Volume 7, 2020
|Number of page(s)||10|
|Published online||24 April 2020|
Fabrication of array of micro circular impressions using different electrolytes by maskless electrochemical micromachining
Mechanical Engineering Department, Durgapur Institute of Advanced Technology and Management, Durgapur, India
2 Manufacturing Engineering Department, College of Engineering, Guindy, India
3 Production Engineering Department, Jadavpur University, Kolkata, India
* e-mail: email@example.com
Accepted: 17 March 2020
Maskless electrochemical micromachining (EMM) is a prominent technique for producing the array of micro circular impressions. A method for producing the array of micro circular impressions on stainless steel workpiece applying maskless electrochemical micromachining process is presented. The experimental setup consists of maskless EMM cell, electrode holding devices, electrical connections of electrodes and constricted vertical cross flow electrolyte system to carry out the experimental investigation. One non-conductive masked patterned tool can produce more than twenty six textured samples with high quality. A mathematical model is developed to estimate theoretically the radial overcut and machining depth of the generated array of micro circular impressions by this process and corroborate the experimental results. This study provides an elementary perceptive about maskless EMM process based on the effects of EMM process variables i.e. pulse frequency and duty ratio on surface characteristics including overcut and machining depth for NaCl, NaNO3 and NaNO3 + NaCl electrolytes. From the experimental investigation, it is observed that the combined effect of lower duty ratio and higher frequency generates the best array of micro circular impressions using the mixed electrolyte of NaNO3 + NaCl with mean radial overcut of 23.31 µm and mean machining depth of 14.1 µm.
Key words: Array of micro circular impressions / Maskless EMM / Electrolytes / Reused masked tool / Overcut / Machining depth
© S. Kunar et al., Published by EDP Sciences 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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