Carbon (N) titanium (TiCN) usually cemented carbide mainly composed of TiC TiC-Ni-Mo alloy. Such alloys with high hardness (generally up to 91 ~ 93.5HRA, the individual is 94 ~ 95HRA, reached the level of hardness of ceramic cutting tools), good wear resistance and ideal anti-month depression abrasion, high-speed cutting steel material have lower wear rate. In addition, it also has a high oxidation resistance, heat resistance (high temperature at 1100 ~ 1300 ℃ still capable of cutting), good chemical stability.
TiCN based alloy having a close ceramic hardness and heat resistance, but the bending strength of ceramics is much higher than can be used to make high-speed finishing tool material used to fill the WC-based cemented carbide and ceramics blank material. In recent years, TiCN based alloy strength has been continuously improved by 700 ~ 800MPa up to the nearest 1800 ~ 2000MPa. At the same time, the toughness is also rising, and with the indexable insert has overcome the difficulties of welding. Therefore, it is not only used as a finish, but also extended to semi-finishing, roughing and interrupted cutting. In high-speed cutting steel, especially for surface roughness less demanding roughing and semi-finishing, TiCN based alloy is the best.
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