SUMIBORON / Coated SUMIBORON CBN Grade Guidance
Hardened Steel
Cast Iron
Exotic Alloy
ROLL MACHINING
● Advantages of roll machining with CBN - SUMIBORON CBN - SUMIBORON enables the machining of high-hardness rolls that were previously difficult to machine with conventional tools, drastically improving machining efficiency.
Recommended Grade
Recommended Cutting Conditions
Part Material
Recommended Cutting Conditions Cutting Speed v c (SFM)
90
BNX20 Die Steel
High Speed Steel
Feed Rate f (IPR)
Depth of Cut a p (Inch)
Hardness (HS)
BNS800 BN7000
Category
65 130 200 265 330 400 465
80
L
.0079 - .1181
.0039 - .0197
Adamite
≥ 40
Hard Cast Iron Chilled Cast Iron High Alloy Cast Iron
70
Chilled cast iron High-alloy cast iron
BN500
.0079 - .1181
≥ 60
.0039 - .0197
Ductile Cast
60
.0079 - .1181
≥ 60
.0039 - .0197
Iron Adamite
BNX20
50
.0039 - .1181
HSS
.0039 - .0157
≥ 70
Finishing to Medium to Roughing Roll stand (example for bar steel rolling)
HARD FACING ALLOY MACHINING
● Advantages of hard facing alloy machining with CBN - SUMIBORON CBN - SUMIBORON enables the machining of high-hardness facing alloys that were previously difficult to machine with conventional tools, drastically improving machining efficiency. The first recommended grade is BN7000, followed by BNS800.
Performance
Recommended Cutting Conditions
Whisker Reinforced Ceramic ( v c = 165 SFM)
Part Material
Recommended Cutting Conditions
.0039
165 330 660 1000 Cutting Speed v c (SFM)
Feed Rate f (IPR)
Depth of Cut a p (inch)
Category Material
Ni-Based Self-Fluxing Alloy
BNS800 ( v c = 1000 SFM)
Colmonoy No.6
.0019
.0019 - .0079
.0039 - .1181
BN7000 ( v c = 1000 SFM)
Co-Based Self-Fluxing Alloy
.0019 - .0079
.0039 - .0394
Stellite
0 40
80 120 160 200
Time in Cut (minutes)
Work Material: Colmonoy No.6 (NiCr-Based Self-Fluxing Alloy) Tool Cat. No.: SNG322 Cutting Conditions: f = 0.0039 IPR, a p = .0079" Dry
● BN7000 has a long tool life and minimal wear with high speed cutting
HEAT-RESISTANT ALLOY MACHINING
● Advantages of heat-resistant alloy machining with CBN - SUMIBORON CBN - SUMIBORON provides long tool life in the finishing of heat-resistant alloys.
Recommended Grade
Recommended Cutting Conditions
Part Material
Recommended Cutting Conditions
1,320
165 330 500 660 Cutting Speed v
c (SFM)
Feed Rate f (IPR)
Depth of Cut a p (Inch)
Category Material
BN350
660
Ni-Based Heat-Resistant Alloy
Inconel 718
.0019 - .0079
.0039 - .0394
330
BN7000
Co-Based Heat-Resistant Alloy
.0019 - .0079
.0039 - .0394
Stellite
165
Carbide (Roughing, Med. Finishing)
100
.0039
.0079 .0118 .0157
Feed Rate f (IPR)
● CBN - SUMIBORON is ideal for finishing heat-resistant alloys.
L10
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