Microstructuring of carbide metals applying Jet Electrochemical Machining
Microstructuring of carbide metals applying Jet Electrochemical Machining
复制标题
DOI：
10.1016/j.precisioneng.2013.01.007
复制
发表时间：
2013-07-01
影响因子：
3.6
通讯作者：
Schubert, Andreas
中科院分区：
文献类型：
--
作者：
Hackert-Oschaetzchen, Matthias;Martin, Andre;Schubert, Andreas
电化学加工是一种很有潜力的高精度微细加工工艺。尤其是加工无任何热或机械冲击的零件是一个重要的特点。此外，工件材料的电化学溶解行为仅由其电化学属性定义。因此，材料的硬度和延性等力学特性不受影响。这使得电解加工成为机械难加工材料的一种替代工艺。在这项研究中，研究了一种加工碳化物金属合金微观几何形状的特殊工艺，其中应用了连续自由电解射流(Jet Electronics Maching-Jet-ECM)。该技术的特点是射流将电流限制在一个有限的区域内，导致去除的局部化程度很高。即使是复杂的结构，也可以在连续直流电的帮助下加工。因此，与脉冲电化学法相比，可以获得更高的溶解速率。在实验中，对碳化钨合金中的阶梯孔和沟槽进行了加工。因此，在没有喷嘴运动的情况下进行点冲刷，以及通过刀具的单轴和多轴运动进行线冲刷。此外，通过重叠的线性侵蚀，展示了所研究材料的三维成形。(C)2013 Elsevier Inc.保留所有权利。
Electrochemical machining (ECM) is a potential procedure for high precision micromanufacturing. Especially the machining of work pieces without any thermal or mechanical impact is a significant feature. Additionally, the electrochemical dissolution behavior of the work piece material is only defined by its electrochemical attributes. Hence, mechanical characteristics such as the material's hardness and the ductility have no influence. This makes ECM an alternative process for mechanically hard to machine materials.In this study, a special procedure for machining microgeometries in carbide metal alloys is investigated, whereat a continuous electrolytic free jet (Jet Electrochemical Machining - Jet-ECM) is applied. The special characteristic of this technology is the restriction of the electric current to a confined area by the jet, which leads to a high localization of the removals. Even complex structures can be machined by the help of continuous direct current. Hence, higher dissolution rates compared to pulsed electrochemical processes can be achieved.In the experiments the machining of step holes and grooves in tungsten carbide alloys is performed. Therefore, point erosions without nozzle movement and linear erosions by single- and multi-axis motions of the tool are conducted. In addition, three-dimensional shaping of the investigated materials is presented by overlapping linear erosions. (C) 2013 Elsevier Inc. All rights reserved.