Representative high hardness materials die steel, hardened steel and roll and so on, most of this material using conventional grinding method for finishing. Now, in order to reduce production costs and switch to machining.

To achieve high hardness materials machining, the tool must have the condition should be much higher than the hardness of the hardness of the material to be cut. In addition, due to the high hardness materials machining, the tip temperature is very high, so it needs to have available in the following features:

Good resistance to plastic deformation, namely high-temperature hardness well.

Good chemical stability, that will not happen with the cut material, oxygen and cutting fluids and other chemical reactions, it does not appear the phenomenon of thermal decomposition.

Good thermal conductivity, ie high temperature heads will not produce defects due to thermal shock phenomenon.

Most conventional cubic boron nitride (cbn) tool for high-speed cutting of high hardness and interrupted cutting. Compared with the cubic boron nitride cutting tools, poor toughness of ceramic cutting tools, in terms of reliability also lose some. But the price of ceramic cutting tools Tool cheaper than CBN, so reducing production costs is very favorable. Just pay attention to the shape of the actual use of the tip and choose the most suitable machining conditions to ensure that the entire process into a stable state outset, it can use instead of cubic boron nitride ceramic tool tooling with high hardness materials.