BN-K20 and BNK30 cbn insert milling engine block with FC250 gray cast iron materials

Engine Block is one of the most important parts of engine, and is the base of the engine. Engine Block is the typical case parts, and it usually uses milling process machining all surface. And the engine block usually require high on the product quality, and surface roughness, ect. So it requires high on the cutting tools, which will need high cutting speed, high precision and high efficiency.

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.

 The application case of Halnn superhard cbn insert BN-S300 milling engine block

Machining Materials: Gray Cast Iron

Process: Finishing Process

Insert Model: BN-S300 SNEN090308ENS

Cutting Data: Vc=1700m/min, Fz=0.12mm/r,ap=0.3mm

Machining Process: Dry Cutting

The performance:

When milling engine block end surface, if the margin is large and the cutting speed is high, the cutting tools will be easily chipping or wear rapidly. You can contact with us  We can offer you professional service. Online contact way as follows: skype:cbn_inserts_angels, Wechat:Halnntools