Machinability Evaluation of Nanoparticle Enriched in Vegetable-Based-Nanofluids for Machining Process

Abstract

Vegetable oil had been study to replace mineral based oil as metalworking fluids (MWFs) as it is non toxic, bio-degradable and environmental friendly. Due to vegetable oil’s high viscosity and poor thermal conductivity, some improvement had been applied to vegetable oil such as chemically modified and the addition of additives. The aim of this study to evaluate the machining performance of modified jatropha oil (MJO) with nanoparticle additives of 0.025wt% copper oxide(Cuo) (MJOc) and 0.025wt% hexagonal boron nitride(hBN) (MJOh) as metalworking fluids. The machining performance of MJOc and MJOh were compared with the commercial synthetic ester (SE) through turning process in terms of cutting temperature, surface roughness, tool life and tool wear. The result show that the machining performance of MJOc and MJOh were better compared to SE. In terms of cutting temperature and surface roughness, MJOh shows better maching performance compared to MJOc. In addition, MJOh had same tool life performance with SE which is at cutting length of 6000mm and machining time of 42 minutes. In conclusion, the overall best machining performance is MJOh (MJO+0.025wt% hBN) and has a potential as sustainable MWFs in lubricant market.