Effects of blended vegetable-based cutting fluids with extreme pressure on tool wear and force components in turning of Al 7075-T6

In this study, performances of four different types of vegetable-based cutting fluids (VBCFs) over a commercial mineral cutting fluid were evaluated for machinability of Al 7075-T6. Lubrication properties of VBCFs were improved with additive of extreme pressure. Cutting force and tool wear data were obtained for performance analyses of cutting fluids during longitudinal turning of Al 7075-T6. Cutting, feed and radial forces indicated 1.7038.25% improvements for VBCFs over the commercial mineral cutting fluid. The lowest average values of flank and nose wears obtained with blended cutting fluid containing 12% of extreme pressure were 0.09 and 0.10?mm, respectively, whereas these values for the commercial mineral cutting fluid were 0.18 and 0.15?mm. The scanning electron microscope results showed adherence of workpiece material occurred on rake and flank faces, and flank and nose wears were the dominant wear modes. It was found that performances of VBCFs during turning of Al 7075-T6 were better than that of the commercial mineral cutting fluid. Copyright (c) 2012 John Wiley & Sons, Ltd.