STUDIES ON ELECTROLYTE EFFECT ON SS316 USING MULTICRITERIA DECISION METHODS

Authors

  • T. Mothilal Department of Mechanical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology Ramapuram, Chennai, Tamil Nadu, India Author
  • N. Rajan Department of Mechanical Engineering, Vinayaka Mission’s Kirupananda Variyar Engineering College, Salem, India Translator
  • M. Soundarrajan Department of Mechanical Engineering, Muthayammal Engineering College, Salem, India Author

Abstract

Electrochemical Machining (ECM) is an innovative non-traditional machining technology that is commonly used to machine hard and complicated materials with great precision. This study compares the performance of two electrolytes, sodium nitrate (NaNO₃) and dilute sulphuric acid (H₂SO₄), in the ECM of stainless steel (SS316). Experiments were designed with an L18 mixed orthogonal array to alter important process parameters such as electrolyte concentration, voltage, duty cycle, and frequency. The machining performance was assessed using material removal rate (MRR), overcut (OC), and conicity. The ideal parameter combination was determined using multi-criteria decision-making techniques, specifically CRITIC (Criteria Importance Through Intercriteria Correlation) and Simple Additive Weighting (SAW). The findings show that sulphuric acid electrolyte has a larger MRR, whereas sodium nitrate provides superior control over dimensional accuracy and surface properties. The best machining conditions were 0.2 M H₂SO₄ electrolyte concentration, 12 V, 80% duty cycle, and 90 Hz frequency.

References

Downloads

Published

2026-03-25

Issue

Vol. 1 No. 1 (2026): Journal of Synergetic Research and Technology

Section

Articles