Comparative micro-EDM studies on Ni based X-alloy using coated and uncoated tools

Asma Perveen, M. P. Jahan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nickel based alloys have found their wide range of applications in the automotive, oil and gas, and aerospace industries due to their excellent mechanical and thermal properties. However, these alloys impose greater challenges to conventional machining techniques due to their extreme hardness. Therefore, non-traditional machining process like micro-electro discharge machining, which is a non-contact machining process, comes into consideration. In this study, the machinability of Ni based X-alloy was investigated using micro-EDM process with the aid of coated and uncoated tools. From the experimental results, it was evident that the machining time was reduced with the increase of discharge energy for both the coated and uncoated tools. Increase in discharge energy also resulted in enlargement of entrance diameter and overcut. However, the non-conductive nature of coating caused in the reduction of overcut for machining using coated tools. The tool wear was found to reduce with the increase of discharge energy due to shorter machining time at higher discharge energy. Finally, crater size also increased with the increased discharge energy. The coated tools resulted in bigger crater sizes than uncoated tools at 1000 rpm, however, for higher tool rotation the difference was not significant.

Original languageEnglish
Title of host publicationManufacturing Sciences and Technologies VIII - 8th ICMST 2017
EditorsSujan Debnath
PublisherTrans Tech Publications
Pages13-19
Number of pages7
ISBN (Print)9783035712032
DOIs
Publication statusPublished - Jan 1 2018
Event8th International Conference on Manufacturing Science and Technology, ICMST 2017 - Hong Kong, Hong Kong
Duration: Jun 23 2017Jun 25 2017

Publication series

NameMaterials Science Forum
Volume911 MSF
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference8th International Conference on Manufacturing Science and Technology, ICMST 2017
CountryHong Kong
CityHong Kong
Period6/23/176/25/17

Keywords

  • Discharge energy
  • Micro-EDM
  • Micro-holes
  • Ni alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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