Study of tribo-chemical lubricant film formation during application of nanolubricants in minimum quantity lubrication (MQL) grinding

This paper presents the study of mechanism of nanolubricant impingement in minimum quantity lubrication grinding. To study the role of nanolubricants (a new class of advanced lubricants integrating multicomponent chemistries) during workpiece-tool interaction, surface-grinding tests were performed on ductile iron workpieces using an aluminium oxide wheel under varied infeed conditions. The process performance in terms of force ratio, specific energy, and G-ratio has shown substantial improvement when using nanolubricant. Formation of tribo-chemical films of Mo–S–P chemistry complex on the workpiece surface was identified as the mechanism responsible for these improvements.