Zhengzhou Halnn Superhard Materials Co., Ltd
Zhengzhou Halnn Superhard Materials Co., Ltd
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CNC Turning Tools Hard Turning Inserts CBN Inserts For Cutting Hard Metal
1. About Hard Turning and CBN
Hard Turning refers to the process of cutting hard metal with hardness between HRC58~70.
Hard Turning problems can be solved easily with cbn inserts in current times. Halnn offer a wide range of cbn grades and all iso models and customized models.
Cubic boron nitride (CBN) is an artifically synthesized material exceeded with hardness only second to diamond. The difference with diamond is that cbn is stable for cutting high hardness metal or other supply alloy mateirals in high temperature (up to 1000 degree)
2.Halnn CBN Grade for hard turning
| Insert Grade | Suited Materials | Machining Type | Typical Application |
| BN-K1 | Chilled Cast Iron, Hi-Ni-Cr Cast Iron and High harness alloy cast iron | Roughing | Alloy Cast Iron, Slurry Pump, Wear resistant castings |
| BN-S10 | High Speed Steel | Roughing | HSS Rolls |
| BN-S20 | Hardened Steel, Heat and abrasive resistant steel, High manganese steel | Roughing, Semi-Finishing | HSS Rolls, Ball Screw, Wind Power Bearings |
| BN-S200 | Hardened Steel,Superalloy | Finishing | Wind Power Bearings |
| BN-S300 | Gray Cast Iron | Roughing, Finishing | Brake Disc, Cast Iron Engine,Gearbox, Cylinder Liner |
| BN-H11 | Hardened Steel | Semi-Finishing, Finishing | Bearings, Gears, Gear Shaft, Hardened Mold |
| BN-H20 | Hardened steel, other materials of difficult to machine | Semi-Finishing, Finishing | Hardened Steel Gears, Mold,ect |
| BN-K20 | Gray Cast Iron | Semi-Finishing, Finishing | Brake Disc, Cast Iron Engine,Gearbox |
| BNK30 | Gray cast iron, Iron based alloy | Semi-Finishing, Finishing | Brake Disc, Brake Drum, Cast Iron Engine, Gearbox |
| BN-H05 | Hardened Steel | Finishing | Gears,Gear Shaft, Bearings |
| BN-H10 | Hardened Steel, high strength cast iron | Finishing | Bearings, Gears, Gear Shaft, High hardness component |
| BN-H21 | Hardened Steel | Finishing | Bearings, Gears, Gear Shaft,Mold,ect. |
| BN-K10 | Gray Cast Iron, Powder Metallurgical | Finishing | Valve seat ring; Engine cylinder bore; Powder Metallurgy parts |
3. CBN Cutting Parameters for Reference
| Machining Materials | Process | Cutting Parameters | Recommend CBN Grade | ||
| Vc (m/min) | ap (mm) | Fr (mm/r) | |||
| High Hardness Cast Iron (HRC35-68) | Roughing | 35-120 | 1-10 | 0.15-1.0 | BN-K1 |
| Finishing | 60-200 | ≤1 | 0.05-0.35 | BN-K10,BN-H10 | |
| Hardened Steel (≥HRC45) | Roughing | 50-150 | 1-10 | 0.1-0.5 | BN-S10,BN-S20 |
| Finishing | 90-250 | ≤1 | 0.05-0.35 | BN-H05,BN-H10,BN-H21,BN-H20,BN-H11,BN-S200 | |
| Gray Cast Iron | Roughing | 400-1200 | 1-10 | 0.2-1.0 | BN-S30,BN-S300 |
| Finishing | 600-2000 | ≤1 | 0.05-0.3 | BNK30,BN-K10,BN-K20 | |
4. Halnn CBN Inserts Advantages
Halnn CBN Products include solid cbn inserts, pcbn inserts, brazed pcbn inserts, coating pcbn inserts, wiper pcbn inserts and chipbreaker pcbn inserts. we can not only offer iso cbn inserts, but also offer all not-standard cbn products as customer's requirements.
