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Surface modification using micro-nano sized powder metallurgical green compact electrode in EDM


Affiliations
1 National Institute of Technology, Shillong, India, India
     

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This work addresses the process of surface modification of aluminium workpiece in EDM process. Powder metallurgical green compact of macro-sized powders of copper (Cu) and nano-sized multi-walled carbon nanotube (MWCNT) are used throughout the surface modification process. The EDM process is carried out by varying the tool parameters, such as the compaction pressure of the green compacts, and process variable settings such as, peak current and pulse on-time setting. The experiments are planned and performed utilizing the Taguchi L9 orthogonal array. The highest MDR value of 0.36 mg/min and the lowest Ra of 2.5 μm achieved in the experimentation. The XRD analysis confirms the tool material's presence in the modified surface.

Keywords

EDM, MWCNT, Surface, Modification, XRD.
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  • Barua, B. M., & Rahang, M. (2022). Surface modification of Al-7075 using Cu-CNT green tool in EDM. Surface Engineering, 1-10.

  • Mandal, P., & Mondal, S. C. (2019). Surface characteristics of mild steel using EDM with Cu-MWCNT composite electrode. Materials and Manufacturing Processes, 34(12), 1326-1332.

  • Mazarbhuiya, R. M., Barua, B. M., & Rahang, M.(2021). Taguchi grey relational multi-response experimental optimization on modification of Al-6061 surface using Si–Cu green compact tool in EDM. Surface Review and Letters, 28(09), 2150073.

  • Patowari, P. K., Saha, P., & Mishra, P. K. (2015). An experimental investigation of surface modification of C-40 steel using W–Cu powder metallurgy sintered compact tools in EDM. International Journal of Advanced Manufacturing Technology, 80(1-4), 343-360.

  • Rahang, M., & Patowari, P. K. (2020). Selective area deposition for pattern generation in EDM using masking technique. Surface Review and Letters, 27(10), 1-16.

  • Sarmah, A., Kar, S., & Patowari, P. K. (2020). Surface modification of aluminum with green compact powder metallurgy Inconel-aluminum tool in EDM. Materials and Manufacturing Processes, 35(10), 1104-1112.

  • Tyagi, R., Pandey, K., Das, A. K., & Mandal, A. (2019). Deposition of hBN+Cu layer through electrical discharge process using green compact electrode. Materials and Manufacturing Processes, 34(9), 1035-1048.

  • Wang, Z. L., Fang, Y., Wu, P. N., Zhao, W. S., & Cheng, K. (2002). Surface modification process by

  • electrical discharge machining with a Ti powder green compact electrode. Journal of Materials

  • Processing Technology, 129(1-3), 139-142.


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  • Surface modification using micro-nano sized powder metallurgical green compact electrode in EDM

Abstract Views: 72  |  PDF Views: 0

Authors

Bhargab Madhab Barua
National Institute of Technology, Shillong, India, India
Maneswar Rahang
National Institute of Technology, Shillong, India, India

Abstract


This work addresses the process of surface modification of aluminium workpiece in EDM process. Powder metallurgical green compact of macro-sized powders of copper (Cu) and nano-sized multi-walled carbon nanotube (MWCNT) are used throughout the surface modification process. The EDM process is carried out by varying the tool parameters, such as the compaction pressure of the green compacts, and process variable settings such as, peak current and pulse on-time setting. The experiments are planned and performed utilizing the Taguchi L9 orthogonal array. The highest MDR value of 0.36 mg/min and the lowest Ra of 2.5 μm achieved in the experimentation. The XRD analysis confirms the tool material's presence in the modified surface.

Keywords


EDM, MWCNT, Surface, Modification, XRD.

References