Application?
The solid CBN insert applies to various ferrous metals, such as cast iron, nodular cast iron, pearlite grey cast iron, HRC45-68 hardened steel, bearing steel, tungsten carbide, hard roller and sintered alloy, particularly for auto parts, roller, gear and bearing industry. ? ? Description of CBN material The machining of hard metal materials requires significantly harder cutting materials. Super hard cubic boron nitride (cBN) is the hardest known material eligible for the machining of ferrous materials and other super hard materials. CBN materials posses properties of high hardness, high resistance to corrosion and high thermal stability. ? Worldia Solid CBN Insert 1) The?solid CBN insert?has high hardness and abrasive resistance. The hardness of PCBN blanks reaches 3,000 to 5,000HV, so the PCBN cutting tool has high abrasive resistance. The abrasive resistance of PCBN cutting tool is 50 times that of tungsten carbide cutting tool, 30 times that of coating tungsten carbide cutting tool, and 25 times that of ceramic cutting tool.
2) With high thermo stability and high heat resistance, the?solid CBN insert?can bear temperature as high as 1400 to 1500°C. Under high temperature, PCBN cutting tool shows good thermo stability and red hardness.
3) The solid CBN insert features high oxidation resistance. It still will not be oxidized under the temperature of 1000°C. Even under 1200 to 1300°C, the?solid CBN insert?will not react to iron series materials.
4) Good heat conductivity. The heat conduction coefficient of PCBN material is lower than that of diamonds, but it is higher than that of tungsten carbide.
5) Low friction coefficient. ?The friction coefficient of PCBN is only 0.1 to 0.3, while that of tungsten carbide is 0.4 to 0.6. ? Specifications

Parameters Recommended for PCBN Cutting Tool
Work Piece Material	Hardness	V(m/min)	f (mm/rev)	Ap (mm)
Gray Cast Iron	HB170~300	500~1500	0.1~0.4	0.1~1.5
Alloyed Iron	HB240~300	150~300	0.05~0.4	0.1~0.5
Nodular Cast Iron	100~350	200~400	0.1~0.4	0.1~0.5
P/M Fe-based	HRC55-65	50~150	0.05~0.4	0.05~0.5
Hardened Steel	HRC55~65	80~200	0.05~0.2	0.05~0.2
Heat-resistant Alloys	110~160	50~200	0.05~0.2	0.05~0.2

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Specifications of Solid CBN Insert
? ???Item	?????? Basic Parameters (mm)				?????????? ?
? ? ? ISO	? ? L	? ΦD	? ?H	? ?R	? ? ? ?Note
? SNMN090412	? ? 9.525	? ?9.525	? ?4.76	? ? ?1.2	?
? SNMN120408	?? 12.7	? ?12.7	? ?4.76	? ? ?0.8	?
? SNMN150704	? ?15.875	? ?15.875	? ?7.94	? ? ?0.4	?
? SNMN201020	???? 20	? ?20	? ?10	? ? ?2.0	?
? SNMA120408	??? 12.7	? ?2.7	? ?4.76	? ? ?0.8	?
? SNMN12T612	? ?12.7	? ?12.7	? ?6.75	? ? ?1.2	?
? SMNN150720	? ?15.875	? ?15.875	? ?0.80	? ? ?2.0	?
? SNMN201020	? ? 20	? ?20	? ?10	? ? ?2.0	?
? CNMN120404	? ?12.7	? ?12.7	? ? 4.76	? ? ?0.4	?
? CNMN12T608	? ?12.7	? ?12.7	? ? 6.75	? ? ?0.4	?
? CNMN150712	? ?15.875	? ?15.875	? ? 7.94	? ? ?1.2	?
??RNMN060400	? ?6.35	? ?6.35	? ? 4.76	? ? ?0	?
? RNMN090400	? ?9.525	? ?9.525	? ? 4.76	? ? ?0	?
? RNMN120700	? ?12.7	? ?12.7	??? 7.94	? ? ?0	?
? RCMX090700	? ?9.525	? ?12.7	? ? 7.94	? ? ?----	?
? RCMX120700	? ?12.7	? ?12.7	? ? 7.94	? ? ?----	?
? RCMX201200	? ?20	? ?20	? ? 12.7	? ? ?----	?

Material Worldia use premium PCBN blanks manufactured by world famous companies. Packaging?
The?solid?CBN inserts?are packaged in a plastic case/carton OEM/ODM service Our solid CBN insert can be customized upon your requirements. ? ? ? Worldia is a professional CBN insert manufacturer and supplier in China. We also offer diamond glass cutting tools, PCD/PCBN cutting tools, diamond die blanks, diamond saw blades and CVD diamond products. ?