CBN
High hardness and thermal resistance for machining hardened steel and hard cast iron. High-speed finishing of gray cast iron with long tool life is also possible. In 1977, Sumitomo Electric Hardmetal successfully developed a revolutionary CBN sintered tool called SUMIBORON . The main component in SUMIBORON is cubic boron nitride with a special ceramic binder sintered under super high pressure and temperature. Compared to other conventional tool materials, CBN has higher hardness and excellent thermal resistance. With these distinct characteristics, SUMIBORON can perform machining of hardened steel, hard cast iron and exotic alloys which was previously only done by grinding. Excellent efficiency and longer tool life can also be achieved from high-speed finishing of cast iron. ® ® ®
A
Features
Structure Features
Structure
CBN Content Hardness (GPa)
Grades
Work Materials/Applications Cast Iron, Titanium Alloy, Pure Titanium, Cobalt-chrome Alloy, Cemented Carbide, Cermet Cemented Carbide, Chilled Cast Iron, Ni-Hard Cast Iron, Sintered Ferrous Alloy, Heat-Resistant Alloy Alloy Steel, Case Hardened Steel, Carbon Tool Steel, Bearing Steel, Die Steel, Ductile Cast Iron
Features
Containing no binder, its structure of directly bonded nano- to sub-micron CBN particles provides
·
High
54
Pure CBN particles, firmly bonded
high hardness and thermal conductivity, making it highly efficient with a longer tool life when machining exotic alloys such as titanium alloys and cobalt-chrome alloys ·
NCB100
High CBN content. Structure consists of strongly fused CBN grains Suited to cutting cast iron, heat-resistant alloy, cemented carbide and other high-hardness materials CBN grains are fused together strongly with a special ceramic binder Strong CBN binding provides superior wear resistance and toughness when cutting hardened steel and cast iron
BN7125 BN7115 BNC8115 BNS8125
Mainly CBN grains fused together
·
BN1000/BN2000/BN350 BNX10/BNX20/BN500 BNC2115/BNC2125/BNC2105 BNC2010/BNC2020/BNC300 BNC100/BNC160/BNC200/BNC500
·
Mainly CBN grains held together with a binder
·
Low
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Grade Map
Part Material
Application
High-speed Cutting Finishing to Light Cutting
Medium Cutting
Rough to Heavy Cutting
−
H01
H10
H20
H30
Classification
BNC2105
BNC2115
BNC2125
Coated SUMIBORON
®
BNC2010
BNC2020
BNC300
BNC100
BNC160
Hardened Steel
BNC200
BN1000
Uncoated SUMIBORON
BN2000
®
BNX10
BNX20
BN350
−
01
10
20
30
Classification
Sintered Alloy
BN7115
Uncoated SUMIBORON
®
BN7125
−
K01
K10
K20
K30
Classification
Coated SUMIBORON
BNC500 *
BNC8115
®
NCB100
Cast Iron
BN7125 BN500
Uncoated SUMIBORON
®
BNS8125
−
S01
S10
S20
S30
Classification
NCB100
Uncoated SUMIBORON
BN7125
®
Exotic Alloy
BNS8125
A32
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