Preprint Article Version 1 This version is not peer-reviewed

Optimum Parameters for Electrochemical Micromachining of Stainless Steel

Version 1 : Received: 11 October 2018 / Approved: 12 October 2018 / Online: 12 October 2018 (05:31:35 CEST)

How to cite: Rodriguez, P.; Hidalgo, D.; Labarga, J.E. Optimum Parameters for Electrochemical Micromachining of Stainless Steel. Preprints 2018, 2018100258 (doi: 10.20944/preprints201810.0258.v1). Rodriguez, P.; Hidalgo, D.; Labarga, J.E. Optimum Parameters for Electrochemical Micromachining of Stainless Steel. Preprints 2018, 2018100258 (doi: 10.20944/preprints201810.0258.v1).

Abstract

In this work a research on pulsed electrochemical micromachining of Stainless Steel is presented. A suitable equipment to study the process is described as well as a fitting procedure to machine and measure the variables involved. A tool of Tungsten with a tip of about 5 mm diameter sunk in an electrolyte of NaNO3 is used for the process. The pulse on-time must be maintained in the order of ns to achieve a good current confinement, since the tool is active. Some experiments were made to assess the most important variables of the process, as current confinement, surface roughness, material removal rate and efficiency. It is observed that the current confinement get worse when the pulse on-time increases, as well as surface roughness. The material removal rate and the efficiency increase with the voltage amplitude and the pulse on-time. The voltage amplitude must be higher than 12 V so that the phenomenon of passivation disappears. There is a compromise in the choice of the variables, so a suitable combination of parameters is determined so that a good material removal rate with an acceptable result is achieved.

Subject Areas

pulsed electrochemical micromachining; current confinement; material removal rate; efficiency

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