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Surface Modification By Electro-Discharge Machining Using Powder Metallurgy Electrode: A Review

Author

Listed:
  • S. V. V. N. SIVA RAO

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

  • THARRA BHAVANI

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

  • RAHUL KANTI NATH

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

  • PABITRA MAJI

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

  • SUBRATA KUMAR GHOSH

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

  • JOHN DEB BARMA

    (Department of Mechanical Engineering, National Institute of Technology Agartala, Barjala, Jirania 799046, Tripura, India)

Abstract

Since the last two decades, many novel techniques have evolved from electro-discharge machining (EDM). Among them, surface modification is one of the rigorously growing technologies by which surface properties can be enhanced by providing a layer having a thickness up to some microns on the workpiece. Existence of tool material on the machined surface after EDM was observed previously. This attribute of EDM makes it a benchmark in surface modification technology. Surface modification in EDM can be done by using different types of electrodes like solid, powder metallurgy (P/M), brush type, etc. This phenomenon can also be acquired by suspending powder particles into dielectric media. However, P/M electrode gives superior results with less effort and also proves to be economical. In this paper, a review has been made on using P/M electrode in surface modification during EDM. The different types of electrodes for surface modification, development of P/M electrode, types of layers generated and surface roughness improvement are critically analyzed. Also, some scope for future works is suggested here.

Suggested Citation

  • S. V. V. N. Siva Rao & Tharra Bhavani & Rahul Kanti Nath & Pabitra Maji & Subrata Kumar Ghosh & John Deb Barma, 2021. "Surface Modification By Electro-Discharge Machining Using Powder Metallurgy Electrode: A Review," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(01), pages 1-16, January.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:01:n:s0218625x2030004x
    DOI: 10.1142/S0218625X2030004X
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