Zhengzhou Halnn Superhard Materials Co., Ltd
Zhengzhou Halnn Superhard Materials Co., Ltd
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CNMN/SNMN Solid CBN Inserts High Speed Machining Cast Iron Brake Disc/Brake Drum
1. Halnn CBN Grade for machining Grey Cast iron
| Insert Grade | Suited Materials | Machining Type | Typical Application |
| BN-S300 | Gray Cast Iron | Roughing,Finishing | Brake Disc,Cast Iron Engine,Gearbox, Cylinder Liner |
| BN-K20 | Semi-Finishing, Finishing | ||
| BNK30 | Semi-Finishing,Finishing |
2. BN-S300/BN-K20/BNK30 CBN Cutting Conditions
| CBN Content | Halnn CBN Grade | Cutting Depth | Cutting Condition |
| 97% | BN-S300 | ≤2mm | Continuous |
| 97% | BNK30/BN-K20 | ≤1.5mm | Continuous |
3. Common Models for machining brake disc and brake drum
| SNMN/SNGN Solid CBN Inserts
| ||||||||
Type | Dimension |
Standard Chamfer | Grades |
Corresponding tool holder | ||||
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BNK30 | BN-S300 | |||
| SNMN090304 | 9 | 9.525 | 3.18 | 0.4 | S01020 S01025 S02020 S02030 S05020 S10020 | ● | ● | CSDNN CSSNR/L CSKNR/L CSRNR/L CSXNR/L S25T-CSKNR/L |
| SNMN090308 | 9 | 9.525 | 3.18 | 0.8 | ● | ● | ||
| SNMN090312 | 9 | 9.525 | 3.18 | 1.2 | ● | ● | ||
| SNMN090404 | 9 | 9.525 | 4.76 | 0.4 | ● | ● | ||
| SNMN090408 | 9 | 9.525 | 4.76 | 0.8 | ● | ● | ||
| SNMN090412 | 9 | 9.525 | 4.76 | 1.2 | ● | ● | ||
| SNMN120404 | 12 | 12.7 | 4.76 | 0.4 | ● | ● | ||
| SNMN120408 | 12 | 12.7 | 4.76 | 0.8 | ● | ● | ||
| SNMN120412 | 12 | 12.7 | 4.76 | 1.2 | ● | ● | ||
| SNMN120712 | 12 | 12.7 | 7.94 | 1.2 | ● | ● | ||
| SNMN120716 | 12 | 12.7 | 7.94 | 1.6 | ● | ● | ||
| SNMN150716 | 15 | 15.875 | 7.94 | 1.6 | ● | ● | ||
| SNMN201020 | 20 | 20 | 10 | 2.0 | ● | ● | ||
| CNMN/CNGN Solid CBN Inserts
| ||||||||
Type | Dimension |
Standard Chamfer | Grades |
Corresponding tool holder | ||||
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BN-S300 | BNK30 | |||
| CNMN090404 | 9 | 9.525 | 4.76 | 0.4 | S01020 S01025 S02020 S02030 S02530 S03020 | ◎ | ◎ | CCLNR/L S25T-CCLNR/L |
| CNMN090408 | 9 | 9.525 | 4.76 | 0.8 | ◎ | ◎ | ||
| CNMN090412 | 9 | 9.525 | 4.76 | 1.2 | ◎ | ◎ | ||
| CNMN120404 | 12 | 12.7 | 4.76 | 0.4 | ● | ● | ||
| CNMN120408 | 12 | 12.7 | 4.76 | 0.8 | ● | ● | ||
| CNMN120412 | 12 | 12.7 | 4.76 | 1.2 | ● | ● | ||
| CNMN120416 | 12 | 12.7 | 4.76 | 1.6 | ● | ● | ||
| CNMN120704 | 12 | 12.7 | 7.94 | 0.4 | ● | ● | ||
| CNMN120708 | 12 | 12.7 | 7.94 | 0.8 | ● | ● | ||
| CNMN120712 | 12 | 12.7 | 7.94 | 1.2 | ● | ● | ||
| CNMN120716 | 12 | 12.7 | 7.94 | 1.6 | ● | ● | ||
4.Application Case
| BN-S300 CNMN1207 solid cbn inserts finish machining gray cast iron brake disc | |||
| Component Materials | FC250 (GG250),HB170~210 | ||
| Selected Halnn CBN Inserts | BN-S300 CNMN120712 | ||
| Cutting Condition | ap=2mm,Fr=0.55mm/r, Vc=500m/min | ||
| Testing Performance | |||
| Insert Materials | Cutting Speeds | Tool Life/blade | Efficiency |
| Halnn BN-S300 | 500m/min | 200 pcs | Improved 1.8 times |
| Carbide Insert | 180 | 30 pcs | ...... |
5.Typical Application
Normally for machining gray cast iron component, such as brake disc, brake drum, Halnn researched BN-S300,BN-K20 and BNK30 Solid CBN Inserts. The following is the cnc machine tools for machining gray cast iron brake disc.
