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Effect Of Electrode Material On Cut Qualities Of Shape Memory Alloy During Wedm: A Comparative Study

Author

Listed:
  • HIMADRI MAJUMDER

    (Department of Mechanical Engineering, G. H. Raisoni College of Engineering and Management-412207, Maharashtra, India)

  • KALIPADA MAITY

    (#x2020;Department of Mechanical Engineering, National Institute of Technology, Rourkela-769008, Odisha, India)

Abstract

This paper compares some of the vigorous machinability characteristics of SMA-Nitinol during WEDM process using uncoated and zinc coated brass wire electrodes. A series of experiments were regulated based on Taguchi’s L27 orthogonal array with an objective of unveiling the benefits of using coated brass wire electrodes in comparison to uncoated counterparts. Five factors, namely pulse-on time (TON), discharge current (I), wire tension (WT), wire speed (WS) and flushing pressure (FP), were considered, each at three different levels to scrutinize four responses, viz. surface roughness (Ra), kerf width (KW), machining time (MT) and micro-hardness (μh). It was perceived that zinc-coated brass wire was more preferable to get favorable responses like Ra, KW and μh when compared with brass wire counterparts. FESEM micrographs also revealed that micro and large cracks, wide craters, recast layer were more prominent on the WEDMed surface of brass wire compared to zinc-coated brass wire. Use of zinc-coated brass wire electrode significantly improves the machinability of the selected work material within the specified range of process variables.

Suggested Citation

  • Himadri Majumder & Kalipada Maity, 2020. "Effect Of Electrode Material On Cut Qualities Of Shape Memory Alloy During Wedm: A Comparative Study," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(04), pages 1-17, April.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:04:n:s0218625x19501361
    DOI: 10.1142/S0218625X19501361
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