reheat treat 440C

J

JDW

Well-Known Member
I am working on 2 fillet blades and one warped bad in the quench, about
3/32". I know what happened, I placed this blade on the bottom plate while I was getting the other one out of the oven and placed it then put the top plate on, I think this caused uneven cooling due to one plate on the bottom and none on top, for about 15 secs. My question is, can 440C be reheat treated, and be ok? Or do you have to anneal it first? it has been tempered and ready to clean up and finish.
Thanks
Dale
 
I would think you would want to anneal it completely, bend it straight, then reheat it.
 
Bruce, I am going to try heating it to 1000, then straighten it, and do a couple of stress releiving heats and then foil wrap it and re harden it. What do you think?
Dale
 
Thanks Bruce, I hope to try it today, if I feel like fighting the heat in the shop.
Dale
 
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