Both steel and ceramics, which are often used by Deren Seiko, are materials with high hardness. The hardness is higher than HRC75, which exceeds the range of Rockwell hardness. Therefore, HRA is generally used to indicate the hardness.



How to process steel
The steel you mentioned here does not refer to low-alloy steel containing steel, which is what we often call high-speed steel. It needs heat treatment to have high hardness (above HRC70). Therefore, in the processing, ordinary carbide tools can be used for rough machining or semi-finishing.

How to machine steel on a lathe! !
Grinding is generally used to process steel, emerald is often used, and diamond is preferably used. If it must be processed on a lathe, then add a grinding head to the lathe.

In addition, if the lathe is good, it is also possible to use a diamond turning tool to enter the drive.

How to process steel structure?
Machining of alloy steel structure: Before machining, rough machining or semi-finishing can be done with ordinary carbide tools.