NON-COATED CBN SERIES

OUTLINE

Mitsubishi Materials is one of the few tool manufacturers producing it's own sintered CBN for use in CBN tools. The original CBN material, honing, brazing and other various technologies means that CBN inserts are especially effective for efficient, high speed and accurate machining of hardened steel and cast iron.

FEATURES

CBN tool material is produced by mixing the main component CBN (cubic boron nitride), which has a hardness second only to diamond, with a special ceramic or metal binder. It is then sintered at a pressure of over 5GPa and at a temperature of 1200°C or higher.
CBN has lower affinity to iron than diamond. The low affinity and high hardness properties means that sintered CBN delivers a superior cutting performance especially during high speed machining of materials such hardened steel, cast iron and sintered alloys etc.

HARDNED STEEL MACHINING

Grade	Grade Features and Application	Main Component
	For General Purpose Turning By employing a "Particle-activated Sintering Method", the new sintered CBN technology is recommended for continuous cutting from medium to high speeds.	CBN (Micro Grain) TiN Al2O3
	For High Speed Continuous Cutting It features improved wear resistance due to impregnation with larger CBN particles.	CBN TiN Al2O3
	For Continuous to Medium Interrupted Cutting Excellent balance of wear resistance and fracture resistance due to introduction of micro-grain CBN particles.	CBN (Micro Grain) TiC Al2O3
	For Heavy Interrupted Cutting Improved grade employing micro-grain CBN particles. Excellent fracture resistance for use in heavy interrupted cutting.	CBN (Micro Grain) TiN Al2O3

CUTTING PERFORMANCE

Continuous Cutting

Workpiece: : JIS SCM415 (60HRC)
Feed: : 0.1mm/rev
Depth of Cut: : 0.1mm
Wet Cutting

Interrupted Cutting

Workpiece: : JIS SCM415 (60HRC)
External Interrupted Cutting 8 Groove
Cutting Speed: : 150m/min
Feed: : 0.15mm/rev
Depth of Cut: : 0.2mm

Dry Cutting

SINTERED ALLOY MACHINING

FEATURES AND RECOMMENDED CUTTING CONDITIONS

For General Cutting

High CBN content and a special binder to bind CBN particles allows MB4020 to deliver long tool life during the machining of sintered alloys. A general-purpose grade suitable for the machining of various sintered alloys with different hardness and structures and varied workpiece geometries. For General Cutting

CUTTING PERFORMANCE

Continuous cutting of high density sintered alloy

Workpiece: : High density sintered alloy
Insert: : NP-CNGA120408
Cutting Speed: : 190m/min
Feed: : 0.15mm/rev
Depth of Cut: : 0.1mm

Wet Cutting

Continuous cutting of sintered alloy

Workpiece: : Sintered alloy
Insert: : NP-CNGA120408
Cutting Speed: : 100m/min
Feed: : 0.15mm/rev
Depth of Cut: : 0.1mm

Wet Cutting

CAST IRON MACHINING

Grade	Grade Features and Application	Main Component
	For General Cutting General purpose grade with well balanced wear and fracture resistance.	CBN TiC Al2O3
	For High Speed Cutting Has the larger CBN content and therefore displays good thermal conductivity. It is suitable for the high temperatures that are generated in high speed cutting.	CBN (High Content) Co Base Alloy
	For High Speed Cutting and Roughing of Cast Iron Highest CBN content, high thermal conductivity. Enables deep depth of cut.	CBN AIN (Solid)

CUTTING PERFORMANCE

Continuous Cutting

Workpiece: : JIS FC250
Insert: : TNGA160408
Feed: : 0.1mm/rev
Depth of Cut: : 0.15mm

Dry Cutting

Workpiece: : JIS FC250
Insert: : TNGA160408
Feed: : 0.1mm/rev
Depth of Cut: : 0.1mm

Dry Cutting

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