Technological and Economical Capabilities of Manufacturing Titanium- and Nickel-Based Alloys via Electrochemical Machining (ECM)

Abstract:

In this paper technological and economical capabilities of manufacturing titanium- and nickel-based alloys via unpulsed Electrochemical Machining (ECM) are presented. A standardized test to receive typical workpiece material removal properties according to its electrochemical machinability is introduced. First of all the experimental setup of this test is described in detail. The test results for the materials Ti-6Al-4V and Inconel 718 are presented and discussed. Here the feed rate – current density- and surface roughness – current density curves are in focus. With help of these two functions as an example out of many possible applications the capability of blisk manufacturing by electrochemical machining is quantified. Therefore the theoretical machining times for both materials of substituted blisk geometry are calculated. Finally on this basis an economical comparison between ECM and milling as rough estimation is executed.

• Periodical: Key Engineering Materials (Volumes 504-506)
• Pages: 1237-1242
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.504-506.1237
• Online since: February 2012
• Authors: Fritz Klocke, Markus Zeis, Andreas Klink
• Keywords: Electrochemical Machining (ECM), Feed Rate - Current Density Curve, Frontal Gap - Current Density Curve, Inconel 718, Standardized Test, Surface Roughness - Current Density Curve, Ti6Al4V

References

[1] K. P. Rajurkar, D. Zhu, J. A. McGeough, J. Kozak, A. De Silva, New Developments in Electro-Chemical Machining, CIRP Annals - Manufacturing Technology, Volume 48, Issue 2, 1999, pp.567-579.

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

[2] K. P. Rajurkar, G. Levy, A. Malshe, M. M. Sundaram, A. McGeough, X. Hu, R. Resnick, A. De Silva, Micro and Nano Machining by Electro-Physical and Chemical Processes, CIRP Annals - Manufacturing Technology, Volume 55, Issue 2, 2006, pp.643-666.

DOI: 10.1016/j.cirp.2006.10.002

[3] H. Degenhardt, Elektrochemische Senkbarkeit metallischer Werkstoffe, PhD Thesis, RWTH Aachen, 1972.

[4] R. van Tijum, T. Pajak, The Multiphysics Approach: The Electrochemical Machining Process, COMSOL Conference, Hannover, 2008.

[5] K. J. Vetter, Elektrochemische Kinetik, Springer-Verlag, Berlin, Göttingen, Heidelberg, 1961.

[6] F. Klocke, W. König, Fertigungsverfahren 3, Springer-Verlag, Berlin, Heidelberg, New York, 2007.

[7] G. Lebküchner, Bearbeitungsstrategien als Grundlage für HPC, 3. Aachener High Performance Cutting (HPC) Konferenz, Aachen, 22.-23. Juni 2010.