Effect of applying conventional cutting fluid and liquid nitrogen on grindability of different steels

Abstract

Strained environment is a global problem. In melal industries the USB of coolarlt has become more problematic In terms of both employee health and enVIronmental pollution. It is said thaI the use of coolant forms approximately 8-16 % of the total production cost. The traditional methods that use coolants are now obviously becoming obsolete. Hence, it is clear that uSing a dry Gutting system has great implications for resource preservation and waste reduction. For this purpose, a new Gooling system is designed for dry cutting. This research work presents an eco-friendly cooling Innovation and the benefit gained by using this method. In order to compare the performance of usmg thiS system, grinding experiments were carried out on dry and flood cutting environment In different infeed condition The present work investigates the role of cryogenic cooling by liquid nitrogen jet on chip formation, grinding zone temperature arid surface roughness in grinding steels. The experimental results indicate Significant reduction irl cutting temperature on application of cryogen, whiCh enables favorable chip formatioll It was also Iloted that cryogenic grinding prOVide relatively more surface roughness for less plastic deformatioll and rubbing, shearing and fracturing modes of chip formation and retention of the grit's sharpness. Therefore, it appears that cryogenic cooling, if properly employed, Ilot only provides ellvironment frielldllness but can also Improve the grlndability characteristics.