing S.J., Inoue clean. Discharge machining principle - mold processing technology , Beijing: National defence industry press, (1999).

[8] Yuan L.W., LouL.M., Volatility and EDM of the plasma channel , Journal of Shanghai Jiao Tong University, 2001, 35(7): 989~997.