Abstract
The current study demonstrates through experiment the effect of solid lubricant assisted minimum quantity lubrication (MQL) on the machining performance when turning Alloy 718 with cemented carbide tools. A powder of nanosized (~30 nm) graphite nanoplatelets (GnP) was dispersed (0.2% vol.) in a vegetable oil-based lubricant “ECOLUBRIC E200L” and used in MQL-assisted machining. The effect of cutting conditions on the machining performance parameters such as forces, tool wear, surface finish, and vibrations generated was studied. Results demonstrate a significant improvement of the machining performance when MQL-assisted turning of Alloy 718 with GnP-modified oil in terms of tool life, surface finish and process stability.
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