Reheat treat of Cpm154

[Matt Rochester]

So I recently heat treated some kitchen knives and 5 out of 7 wound up warped a little. I have tried straightening to no avail and even broke one. I was wondering if I could just heat treat them again and plate quench to straighten. Do I need to worry about grain growth or anything like that?

On a side note I think they warped from not being ground evenly. I will clean them up before the second go around.

 

[DevinT]

It's best to foil wrap blades and do a sub-critical anneal before re-heat treating. Heat to 1450'f for 8 hrs and air cool.

Hoss

 

[Matt Rochester]

Thanks Boss. So after that I can heat treat as usual?

 

[DevinT]

Yes, proceed as normal.