Каталог Sumitomo пластины с кубическим нитридом бора Sumiboron - страница 7
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Каталог Sumitomo резьбонарезной инструмент
Каталог Sumitomo инструмент для отрезки
Каталог Sumitomo инструмент для обработки канавок
Каталог Sumitomo модульные фрезерные системы
Каталог Sumitomo пластины с алмазными вставками Sumidia
Каталог Sumitomo пластины с режущей кромкой-моноалмаз Sumicristal- L001
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K Guidance for SUMIBORON Grades
- Advantages of using CBN
CAST IRON MACHINING Following chart shows advantages of using CBN in cast iron machining compared with
conventional tool, such as carbide, cermet or ceramics.
SUMIBORON has longer tool life than conventional tools in high speed machining and brings
higher efficiency and superior precision.
| High Speed Machining | High Speed Machining | High Precision Machining | ||
| Gray Cast Iron | Ductile Cast Iron | |||
| BNS800 | 500 |
| 1,000 | BN7000 | Ceramic | ||
| BNX10 | ||||
| BN500 | BNS800 | Coated carbide |
BN7000 Cermet BNC500 BNC500 500 200
Ceramic BN7000
| 200 | Ceramic | Coated carbide |
| Coated carbide | Cermet | |
| Cermet |
| 1 | 10 | 20 | 1 | 10 | 0.4 | 0.8 | 1.6 | 3.2 | |
| Tool Life | Tool Life | Good← | Surface Roughness Ra (μm) |
- Recommended Grade
| Grade | Binder | CBN Content（%） | Grain Size（μm） | Hardness（GPa） | TRS（GPa） | Coating | Thickness（μm） | Characteristics |
| BNS800 | AI Compound | 85 to 90 | 8 | 39 to 42 | 0.95 to 1.10 | Grade with 100% solid CBN structure and excellent thermal shock resistance. | ||
| Uncoated BN7000 | Co Compound | 90 to 95 | 2 | 41 to 44 | 1.30 to 1.40 | Exhibits improved wear and fracture resistance in cutting of cast iron and exotic alloys. | ||
| BN500 | TiC | 65 to 70 | 6 | 32 to 34 | 1.00 to 1.10 | Optimized for cast iron cutting. Provides superior wear and fracture resistance. | ||
| Coated BNC500 (Ductile Cast Iron) | TiC | 60 to 65 | 4 | 32 to 34 | 1.00 to 1.10 | TiAIN | 2 | Suitable for machining of hard-to-cut cast iron thanks to the highly wear- resistant substrate and coating. |
* Refer to pages L9 and L10 for machining of sintered components, rolls, hard facing alloys and heat resistive alloys.
Application Range <Gray Cast Iron> <Ductile Cast Iron>
Finishing 2,000 500 Roughing 1,500 400
BN7000 BNC500 1,000 300
BNS800 L
500 200 BN500 AC405K / AC415K / AC420K
BN7000
0 0
1.0 2.0 3.0 4.0 0.1 0.2 0.3 0.4 0.5
Depth of Cut (mm) Depth of Cut (mm)
<Special Cast Iron>
| Work | Hardness (HB) | Structure | Examples | 100 200 Cutting | 300 350 Speed (m/min | 500 400 ) |
| Ni-resist Cast Iron | 150 200 to | Austenite | Piston ring | BNC5 | 00 | |
| High-Cr Cast Iron | to 250 350 | Austenite | Pump parts | BNS | 800 | |
| FCV (CGI) | to 400 580 | Pearlite | Engine block Cylinder head Disc brakes | BNC500 |