Annealing in a Casting Pot?
- Thread starter jethunter
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If you think that liquids in the presence of molten metal is an acceptable gamble, try walking into a smelter sipping a can of pop.
The liquid doesn't have to penetrate the surface of molten metal, there just has to be the right combination of time, temperature and volume to create a steam explosion that will blow out in all three dimensions. Mainly up and out. It will really hurt.
The liquid doesn't have to penetrate the surface of molten metal, there just has to be the right combination of time, temperature and volume to create a steam explosion that will blow out in all three dimensions. Mainly up and out. It will really hurt.
BattleRife
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I put it in the Lee pot and turn it on. No special methodologies at all. The KNO3 starts as white prills (irregular spheroids) about 1mm diameter or a bit less, as they get warm they become slightly transparent then melt to form a liquid with clarity and viscosity close to water. Nothing to it.
Are you sure what you have is potassium nitrate? does it have an assay or grade statement on the label?
What I have is stump rot formula which usually is 99% PN, they look as you describe.
I suppose they could have something in it like an anti caking compound.
I'm now in the process of recrystallization to purify it and retry again, it looked like mud the first go.
Properly annealing steel requires 850+ celcius
A deep frier would be a very slight temper if anything at all.
BattleRife
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Using what as the medium? Certainly not vegetable oil?
After following this thread, I think I'll stick with my propane torch and electric screw driver ....
Re: thermostat debate, as a gas fitter for a major utility company, we advised people to think of a thermostat as a "switch", for want of a better term. I'd add to that calling it a semi-automatic switch, designed to go on or off on during it's setting range.
Re: thermostat debate, as a gas fitter for a major utility company, we advised people to think of a thermostat as a "switch", for want of a better term. I'd add to that calling it a semi-automatic switch, designed to go on or off on during it's setting range.
Finally got it going.
Went with my own design, a flat disk on the bottom with 4 legs going up to a ring.
The ring is the support for interchangeable pods, each designed for a specific caliber.
The pod is also adjustable via the center bolt depending on how deep you want your brass immersed.
All hardware is stainless and pot is PID controlled.
I might raise the plate a little so it is more level with the top of the pot.
Went with my own design, a flat disk on the bottom with 4 legs going up to a ring.
The ring is the support for interchangeable pods, each designed for a specific caliber.
The pod is also adjustable via the center bolt depending on how deep you want your brass immersed.
All hardware is stainless and pot is PID controlled.
I might raise the plate a little so it is more level with the top of the pot.
BattleRife
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Now, that's a nice setup!
What did you do to resolve your issue with KNO3 charring vs melting?
What did you do to resolve your issue with KNO3 charring vs melting?
Turns out the KNO3 had a caking agent in it, I just performed a recrystalization process to purify it and it was perfect.
