Paper Titles
Optimizing Electrochemical Buffing Control Parameters for Surface Finishing of Ultrahigh Purity Components
p.109
Processing Flow of Optical Fabrication for Correcting Lenses
p.117
Studies on Disfigurement-Fee Technology of Drilling Carbon Fiber Reinforced Plastics
p.125
Study on the Characteristics of Simply Mixed the Magnetic Abrasives Particles
p.133
EDM with USM Combination Process of Sintered NdFeB Permanent Magnet
p.139
A New Method of Reducing Shock between Press Head and Press Disk in High Speed Lapping
p.145
Study on Building and Simulation of the Polishing Path of Mold Based on MasterCAM
p.149
Study on Effect of Composite Particles in Polishing Process and Its Mechanism
p.155
Study on Contact Pressure between Grain and Workpiece during Floating Polishing
p.161

EDM with USM Combination Process of Sintered NdFeB Permanent Magnet

Article Preview

Abstract:

Sintered NdFeB permanent magnet is widely used because of its excellent magnet property. But there is few report of machinbility of it. This paper presents an experimental investigation of the machining characteristics of sintered NdFeB permanent magnet using a combination process of electro-discharge machining (EDM) with ultrasonic machining (USM). The EDM / USM machining mechanisms are integrated to improve the machining efficiency. During the experiments, concentration of abrasive in the dielectric fluid is changed to explore its effect on the material removal rate (MRR). MRR of EDM /USM, conventional EDM and tool vibration aided EDM are compared, REWR and machined surface characteristics are also compared between them. From the experimental results, it is concluded that the combination EDM/USM process can increase the MRR and decrease the thickness of the recast layer. In the combination process, an appropriate abrasive concentration can improve its machining efficiency.

You might also be interested in these eBooks
Precision Surface Finishing and Deburring Technology View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 24-25)

Pages:

139-143

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.24-25.139

Citation:

Cite this paper

Online since:

September 2007

Authors:

Li Li, Dong Wang, Zong Wei Niu, Zhi Yong Li

Keywords:

Electro Discharge Machining (EDM), Material Removal Rate (MRR), Recast Layer, Ultrasonic Machining

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] S.A. A. ttanasio, R.M. Latanision, Corrosion of rapidly solidified neodymium-iron-boron (Nd-Fe-B) permanent magnets and protection via sacrificial zina coatings, Materials Science and Engineering A, Vol. 198 (1-2) (1995), p.25.

DOI: 10.1016/0921-5093(95)80055-y

Google Scholar

[2] I. Puertas, C.J. Luis, A study on the machining parameters optimization of electrical discharge machining, Journal of Materials Processing Technology, Vol. 143-144 (2003), p.521.

DOI: 10.1016/s0924-0136(03)00392-3

Google Scholar

[3] C.J. Luis, I. Puertas, G. Villa, Material removal rate and electrode wear study on the EDM of silicon carbide, Journal of Materials Processing Technology, Vol. 164-165 (2005), p.889.

DOI: 10.1016/j.jmatprotec.2005.02.045

Google Scholar

[4] W.S. Zhao, Z.L. Wang, S.C. Di, G.X. Chi, H.Y. Wei, Ultrasonic and electrical discharge machining to deep and small hole on titanium alloy, Journal of Materials Processing Technology, Vol. 20 (2002), p.101.

Google Scholar

[5] J.H. Zhang, H. Zhang, D.S. Su, Y. Qin, M.Y. Huo, Q.H. Zhang, L. wang, Adaptive fuzzy control system of a servomechanism for electro-discharge machining combined with ultrasonic vibration, Journal of Materials Processing Technology, Vol. 129 (2002).

DOI: 10.1016/s0924-0136(02)00573-3

Google Scholar

[6] H.H. Man, H.C. Man, L.K. Leung, Corrosion protection of NdFeB magnets by surface coatings-Part I: Salt spray test. Journal of Magnetism and Magnetic Materials, Vol. 152 (1-2) (1996), p.40.

DOI: 10.1016/0304-8853(95)00453-x

Google Scholar