Pro Heat treat for carbon

John mc c

John mc c

Joined
Aug 23, 2018
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Hey guys, after finally getting my first ASO iv forged out about 8 integral chef knives and slicers in bohler n510 silver steel
My problem is until I got the hang of it my first 2 ended up thin by time I chased those forging marks out on the grinder,rest are fine iv left enough meat on them to grind post heat treat
Has anyone any experience using pro heat treat for carbon and do you get them back as you gave them like with stainless in terms of decarb and scale?
 
There will always be some decarb with carbon steel, but a good HT setup can minimalize it.
Warp is taken care of in different ways. Some pros use a torch to heat the spine, but this isn't really the best idea.

I would contact JT at JTKnives about doing your HT. He has a gas shielded oven and uses good technique to prevent and straighten warp. The blades come back straight.
 
Thanks for reply Stacy.
Since posting that I've bought an anvil and picking it up tomorrow, I could actually cry from happiness :-) so possibly losing a blade to warp or thinness doesn't seem the end of the world to me now so I might give it a go myself with a good coat of anti scale AST from Brownell's
I'm expecting chef knives from 1" round to be a lot easier on a 200 pound anvil than a rail track aso
 
Thin is relative. I do .040" regularly. Immediately after the quench ( count to eight) pull the blade and straighten with gloved hands. It is very pliable and can be bent easily. As soon as you have checked/straightened the blade, place between two flat slabs of metal, or even 2X6 boards and let cool.
 
Well mine aren't that thin so might be OK
2 mm above heel but blade is 300 long
And I like that board idea as its an integral so I can cut and notch in to suit the bolsters
Thanks again Stacy
 
Stacy E. Apelt - Bladesmith said:
Thin is relative. I do .040" regularly. Immediately after the quench ( count to eight) pull the blade and straighten with gloved hands. It is very pliable and can be bent easily. As soon as you have checked/straightened the blade, place between two flat slabs of metal, or even 2X6 boards and let cool.
Click to expand...

I don't have slabs of metal, but I do have some 2x6s, do you clamp the boards together? I also have some angle iron, would two piece of that work as well?
 
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