Influence of Nano Boric Acid Material in Bio-Diesel Blends to Enhance the Surface Quality with Minimum Quality Lubrication

Abstract

Machining with conventional process of lubrication is a general industrial practice for diminishing cutting forces, high temperature, and friction. During the machining process, cutting fluid characteristics plays a crucial role in enhancing machining performance when it is properly chosen. The harmful gases during machining process are often hazardous to individuals and the environment. It is also economically unviable if the cutting fluid cost, method of application, and flow rate is underestimated. Due to chip obstruction and poor absorption, a high amount of heat is liberated and as a result high quantity and high quality of lubricant or coolant are need to be supplied between the chip-tool interfaces consistently. This process becomes costly and degrades the environment. In the current work, nano powder of boric acid is chosen as solid type lubricant in turning process, which is blended with bio-diesel consisting of coconut oil as base oil. The outcomes of nano powder mixed bio-diesel cutting fluids exhibited significant enhancement in machining characteristics when it is compared with wet and dry machining. And also, Taguchi method of orthogonal representation is considered to determine the optimum weight percentage of the bio-diesel blends at different conditions of the machining process. The optimum machining conditions were obtained at high machining operation with a feed of 0.04 mm/min, speed of 600 rpm, and toll diameter of 0.5 mm.