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Old 09-02-2018, 01:17 PM
Jesse Bogenrief Jesse Bogenrief is offline
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Glass in the tank

Looking for advise on how to handle the glass i have in my furnace. I went out of town and my furnace shut off while i was gone. It got down to 400 or so degrees and was off for about 30 hrs. i slowly brought it back up and want advice on the glass. Is it useable? Is there certain precautions i should take or issues to watch out for? i understand it will have ropes and other nasty things but can i run pumpkins and ornaments out of it? Is it fine? should i anneal it different? Thank you
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Old 09-02-2018, 04:23 PM
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Pete VanderLaan Pete VanderLaan is offline
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If it's a tank, it depends on what the tank is made of. AZS can be seriously damaged doing this stuff but your glass would just have a lot of stones. If it's a pot, you need to be concerned with cracking the pot bringing it back up too fast ( or just bringing it back up at all). Not so many stones but maybe a broken pot. Bring it up slow.

Excellent choice of glass for pumpkins in my opinion.
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Old 09-02-2018, 11:15 PM
Chris Lowry Chris Lowry is offline
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Iíve wondered about this... with a pot is it more likely to crack on the way down or up, if itís full of glass
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Old 09-03-2018, 08:07 AM
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Pete VanderLaan Pete VanderLaan is offline
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Up. Always up. The pot is never completely full so the refractory heats up unevenly in the worst possible way. You need to bring it up really slowly as in 20-25 F per hour. The bigger the pot, the slower you go. It still may not work.
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Old 09-05-2018, 11:57 AM
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Crashed to room temp over a about 4 days that furnace holds heat well.


Anyway, just set it to 20f and hour going up to 1700f and walked away. Came back once it leveled out at 1700f for a 1/2 day and ran it up full tilt boogie. The 1/2 day at 1700f was not planned just life keeping me from getting to it.

After this month we will be pulling this guy off line and doing a rebuild to switch into SP batch. It is just time not because we are switching glass more just happens to be the right time for a new pot. Should be interesting to get a look at the inside after a solid 1 and 1/2 on C-cullet as one of the first ones to drop the dime on melting it back when Pete first got it in town. I like the glass but based on the amount of damage to the Moly slots at the top I am more than interested to do a full assessment of the furnace after pulling the crown off.

Last edited by Scott Novota; 09-05-2018 at 12:00 PM.
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Old 09-05-2018, 01:00 PM
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Quote:
Originally Posted by Scott Novota View Post
Crashed to room temp over a about 4 days that furnace holds heat well.


Anyway, just set it to 20f and hour going up to 1700f and walked away. Came back once it leveled out at 1700f for a 1/2 day and ran it up full tilt boogie. The 1/2 day at 1700f was not planned just life keeping me from getting to it.

After this month we will be pulling this guy off line and doing a rebuild to switch into SP batch. It is just time not because we are switching glass more just happens to be the right time for a new pot. Should be interesting to get a look at the inside after a solid 1 and 1/2 on C-cullet as one of the first ones to drop the dime on melting it back when Pete first got it in town. I like the glass but based on the amount of damage to the Moly slots at the top I am more than interested to do a full assessment of the furnace after pulling the crown off.
Y'all lost power from Gordon?
Please keep us updated on the furnace.
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Old 09-15-2018, 02:19 PM
Paul Thompson Paul Thompson is offline
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Red face

Quote:
Originally Posted by Scott Novota View Post
...

After this month we will be pulling this guy off line and doing a rebuild to switch into SP batch...
Pardon my ignorance; I thought there was something about melting batch that required combustion. I. E. Not an electric furnace.
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