Abstract
This study aims to improve tool life by investigating the effectiveness of the use of high oxygen atmosphere for the reduction of adhesion by generation of oxide. Titanium alloy (Ti-6Al-4V), Inconel 718 and four other kinds of coated carbide end mills were used in this experiment, and the effect of cutting atmosphere on tool wear were investigated by side cutting under the dry cutting condition. From the results obtained, because the adhesion was decreased by the oxidation, the tool life in the high oxygen atmosphere became longest under the dry cutting conditions. Moreover, when the titanium alloy was machined, (TirAl)N and TiSiN recorded the highest wear reduction in the high oxygen atmosphere. The smallest wear was recorded by TiBON. It was observed that machining under the high oxygen atmosphere was effective to demonstrate the performance of the coating tool from which lubricity was given by the oxide generation.
