Evaluation of lubricity of methanolic extract of mango (Mangifera indica) seed in machining mild steel

Abstract

Methanolic extract of mango seed oil (Mangifera Indica) was evaluated for suitability as lubricant for machini-ng mild steel at various speeds, feeds and depths of cut. The coefficient of friction between the tool and chip in-
dicated that the methanolic extract reduced friction between the tool and work piece. The oil also produced high quality surface finish and continuous chips, which are characteristics of good machining lubricant. The propert-ies of the mango seed oil which influenced performance as machining lubricant were the high fatty acid content, presence of stearic and oleic acids as wetting agents, and high iodine and saponification values.