B6K/B36

For light to medium interrupted machining ｜ CBN for machining hardened material

High performance, low cost CBN

Recommended for semi-interrupted cuts

Versatile CBN designed for machining hardened materials at 55 HRC or above with light to medium interruptions

CBN with a special TiCN binder achieves a combination of wear resistance and fracture resistance
Stable performance through light to medium interrupted machining
B6K (coated CBN):
A special hard TiCN layer prevents a chemical reaction between the CBN and the iron in the work piece during material removal
B36 (uncoated CBN):
Ideal for machining the hardened material laye

Light to medium interrupted machining of hardened materials of HRC55 or above

As the edge preparation increases the tool pressure on the insert increases.

[ Cutting conditions ]
SCM415(HRC63-65) m vc=200m/min f=0.1mm/rev ap=0.2mm 670 SFM .004 IPR .008 DOC DRY

[ Insert ]
TNGA160408

There is a direct correlation between an increase in the edge preparation and improvement of insert fracture resistance.

[ Cutting conditions ]
SCM415(HRC63-65) vc=75m/min f=0.1mm/rev ap=0.3mm 250 SFM .004 IPR .012 DOC DRY

[ Insert ]
TNGA160408

Cutting conditions

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Grade	Material	Operation type	Machining	Cutting speed (m/min) Cutting speed (SFM)	Feed(mm/rev) Feed(IPR)	DOC(mm) DOC(inch)	DRY	WET
B6K/B36	Hardened material (HRC55 or above)	Turning Light to medium interrupted machining	Finishing	40 – 240 130 – 800	~ 0.15 ~ .006	0.1 – 1.0 .004 – .040	●	●

Case study

Interrupted OD turning of machine parts
Material : Carbon steel – quenched(HRC50)
Front turning Heavy interruption
Cutting speed : 210～220 m/min 700～730 SFM
Feed : 0.08 mm/rev .003 IPR
DOC : 0.20 mm .008 inch
Coolant : WET
B6K	700 pcs / corner
Conventional tool	400 pcs / corner

Interrupted OD turning of automotive parts Steel – carburized & quenched
Material : SCM415 carburized
Front turning Heavy interruption
Cutting speed : 75 m/min 25 SFM
Feed : 0.27 mm/rev .010 IPR
DOC : 0.8 mm .030 inch
Coolant : DRY
B6K	400 pcs / corner
Conventional tool	150 pcs / corner

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