Coated CBN - SUMIBORON for Hardened Steel Machining BNC2010 / BNC2020
Hardened Steel
■ Cutting Performance
● BNC2010
● BNC2020
After Cutting 8km
7
After Cutting 5km
Conventional Coated CBN
■
6
BNC2020
5
After Cutting 3km
L
Conventional Coated CBN
4
Notch wear occurs
■
●
3
■
After Cutting 8km
●
BNC2010
●
2
After Cutting 2.5km
Competitor's Coated CBN
■ ●
1
0
40 Time in Cut (minutes) 20
0
12
24
36
48
Reduces notch wear
Time in Cut (minutes)
Part Material: 15CrMo Alloy Structural Steel 58-62HRC (Interrupted Cutting) Tool Cat. No.: 4NC-CNGA433 Cutting Edge Treatment: S01225 Cutting Conditions: v c = 430 SFM, f = .0039 IPR, a p = .0236” Dry
Part Material: Low Carbon Alloy Steel 58-62HRC (Continuous) Tool Cat. No.: 4NC-DNGA432 Cutting Edge Treatment: S01225 Cutting Conditions: v c = 530 SFM, f = .0031 IPR, a p = .0039” Wet
■ Application Examples
BNC2010
BNC2020
[Carburised Layer Removal for Sun Gear] (58 to 60 HRC) BNC2020 achieves long tool life in high load cutting.
[Continuous External Turning of Main Shaft] (58 to 60 HRC)
BNC2010 provides excellent wear resistance and achieves excellent surface roughness.
100
300
Tool life 1.5 x
Tool life 2.3 x
200
50
100
0
0
Surface Roughness Ra = 0.6μm
BNC2010 Conventional Coated CBN
BNC2020 Conventional Coated CBN
Tool Cat. No.: 4NC-CNGA432 (BNC2020) Cutting Conditions: v c = 330 SFM,
Tool Cat. No.: 4NC-DNGA432 (BNC2010) Cutting Conditions: v c = 660 SFM,
f = .0039 IPR, a
f = .0059 IPR, a
p = .0138” Dry
p = .0197” Wet
[Facing of CVJ Outer Race] (58 to 60 HRC) BNC2010 with a WH type wiper insert maintains excellent surface roughness for a long time.
[Interrupted Machining of CVJ Cage Window] (58 to 60 HRC) BNC2020 strong edge HS type provides stable performance in interrupted cutting.
700
300
Tool life 1.5 x
Tool life 1.8 x
500
200
300
100
0
0
Conventional Coated CBN
Conventional Coated CBN
BNC2010 WH Type (Wiper Insert)
BNC2020 HS Type (Strong edge type)
Surface Roughness Rz = 1.6μm
Tool Cat. No.: 6NC-TNGA333HS (BNC2020) Cutting Conditions: v c = 400 SFM,
Tool Cat. No.: 4NC-CNGA433WH (BNC2010) Cutting Conditions: v c = 500 SFM,
f = .0079 IPR, a
f = .0039 IPR, a
p = .0079” Dry
p = .0059” Dry
L13
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