Journal Article

MRR and TWR evaluation on electrical discharge machining of Ti-6Al-4V using tungsten : copper composite electrode

Kumar, O Amith, Narayanan, P V V Sathya, Karthick Raj, G, Rajamanickam, S, Prasanna, J

2017

Overview

In this paper Ti-6Al-4V used as workpiece material and it is keenly seen in variety of field including medical, chemical, marine, automotive, aerospace, aviation, electronic industries, nuclear reactor, consumer products etc., The conventional machining of Ti-6Al-4V is very difficult due to its distinctive properties. The Electrical Discharge Machining (EDM) is right choice of machining this material. The tungsten copper composite material is employed as tool material. The gap voltage, peak current, pulse on time and duty factor is considered as the machining parameter to analyze the machining characteristics Material Removal Rate (MRR) and Tool Wear Rate (TWR). The Taguchi method is provided to work for finding the significant parameter of EDM. It is found that for MRR significant parameters rated in the following order Gap Voltage, Pulse On-Time, Peak Current and Duty Factor. On the other hand for TWR significant parameters are listed in line of Gap Voltage, Duty Factor, Peak Current and Pulse On-Time.

• Publisher: IOP Publishing
• Subject: Aerospace industry / Composite materials / Copper / EDM electrodes / Electric discharge machining / Electric potential / Machine shops / Marine chemistry / Material removal rate (machining) / MRR / Nuclear reactors / Process parameters / Taguchi methods / Ti-6Al-4V Electrical Discharge machining / Titanium base alloys / Tool wear / Tungsten / TWR / Voltage / Wear rate / Workpieces