Buzzsaw Blade annealing

viral

viral

Joined
Jan 20, 2013
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I know... I know... Everyone and there brother has a grudge against using unknown steels. And I understand why and how difficult it is and that what I got may be a complete crap shoot. But, here we go. Last weekend at a swap meet I bought 2 buzz saw blades for $15. One is 19inches across and when cleaned up comes in at .090 and the other is 24.5 inches and comes in at .130. I started on the smaller one and I have tried several times to anneal it and I can't get it to anneal. Does anyone have any suggestions on what to do here? I made a small stick tang out of it and after i heat treated it i had .050 on my edge and started beating on a piece of rebar to see if it would roll, chip, or break and it just dented the rebar in. It sparks very well. My heat treat regime, I got it slightly past nonmagnetic and let it soak for 3 minutes and quenched in warm oil. I need to anneal these bigger pieces to drill pin holes in, its wearing out my crumby little drill press. I hope someone can help me and I know everyone will suggest that this entire conversation could have been avoided if i had used known steel... Thanks guys. I appreciate it.
 
It's good steel, very similar to 1075-1084. No need to anneal, just normalize... Heat to a red color and let air cool.
 
Don Hanson III said:
It's good steel, very similar to 1075-1084. No need to anneal, just normalize... Heat to a red color and let air cool.
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hey don, thank you for the reply. I have tried this and I still cant drill it.

I forgot to mention this is the old ones with fixed teeth, not the ones with replaceable teeth.
 
viral said:
hey don, thank you for the reply. I have tried this and I still cant drill it.

I forgot to mention this is the old ones with fixed teeth, not the ones with replaceable teeth.
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You may be heating it too hot, or it's cooling too fast? Dull bits? I've used a lot of old saw blades & one normalizing heat, they always drilled fine?
 
Don Hanson III said:
You may be heating it too hot, or it's cooling too fast? Dull bits? I've used a lot of old saw blades & one normalizing heat, they always drilled fine?
Click to expand...

The old pro hit the nail on the head. I was drillin holes before the steel was even cool. Thank you very much Don. That saw blade steels seems to be some hard stuff. I appreciate it very much.
 
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