Общий каталог Sumitomo 2019 - 2020 - страница 21
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Hardened Steel Chipbreaker and Grade Selection Guide for Turning
Hardened Steel
Grades BNC2010 / BNC2020 / BN1000 / BN2000
BNC2010 : For high-precision finishing requiring good surface roughness and dimensional tolerance. Maintains excellent surface roughness thanks to coating with high boundary wear resistance and CBN substrate. BNC2020 : General-purpose grade suitable for typical hardened steel machining applications. Achieves long tool life thanks to highly wear-resistant, highly adhesive coating and tough CBN substrate.
BN1000 : For high-speed machining, BN1000 provides the highest wear resistance of all uncoated BNC2010 / BNC2020
SUMIBORON grades, improving fracture resistance while maintaining an emphasis on wear resistance. A
BN2000 : General-purpose grade for general hardened steel machining with a high degree of fracture and wear resistance.
Performance
BNC2010 BNC2020
- Continuous Cutting of Hardened Steel
- Interrupted Cutting of Hardened Steel
Stable cutting
7 After Cutting 8km After Cutting 5km
Conventional Tool 6 ■ BNC2020 5
After Cutting 3km 4 Conventional Tool
Boundary wear occurs Conventional
| 3 | After Cutting 8km | Tool | |
| ●BNC2010 |
| 2 | ● | After Cutting 2.5km | ||
| ●■ | Competitor's | |||
| 1 | Product A | |||
| 0 | BNC2010 |
2 4 6 8 0 2.5 5.0
Reduces boundary wear Cutting Distance (km) Tool Life (km) Work Material: SCM415 58-62HRC (Continuous) Work Material: SCM415-5V 58-62HRC (Interrupted Cutting) Insert: 4NC-DNGA150408 Cutting Edge Treatment: S01225 Insert: 4NC-CNGA120412 Cutting Edge Treatment: S01225
Cutting Conditions: v =160m/min, f=0.08mm/rev, a =0.1mm Wet Cutting Conditions: v =130m/min, f=0.1mm/rev, a =0.6mm Dry
c p c p
BN1000 / BN2000
- Wear Resistance (Continuous Cutting)
- Chipping Resistance (Interrupted Cutting)
(Conventional tool A as 100%) 0.25
Breakage Able to BN2000
Competitor's Product B Unable to Continue 1.4
0.250.20 Continue BN2000 Approx. times that of conventional tools!
| Breakage | Able to | BN2000 | |
| Competitor's Product B | Unable to Continue |
0.200.15 Breakage caused by crater wear Continue
BN2000 Conventional 0.150.10 Competitor's Breakage caused by crater wear Product B Tool A BN2000
0.100.05 Competitor's Product B Fracture life improved!
Competitor's
0.05 Fracture life improved! 0 Product D
| 2 | 4 | 6 | 8 | 10 | ||
| 0 | Cutting Distance (km) | |||||
| 2 | 4 | 6 | 8 | 10 |
| Work Material: SCM415H Round Bar (58-62HRC)Cutting Distance (km) | BN1000 | Approx. double that of conventional tools! |
| Insert: 2NU-CNGA120408 | ||
| Cutting Conditions: 0.16v =100m/min, f=0.1mm/rev, a =0.2mm Dry |
| c | p | Competitor's | Conventional | |
| Competitor's Product C |
| 0.16 | Product C | Tool B | ||
| 0.12 | Competitor's Product C | Competitor's BN1000 | ||
| Product C | ||||
| Unacceptable Amount of Wear | BN1000 | Competitor's | ||
| 0.12 | ||||
| 0.08 | BN1000 | Product E | ||
| Unacceptable Amount of Wear | ||||
| 0.08 | BN1000 | |||
| 0.04 |
| Excellent wear resistance! | 0 | 50 | 100 | 150 | ||
| 0.04 | ||||||
| 0 | Tool Life Ratio (%) |
| 1 | 2Excellent wear resistance! | 3 | ||
| 0 Cutting Distance (km) | ||||
| 1 | 2 | 3 | ||
| Cutting Distance (km) | ||||
| Work Material: SUJ2 Round Bar (62HRC) | Work Material: SCM415H 8V Grooved (58-62HRC) | |||
| Insert: 2NU-CNGA120408 | Insert: 2NU-CNGA120408 | |||
| Cutting Conditions: v =150m/min, f=0.1mm/rev, a =0.2mm Dry | Cutting Conditions: v =150m/min, f=0.1mm/rev, a =0.2mm Dry |
c p c p