Experimental Study on High Frequency Short Pulse Electrochemical Mechanical Finishing

Abstract:

The machining process produces surfaces that require some form of finishing operation to improve the surface quality. Aiming at the problem of effective finishing for rough surface, the two stages high frequency short pulse electrochemical mechanical finishing (PECMF) technology is proposed. The composition of test equipment and principles of constant pressure regulating in flat and curve surface finishing process are discussed respectively, and the electrochemical finishing device and a series of cathode tools are designed. Systematic process parameters experiment for superalloyGH188 is carried using Taguchi methodology, the technology rule of process parameters on surface roughness is analyzed and a set of optimized process parameters were obtained. The results have shown that the constant pressure PECMP technology can significantly improve the surface roughness to Ra0.2175μm. The interaction effect between electrochemical anodic solution and mechanical polishing is important for improving the surface roughness in high frequency short pulse electrochemical mechanical finishing process.

• Periodical: Applied Mechanics and Materials (Volumes 29-32)
• Pages: 669-674
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.29-32.669
• Online since: August 2010
• Authors: Yun Peng Zhang, Jian She Guo, Guang Biao Sun, An Zhou Zhang
• Keywords: Compound Cathode Tool, High Frequency Short Pulse, PECMF, Surface Roughness (SR)

References

[1] N. Ma, W.J. Xu, X.Y. Wang. Pulse electrochemical finishing: Modeling and experiment. Journal of Materials Processing Technology, Vol. 210(2010),P. 852-857.

DOI: 10.1016/j.jmatprotec.2010.01.016

[2] H.C. Hong P.S. Pa. Electro-polishing and electro brightening of holes using different feeding electrodes. Journal of Materials Processing Technology , Vol. 89-90(1999),P. 440-446.

DOI: 10.1016/s0924-0136(99)00020-5

[3] R.E. Phillips. What is electrochemical grinding and how does it work. Carbide Tool, Vol. 18 (1986), P. 12-14.

[4] T. Masuzawa, S. Sakai, Quick finishing of WEDM products by ECM using a mate-electrode. Ann. CIRP, Vol. 36 (1987),P. 123-126.

DOI: 10.1016/s0007-8506(07)62568-2

[5] K.P. Rajurkar, D. Zhu, J.A. McGeough, etal. New developments in electro-chemical machining. Ann. CIRP, Vol. 48 (1999),P. 567-579.

DOI: 10.1016/s0007-8506(07)63235-1

[6] C. Rosenkranz, M.M. Lohrengel, J.W. Schultze, The surface structure during pulsed ECM of iron in NaNO3. Electrochimica Acta, Vol. 50(2005), P. 2009-(2016).

DOI: 10.1016/j.electacta.2004.09.010

[7] X.S. Zhao, W.J. Li. Study on pulse electrochemical and mechanical polishing of valve box. Electromachining & Mould, 3(2003),P. 34-37. (in chinese).

[8] B. Bhattacharyya, M. Malapati, J. Munda. Experimental study on electrochemical micromachining. Journal of Materials Processing Technology, Vol. 169(2005),P. 485-492.

DOI: 10.1016/j.jmatprotec.2005.04.074

[9] R. Mahdavinejad, M. Hatami. On the application of electrochemical machining for inner surface polishing of gun barrel chamber. Journal of Materials Processing Technology, Vol. 202(2008),P. 307-315.

DOI: 10.1016/j.jmatprotec.2007.09.027