Polycrystalline cubic boron nitride (CBN), chemically resistant and stable at high temperatures up to 1.400°C
Boron nitride powder is the starting point for the production of CBN, which has been available since the end of the 1960s. It is produced under high pressure as well as at temperatures of over 1,500°C and specially adapted to the final application through many different substrates.
Today, CBN is considered the second hardest material after diamond cutting materials!
The applications of CBN are in the automotive industry, aerospace, tool and mould making and mechanical engineering. The wide spectrum as a cutting and abrasive material includes hardened steels, cast iron, chilled cast iron, sintered materials, stellites, nickel and cobalt-based superalloys. In many applications, cubic boron nitride is preferred to diamond cutting materials because it is absolutely stable in air at temperatures up to 1,400°C. Diamond, on the other hand. Diamond, on the other hand, begins to decompose at a temperature of approx. 750°C.
Compared to PCD, CBN is also characterized by its chemical resistance to ferrous materials.
Our CBN grades for machining hardened steels up to 72 HRC:
H25 designed for the smooth cut
H35 is new in our programme and is developed
for the smooth to slightly interrupted cut
H45 and the H65 are the all-rounders for the smooth to heavily interrupted cut
H85 was specially developed for the heavily interrupted cut
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