Binderless CBN - SUMIBORON NCB100 Nano-Polycrystalline CBN
Cemented Carbide
Hard Brittle Material
Cast Iron
Exotic Alloy
■ General Features Binderless CBN, which does not contain any binders, is a CBN sintered product with directly and strongly bonded nano- to sub-micron CBN particles. Compared to conventional CBN grades, this provides high hardness and thermal conductivity, making it highly efficient with a long tool life when machining exotic alloys such as titanium alloys and cobalt-chrome alloys.
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■ Sintered Composition (SEM Image)
■ Physical Values
SUMIBORON Binderless 100
Conventional CBN
CBN Content (vol%) Binder Hardness Hv (GPa) Thermal Conductivity (W/m·K)
90 to 95
Metal binder
WC-Co
CBN Particles 1 to 5 μm
CBN Particles 200 to 500nm
51 to 54 180 to 200
41 to 44
500nm
3 μm
100 to 120̶
SUMIBORON Binderless
Conventional CBN
Binderless CBN NCB100
■ General Features Adopts a nano-polycrystalline CBN sintered cutting edge with hardness and thermal conductivity significantly higher than conventional sintered CBN. Enables overwhelmingly longer tool life and improved efficiency and machining accuracy when machining exotic alloys such as titanium alloys or cobalt-chrome alloys. ■ Features ● Ideal for high efficiency finishing of exotic alloys such as titanium alloys and cobalt-chrome alloys Exhibits outstanding wear resistance due to the excellent hardness and thermal conductivity of nano-polycrystalline CBN ● Excellent dimensional tolerance and machined surface roughness maintained for extended periods ■ Application Range (Cobalt-chrome alloy machining) Tool replacement count can be drastically reduced compared to conventional grades, enabling work efficiency to be improved and total costs to be reduced
■ Application Range (Machining Titanium Alloy)
1,000
1,000
660
660
NCB100
330
330
NCB100
0
0
.0019 .0039 .0059 .0079 Feed Rate f (IPR)
.0019 .0039 .0059 .0079 Feed Rate f (IPR)
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