CBN (cubic boron nitride) machine clip blade, cubic boron nitride structure, the molecular formula BN, the crystal structure (Figure 1) similar to diamond, hardness slightly lower than the diamond, HV72000 ~ 98000 MPa, commonly used as abrasive and cutting tools material. Its widely used in the mold industry, precision machining of cast iron parts and steel after quenching the needs of precision machining; and processing results can be achieved by the car on behalf of the mill (that is, after the car can be achieved grinding effect), than the average tool has a very superior cost-effective .

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