Salt Bath Annealing

[MudMarine]

I would ask what happens with the salt if heated above operating range, 1100f?

The lay answer: This class of annealing salts start to "decompose" above a certain temperature. To "decompose" in chemistry means that previously stable compounds start to spontaneously break apart and form new compounds.

For example, in the case of a nitrate based salt, somewhere north of 1100F the nitrate will free itself from the other elements in the salt and instead combine with oxygen forming nitrogen oxide. NO2 is a nasty brown gas that is bad for breathing. Depending on the actual chemistry, decomposition can be violent.

 

[Mc Fraser]

Very useful info thank you.

 

[TwoMore]

the quick tem

so here is the sheet from wayne @ hightemptools. he says that it should be comparable but since im not a chemist, id like someone here to take a quick look. the 'original' one can be found here - https://ballisticrecreations.ca/salt_home/salt-rev/

the quick temper is what I am using not the quick cure
https://www.hubbardhall.com//assets/2281017.pdf

 

[raider1v1]

the quick tem

the quick temper is what I am using not the quick cure
https://www.hubbardhall.com//assets/2281017.pdf

Same thing, different name.

 

[TwoMore]

i guess they just run it at a different temp for rubber

 

[raider1v1]

i wonder if i can find the pot diameter for the RCBS easy unit that has a PID controller built into it. i want to order the plates from the guy in canada but they are never in stock as the same time as the salt!

 

[MudMarine]

i wonder if i can find the pot diameter for the RCBS easy unit that has a PID controller built into it. i want to order the plates from the guy in canada but they are never in stock as the same time as the salt!

Buying a separate PID controller and wiring it into one of the cheap Lee pots would be an easy afternoon project. Look up pid units that home brewers use to source a good one.

 

[Mc Fraser]

Now that I have all my gear to anneal and I follow the instructions to the letter, how do I know the process works?

 

[whirlwindjml]

Now that I have all my gear to anneal and I follow the instructions to the letter, how do I know the process works?

You can visibly see tje color cjange on the brass. 5 or 6 second baptism....pull it out and itll be multicolored but most importantly anealled and ready for more action without splitting from goin in through a die and then blown out to chamber dimension and back through the die.

Youll notice with some brass more than others that the life is longer before necks split.

 

[TwoMore]

worked on my setup today and got it all done , just waitn on my holder

 

[whirlwindjml]

You can get a smaller temp probe cheap if you need more bench space.... Celcius is fine just keep it about 500 celcius.

 

[JimmyCP]

Hey guys,
I stumbled onto this video and I wanted to hear your opinion on this method of annealing.

Low temp salt for brass
https://www.hightemptools.com/salts.html
Lee Melting pot
https://ads.midwayusa.com/product/4...Reloading+-+Bullet+Casting&utm_content=476462

K type probe
PerfectPrime TL1815 K-Type Sensor Probes Metal HeadProbe for K-Type Probe Thermocouple Sensor & Meter in Temperature Range from 0 to 800 °C https://www.amazon.com/dp/B0142S9J4S/?tag=lrhmag19-20

K type temp meter
Proster Digital Thermocouple Temperature Thermometer Dual Channel K Type Thermometer Tester LCD Backlight with Two K-Type Thermocouple Probe for K/J/T/E/R/S/N Type https://www.amazon.com/dp/B071V7T6TZ/?tag=lrhmag19-20

Some tinfoil over the top with a hole for your brass and hole for your probe and your in buisness.

Less than $80 if you shop around.

 

[Mc Fraser]

worked on my setup today and got it all done , just waitn on my holder
View attachment 132068 View attachment 132069 View attachment 132070 View attachment 132071

Is it to much to ask to put together a step by step tutorial for PID, specific to which part goes where and how is it wired?

 

[Mc Fraser]

First 100 cases of 300wm are done. I've selected a few for your review and input, thoughts?
500deg C for 5-6 secs.