Triple quench?

Ben,
If you are referring to the normalization process I often post, the last step usually reads something like:
1350°F for 5-10 minutes - quench

That isn't a hardening quench, it is just a sub-critical anneal followed by a rapid cooling so you can check for straightness and then do the final austenitization ate 1435-1550°F as the steel types dictates. It could be a cool to black with the same results.
 
Stacy E. Apelt - Bladesmith said:
Ben,
If you are referring to the normalization process I often post, the last step usually reads something like:
1350°F for 5-10 minutes - quench

That isn't a hardening quench, it is just a sub-critical anneal followed by a rapid cooling so you can check for straightness and then do the final austenitization ate 1435-1550°F as the steel types dictates. It could be a cool to black with the same results.
Click to expand...

Understood. Thanks Stacy.
The OP posted those numbers. I thought in reference to each quench.
 
Yes, in some peoples methods, they quench after each cycle - thus the "triple Quench". This is to convert to martensite and create nucleation for finer grain. In that method, the last quench does nothing buy cool it off quickly, as you noted.

Unless the steel was greatly overheated for a long time, as in forge welding or high temp forging, I don't see any need for triple quenching.
 
When you want to know the difference between methods, just ask the man giving the advice what purpose his knives are intended for and how he test his knives.

Or - better yet try it yourself and and test your blades to see what works best in your shop with your steel, your equipment and methods, testing in accord with the purpose you intend for your knives. Do some comparison studies testing blades for cut, edge flex and strength and testing a few to destruction, then you will know from your own experience.
 
Hey Ed, hope things are going well with you.

If you look at the top right corner of the page you will see "settings", left click that.
Look to the left side of the new page and you will see "My Settings', and under that "permission Groups". left click that.
In permission groups, click the circle to identify your as a member of the proper group you are registered as ( probably knifemaker/service provider), then left click "save changes".

That should change the "registered user" under your name to the proper group.

Take care - Stacy
 
You must log in or register to reply here.
Back
Top