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

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

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.

Specific for engine block, there are 3 materials, BN-S300, BN-K20 and BNK30 CBN Grade, BN-S300 belong to solid cbn insert, the cubic boron nitride content can reach 91%, the hardness can arrive HV3400-HV3600, and it can realize rough milling, fine milling engine block surface.

BN-K20 and BNK30 belong to brazing pcbn insert, it includes carbide body and cbn tips, usually used for fine boring engine to ensure the surface roughness and other requirements.

When milling engine block with high cutting speed, you can check our web: first, then contact with us halnntools@gmail.com, 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, Whatsapp:+8618695866134, Wechat:Halnntools