After quenching tap pin hole drilling! !

The plate material of SUS440C (shape 10 mm × 63 mm × 660 mm)
Performs quenching process, and then the hardness of 50-55 hardness HRC,
It is the one that goes tapping, a pin hole machining.

Can be performed in the heat treatment SUS440C, so you can increase the hardness,
It is used micro shaft, nozzle, corrosion resistant bearings, etc..
While it is possible to increase the hardness, processing will be difficult.
Machining Center of JoyoFuji Kogyo in Dura Vertical 5060,
So you can have high-precision machining at high hardness material,
It can be finished in 10 micron pin hole pitch accuracy.
In addition, the flatness 10μm · 10μm parallelism also in surface grinding
We will achieve the high accuracy.