Development of Bio based Semi-Synthetic Metal Working Fluid from Industrial Waste Water

摘要

In metal working processes, the use of mineral, synthetic and semi-synthetic cutting fluids have gained widespread acceptance. However, the harmful effects and high risk of life threatening occupational hazards to the machinists as well as causing environmental degradation is discouraging to continue its use in the near future. In this work, micro algal oil, as a potential candidate for producing high performance metal working fluid is investigated. The preliminary constituent of base oil is produced using solvent extraction method with optimized reaction parameters. Further, secondary formulation technique of additives for improving the performance related parameters like extreme pressure wear resistance, corrosion resistance and thermal-oxidative stabilities was incorporated. It is found from this investigation that, the critical tribological performance influencing properties such as higher shear stability, low temperature stability and corrosion resistance are higher in chemically modified algal oil as compared to vegetable oil based metal working fluid.