Abstract
Inconel 718 alloy is, in exacting superalloy, used extensively in the most sophisticated application such as aerospace, chemical, marine and high-speed racing cars. However, the characteristics of this material make it difficult to machine due to poor thermal conductivity (11 W/mK) and work hardening. The turning process is classified as a process that produces continuous chips and experiences elevated temperatures. With emerging new and efficient MQL delivery systems, the industry has shown drift from flood and dry lubrications towards MQL. Having this in mind, to further improve the cutting fluids, a novel hybrid nanocomposite of Cu–Zn was developed in situ with mechanical alloying. Cu–Zn/vegetable oil (groundnut oil) hybrid nanofluids were prepared by dispersing the synthesized nanocomposite powder in vegetable oil. A unist MQL system combined with a compressor is used to supply nanofluid mist to the cutting zone. The inserts used were TiAlN coated beyond blast insert from Kennametal with ISO designation CNGG 120408. The insert holder used was from Kennametal beyond blast with ISO designation MCLNL 2525 M12BB. The intent of this work is to haul out the effect of cutting parameters like speed, feed, depth of cut, volume of fluid and air pressure, when machined under dry, MQL/vegetable oil and MQL/nanofluid conditions. The results were compared while machining with dry and Veg/MQL lubricating conditions. A 39% reduction in surface roughness was obtained when compared to dry machining.
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Abbreviations
- MQL:
-
Minimum quantity lubrication
- C:
-
Cooling condition
- V c :
-
Cutting speed (m/min)
- f :
-
Feed rate (mm/rev)
- a :
-
Depth of cut
- Ra:
-
Arithmetic average roughness (mm)
- F :
-
Variance ratio
- P :
-
Probability of significance
- R2:
-
Determination coefficient
- DOE:
-
Design of experiments
- ANOVA:
-
Analysis of variance
- PCR:
-
Percentage of contribution
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Sandeep Kumar, M., Vasu, V., Venu Gopal, A. (2020). Investigation on Influence of Hybrid Nanofluid/MQL on Surface Roughness in Turning Inconel-718. In: Voruganti, H., Kumar, K., Krishna, P., Jin, X. (eds) Advances in Applied Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-1201-8_120
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DOI: https://doi.org/10.1007/978-981-15-1201-8_120
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