RCMN09/RNGN12 Solid CBN Cutting Inserts Machining High Speed Steel HSS Rolls
1. About High Speed Steel Rolls/HSS Rolls
High Speed Steel Rolls(HSS Rolls) have the following advantages:
(1) It has high hardness, about HSD82~90
(2) Excellent Thermal stability and Thermal crack resistance
(3) Good toughness
So High Speed Steel Rolls (HSS Rolls) are difficult to machine with common cutting tools, such as carbide inserts, ceramic inserts.
2. BN-S20 Solid CBN Cutting Inserts
Halnn have researched BN-S20 Solid CBN Cutting Inserts which is specially for High Speed Steel Rolls(HSS Rolls), the common application as follow:
| Insert Grade | Machining Type | Typical Application | Insert Image |
| BN-S20 | Roughing | High Speed Steel Rolls, HSS Rolls and other steel iron rolls,Semi-Steel Rolls | Solid CBN Insert  
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3. Cutting Paramters for Machining High Speed Steel Rolls with Solid CBN Cutting Inserts BN-S20
The following is the cutting condition of BN-S20 solid cbn cutting inserts for machining HSS Rolls
| No. | Rolls Materials | Hardness | Select Halnn CBN Inserts | Vc(m/min) | Machining Type | ap (m/min) | Fr (mm/r) |
| 1 | HSS Rolls | ≥HRC45 | BN-S20 | 50~150 | Roughing | 1~10 | 0.15~0.7 |
| 60~250 | Finishing | ≤1.0 | 0.05~0.35 |
4. Application Case
| BN-S20 Solid CBN Cutting Inserts Machining HSS Rolls |
| Machining materials | High Speed Steel Rolls,HSD90 |
| Cutting Type | Dry Cutting,Continuous |
| Halnn CBN Insert Grade | BN-S20 RCMX120700 |
| Testing Performance |
| Insert Materials | Machining Time | Life Time/Edge (Grooves) | Efficiency Improved |
| BN-S20 Solid CBN Cutting Inserts | 12h | 25 | More than 6 times |
| Carbide Inserts | 2h | 3 | ...... |
5.Common Models RCMN/RNGN solid cbn inserts for machining HSS Rolls
| RCMN Solid CBN Cutting Inserts 
|
Type | Dimension | Standard Chamfer | Grades | Corresponding tool holder |
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BN-S10 | BN-S20 |
| RCMN060400 | 6 | 6.35 | 4.76 | | S01020 S02020 S05020 S10020 | ● | ● | CRDCN |
| RCMN090400 | 9 | 9.525 | 4.76 | | ● | ● |
| RCMN090700 | 9 | 9.525 | 7.94 | | ● | ● |
| RCMN120700 | 12 | 12.7 | 7.94 | | ● | ● |
| RCMN150700 | 15 | 15.875 | 7.94 | | ● | ● |
| RCMN190700 | 19 | 19.05 | 7.94 | | ● | ● |
| RNMN/RNGN Solid CBN Cutting Inserts 
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| Type | Dimension | Standard Chamfer | Grades | Corresponding tool holder |
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BN-S10 | BN-S20 |
| RNMN060400 | 6 | 6.35 | 4.76 | | S01020 S01025 S02020 S02030 S05020 S10020 | ◎ | ◎ | CRGNR/L CRDNN |
| RNMN090300 | 9 | 9.525 | 3.18 | | ◎ | ● |
| RNMN090400 | 9 | 9.525 | 4.76 | | ● | ● |
| RNMN090700 | 9 | 9.525 | 7.94 | | ● | ● |
| RNMN120400 | 12 | 12.7 | 4.76 | | ● | ● |
| RNMN120600 | 12 | 12.7 | 6.35 | | ● | ● |
| RNMN120700 | 12 | 12.7 | 7.94 | | ● | ● |
| RNMN150700 | 15 | 15.875 | 7.94 | | ● | ● |
| RNMN200800 | 20 | 20 | 8 | | ● | ● |
| RNMN201000 | 20 | 20 | 10 | | ● | ● |
| RNMN251000 | 25 | 25.4 | 10 | | ● | ● |
| RNMN251200 | 25 | 25.4 | 12 | | ● | ● |
6. Typical Application
We can offer you all products on different machining condition: such as Rough machining Cylindrical,hole turning, milling,heavy turning, turning groove, and roll repairing.
Product Tags:
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Continuous Cutting CBN Turning Tools Use In High Speed Steel HSS Rolls Images
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