Vol 8, No 3 (2017) > Mechanical Engineering >

Synthesis and Experimental Investigation of Tribological Performance of a Blended (Palm and Mahua) Bio-lubricant using the Taguchi Design of Experiment (DOE)

P.N.L. Pavani, R. Pola Rao, C.L.V.R.S.V. Prasad


Abstract: The increasing prices of
commercial lubricants and global attention towards a green environment have become the key issues to re-think
about alternatives to commercially available lubricants. With these prospects in mind,
vegetable oils can be utilized as an option to commercially available
lubricants, due
to their biodegradable and nontoxic nature. Moreover, they possess certain
advantages like lower volatility and high flash/ fire points, higher viscosity
index, excellent lubricity and cost savings. These properties of bio-lubricants are more often
considered as important in the preparation of various bio-fuels.  So far bio-lubricants have been employed in
the preparation and testing of bio-fuels for various automotive applications.
The primary aim of this study is to infer a novel application of bio-lubricants
in the subject area of machining. During machining, machinability and
performance are most
frequently determined by the friction and wear characteristics of the tool and
workpiece materials. In this work, first friction and wear characteristics of
(blended vegetable oils in various proportions) formulated from Palm and Mahua
oils have been
investigated using a Pin-on-Disk
wear testing machine. A bio-lubricant (composed
of blended vegetable oils) is synthesized by using two
base oils and blending them in different possible proportions. The tribological
properties have been studied over an AISI 1040 Steel disc specimen with aluminium
pins under various bio-lubricant environments using the Taguchi Design
of Experiment (DOE). During the study, it was observed that the
abrasive and adhesive wear were the main wear mechanisms that occurred in the
tests. The results have shown that total wear of the test specimens under all
machining conditions for 90% Mahua and 10% Palm blended oil combination is
found to be at a minimum.
Keywords: Blended bio-lubricant; Friction; Tribological performance; Wear

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