How PCBN inserts milling the hardened steel efficiently at high speed? High hardness materials include ordinary hardened steel, hardened mold steel, bearing steel and 

roll steel, etc., are typical wear-resistant structural materials, and are widely used to manufacture various parts that require high hardness and wear resistance. However,

because these materials usually have high hardness (HRC 55-65), if they are processed by traditional cutting methods, the processing efficiency will be low, the cost will be 

high, and the environment will be polluted.

At present, the tool materials that can be used for high-speed milling hardened steels are CBN inserts, ceramics inserts, coated carbide inserts, etc. When the cutting speed

is higher than 1000m / min, PCBN is the best tool material for cutting hardened steel. The choice of milling parameters of the hardnened materials depends on factors such 

as the machinability of the workpiece material and the wear resistance of the tool material. When selecting the paramters of cutting, comprehensive consideration should be 

given to processing efficiency, tool life and processing accuracy requirements, so as to achieve the best economic benefits.

Such as our RNEN090300, SNEX1203ZZ, OPEX series PCBN milling inserts are not only meet the requirements of high efficiency and high precision of cutting, but also have

good economic benefits.