Polycrystalline Cubic Boron Nitride (PCBN) discs are ultra-hard tool materials composed of cubic boron nitride (CBN) micropowder sintered with metal or ceramic binders under high temperature and pressure, and then combined with a carbide substrate. Leveraging their exceptional physical and chemical properties, Zhengzhou Berlt PCBN discs excel in high-hardness material processing, high-speed cutting, and challenging machining applications, gradually becoming a critical replacement for traditional tools in modern manufacturing.

1、Ultra-High Hardness and Wear Resistance

The microhardness of PCBN discs reaches HV3000–5000, second only to diamond and far exceeding that of carbide and ceramic tools. Their wear resistance is particularly suited for machining materials with hardness exceeding HRC50 (e.g., hardened steel, chilled cast iron). When processing workpieces with hardness up to 60 HRC, their service life can be over 10 times longer than that of carbide tools.

2、Excellent Thermal Stability and High-Temperature Hardness

PCBN discs exhibit heat resistance up to 1400–1500°C, maintaining hardness higher than ceramic tools at room temperature even at 800°C. Under high temperatures, workpiece materials soften while the tool’s hardness loss remains minimal, creating a "thermal softening effect" that significantly enhances cutting efficiency.

3、Chemical Inertness and Anti-Bonding Capability

PCBN does not chemically react with ferrous metals at 1200–1300°C, preventing diffusion wear during cutting. Additionally, its low friction coefficient (0.1–0.3), far lower than that of carbide (0.4–0.6), reduces built-up edge formation, improving surface finish quality.

4、Strong Comprehensive Cost Advantages

Berlt PCBN discs utilize internationally advanced formulations and processes, achieving a yield rate of no less than 95% (industry average: 80%). Their ultra-uniform structure enhances cutting precision by 30%, further boosting production efficiency and yield rates.