Uncoated CBN for Hardened Steel Machining BN1000 / BN2000
Hardened Steel
■ Cutting Performance ● BN1000
● BN1000 / BN2000
Chipping Resistance (Interrupted Cutting)
Wear Resistance (Continuous Cutting) .0064 .0056 .0048
Competitor's CBN
BN1000
Approx. 2 times that of conventional tools
BN1000
.0032 .0040 .0016 .0008 .0024
Greatly improved fracture resistance while also emphasizing wear resistance
Conventional CBN (1)
L
0
7
14
21
Time in Cut (minutes) Part Material: High Carbon Steel Round Bar (58 to 62HRC) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c = 500 SFM, f = .0039 IPR, a p = .0079” Dry
Competitor's CBN (1)
Approx. 1.4 times that of conventional tools BN2000
● BN2000
Excellent fracture resistance compared with conventional tools
Wear Resistance (Continuous Cutting) .0099
Conventional CBN (2)
Breakage - Cannot Continue
Conventional CBN
BN2000
.0079
Able to Continue
.0059
Competitor's CBN (2)
.0039
.0019
0
50
100
150
Tool Life Comparison (Conventional CBN (2) = 100%)
0
20
40
60
80
100
Time in Cut (minutes) Part Material: Chromium Molybdenum Steel Round Bar (58 to 62HRC) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c = 330 SFM, f = .0039 IPR, a p = .0079” Dry
Part Material: 15CrMo Alloy Structural Steel 8V Grooved (58-62HRC) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c = 400 SFM, f = .0039 IPR, a p = .0079” Dry
■ Machining Precision
● BN1000
● BN2000
Dimensional Tolerance Comparison (Continuous Cutting)
Surface Roughness Comparison (Continuous Cutting)
Competitor's CBN
10
4
Competitor's CBN
8
Conventional CBN
3
6
BN1000
2
BN2000
4
1
2
0
5
10
15
20
0
.62
1.25 1.86 2.50 3.10 3.75 4.38
Part Material: Chromium Molybdenum Steel ø5.12” O.D. (58 to 62 HRC) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c = 660 SFM, f = .0039 IPR, a p = .0039” Wet Time in Cut (minutes)
Work Material: Chromium Molybdenum Steel Round Bar (58 to 62HRC) Tool Cat. No.: 2NU-CNGA432 Cutting Conditions: v c = 330 SFM, f = .0031 IPR, a p = .0079” Dry Cutting Distance (miles)
L17
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