Cubic boron nitride is synthesized by hexagonal boron nitride and catalyst at high temperature and high pressure, which is another new product after the advent of synthetic diamond. It has excellent properties such as high hardness, good red appearance and wide band gap. Its hardness is second only to diamond, but its thermal stability is much higher than that of diamond, and it has great chemical stability to iron-based metal elements.

The hardness of polycrystalline cubic boron nitride is very high, reaching 2700~5000HV, second only to diamond. Bending strength and fracture toughness are between cemented carbide and ceramics; The thermal stability of synthetic diamond is much higher than that of synthetic diamond, and it can still be cut at 1300℃, with strong oxidation resistance, and does not produce oxidation at 1000℃.

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Application scope of cubic boron nitride

Cubic boron nitride abrasive tool has excellent grinding performance, which can not only be competent for processing difficult-to-grind materials and improve productivity, but also help to strictly control the shape and dimensional accuracy of workpieces, and can also effectively improve the grinding quality of workpieces, thus improving the fatigue strength of parts, prolonging service life and increasing reliability.

In addition, the production process of cubic boron nitride abrasive is superior to ordinary abrasive in energy consumption and environmental pollution. Therefore, expanding the production and application of cubic boron nitride abrasive is an inevitable trend of the development of machinery industry.

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