Sumitomo - Полный каталог инструмента - 2016 EN
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Hardened SteelRecommended CBN Grades and Chipbreakers HaSrdteeenled
Grades New BNC2010 / New BNC2020 Insert
Selection
BNC2010: A grade for high-precision machining applicable for finishing requiring good surface roughness and dimensional accuracy.
Provides further improved wear resistance thanks to a newly developed CBN substrate coated with a TiCN layer.
Reduces flank wear and achieves excellent surface finish thanks to newly developed special stable multi-layered coating.
BNC2020: A general-purpose grade applicable to general hardened steel machining.
A newly developed tough CBN-substrate coated with a highly wear-resistant TiAlN layer.
Achieves more stable machining and longer tool life by employing a highly adhesive layer for high chipping resistance.
l BNC2010 Cutting Performance After cutting 8km l BNC2020 Cutting Performance
After
7 cutting:
Conventional Coated CBN
BNC2020 3km
6
Surface Roughness (µm)
5
4 Conventional coated CBN Conventional 1,8 times
Flank wear occurs coated CBN the
3km
Competitor‘s conventional
3 After cutting 8km coated CBN tool life
BNC2010
2
1 2,5km
0 1,0 2,0 3,0 4,0 BNC2010 0 2,5 5,0
Cutting Distance (km) Reduced flank wear Cutting Distance (km)
Work Material: 15CrMo5, 58-62HRC, Continuous Work Material: SCM415-5V, 58-62HRC, Interrupted
Insert: DNGA 150408 NC4 (BNC2010) Insert: CNGA 120412 NC4 (BNC2020)
Cutting Edge Treatment: S01225 Cutting Edge Treatment: S01225
Cutting Conditions: vc=160m/min, f=0,08mm/rev, ap=0,1mm, Wet Cutting Conditions: vc=130m/min, f=0,1mm/rev, ap=0,6mm, Dry
Application Examples New BNC2020
New BNC2010 Carburised Layer Removal for Sun Gears
BNC2020 achieves a longer tool life in high load cutting.
Continuous External Turning of Main Shaft
BNC2010 provides excellent wear resistance and achieves excellent surfaceOutput (pcs) / Cutting edge Output (pcs) / Cutting edge 300 1,5 x
roughness. tool life
100 200
2,3 x
tool life
50
100
Surface Roughness Ra=0,6µm 0 Conventional 0 Conventional
Coated CBN BNC2020 Coated CBN
BNC2010
Insert: DNGA 150408 NC4 (BNC2010) Insert: DNGA 120408 NC4 (BNC2020)
Cutting Conditions: vc=200m/min, f=0,10mm/rev, ap=0,35mm, Dry Cutting Conditions: vc=100m/min, f=0,15mm/rev, ap=0,5mm, Wet
Facing of CVJ Outer Race Output (pcs) / Cutting edge Interrupted Machining of CVJ Cage Window Output (pcs) / Cutting edge
BNC2010 with a WH type wiper insert maintains excellent surface finish for BNC2020 strong edge HS type provides stable performance in interrupted
an extended time. cutting.
700 1,8 x 300 1,5 x
tool life tool life
500 200
300 100
Surface Roughness Ra=1,6µm 0 0
BNC2010 Conventional BNC2020 Conventional
WH Type Coated CBN
Wiper Inserts Strong Edge Type Coated CBN
HS Type
Insert: CNGA 120412 NCWH2 (BNC2010) Insert:
Cutting Conditions: vc=150m/min, f=0,2mm/rev, ap=0,2mm, Dry Cutting Conditions: TNGA 160420 HSNC3 (BNC2020)
vc=120m/min, f=0,10mm/rev, ap=0,15mm, Dry
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