抄録
Titanium alloy has excellent characteristics such as a light weight, high strength, high specific strength alloy with excellent corrosion resistance and biocompatibility, and is mainly used in the aerospace and medical fields. However, titanium alloys are known as difficult-to-cut materials because of their low thermal conductivity and their high chemical activity. Therefore, although it is common to use a large amount of cutting fluid agent at the production site, it is desirable to reduce the amount used in terms of cost increase and environmental impact. Therefore, in this research, the effectiveness of gas-assisted cutting of titanium alloy was experimentally examined by carrying out cutting tool wear tests and two-dimensional cutting experiments using nitrogen gas that can be expected to suppress oxidation heat generation. As a result, it was found that the tool wear was reduced at a cutting speed of 150 m / min or more and the oxidation reaction of tool rake surface was reduced by the EPMA in the nitrogen blow cutting.
