Bronze Supporter
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With that particular machine configured as such, if I ran it for 6 seconds it would cook the zinc out of the alloy and it'd be too brittle. A good telltale sign is if you get an orange(ish) flare in the flame that's coming off the brass (that's actually the zinc vaporizing off).I think you would have better results if you increased your dwell time
to around 6 seconds with 223 brass. To get a proper anneal you need two components time and temperature. The often bandied about 750 degrees to anneal is with a time component of 1hr. To get a proper anneal in seconds you need to get to 1000 degrees or so. With the Annealeze and 223, I have found the sweet spot to be about 6 seconds with the flame turned to max. On my machine that equates to 30% of max output speed. It is very hard to over anneal brass. See Reese at the range video posted above as he is a metallurgist and has a pretty good handle on the process. I have posted another of his vids in another annealing thread but will link it here also. As always ymmv.
I use gas torches for brazing and soldering ferrous and non-ferrous metals on an (almost) daily basis and know my torch flame is hitting >1000°F inside the cone, which is where I place my brass.
The video doesn't show the color of the annealed necks very well, but they're about the same color as the virgin annealed MILSPEC rounds I have laid up.
IMHO, it's an art form as much as it is "scientific formulas".
I have taste, but class continues to allude me!@Stomper you do get style points for the Kidd Rock track!
Ha, maybe I'll have to click.
Oh now…. You're so click averse!