Study on Effect of Cutting Fluid (2nd report) : Influence of Cutting Fluid on Surface Finish

This is a report on surface finish examined with various cutting fluids. The relation between the surface finish and fluctuation of cutting force is also examined. The cutting fluids and workpiece materials in this report are the same as in the 1st report except the cast iron. The results obtained are as follows. 1. In such a low cutting speed as V=10m/min, the magnitude of surface roughness is a very large value. It is found that that the surface roughness also decreases with cutting fluids when the type of chip approaches the flow type and a less built-up edge occus. The effect of the mineral oil base is greater than water and water base. 2. The fluctuation of cutting force and surface finish are in the close relation.