Общий каталог Sumitomo 2018 - 2019 - страница 491
Навигация
Общий каталог Sumitomo 2012
Каталог Sumitomo резьбонарезной инструмент
Каталог Sumitomo пластины с режущей кромкой-моноалмаз Sumicristal
Каталог Sumitomo инструмент для обработки канавок
Общий каталог Sumitomo 2019 - 2020
Каталог Sumitomo запасные части- Pages 3-6_CS6_EN_web
- A 1-20 insert selection EN_web
- B 1-14 grades_EN_web
- C01-17 inserts intro pages_EN_web
- C18-56 negative inserts_EN_web
- C57-86 positive inserts_EN_web
- D 1-46 tool holders_EN_web
- E 1-24 boring bars_EN_web
- F 1-48 grooving_thread tools_EN_web
- G 1-54 milling cutters_EN_web
- H 1-48 insert type endmills_EN_web
- J 1-24 new endmills_EN_web
- J 25-50 endmills_EN_web
- K 1-46 Multi-Drills_EN_web
- K 47-76 Multi-Drills_EN_web
- L 1-28 cbn_pcd grades_EN_web
- M 1-34 cbn_pcd inserts_EN_web
- M 35-56 SHM tools_EN_web
- N1-24 technical guidance_EN_web
- P 1-8 spare parts_neu_EN_web
- P 9-22 index_notes_EN_web
Uncoated SUMIBORON PM
BN7500 Sintered Compoment
Uncoated CBN grade for high precision and
high efficiency machining of powdered metal
- General Features
High density sintered material made of micro-grained CBN grains
provide excellent sharpness and wear resistance for high quality
surfaces in sintered alloy finishing.
Surface finish using the BN7500 Surface finish using previous CBN
The previous CBN left white blemishes on the finished surface whereas the BN7500 leaves a better, glossy surface finish.
- Characteristics l Excellent for finishing of powdered metal
Excellent machined surface finish and surface appearance. l Available with 5 different types of edge treatment for machining sintered alloys of any shape or hardness The LF type has a sharper edge designed specifically for machining sintered alloys with minimal
burr and improved machining precision.
The HS Type has a strengthened cutting edge for stable chipping resistance during interrupted
cutting and finishing.
- Cutting Surface Roughness Comparison Burr Comparison (Average Height)
Performance Previous CBN standard Previous CBN (Sharp cutting edge) BN7500
Standard
BN7500, LF
Excellent surface finish and stable tool life BN7500, LF 50% reduction in burr height Cutting Length (m) Cutting Length (m) Work material: Sintered ferrous alloy, SMF4040 equivalent Work material: Sintered ferrous alloy, SMF4040 equivalent (HRB70, Continuous cut) (HRB70, Continuous cut)
| Insert type: | CNGA 120408 LF-NU2 | Insert type: | CNGA 120408 LF-NU2 | |
| Cutting data: vc = 200 m/min, f = 0,1 mm/rev, doc = 0,1 mm, Wet | Cutting data: vc = 200 m/min, f = 0,1 mm/rev, doc = 0,1 mm, Wet | |||
| Feed and Burr Relationship | Recommended Edge Treatment |
Tooling LF type Standard LF No R Honing
Type Burr control New LEType New
LSType
Standard
R Honing Surface roughness
HSType
R Honing Breakage control Interruption Frequent
| The LF Type without negative land has a cutting edge sharpness superior to the | α | w R | |||
| standard type and can control burrs better. | Standard | 15° 0,12mm | w | ||
| No | |||||
| LF type | α = 0° | ||||
| Work material: | VVT Facing | LE type | (No neg. Land) | α | |
| Insert type: | TNGA 160404 NU3 | 15° 0,07mm | Yes | R | |
| LS type | |||||
| Cutting data: | v = 200 m/min, f = 0,1 mm/rev, d | = 0,1 mm, Wet HS type | 25° 0,05mm | Round honing cutting edge |
c oc