Indian Institute of Technology Palakkad&nbsp;(IIT Palakkad or IIT PKD) is a public autonomous&nbsp;engineering&nbsp;and&nbsp;research&nbsp;institute located in&nbsp;Palakkad,&nbsp;Kerala. It was&nbsp;one of the five new&nbsp;IITs&nbsp;proposed in the&nbsp;2014 Union budget of India. The campus was inaugurated on 3 August 2015. The institute has 94 faculty, 978 students, and 63 non-teaching staffs.

IT Palakkad currently offers four-year Bachelor of Technology (B.Tech) and two years MS programmes in 8 different engineering disciplines including&nbsp;Computer Science, Electrical, Mechanical, Civil among others.

&nbsp;

IIT Palakkad

In recent years, materials with unique metallurgical properties such as Inconel-718 have been developed to meet the demands of extreme applications. In this paper an experimental investigation has been carried out to study the influence of various parameters like peak current, pulse-on time and dielectric flushing pressure on EDM deep-hole drilling of Inconel-718. Copper tube of external diameter 2.5 mm and internal diameter 1 mm was selected as the tool electrode which provides flow of dielectric through the electrode, thereby making the process of flushing less critical. Moreover, the performance of machining is evaluated in terms of material removal rate (MRR), electrode wear ratio (EWR) and overcut. Optical microscope was used to judge the quality at the rim of the drilled holes. Peak current, pulse-on time and flushing pressure were found to be the most critical parameters in EDM deep-hole drilling of Inconel-718.

Department of Mechanical Engineering

World University root node

Conference Proceedings - 14th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2014