Hardness, wear resistance is better, because the cutting tool from the workpiece material, the hardness must be greater than the hardness of the workpiece, the hardness is one of the basic characteristics of the tool, therefore, the hardness of the stone carving knife general requirements above 60HRC .
High strength, toughness is also better, in order to props in the cutting process does not produce chipping and breaking of the phenomenon, requires the tool has a good strength and toughness.
Good heat resistance, high-speed cutting, there will be a lot of cutting heat generation, requires the tool has a good heat resistance, while the tool has a good high-temperature conditions, anti-oxidation, anti-adhesive ability to extend the tool Of the service life.

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