Indexable brazed pcbn insert BN-K20 milling and boring engine block from Halnn Superhard

Engine Block, as the base of the engine, it required high on the precision and surface quality, for example, side Flatness need within0.03mm, Cylinder roundness will be within0.004mm, and the Verticality will be within0.03mm, Surface Roughness require Ra1.6. With the increasing competition on this industry, traditional cutting tools(carbide insert, ceramic cutters and coating carbide insert) can't satisfy all the requirements . Many manufacturers can only use international brand (Seco, Sandvik, Sumitomo,ect) cbn insert, but it costs so high. So manufacturers are searching other cutting tools which can replace international cbn inserts, and reduce the tool costs.

CBN Insert, the hardness is only second to diamond tools, has stable cutting performance, long tool life, and has been widely used. CBN Insert are mainly used for milling and boring engine block with gray cast iron materials. Specific for different process, we can choose different cbn grade, and can obtain best performance.

Specific for milling the endsurface and face of the engine, Halnn recommend BN-S300 solid cbn insert, it not only can be used for large margin in roughing process, but also can meet the roughness Ra1.6 in finishing process.

Specific for boring process of engine, Halnn recommend brazing Pcbn insert BNK30 and BN-K20, BNK30 is one new materials for machining gray cast iron parts in high speed condition, the cutting speed can reach 200m/min, it has been widely used in engine processing.

When milling engine block with high cutting speed, you can check our web: halnncbn.com first, then contact with us , we will offer you the most widely cbn inserts grades and models. And offer customized service. Any problems, please leave message through my online contact way: skype:cbn_inserts_angels, Wechat:Halnntools