Comparative thermal analysis of cutting fluids in pendular surface grinding

Abstract

The application of cutting fluids in industrial grinding processes is indispensable due to the generated heat in the contact zone. The physical characteristics of the cutting fluid support the cooling and lubrication of the contact zone and can help to prevent heat induced workpiece damages. However, each cutting fluid has different physical properties and therefore the capability to reduce the heat input of the chip removal process into the workpiece varies. This paper investigates the influence of the physical properties of a non-water miscible, mineral oil-based grinding oil in comparison to a water miscible, mineral oil free polymer dilution on the grinding process heat input into the workpiece. The workpiece temperature is determined using an infrared camera and thermocouples whilst conducting the grinding process with cutting fluid. Furthermore, the experimental results are compared with the analytically determined workpiece temperature considering the influence of different models to formulate the convective heat transfer coefficients of the cutting fluid.