Annealing????

[SONIC SAAMI]

As of now this is how I have been doing it.


475 and 650 degree Tempilaq.
Paint a line around the datum line of the case with the 650 stuff and a line about 2/3 up from the base of the case with the 475.
MAP gas in a single torch,the case in a drill it takes about 16 seconds for the 650 Tempilaq at the datum line to melt. The 475 is still good.

Please feel free to chime in if you think I need to change anything.

 

[GardDog]

Re: Annealing????

What (if anything) do you do with the annealed case after it is heated? Drop into water, etc?

 

[Grumpy61]

Re: Annealing????

16 seconds seems like a long time, especially with MAP gas. I use regular propane and spin in the flame for 8-10 seconds, depending on the brand of brass (308).

 

[MALLARD]

Re: Annealing????

16 seconds is a long time with MAP gas. I agree.

 

[Twitch2120]

Re: Annealing????

might be holding further from the flame. supposed to be the inner cone of the flame touching right? does map burn hotter than propane? i forget the temps they reach for metal cutting purposes

 

[Jedi]

Re: Annealing????

Tempilaq IMHO useless never got it to work even bought the thinner,
much easier to ck color of case visually
16 secs???
4.2 on my benchsource for 6.5x47

 

[YAOG]

Re: Annealing????


Anybody using the Giraud machine? Seems expensive but perfect for volume annealing work.

 

[6.5x61Super]

Re: Annealing????

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DaveD</div><div class="ubbcode-body">As of now this is how I have been doing it.


475 and 650 degree Tempilaq.
Paint a line around the datum line of the case with the 650 stuff and a line about 2/3 up from the base of the case with the 475.
MAP gas in a single torch,<span style="color: #FF0000">the case in a drill it takes about 16 seconds</span> for the 650 Tempilaq at the datum line to melt. The 475 is still good.

Please feel free to chime in if you think I need to change anything.

</div></div>


wow.....16 secs.

I use a MAP torch [yellow tank], brass in a Sinclair caseholder, spin at 300 rpm...no more than 4 - 5 seconds....any longer and the neck glows <span style="color: #FF0000">RED</span>


...flame tip hitting top 1/3 of brass, shoulder + neck from about 1.5" away...

 

[jkonzal]

Re: Annealing????

I anneal after each 2nd firing and use propane. For my 308 Lapua brass with a 1" flame (center) and spinning with a drill, it takes about 8 seconds to get the color change that I want. I always try to match the look on new Lapua brass.

 

[SONIC SAAMI]

Re: Annealing????

As of now the torch I use is turned on low.
In a dark room when the 650 tempilaq placed at the datum line melts the neck wont even be red from the heat

For cooling I have been dropping the hot cases in a pan of water

 

[Jedi]

Re: Annealing????

Read this, pert much how i do it
much easier than messing around with tempilaq

http://annealingmachines.com/how_to_anneal

 

[Deadshot2]

Re: Annealing????

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: DaveD</div><div class="ubbcode-body">As of now the torch I use is turned on low.
In a dark room when the 650 tempilaq placed at the datum line melts the neck wont even be red from the heat

For cooling I have been dropping the hot cases in a pan of water </div></div>

All dropping in the water does is give you a wet case. Just drop them in a stainless steel mixing bowl and let them cool. Brass does not need to be quenched when annealing, just hot.

As for the tempilaq, too much drama. I got a tempilstik (750 degrees), checked the first few cases by touching it when removed from the flame, and then gauged the time in flame for the rest of the cases. Once you do a few it's easy to just go "flame, two, three, four, etc, Dump, load, flame etc)

Too big a flame will shorten the time and overheat the case neck quickly. Too small a flame and you run the risk of too much heat migrating down the case wall. I use a mini bernz torch with about a 1.5" total length flame. It takes about 6 seconds to reach 750 degrees at the "datum line". The moment the case is removed from the flame it starts to cool rapidly. In the time it takes me to put away my torch and put the sizing die in the press the cases are cool enough to handle. I don't have to wait for the cases to dry so I can prime and load them as you have to do with the water dunk.

Just how I get through the process of annealing and every case I shoot in my .308 gets the treatment after every firing. ONE case neck split in 4 years with cases having been fired 10-15 times.

Machines are OK I guess but then I'd be out the big bucks and have to build more room for one in my reloading setup.