A bonehead move...

S

Skinner79

Joined
Feb 5, 2019
Messages
40
Working on my first blade from 80CrV2, and I was really happy with how it was turning out. Getting ready to heat treat it, my brain farted. Intended to program my HT oven for 1525 degrees with a 10 minute soak. But instead, set it for 1925 with a 10 minute soak. Put the knife in the oven, happy and oblivious. Took it out and was shocked to find massive scaling and weird pitting. Blade was not hard after quench. Scratched my head wondering what went wrong. Suddenly, it dawned on me what I had done! Crap.

Started to just pitch the blade, but thought I'd get you guy's opinion. I re-ground the bevels just to see what it would look like, and to the eye the blade looks salvageable, but I have no idea if I've ruined the steel, or what I would need to do to re-heat treat it.

I hate doing stupid stuff! 🤪
 
No harm done that’s not fixed with proper temp cycling. I would at a minimum run a normalization cycle at 1600-1650 and air cool. You could also do a grain refining series of cycles as well if your concerned with the grain size.
 
In 80CrV the simplest answer is start over.

If you normalize the blade and do a grain refinement you could harden it properly again, but you will end up with a thinner and smaller blade after grinding off all the decarb and scale. The cost in time, belts, electricity, etc. isn't worth a small piece of 80CrV.
 
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