Experimental investigation of process parameters in WEDM of Al 7075 alloy

Kingshuk Mandal; Dipankar Bose; Souren Mitra; Soumya Sarkar

doi:10.1051/mfreview/2020021

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Volume 7 (2020)

Manufacturing Rev., 7 (2020) 30

Abstract

Open Access

Issue		Manufacturing Rev. Volume 7, 2020


Article Number		30
Number of page(s)		9
DOI		https://doi.org/10.1051/mfreview/2020021
Published online		08 September 2020

Manufacturing Rev. 7, 30 (2020)

Research Article

Experimental investigation of process parameters in WEDM of Al 7075 alloy

Kingshuk Mandal¹^*, Dipankar Bose², Souren Mitra¹ and Soumya Sarkar¹

¹ Production Engineering Department, Jadavpur University, Kolkata 700032, India
² Mechanical Engineering Department, NITTTR-Kolkata, Kolkata 700106, India

^* e-mail: mandal.kingshuk1@gmail.com

Received: 18 March 2020
Accepted: 13 July 2020

Abstract

Process parameters selection is a critical task in wire electro-discharge machining (WEDM). The parameter settings would vary when a material to be machined is changed. In the present study, experimental investigation has been carried out for appropriate selection of process parameters in WEDM of Al 7075. It has been perceived that pulse on time (T_on), arc on time (A_on) pulse off time (T_off), arc off time (A_off), servo sensitivity (S_c), wire tension (W_t) and servo voltage (S_v) are the major influencing factors on machining speed (V_c), corner error (C_e) and surface roughness (R_a) for this alloy. It is also observed that selected seven process parameters are essential for effective machining of Al 7075 alloy. Finally, three-dimensional (3D) surface topography has been analysed to determine the characteristics of the machined surface.

Key words: Wire electro discharge machining / Al 7075 alloy / machining speed / corner error / surface roughness

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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