Applicability of cutting fluids with nanoparticle inclusion as coolants in machining

Abstract

Heat liberated and the friction associated with the cutting process ever pose a problem in terms of tool life. Cutting fluids have been the conventional choice to address the problem. However, environmental hazards posed by the fluids have limited their usage, giving rise to minimum quantity lubrication. Nevertheless, its capability to carry away the heat and provide adequate lubrication is limited. In view of the above problems, nanofluids have gained prominence. Nanofluids, with their cooling and lubricating properties, have emerged as a promising solution. This article deals with characterizing changes in the heat transfer capacities of nanofluids with the inclusion of nanoparticles in the cutting fluids. To estimate the prevalent temperatures in machining, a facing operation is carried out under constant cutting conditions in a dry state and using conventional cutting fluid as coolant. Heat transfer coefficients are estimated using the analogy for flow over flat plates in all lubricating conditions. The temperatures calculated using the estimated heat transfer coefficient for conventional cutting fluid are compared with the experimental observations to validate the methodology. Temperature profiles are simulated using ANSYS 5.4 to infer on the suitability of the coolants in enhancing machining performance. Nanoparticle inclusion is found to be beneficial in improving the coolant properties. Nevertheless, the high cost of nanoparticles may appear to be prohibitive and hence minimum requirement of inclusion is estimated.

A Comprehensive Review on Machining of Ti6al4v

“…Srikant et al [32] has noted in his experimentation with CuO nano particles based nano fluid that the tool tip temperature reduced significantly during application of nanofluid…”

Nanofluids Based on Carbon Nanostructures

“…Phuoc et al [43] MWCNTs 3 . Different weight ratio of Chitosan surfactant, namely, 0.1, 0.2, and 0.5 wt.%, was used to disperse MWCNTs in water.…”

“…Conventional heat transfer fluids, such as mineral oil, water, and ethylene glycol (EG), have poor heat transfer properties, compared to solids. In recent years, nanofluids have been investigated as potential heat transfer fluids [1][2][3][4][5][6][7][8][9][10][11].…”

Research on Applying Nano Cutting Oils in Spur Gear Hobbing Process

“…Further, based on the results in end milling obtained from the Taguchi optimization method, M. Sayuti reported that SiO 2 nanolubrication exhibits the promising results as reducing cutting temperature as well as cutting forces, and improving surface finish [2]. RR Srikant concluded that thermal conductivity, heat transfer capacity and tool life were enhanced by using cutting fluids with an inclusion of CuO nanoparticles in MQL turning process [3]. Bizhan Rahmati et al investigated the optimum molybdenum disulfide (MoS2) nanolubrication parameters in CNC milling of AL6061-T6 alloy [4].…”