Thread: O1 heat treating problem

Hi Gents!

I'm in big trouble.



I made the following process:

normalizing: none.
soaking: ~805C/1480F, 15 min.
quenching oil: 50C, 30-40 sec.
tempering: after cool enough to touch, 205C/400F, 2x1h (between cooling to room temperature)

It seemed all right but I can't sharpen the blade. The edge is very sensitive (see the pic). What did I do wrong?

More picture from the heat treatment process (on the first pic: the first few minutes on 1480F):



Thank you in advance for your help!