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2009
Conference Paper
Titel
Simulating the influence of the nozzle diameter on the shape of micro geometries generated with jet electrochemical machining
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.
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