Effect of Ultrasonic Vibration of Tool on Electrical Discharge Machining of Sintered NdFeB Magnet

Abstract:

Sintered NdFeB magnet is widely used in many areas because of its excellent magnet. This paper studies the effect of ultrasonic vibration of tool on electrical discharge machining of it. Experiments were carried out on self-made equipment and material removal rate(MRR) against pulse-on time, MRR versus peak current and machined surface results with and without ultrasonic employment were analyzed. Results show that MRR of the ultrasonic assisted electro-discharge machining would be up to five times higher than MRR of the conventional EDM for small pulse durations and low discharge currents. The machined surface of US/EDM is finer than EDM because of less arcing and short circuit pulses. There are less cracks on the surface.

• Periodical: Key Engineering Materials (Volumes 407-408)
• Pages: 628-631
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.407-408.628
• Online since: February 2009
• Authors: Li Li, Zong Wei Niu, Guang Ming Yuan
• Keywords: Electro Discharge Machining (EDM), NdFeB Magnet, Ultrasonic Vibration

References

[1] S.A. A. ttanasio and R.M. Latanision: Materials Science and Engineering A, Vol. 198(1-2) (1995), p.25.

[2] I. Puertas and C.J. Luis: Materials Processing Technology, Vol. 143-144 (2003), p.521.

[3] Shervani-Tabar and Mohammad T.: International Journal of Advanced Manufacturing Technology, Vol. 32(2007), p.719.

[4] C.J. Luis, I. Puertas and G. Villa: Journal of Materials Processing Technology, Vol. 164-165 (2005), p.889.