Electrochemical Micromachining Using Electrostatic Induction Feeding Method

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This paper describes micro electrochemical machining (ECM) using the electrostatic induction feeding method. In ECM, electrolytic dissolution can be localized in the area where the gap width is narrow by using pulse durations shorter than several tens of nano-seconds. With the electrostatic induction feeding method which has been developed for micro electrical discharge machining, the current pulse of such short durations can be obtained more easily compared with the conventional pulse generators. In this study, the influences of the pulse voltage of power supply and feeding capacitance on the machining current were investigated theoretically. It was found that the current pulse duration is nearly equal to the rise time and fall time regardless of the pulse-on time of the pulse voltage. Hence, ultra-short pulses can be obtained without a need to use an expensive pulse generator. Micro-hole drilling carried out in a sodium nitrate aqueous solution with current pulse duration of 30ns showed that significantly small side gap of 2μm could be obtained.

Info:

Periodical:

Key Engineering Materials (Volumes 523-524)

Edited by:

Tojiro Aoyama, Hideki Aoyama, Atsushi Matsubara, Hayato Yoshioka and Libo Zhou

Pages:

305-309

Citation:

T. Koyano and M. Kunieda, "Electrochemical Micromachining Using Electrostatic Induction Feeding Method", Key Engineering Materials, Vols. 523-524, pp. 305-309, 2012

Online since:

November 2012

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Price:

$38.00

[1] R. Schuster, V. Kirchner, P. Allongue, G. Ertl, Electrochemical Micromachining, Science, 289, 5476 (2000) 98-101.

[2] M. Kunieda, A. Hayasaka, X. D. Yang, S. Sano, and I. Araie, Study on Nano EDM Using Capacity Coupled Pulse Generator, Annals of the CIRP, 56, 1 (2007) 213-216.

DOI: https://doi.org/10.1016/j.cirp.2007.05.051

[3] M. Kimori, M. Kunieda, Miniaturization of Micro EDM Using Electrostatic Induction Feeding Method, Journal of the Japan Society for Precision Engineering, 76, 10 (2010) 1151-1155 (in Japanese).

DOI: https://doi.org/10.2493/jjspe.76.1151

[4] Y. Yahagi, T. Koyano, M. Kunieda, X. D. Yang, High Spindle Speed Micro EDM Using Electrostatic Induction Feeding Method, Journal of the Japan Society for Precision Engineering, 77, 4 (2011) 394-399 (in Japanese).

DOI: https://doi.org/10.1016/j.procir.2012.04.028

[5] A. J. Bard, L R. Faulkner, Electrochemical Methods: Fundamentals and Applications, second ed., John Wiley and Sons, (2001).

[6] T. Masuzawa, M. Fujino, K. Kobayashi, T. Suzuki, N. Kinoshita, Wire Electro-Discharge Grinding for Micro Machining, Annals of the CIRP, 34, 1 (1985) 431-434.

DOI: https://doi.org/10.1016/s0007-8506(07)61805-8

[7] T. Sato, Denkai Kakou to Kagaku Kakou, Asakura publishing, 1970 (in Japanese).