Uncoated CBN for Hardened Steel Machining BN1000 / BN2000
Hardened Steel
■ General Features Uncoated CBN - SUMIBORON grades that have a newly developed high-purity ceramic binder applied to them. Both fracture and wear resistance are combined to achieve a stable tool life in a wide variety of hardened steel machining. We offer a wide selection of tools starting with single- cornered types.
BN2000
L
BN1000
■ Features
● BN1000
· CBN - SUMIBORON grade for high-speed machining with the best wear resistance, providing superior tool life in continuous cutting to light interrupted cutting. · Improved fracture resistance while also emphasizing wear resistance Improved hardness and thermal resistance from the high-purity TiCN ceramic binder. · G eneral-purpose grade suitable for typical hardened steel machining applications Provides stable tool life in everything from continuous cutting to light to medium interrupted cutting. · Has a high degree of both fracture and wear resistance Significant improvements in the performance of both by employing a high-purity ceramic binder. · Stable surface roughness achieved by increasing edge sharpness (right figure)
Sharpness Comparison
● BN2000
Small cutting edge roundness compared to conventional grades
BN2000
Conventional Grade
■ Newly Developed High-Purity Ceramic Binder
BN1000 / BN2000
Conventional Grade
High-purity ceramic binder
High-purity ceramic binder
Cracks
Ceramic Binder
Cracks
Ceramic Binder
CBN
CBN
Impurities
Impurities
CBN
CBN
With a newly developed high-purity ceramic binder, BN1000 / BN2000 achieve toughness and improved thermal resistance by decreasing impurities to an extreme.
With a newly developed high-purity ceramic binder, BN1000 / BN2000 achieve toughness and improved thermal resistance by decreasing impurities to an extreme.
The impurities contained in the ceramic binder for conventional grades decrease the sintered body strength and thermal resistance, leading to cracks (breakage) and wear.
The impurities contained in the ceramic binder for conventional grades decrease the sintered body strength and thermal resistance, leading to cracks (breakage) and wear.
■ Application Range
■ Recommended Cutting Conditions
● BN1000
● BN2000
1000
Cutting Speed v c (SFM)
Cutting Speed v c (SFM)
BN1000
165 300 330 400 500
660
825 1000
165
330 400 500
660
825 1000
660
BNX25
BN2000
Feed Rate f (IPR) Depth of Cut a p (inch) .0012 - .0059 .0012 - .0079
Depth of Cut a p (inch) .0012 - .0079 .0012 - .0117 Feed Rate f (IPR)
BNX20
BN350
330
Cutting Oil: Continuous Cutting Dry, Wet Interrupted Cutting Dry
Light Interrupted Medium Interrupted Heavy Interrupted Continuous
Small
Impact Force on Cutting Edge Large
L16
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