Analysis of the fundamental removal geometry in electrochemical profile turning with continuous electrolytic free jet
Analysis of the fundamental removal geometry in electrochemical profile turning with continuous electrolytic free jet
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DOI：
10.1016/j.procir.2017.12.085
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
André Martin;M. Hackert-Oschätzchen;N. Lehnert;A. Schubert
中科院分区：
文献类型：
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作者：
André Martin;M. Hackert-Oschätzchen;N. Lehnert;A. Schubert
应用连续电解自由射流的电解加工（Jet-ECM）是一种潜在的、非传统的导电工件微细加工技术。电流密度的分布被电解质射流限制在一个有限的区域，因此，可以实现高度局部化的去除几何形状。此外，还可以实现非常高的电流密度，从而获得高的表面质量。平面工件表面的喷射-EC加工已在之前的几项工作中提出。在这项研究中，实验分析的基本去除几何在射流-EC轮廓车削进行。工件的材料、喷嘴和工件表面之间的相对运动速度、工作间隙以及电解液的类型和电导率根据先前对加工平面的分析来选择，以允许可比性。旋转速度保持恒定在6.37 / min的值，其表示喷嘴和工件表面之间的1 mm/s的相对运动速度。实验中电解液喷嘴不作绝对运动，工作间隙为100 μm。将盐分数为30%的NaNO 3水溶液用作电解液。将电势从10 V增加到60 V以确定对所得去除几何形状的影响。通过Jet-EC轮廓车削在旋转对称试样上实现周向凹槽。将基本的去除几何形状与平面工件的喷射电解加工的结果进行比较。它将被示出，由于对电流密度的影响，所施加的电压显著地影响槽的宽度和深度。
Electrochemical machining applying a continuous electrolytic free jet (Jet-ECM) is a potential, non-conventional technique for micro-machining of electrically conductive work-pieces. The distribution of the current density is restricted to a confined area by the electrolyte jet, hence, highly localized removal geometries can be realized. In addition, very high current densities are possible, which lead to high surface qualities.Jet-EC machining of plane work-piece surfaces has been presented in several previous works. In this study, experimental analyses on the fundamental removal geometries in Jet-EC profile turning are carried out. The material of the work piece, the relative motion speed between the nozzle and the work piece surface, the working gap as well as the type and the electric conductivity of the electrolytic solution were chosen according to previous analyses on machining plane surfaces to allow for comparability.Thus, a work piece of 1.4301 stainless steel with a diameter of 3 mm was used. The rotational speed was kept constant at a value of 6.37 / min, which represents a relative motion speed of 1 mm/s between the nozzle and the work piece surface. The experiments were carried without absolute movement of the electrolyte nozzle at a constant working gap of 100 μm. An aqueous solution of NaNO3with a salt fraction of 30% was applied as electrolytic liquid. The electric potential was increased from 10 V to 60 V in order to determine the influence on the resulting removal geometry.Circumferential grooves were realized by Jet-EC profile turning on the rotation-symmetric specimen. The fundamental removal geometry will be compared to the results in Jet-ECM of plane work-pieces. It will be shown, that the applied voltage significantly influences the width and the depth of the grooves due to the influence on the current density.