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PCBN is shortened from Polycrystalline Cubic Boron Nitride. PCBN inserts are made from PCBN as row material, through cutting, brazing, grinding and production processes. PCBN inserts are always used for finish and min-finish machining ferrous metal, including cast iron, hardened steel and other hard wearable material. PCBN inserts always perform perfectly when machining the above material. Using PCBN inserts, you can get a high degree of finish of the workpiece surface, even can achieve that replacing grinding with turning. Meanwhile, PCBN inserts have much longer service life than normal carbide cutting tools, so that PCBN tools can cut down the production cost distinctly. PCBN tools can stand quite high cutting speed with the stable performance therefore improving production efficiency. please visit http://www.fullshewn.com/ for more information