An Experimental Investigation and Optimization of Electrical Discharge Drilling for Small Hole Drilling with High Aspect Ratio
International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Open Access | Fully Refereed | Peer Reviewed International Journal

ISSN: 2319-7064

Views: 128 , Downloads: 114 | CTR: 89 % | Weekly Popularity: ⮙1

Research Paper | Mechanical Engineering | India | Volume 6 Issue 11, November 2017

An Experimental Investigation and Optimization of Electrical Discharge Drilling for Small Hole Drilling with High Aspect Ratio

Ashok Kumar, Sandeep Kumar Rawal

Electric discharge drilling (EDD) is a thermo erosion processused to produce micro/smallholes in hard and composite materials. EDD is mostly used to drill small holes in products for several applications such as fuel injector, dentaland medical devices, turbine blades cooling channels etc. In present work, small holes of diameters () 0.5 mm and 1mm are drilled in Die steel using tubular electrodes of copper and brass. Using Taguchi design of experiment method, process parameters namely discharge current (Ip), pulse on time (Ton), pulse-off time (Toff) and electrode material are investigated and optimized for different hole geometries using electrodes of 1 mm & 0.5 mm. In EDD process, drilling capability and diametric over cut (DOC) are the performance characteristics under investigation.Using Grey relational analysis (GRA), both performance characteristics are optimized simultaneously.

Keywords: Electricdischarge drilling, hole drilling with high aspect ratio, drilling capability, diametric over cut, Taguchi method, Grey relational analysis

Edition: Volume 6 Issue 11, November 2017

Pages: 1833 - 1842

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Ashok Kumar, Sandeep Kumar Rawal, "An Experimental Investigation and Optimization of Electrical Discharge Drilling for Small Hole Drilling with High Aspect Ratio", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=ART20177895, Volume 6 Issue 11, November 2017, 1833 - 1842

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