SPHU CBN is material sintered under ultra - high prssure and ultra - high temperature mainly containing CBN ( Cubic Boron Nitride ) with special bonding ceramic agent it has higher hardness and higher heat resistance than conventional tool materials. These features allow it to cut hard processing material such as hardened steel and high hardened cast iron.I addition, it has a lot of superior performance such as realization of longertool life in high sspeed finishing of cast iron.
Cubic boon nitride (CBN) inserts are available in Seven different grades. sintered metals, super alloys, hardened steel, and cast iron. Machining of heat treated, hardened steel with CBN provides high surface quality and eliminates, in many cases, grinding - a process that is normally required when machining steel with a hardness over 45 HRc. The use of CBN provides significant improvement in productivity and economy utilizing high speed machining and hard machining.
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