Abstract
In the present work, an effort is made to evaluate the machining performance of the nano-powder mixed rotary electrical discharge machining (EDM) process by replacing the conventional EDM oil with environmentally friendly biodegradable Jatropha curcas oil (JCO). The performance of nano-powder mixed rotary EDM using JCO dielectric is compared with the conventional EDM process. Peak current, pulse on time, pulse off time, nano-powder concentration, and tool rpm are essential parameters to examine the material removal rate (MRR) and surface roughness (SR) of the EN-31 die steel. It is revealed from the results that the proposed modified EDM process shows a 73% improvement in MRR and 50% reduction in SR as compared to the conventional EDM process using EDM oil. Further, surface morphology, recast layer thickness (RLT) analysis, and microhardness analysis reveals that multi-wall carbon nanotube mixed rotary EDM using JCO shows small micro holes, no micro crack, smaller size debris deposition, lower RLT, and smaller microhardness of recast layer as compared to EDM oil. Finally, the sustainability indexes (SI) analysis result reveals that JCO is environmentally safe and economically justified due to a 9.92% lower SI value as compared to EDM oil.
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Data availability
The datasets used or analysed during the Machining process are available from the corresponding author upon reasonable request.
Abbreviations
- ANOVA:
-
Analysis of variance
- GA:
-
Genetic algorithm
- I p :
-
Peak current
- T on :
-
Pulse on time
- T off :
-
Pulse off time
- P c :
-
Powder concentration
- RSM:
-
Response surface methodology
- TR:
-
Tool rotation
- MRR:
-
Material removal rate
- TWR:
-
Tool wear rate
- SR:
-
Surface roughness
- MWCNT:
-
Multi-wall carbon nanotube
- MOO:
-
Multi-objective optimization
- FESEM:
-
Field emission scanning electron microscope
- RLT:
-
Recast layer thickness
- NPMEDM:
-
Nano powder mixed EDM
- SI:
-
Sustainability index
- JCO:
-
Jatropha curcas oil
- TOPSIS:
-
Technique for order preference by similarity to ideal solution
- GRA:
-
Grey relational analysis
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All the authors have significantly contributed to prepare the article. Following is the contribution of individual Author: RB: Gap identification and conceptualization of the process along with all the experimental work. AKT: critical review and consolidation of write-up in proper format. AP: Data analysis of the manuscript. ARD: Conduction of experimentation. AKS: Formal analysis and data compilation.
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Bajaj, R., Tiwari, A.K., Pramanik, A. et al. Machining performance and sustainability analysis of PMEDM process using green dielectric fluid. J Braz. Soc. Mech. Sci. Eng. 44, 563 (2022). https://doi.org/10.1007/s40430-022-03878-0
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DOI: https://doi.org/10.1007/s40430-022-03878-0