Performance study of EDM process parameters using TiC/ZrSiO [sub] 4 particulate-reinforced copper composite electrode
ID Saminatharaja, Duraisivam (Author), ID Suresh, Periyakgounder (Author), ID Selvaraj, Mahalingam (Author), ID Elangandhi, Jamuna (Author)

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Electrical discharge machines (EDM) are widely employed in machining components containing complex profiles of hard-to-cut and machining materials. However, the fabrication-of-tool time for the EDM process is excessively high in the traditional machining method, which significantly affects the machining rate. Therefore, in this paper, a powder metallurgy (PM) technique is employed to fabricate the tool electrode using copper (Cu), titanium carbide (TiC), and zirconium silicate (ZrSiO4) for different combinations. An L18 orthogonal array (OA) is planned using the following input parameters: three types of tools (Cu, Cu90, Cu80), peak current (PC) [A], pulse on time (PT) [µs], and gap voltage (GV) [V]. The performance of EDM is evaluated through the material removal rate (MRR), tool wear rate (TWR), and surface roughness (SR). The process parameters are optimized using two different techniques: the technique for order of preference by similarity to the ideal solution (TOPSIS) and grey relational analysis (GRA). TOPSIS and GRA optimization techniques produce the same optimal parametric solution for less TWR, SR, and higher MRR with the combination of the Cu90 tool, E8 APC, 15 µs pulse PT, and 75 V GV. Based on the ANOVA table of TOPSIS, pulse on time plays a major role, contributing 46.8 % of the machining performance; peak current shows the most significant contribution of 39.3 % of the machining performance using GRA values. Furthermore, the scanning electron microscope (SEM) image analyses are carried out on the machined workpiece surface to understand the effect of tools on machining quality.

Keywords:powder metallurgy, composite tool, copper, electrical discharge machine, technique for order of preference by similarity to ideal solution, grey relational analysis
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Version of Record
Number of pages:Str. 547-556
Numbering:Vol. 67, no. 11
PID:20.500.12556/RUL-133579 This link opens in a new window
ISSN on article:0039-2480
DOI:10.5545/sv-jme.2021.7254 This link opens in a new window
COBISS.SI-ID:87277827 This link opens in a new window
Publication date in RUL:02.12.2021
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Record is a part of a journal

Title:Strojniški vestnik
Shortened title:Stroj. vestn.
Publisher:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
COBISS.SI-ID:762116 This link opens in a new window

Secondary language

Title:Študija zmogljivosti procesa EDM z elektrodo iz kompozita bakra in ojačitvenih delcev TiC/ZrSiO [sub] 4
Keywords:prašna metalurgija, kompozitno orodje, baker, EDM, TOPSIS, GRA

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