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Influence of Rotary Assisted Electrical Discharge Machining of 17-4PH Stainless Steel Using Taguchi Technique

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Title Influence of Rotary Assisted Electrical Discharge Machining of 17-4PH Stainless Steel Using Taguchi Technique
 
Creator Kolli, Murahari
Kosaraju, Satyanarayana
Aruri, Devaraju
Nageswararao, Medikondu
 
Subject Rotary EDM
Taguchi Method
Surface Morphology
PH 17-4 Stainless steel
ANOVA analysis
 
Description 801-808
The current investigation has study the material removal rate, surface roughness and electrode wear rate in rotary tool
assisted EDM of 17-4 PH stainless steel. 17-4 PH SS has widely used in aerospace, marine, nuclear, and chemical
processing due to their characteristic high strength to weight ratio and corrosion resistance properties. This paper primarily
focuses on enhancing the flushing efficiency of dielectric fluid in the EDM process and to improve the machining
performance characteristics. A custom designed rotating electrode attachment has fabricated and used to assist with the
EDM process. The experiments are designed and planned using Taguchi L27 Orthogonal array technique.The experiments
are planned for four input factors and each parameter is varied at three levels. Current, pulse on time, pulse off time and
Electrode Rotation Speed are input factors. ANOVA test is conducted to find out the significance of factors and their
percentage contribution on the performance characteristics like Material Removal Rate, Surface Roughness and Electrode
Wear Rate. The resultsconcluded that Electrode Rotation Speed has more influence on Material Removal Rate and Electrode
Wear Rate. An individual percentage and interaction percentage of parameters from ANOVA confirm that their effects
are higher in Material Removal Rate (MRR) compared to Surface roughness (Ra) and Electrode Wear Rate (EWR). Finally,
surface morphology studies revealed that significantly less cracks and voids had formed on the EDM’ed sample at optimum
condition.
 
Date 2023-01-20T10:22:06Z
2023-01-20T10:22:06Z
2023-01
 
Type Article
 
Identifier 0971-4588 (Print); 0975-1017 (Online)
http://nopr.niscpr.res.in/handle/123456789/61228
https://doi.org/10.56042/ijems.v29i6.70267
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJEMS Vol.29(6) [December 2022]