Hard Metal Lathe Cutting Tools CBN Cutters Hard Turning Inserts
1. What is hard turning ?
The so-called hard turning refers to one process that make hardened steel turning as the final processing or finishing process. Hardened steel usually refers to one type materials that include martensite after quenching, high hardness, high strength, almost no plastic.
When hardened steel hardness> 55HRC, its strength is about 2100 ~ 2600N/mm2. Normally, the work piece has already been rough machined before heat treatment, and only left finishing process.
2. Hard Turning Inserts ~ CBN Inserts
In the early nineties, hard turning really began to develop. With the continuous development of the machinery manufacturing industry, more and more hard-to-machine materials and complex materials appear, and the traditional tool materials have been difficult to handle or can not realize the processing of high-strength and high-hardness materials at all. Modern tool materials such as ceramic inserts and CBN inserts make it possible for hard turning.
3. Halnn CBN Inserts for hard turning
Insert Grade | Depth of Cut (mm) | Recommend Cutting condition | Suited Materials |
BN-S20 | 1-10mm | Interrupt-Continuous | Hardened Steel, Heat and abrasive resistant steel, High manganese steel |
BN-H20 | ≤1mm | Semi-Interrupt | Hardened steel, other materials of difficult to machine |
BN-S200 | ≤1mm | Continuous | Hardened Steel, Superalloy |
BN-H11 | ≤1mm | Continuous | Hardened Steel |
BN-H05 | ≤0.2mm | Continuous | Hardened Steel |
BN-H10 | ≤0.5mm | Continuous-Semi-interrupt | Hardened Steel, high strength cast iron |
BN-H21 | ≤0.5mm | Semi-interrupt~ Heavy Interrupt | Hardened Steel |
BN-H05 C25 | ≤0.2mm | Continuous | Hardened Steel |
BN-H10 C25 | ≤0.5mm | Continuous~Semi-Interrupt | Hardened Steel, high strength cast iron |
BN-H21 C25 | ≤0.5mm | Semi-Interrupt~Heavy Interrupt | Hardened Steel |
4. Hard Turning Inserts Application