Influence of Pulse Period and Duty Ratio on Electrochemical Micro Machining (EMM) Characteristics
International Journal of Mechanical Engineering and Applications
Volume 1, Issue 4, October 2013, Pages: 78-86
Received: Mar. 3, 2013; Published: Sep. 20, 2013
Views 3114      Downloads 178
Author
Malapati Manoj Kumar Reddy, Mechanical Engg. Unit, Department of Engineering, College of Applied Sciences Sohar (Ministry of Higher Education), Sultanate of Oman
Article Tools
PDF
Follow on us
Abstract
Electrochemical Micro Machining (EMM) appears to be promising as a future micro machining technique since in many areas of applications; it offers several advantages including electronic, biomedical and MEMS/NEMS applications. Electrochemical Machining (ECM) can be effectively used in the micron range by maintaining very smaller inter electrode gap with proper controlling of predominant micromachining parameters during machining. Present paper will highlight the influence of various EMM process parameters i.e. machining voltage, electrolyte concentration, pulse period and duty cycle ratio on machining performance criteria e.g. material removal rate and machining accuracy to meet the micro machining requirements. Some of the experiments had been carried out on copper to investigate the most effective zone, which gives high machining accuracy with appreciable amount of material removal rate and optimum machining speed. From the experimental results, it has been observed that the introduction of short pulse period improves EMM performance characteristics. Attempt has also been made to study and compare the surface condition of the machined micro holes through SEM micrographs. From the analysis of test results and SEM micrographs it can be observed that optimum value of machining voltage is about 3V, pulse period is about 200 μsec, duty cycle ratio is about 20% and electrolyte concentration is about 20 g/l which will produce accurate micro holes with highest possible amount of material removal.
Keywords
EMM, Short Pulse, Machining Speed, Unit Removal
To cite this article
Malapati Manoj Kumar Reddy, Influence of Pulse Period and Duty Ratio on Electrochemical Micro Machining (EMM) Characteristics, International Journal of Mechanical Engineering and Applications. Vol. 1, No. 4, 2013, pp. 78-86. doi: 10.11648/j.ijmea.20130104.11
References
[1]
Ahn.S.H, Ryu.S.H, Choi.D.K, Chu.C.N, (2004), Electro-chemical micro drilling using ultra short pulses, Precision Engineering, 28 (2) 129-134.
[2]
Bhattacharyya.B, Munda.J, Malapati.M, (2004), Advancement in electrochemical micromachining, Int. J. of Machine Tools & Manufacture, 44 1577 – 1589.
[3]
Bhattacharyya.B, Malapati.M, Munda.J, (2005), Experimental study on electrochemical micromachining, Journal of Materials Processing Technology 169 485-492.
[4]
Bhattacharyya.B, Mitra.S, Boro.A.K, (2002), Electrochemical machining: new possibilities for micro machining, Robotics and Computer Integrated Manufacturing, 18 283-289.
[5]
Chauvy.P.F, Hoffmann.P and Landolt.D, (2003), Applications of laser lithography on oxide film to titanium micro machining, Applied Surface Science 208-209 165-170.
[6]
Kozak.J, Rajurkar.K.P, Makkar.Y, (2004), Selected problems of micro-electrochemical machining, Journal of Materials Processing Technology, 149 (1-3) 426-431.
[7]
Landolt.D, Chauvy.P.F, Zinger.O, (2003), Electrochemical micromachining, polishing and surface structuring of metals: fundamental aspects and new developments, Electrochimica Acta 48 3185-3201.
[8]
Masuzawa.T, State of the art of micromachining, (2000), Annals of the CIRP, 49 (2) 473-487.
[9]
Masuzawa.T, Tonshoff.H.K, (1997), Three-dimensional micro machining by machine tools, Annals of the CIRP, 46 (2) 621-628.
[10]
Rajurkar.K.P, Zhu.D, McGough.J.A, Kozak.J, De Silva.A, (1999), New developments in electrochemical machining, Annals of CIRP, 48 (2) 567-578.
[11]
McGeough.J.A, (1974), Principles of electrochemical machining, Chapman and Hall London.
ADDRESS
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
U.S.A.
Tel: (001)347-983-5186