Lubricity potentials of Azadirachta indica (neem) oil and Cyperus esculentus (tiger nut) oil extracts and their blends in machining of mild steel material.

Friction amongst the cutting tool and workpiece in metal machining produces heat that reduces tool life and workpiece integrity. Consequently, non-biodegradable soluble mineral oil is predominantly used as a lubricant to enhance machining operations. Nevertheless, recent investigations focus on environmentally friendly biodegradable oils for lubrication.