CraftWEB Hot Glass Talk  

Go Back   CraftWEB Hot Glass Talk > Hot Glass > General Hot Glass Discussion

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #18  
Old 12-10-2012, 04:34 PM
Chris Marriner Chris Marriner is offline
Registered User
 
Join Date: Apr 2012
Location: Palmetto, FL
Posts: 32
Chris Marriner is on a distinguished road
Crucibles... and wire melters

First post here - so I hope that this is in the right place... or at least an acceptable place...

I have a 14" High temp aluimina crucible.
I have it inside a custom - but similar design to an AIM wire melter.
The main lid is 3" brick with an access port door of 2" brick.
The main lid sits on top of the crucible - the thought was to keep the heat in - when opening the port to gather...

I’m guessing that the crucible has some insulating properties… and that when heating – the temp in the firing chamber will likely be different than inside the pot…

For example – I stuck my pyrometer into the air chamber above the pot – and it is about 200-220 degrees (750 degrees) less than the firing chamber (970 degrees)… Presently at 1440 firing - 1250 inside pot...

I assume that at some point this will even out… or should we have left approximately 1/2" for air flow??

Is this temo difference stressing out my pot and risking possible shock??

Is there a point where crucibles basically become just a vessel and transfer heat evenly because it’s lost it’s insulating property??

As it's heating up... I've got a lot of time to wonder about all these questions...!!!

THANKS!!
Reply With Quote
 


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 12:51 PM.


All published comments within these message boards are the opinions of its contributor and does not represent
the opinion(s) of the owner(s) of this website. Please see the Terms of Use file for more details.

Books to Help Artists Avoid Online Scams: Top 10 Email Scams | Social Media Scams

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
© CraftWEB.com. Opportunity Network. 2008. All Rights Reserved.