Study on the dynamic generation of the jet shape in Jet Electrochemical Machining
Study on the dynamic generation of the jet shape in Jet Electrochemical Machining
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DOI：
10.1016/j.jmatprotec.2015.03.049
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发表时间：
2015-09-01
影响因子：
6.3
通讯作者：
Schubert, Andreas
中科院分区：
文献类型：
--
作者：
Hackert-Oschaetzchen, Matthias;Paul, Raphael;Schubert, Andreas
喷射电解加工（Jet-ECM）是一种在金属零件中快速创建微结构的技术，没有任何热或机械冲击，并且与材料的硬度无关。加工表面非常光滑，不会发生刀具磨损。射流电解加工过程强烈依赖于射流的形状，而射流的形状是难以预测的。在之前的研究中，Hackert（2010）基于预定义的射流形状，使用COMSOL Multiphysics构建了一个数值模型。在本研究中，建立了一个新的模型，结合流体动力学水平集方法的两相流。根据射流电解加工过程，将仿真分为两个步骤。在第一步骤中，形成射流。在第二步中，通过使几何形状变形来模拟阳极溶解。模拟了溶解过程中电解液射流的动态行为。因此，影响加工结果的效果变得明显。本研究的结果导致通过电解自由射流的电化学加工更好地理解。尤其是可以证明喷嘴通过从工件反射的电解质的二次电接触。(C)2015 Elsevier B. V.版权所有。
Jet Electrochemical Machining (Jet-ECM) is a technology for fast creating microstructures into metallic parts without any thermal or mechanical impact and independent from the material's hardness. The processed surface is very smooth and no tool wear occurs. The Jet-ECM process depends strongly on the shape of the jet which is hardly predictable. In a previous study Hackert (2010) built a numerical model with COMSOL Multiphysics based on a predefined jet shape. In the present study a new model was created integrating fluid dynamics using the level set method for two-phase flow. According to the Jet-ECM process the simulation was divided into two steps. In the first step the jet is formed. In the second step the anodic dissolution is simulated by deforming the geometry. The dynamic behavior of the electrolyte jet could be simulated during the dissolution process. So effects became visible which affect the machining results. The results of the present study lead to a better understanding of electrochemical machining via electrolytic free jet. Especially a secondary electric contacting of the nozzle by electrolyte reflected from the work piece could be proven. (C) 2015 Elsevier B.V. All rights reserved.