TiC coating has high hardness and wear resistance, good oxidation resistance, can form titanium oxide film during cutting to reduce friction coefficient, reduce tool wear, make cutting speed increase by more than 40%, and is more suitable for high-speed cutting. The TiC coating has a high bonding temperature with the steel, the surface grains are very fine, and the built-up edge is rarely generated during cutting, which is suitable for high-speed precision turning. The disadvantage is that the coefficient of linear expansion differs greatly from that of the base body. Therefore, the coating tends to crack when high-speed turning or milling of hard materials, high-temperature alloys or workpieces with inclusions.

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