Zhengzhou Halnn Superhard Materials Co., Ltd
Zhengzhou Halnn Superhard Materials Co., Ltd
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PCBN Inserts CNC Indexable Inserts For Cutting Ferrous Metal Cast Iron And Hardened Steel
1. Brazed PCBN Inserts Grade for machining ferrous metal
| ISO Grade | Insert Grade | Suited Materials | Machining Type | Typical Application | Insert Image |
| H | BN-H11 | Hardened Steel | Semi-Finishing, Finishing | Bearings, Gears, Gear Shaft, Hardened Mold |  |
| BN-H20 | Hardened steel, other hard materials | Semi-Finishing, Finishing | Hardened Steel Gears, Mold,ect | ||
| K | 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 | ||
| K | BN-K10 | Gray Cast Iron, Powder Metallurgical | Finishing | Valve seat ring; Engine cylinder bore; Powder Metallurgy parts | |
| H | 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. |
2. Advantages of PCBN Inserts
Description of PCBN material:
Cubic boron nitride is the second hardest material in the world invented successfully in 1957; the hardness of CBN’s single crystal is HV8000-9000 while the hardness of PCBN is HV 2500—5000, so its considerably better abrasive resistance than tungsten carbide and ceramics. With a higher ability of oxidation resistance within 1000℃, CBN will do not have any chemical reaction together with ferrous material in 1200--1300℃. So it is unique for CBN material dry cutting ferrous materials. The principal application areas for CBN cutting tools are hardened steels, cast irons and sintered irons as well as powder metallurgy components.
Features and Benefits of PCBN:
a. Excellent surface finish
b. High speed turning, high performance
c. More flexibility in machining
d. Less investment in machines
e. Dry Cutting, No required coolant
3. Cutting Condition and Cutting Parameters of PCBN Inserts for reference
CBN Cutting Condition
| CBN Content | Halnn CBN | Cutting Depth | Condition |
| High Content | BNK30 | ≤1.5mm | Continuous |
| BN-K20 | ≤0.5mm | Continuous | |
| BN-K10 | ≤0.5mm | Continuous | |
| Low Content | BN-H20 | ≤1mm | Semi-Interrupt |
| BN-H11 | ≤1mm | Continuous | |
| BN-H05/ BN-H05 C25 | ≤0.2mm |
Continuous | |
| BN-H10/ BN-H10 C25 | ≤0.5mm | Continuous~ Semi- Interrupt | |
| BN-H21/ BN-H21 C25 | ≤0.5mm | Semi-Interrupt ~ Heavy Interrupt |
CBN Cutting Parameters for Reference
| Machining Materials |
Process | Cutting Speed Vc(m/min) | Cutting Depth ap (mm) |
Feed Rate Fr (mm/r) | Recommend CBN Grade |
| 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. Some Common Models of CNC Indexable PCBN Inserts
| | | |
| CCGW | CNGA | DNGA | TNGA |
| | | |
5. Common Application as follows:
CNC Indexable PCBN Inserts are mostly used for machining automotive parts, such as brake drum, cylinder, engine block, brake disc,ect.