Finish Boring Cast Iron Cylinder head with BNK30 SNEN0904ENS CBN indexable Insert full form
1. Halnn Tools BNK30 SNEN0904ENS CBN indexable Insert Rough Machining the engine block
Engine Block, usually is made of gray cast iron, which has good strength, Stiffness
and wear resistance. And as the base of the engine, the engine block require high on the surface quality, for example, both side Flatness need within0.03mm, Cylinder roundness will be within0.004mm, and the Verticality will be within0.03mm, Surface Roughness require Ra1.6.
In order to satisfy all above requirements, the cutting tools need be used for high speed, and has high precision and high efficiency. It also can be used for milling engine block with large working allowance .
2. Why we Choose Halnn Tools BNK30 SNEN0904ENS CBN insertsCBN indexable Insert ?
Specific for milling and boring engine block with cast iron materials, Halnn launched many cbn grades, not only can realize high speed milling process, but also can reduce the tool costs.
- Milling Process: Halnn recommend Solid CBN Insert BN-S300, obvious process efficiency, stable cutting performance, can replace Seco and other brand CBN.
- Boring Process: We recommend BN-S300,BNK30 and BN-K20 Brazed PCBN Insert, it has stable performance and has been widely used in Engine Industry.
- Chamfering process: It can be made depending on the customers’ requirements, the cutting performance will be stable .
3. BN-S300 CBN inserts Characteristics
| Insert Grade | Binder | CBN Content(%) | Granularity | Hardness(HV) |
| BN-S300 | AL,TIC | 97 | 4—6 | 3400—3600 |
| BN-K10 | Si,Co | 95 | ≤ 2 | 3300—3500 |
| BN-K20 | AL | 95 | 2—4 | 3400—3600 |
| BNK30 | Si,TIC | 97 | 2—4 | 3400—3600 |
4.Detailed Data of RCMO CBN inserts
 |
| Type | Dimension | Grades |
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BN-S200 | BN-S30 | BNK30 |
| SNEN0904ENS | 9 | 9.525 | 4.76 | 0.8 | ● | ● | ◎ |
| SNEN1204ENS | 12 | 12.7 | 4.76 | 1.2 | ● | ● | ◎ |
| SNEN1207ENS | 12 | 12.7 | 7.94 | 1.2 | ● | ● | ◎ |
| SNEN120712 | 12 | 12.7 | 7.94 | 1.2 | ● | ● | ◎ |
| SNEN19T6ENS | 19 | 19.05 | 6.8 | 1.6 | ● | ● | ◎ |
5.Pictures of Halnn Tools Solid CBN inserts
6.Application Case
The application case of Halnn Tools CBN insertS BN-S300 milling Engine block
 | Materials | Boron alloy cast iron cylinder liner |
| Process | Finishing Process |
| Insert Model | BNK30 SNEN0904ENS |
| Cutting Data | Vc=850m/min, Fz=0.2mm/r,ap=0.3mm |
| Insert Materials | Vc(m/min) | Tool Life(pieces/blade) | Effectiveness |
| BNK30 | 850m/min | 120 | Doubled the efficiency of other companies |
| Other company CBN inserts | 400m/min | 25 | No |
7.Our Product
Product Tags:
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SNEN0904ENS Indexable Solid CBN Inserts Full Form Finish Boring Cast Iron Cylinder Head Images
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