Generally, the performance of cbn inserts for rough machining high Mn steel will not be much different, but the difference in finish machining will be more obvious.

In the process of heavy-duty roughing high manganese steel, the performance of the solid cbn insert may be unstable. The main reason for this risk could be as follows:

1)  Casting level

2)  Change in hardness caused by changes in casting materials

3)  Uneven processing allowance

4)  Tooling problems

To check if the PCBN inserts quality is stable, which can be judged from the second cutting processing, due to the machining allowance at this time is uniform.

Generally, the performance of cbn inserts for rough machining high Mn steel will not be much different, but the difference in finish machining will be more obvious.