Performance characteristics of diamond cutting tools

① Very high hardness and wear resistance: natural diamond has very high wear resistance, and when processing high-hardness materials, the life of diamond tools is lO ~ 100 times that of cemented carbide tools, or even up to several hundred times.

2 Has a very low friction coefficient: the friction coefficient between diamond and some non-ferrous metals is lower than other tools, the friction coefficient is low, the deformation is small during processing, and the cutting force can be reduced.

③ The cutting edge is very sharp: the cutting edge of the diamond tool can be ground very sharp, and the natural single crystal diamond tool can be as high as 0.002 ~ 0.008μm, which can be ultra-thin cutting and ultra-precision machining.

④ It has high thermal conductivity: the thermal conductivity and thermal diffusivity of diamond are high, the cutting heat is easy to disperse, and the temperature of the cutting tool is low.

⑤ Has a low coefficient of thermal expansion: the coefficient of thermal expansion of diamond is several times smaller than carbide, and the change in tool size caused by cutting heat is very small, which is particularly important for precision and ultra-precision machining with high dimensional accuracy requirements.

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