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Keywords

Ti-6Al-4V, MWCNT, Graphite, Hybrid nanofluid, Cutting force

Document Type

Article

Abstract

Titanium alloys are popular in the aerospace and medical fields because they are very robust but difficult to work with. The study was carried out on a hybrid nanofluid (graphite and MWCNTs, in sunflower oil) under minimum quantity lubrication (MQL) conditions. Unlike conventional lubrication methods, hybrid nano-additives reduce cutting forces during turning. The Taguchi L18 orthogonal array was employed to study the effects of cutting speed, feed rate, and cooling conditions on cutting force. The ``smaller-is-better'' rule was applied to convert the average cutting force into signal-to-noise S/N ratios. ANOVA was used to determine the extent to which each factor contributed. The hybrid nanofluid reduced cutting forces relative to baseline conditions, thereby improving lubrication and heat dissipation. The cutting speed of 150 m/min, a feed rate of 0.1 mm/rev, and cooling conditions of 4 wt.% MWCNTs and 10 wt.% graphite are the optimal machining parameters. ANOVA showed that the feed rate accounted for 86.4% of the cutting force, followed by the cooling conditions (9.6%) and the cutting speed (3.51%). The 95% confidence level showed that all parameters were statistically significant. The results reveal that hybrid nanofluids can reduce cutting forces, thereby improving machining.

Additional Files
Response to Reviewer 3.docx (18 kB)
Supplementary File

DOI

10.30684/2412-0758.1577

First Page

172

Last Page

186

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