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Old 07-22-2010, 01:44 PM
Pete VanderLaan's Avatar
Pete VanderLaan Pete VanderLaan is offline
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The support sounds good. Turn your melt down. Avoid shutdowns. I think the observation about turning it way down instead of off costs a lot less than replacing pots is a good one.. Just stay above 1100F.

Crucibles are really pretty tough but strength is really relative. It's always a trade off. When you melt a glass like 96, you get a very fluid glass at 2300F- too fluid. The wear on the pot is notable. It's really similar to Fluorine glasses. They aren't any more caustic than anything else. It's the low viscosity that the fluorines ( and the 96) have at regular working temps for a conventional soda lime that eat up your refractories. Imagine taking SP87 up to 2500F. The viscosities would be similar , the wear substantial. Glass really is the universal solvent.
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