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How does glass reboil create bubbles in molten glass?
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Glass reboil is a phenomenon that occurs when molten glass experiences a rise in temperature, leading to the rapid exsolution of gases that were previously dissolved within the melt.1
As the temperature increases, these dissolved gases come out of solution and nucleate, forming bubbles within the glass. This process is distinct from the initial gas formation caused by the decomposition of raw materials during the melting phase. While the conditioning chamber is designed to remove fine bubbles by dissolving them back into the glass, reboil can compromise the quality of the final product by reintroducing these gas pockets as the glass moves toward the working end of the furnace.12