CBN for Cast Iron / Powdered Metal Machining BN7125 Cast Iron Sintered Alloy /BN7115 Sintered Alloy
¢ Cutting Performance (Cast Iron)
D BN7125 Interrupted Cutting (Fracture Resistance)
D BN7125 Milling (Fracture Resistance)
Fracture Unable to continue
.012
No Fracture
BN7125
.010
Able to continue
BN7125
Competitor's CBN
.008
Able to continue
L
.006
Conventional CBN
Fracture Fracture
.004
Fracture
.002
0
20
40
60
80
100
1,000 2,000 3,000 4,000 5,000 6,000
0
Chip Evacuation Rate (cm 3 )
No. of Passes until Tool Fracture
Work Material : FC250 (Pearlite) Tool : FMU4080R, Insert: SNEW1203ADTR Cutting Conditions : vc = 490 SFM, fz = .005 IPR, ap = .012”, Remainder Wet
Work Material Tool Cat. No.
: FC250 with 6 grooves
: 2NU-CNGA120408 Cutting Conditions: vc = 2460 SFM, f = .006 IPR, ap = .008”, Wet
D BN7115 Continuous Cutting (Surface Roughness)
D BN7115 Continuous Cutting (Wear Resistance)
Conventional CBN
1.0
.008
█
Conventional CBN
0.8
BN7115
█
.006
50µm
D
█
0.6
BN7115
█ D
Conventional CBN
█
█
.004
D
█ D
0.4
D
D
D
1.4 times tool life at similar surface roughness
█ D
1.5 times better wear resistance
.002
0.2
0 █ D
50µm
0
0.62
1.24
1.86
2.48
3.10
0.62
1.24
1.86
2.48
3.10
BN7115
Cutting Distance (miles)
Cutting Distance (miles)
Maintains sharp cutting edge
Work Material Tool Cat. No.
: Sintered Alloy F-08C2 equivalent (150HV)
Work Material Tool Cat. No.
: Sintered Alloy F-08C2 equivalent (150HV)
: 2NU-CNGA120408 Cutting Conditions: vc = 660 SFM, f = .004 IPR, ap = .008”, Wet
: 2NU-CNGA120408 Cutting Conditions: vc = 660 SFM, f = .004 IPR, ap = .008”, Wet
D BN7125 Continuous Cutting (Surface Roughness)
D BN7125 Interrupted Cutting (Fracture Resistance)
No Fracture
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Conventional CBN
BN7125
BN7125
BN7125 Able to continue
Fracture
Conventional CBN
Fracture
Fracture
Conventional CBN Fracture
0 100 200 300 400
0 0.62 1.24 1.86 2.48 3.10 3.72 4.34
Cutting Distance (miles)
No. of Workpieces (Times)
Work Material Tool Cat. No.
: Sintered Alloy F-08C2 equivalent (150HV)
Work Material Tool Cat. No.
: Hardened Sintered Alloy FLA-07C2M equivalent (500HV)
: 2NU-CNGA120408 Cutting Conditions: vc = 660 SFM, f = .004 IPR, ap = .008”, Wet
: 3NU-TNGA160404LE Cutting Conditions: vc = 820 SFM, f = .003 IPR, ap = .020”, Wet
L19
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