Title: Analysis of the influence of input parameters of EDM on material removal rate and surface roughness for machining stainless steel 304

Authors: Farooq Ahmed; Tae Jo Ko; Saood Ali

Addresses: School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, South Korea ' School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, South Korea ' School of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do, 712-749, South Korea

Abstract: Electrical discharge machining process is a material removing method that is based on the principle of erosion of work surface by electrical sparks produced by high-density current supply. The process is usually applied on the machining of difficult-to-machine metals with high electrical conductivity, which have some mechanical properties affecting machinability negatively, or on the machining of very complex shapes. These situations make it necessary to closely control the process and check the influence of parameters on the resulting output, which is usually in the form of material removal rate (MRR) and surface roughness. The rate of material removal is the most important parameter as it directly influences the cost of machining and hence needs to be carefully analysed. Statistical analysis of the results obtained by experimental work is also an important part of the study as it determines the influence of input parameters on the behaviour of output response.

Keywords: EDM parameters; ANOVA analysis; material removal rate; MRR; surface roughness.

DOI: 10.1504/IJMMM.2018.089474

International Journal of Machining and Machinability of Materials, 2018 Vol.20 No.1, pp.78 - 89

Received: 03 Feb 2017
Accepted: 12 Jul 2017
Published online: 26 Jan 2018 *

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