CBN for Cast Iron / Powdered Metal Machining BN7125 Cast Iron Sintered Alloy /BN7115 Sintered Alloy
¢ Features Improved wear resistance through high CBN content. Further, with improved CBN particle/binder boundary strength due to the special binder and improved binding strength between CBN particles thanks to our proprietary sintering process, excellent fracture resistance is achieved. Provides stable performance for high-speed finishing of cast iron, sintered alloy and exotic alloys.
L
D BN7125 General-purpose Grade for Cast Iron/Sintered Alloy Machining Achieves high-efficiency machining of sintered alloy with a standard + 3 types of cutting edge variations Exhibits good thermal crack resistance in high-speed machining of cast iron Also supports machining of difficult-to-cut materials such as rolls, high speed steel and heat-resistant alloys D BN7115 Edge sharpness in sintered alloy machining is excellent, suppressing burrs and tearing
¢ Lineup
¢ Application Range
D Cast Iron
D Sintered Alloy
K
Sintered Alloy
Finishing region
Finishing region
Roughing region
Roughing region
990
8200
6560
BN7125 BN7000
660
4920
BN7000 BN7115 BN7125 BN7000
BNC8115 BNS8125
3280
330
1640
BN500
0
0 .004 .008 .012 .016 .020 .012 .008 .006 .010 .004 .002
Depth of Cut ap (Inch) Feed Rate f (IPR)
.16
.04
.08 .12 Depth of Cut ap (Inch)
¢ Recommended Cutting Conditions
K
Sintered Alloy
D Cast Iron
D Sintered Alloy
Recommended Cutting Conditions
Recommended Cutting Conditions Cutting Speed vc (SFM) Feed Rate f (IPR)
Depth of Cut ap (Inch) Min. - Optimum - Max.
Depth of Cut ap (Inch) Min. - Optimum - Max.
Work Material
Work Material
Grade
Grade
Cutting Speed vc (SFM)
Feed Rate f (IPR)
General Sintered Alloy High-density Sintered Alloy
BN7125
-8200 3300
.002- -.024 .012
-.039 .020
BN7115 BN7125 BN7115 BN7125
490 490 330 330
.003 .006 .002 .006
.005 .010 .004 .010
330-
.002-
30 30 30 30
- - - -
- - - -
990 990 660 660
.0004 .0004 .0004 .0004
- - - -
- - - -
.006 .012 .005 .012
.002 .002 .002 .002
- - - -
- - - -
.010 .020 .008 .020
Cast Iron
¢ Recommended Cutting Edge Treatment
BN7125
BN7115
E
E
Type
W (mm) Honing
Type
W (mm) Honing
LF
Burr Control Emphasised
Burr Control Emphasised
LF type No R Honing
type
15 °
0.12
15 °
0.12
Standard LF LE LS
No No
Standard LF LE HS
No No
No R Honing LE
Sharp Edge Sharp Edge
Sharp Edge Sharp Edge
type R Honing
LE
type
Yes Yes Yes Yes
Yes Yes
LS type R Honing
0.07 0.05 0.12
0.12
15 ° 25 ° 25 °
25 °
R Honing
Negative Land Width W
HS US
Standard No R Honing
Rake Face
Standard No R Honing
Surface Roughness Emphasised
Surface Roughness Emphasised
HS type R Honing
Negative Land Width W
R Negative land angle
Rake Face
CBN
HS type R Honing
Honing
US type R Honing
Flank
Fracture Control Emphasised
R Negative land angle
Fracture Control Emphasised
CBN
Honing
Flank
Frequency of Interruption
Heavy
Frequency of Interruption
Heavy
L18
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