Halnn Superhard Materials Co.,Ltd
CBN Cutting Tools for turning rolls instead of Grinding Together with the Tool Holder When choose the cutting tools for turning rolls, most customers don’t know how to choose. They usually choose carbide insert and ceramic insert first, but the wear resistance of carbide insert is not good, and the ceramic insert will be easily chipping, this is because the rolls surface often has high hardness, which will be above HSD70. And for this type rolls, the carbide insert can’t be useful, and the ceramic cutter will be brittle, so the ultra hard cutting tools will be the right choice. Common CBN Grade for turning rolls are BN-K1 and BN-S20 solid cbn insert. BN-K1 can be used for turning cast iron roll and forged steel rolls, which have excellent impact resistance and wear resistance. They will not easily chip, is the ideal cutting tools for machining cast iron rolls.
BN-S20 can be used for turning cast steel rolls and forged steel rolls, when machining above 2 type rolls, the insert has good impact resistance and wear resistance, has high hardness, red hardness, and it adopt non-metal adhesive, the tool life will be about 1.5~2 times of common cbn insert. For example, when turning the Ni-Cr cast rolls, which hardness id HSD80, we can choose Halnn BN-K1, the cutting data is ap=4mm, Fr=1mm/r, Vc=55m/min, cutting type is dry cutting, and the cutting speed and feed rate will be same with ceramic cutter, and the feed rate will be 2 times of ceramic cutter. Halnn BN-K1 have strong impact resistance, and the tool life will be 6 times more than ceramic cutters. The cutting data for machining rolls with BN-K1 and BN-S20 for reference: Recommend Cutting Parameters
Machining Materials
Hardness
Cast Iron Rolls
HRC35~68
Cast Steel Rolls
≥HRC45
Cutting Speed Vc(m/min)
Machining Type
Cutting Depth ap(mm)
Feed Rate Fr(mm/r)
35~120
Roughing
1~10
0.15~0.7
60~180
Finishing
≤1
0.05~0.35
50~150
Roughing
1~10
0.15~0.7
60~250
Finishing
≤1
0.05~0.35
CBN Insert Grade BN-K1 BN-S20
For a variety of roll turning, you can choose Halnn Tools, we have targeted tools for you, we are continue to research new grades to satisfy all the requirements of the customers. When you have any problems on turning rolls, please feel free to contact with us halnntools@gmail.com, Whatsapp:+8618695866134
halnntools@gmail.com