For titanium alloy machining tools, the rake surface finish is required to be good, and the knife must have good rigidity and good plasticity. coating. In addition, more precise sharpening is indispensable, the tool stability is good, and the concentricity of the tool is high, so that it can deal with the difficult-to-cut titanium alloy.
In addition, the process performance of titanium alloy is poor, cutting is difficult, and it is very easy to absorb impurities such as hydrogen, oxygen, nitrogen and carbon during hot processing. There is also poor wear resistance and complex production process. The industrial production of titanium started in 1948. The need for the development of the aviation industry makes the titanium industry develop at an average annual growth rate of about 8%. At present, the annual output of titanium alloy processing materials in the world has reached more than 40,000 tons, and there are nearly 30 types of titanium alloys.
In the process of cutting titanium alloys, the matters that should be paid attention to are: cutting titanium alloys should start from two aspects of reducing cutting temperature and reducing bonding, choosing good red hardness, high flexural strength, good thermal conductivity, and poor affinity with titanium alloys The most suitable tool material, tungsten steel is more suitable. Due to the poor heat resistance of high-speed steel, tungsten steel milling cutters should be used as much as possible.
