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Simulating the influence of the nozzle diameter on the shape of micro geometries generated with jet electrochemical machining

 
: Schubert, A.; Hackert, M.; Meichsner, G.

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Fulltext urn:nbn:de:0011-n-1161319 (2.1 MByte PDF)
MD5 Fingerprint: fab4650cc8921f13107826f0ff41c7a1
Created on: 8.4.2011


Multiphysics Modeling and Simulation. 3rd European COMSOL Conference 2009. CD-ROM : October 14-16, 2009, Milano
Milano, 2009
ISBN: 978-0-9825697-2-6
4 pp.
European COMSOL Conference <3, 2009, Milano>
English
Conference Paper, Electronic Publication
Fraunhofer IWU ()
Jet Electrochemical Machining; localized anodic dissolution; mesh displacement; closed electrolytic free jet; electrochemical micromachining

Abstract
Jet Electrochemical Machining (Jet-ECM) is an unconventional procedure for micromachining [1, 2, 3]. Based on localized anodic dissolution three-dimensional geome tries [4] and microstructured surfaces [5] can be manufactured using Jet-ECM. COMSOL Multiphysics is used at Chemnitz UT to simulate the electric current density in the jet and the dissolution process [6]. Using transient pseudo 3-D models, the dissolution process of Jet-ECM point machining is simulated. A mesh displacement dependent on the normal current density implements Faraday's law in the model to simulate the profile shape. In this study the inuence of the nozzle diameter is investigated. All simulation parameters like electric potential, electric conductivity, specific dissolution volume and current efficiency were taken from own experiments. The results demonstrate that the simulated diameter of Jet-ECM point erosion is a linear function of the nozzle diameter. The function can perspectively be used for interpolation and extrapolation of the Jet-ECM erosion width. The comparison of simulated and measured point erosion profiles demonstrate a good coincidence.

: http://publica.fraunhofer.de/documents/N-116131.html