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CBN Grade for Turning Hardened Steel

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New Coated CBN Grades for the
Modern Technique of Turning
Hardened Steels

BC8210 For Continuous and Light Interrupted Cutting

Outstanding Tool Life with High-speed Machining

Suitable for continuous cutting and Light interrupted cutting. BC8210 exhibits excellent chipping, flank and crater wear resistance, thereby providing a stable machining process at high speed cutting conditions.

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BC8220 General Applications

Achieves Impressive Tool Life Over a Wide Range of Cutting Conditions.

Highly suited to a wide application area from continuous through to heavy interrupted cutting. It also has excellent crater wear and fracture resistance due to the new CBN base material and together with a new coating dramatically extends tool life.

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Ultra Micro-particle/ Heat Resistant Binder Technology

The new CBN substrate contains a new ultra micro-particle and heat resistant binder. This suppresses both chipping and crater wear that promotes longer tool life.

Optimised Substrate Technology with Ultra Micro-particle Binder

The ultra micro-particle binder prevents linear crack development to avoid sudden fracturing.

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Positive Effect of the Newly Developed Heat Resistant Binder

The progress of crater wear is greatly reduced due to the use of a heat resistant binder.
This suppresses chipping, crater wear and fracturing.

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Area of Application

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Edge Preparation (Honing)

New VA honing type with improved fracture resistance for high speeds and feed.
In addition, a range of different honing types that can be used for various applications is available.

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Combination of BF Breaker and WS Wiper Insert

CNGM and DNGM types are now available with new inserts that combine a BF chip breaker with a WS wiper Insert. ( BC8210 : BF-oNGMooooooTSWS2, BC8220 : BF-oNGMooooooTAWS2 ) It is effective for chip control and improvement of finished surface roughness without worrying about the hand of the tool even when continuous external or internal turning and facing.

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Comparison of Wear Resistance During Continuous Cutting

Defects due to crater wear are suppressed and tool life is improved compared to conventional products.

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Comparison of Fracture Resistance During Medium Interrupted Cutting

Excelling in suppressing chipping and cracks, it also improves fracture resistance after crater wear that provides a stable cutting action that improves tool life.

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Examples of Usage

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