1: The hardness of PCD carving tools can reach 8000HV, which is 8-12 times that of hard alloys;
2: The thermal conductivity of PCD carving tools is 700W/mK, which is 1.5 to 9 times that of hard alloys, and even higher than PCBN and copper. Therefore, the heat transfer of PCD tools is rapid;
3: The friction coefficient of PCD carving tools is generally only 0.1~0.3 (the friction coefficient of hard alloys is 0.4~1), so PCD tools can significantly reduce cutting forces;
4: The thermal expansion coefficient of PCD carving tools is only 0.9 × 10 ^ -6~1.18 × 10 ^ -6, which is only 1/5 of that of hard alloys. Therefore, PCD tools have small thermal deformation and high machining accuracy;
5: The affinity between PCD cutting tools and non-ferrous and non-metallic materials is very small, and chips are not easily adhered to the tool tip during the machining process, forming chip lumps.
