Some Preliminary Experimental Investigations on Inconel-718 Alloy with Rotary Tool-Electrode Assisted EDM

Abstract:

In this paper, some preliminary experimental investigations have been reported for analysing the machining performance characteristics viz. Material Removal Rate (MRR) & Tool Wear Rate (TWR). Electrical Discharge Machining (EDM) of Inconel-718 alloy via helical threaded cryogenically treated rotary copper tool electrode is conducted. Impact of machining factors viz. peak current (I_p), pulse-on time (T_on), tool rotation (N_t) & hole depth (h) were investigated using Taguchi’s L₉ (3⁴) Orthogonal Array (OA). Optimum arrangements of factors for greatest MRR & least TWR were found in current study. Results predicts that I_p & N_t are two most affecting machining factors that affects MRR. Whereas I_p & T_on are two most affecting machining factors that affects TWR.

• Periodical: Materials Science Forum (Volume 969)
• Pages: 650-655
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.969.650
• Online since: August 2019
• Authors: Rakesh Kumar*, Anand Pandey, Pooja Sharma
• Keywords: Cryogenic, EDM, Inconel 718, MRR, TWR

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