[Seanbabs]

Inert atmosphere would work, but it's pointless when you can just suck the air out. Either way the carbon will outgas, and you want to get that shit out of the furnace. Ergo, according to Wiki (don't know who wrote that section, not cited), they pull a vacuum on the chamber. You're right that they won't be able to maintain a perfect vacuum, but they can start with a low pressure atmosphere and continue to draw out the moisture and gasses as they evolve. No fire will start.

Ahhh I see. So it is more of a lean flammability limit thing than a totally inert environment. Makes sense. I was thinking they were doing something like a 30 millitorr vacuum to create a totally inert environment, which would be extremely hard with water vapor and CO/CO2 off-gassing. (however, without combustion CO/CO2 off-gassing is << Water vapor)

 

[Leon]

They could purge the autoclave with Argon.

 

[Seanbabs]

^Yeah, that is what is usually done, but the pumps on high vacuum systems are high pressure head, low flow rate, so if you purge and then you put a material with 40% water in there, the offgassing rate could exceed the vacuum pump rate, and then you start increasing pressure.

EDIT: :facepalm: There would be little oxygen though. However, water gas shift reaction would likely take place. CO(g) + H2O(v) → CO2(g) + H2(g). Still not an issue unless you have proper stoichiometry to combust the hydrogen. So, Leon, I concede and I was wrong

 

[Leon]

Get a bigger pump! :lol:

 

[Seanbabs]

Get a bigger pump! :lol:

That may work. With low flowrate high delta p pumps, it is better to run multiple in parallel, because those types of pumps usually don't scale favorably as far as efficiency is concerned. However, I see that I was wrong and this is entirely possible.

Edit: :leon:

 

[eleven59]

Get a bigger pump! :lol:

:leon::jj:

 

[Soopahmahn]

:squint: I suppose... :lol:

I understand that they're making the neck more rigid, but as Darren pointed out, it's also going to be more brittle. I think the cure is worse than the problem, IMO.

Yeah, like I mentioned, EBMM won't do a Floyd guitar with the roasted neck, and I think that's why. It's an interesting idea - kind of accelerated aging - but sounds like a recipe for disaster.

Ahhh I see. So it is more of a lean flammability limit thing than a totally inert environment. Makes sense. I was thinking they were doing something like a 30 millitorr vacuum to create a totally inert environment, which would be extremely hard with water vapor and CO/CO2 off-gassing. (however, without combustion CO/CO2 off-gassing is << Water vapor)

:agreed:

They could purge the autoclave with Argon.

Yeah but then all the shit comes out... and maybe it's enough to combust. :shrug:

 

[Leon]

Wirelessly posted (Mjolnir: Opera/9.80 (J2ME/MIDP; Opera Mini/4.2.21992/21.549; U; en) Presto/2.5.25 Version/10.54)

Well, you'de still have your vacuum, it'd just be a mostly argon space to keep things quiet :lol:

You'd have to do some DiffEQ to figure out the gas flow sccm's to keep things non-conbustable.

Observation: we're talking process controls and engineering here. Where are the tone snobs? :lol:

 

[Seanbabs]

Wirelessly posted (Mjolnir: Opera/9.80 (J2ME/MIDP; Opera Mini/4.2.21992/21.549; U; en) Presto/2.5.25 Version/10.54)

Observation: we're talking process controls and engineering here. Where are the tone snobs? :lol:

We probably chased them out while we were :leon:ing out. :lol:

 

[Leon]

:agreed:

 

[Soopahmahn]

Good riddance, with all the talking and the tweaking and the ALNICO mwa-hey, bwa-hai.

 

[Leon]

GLAVIN.

 

[technomancer]

(sorry, had to be done even though I'm a software engineer :lol

 

[eleven59]