不良・失敗
devitrification
Japanese: 失透
A phenomenon in which crystals form on the surface or inside glass that has been exposed to high temperatures for an extended period, resulting in cloudiness, wrinkles, or opacity. / Note: The basic preventive measure is to pass through the 600–750°C range quickly.
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Devitrification is a phenomenon in which crystals form on the surface or within glass that has been exposed to high temperatures for an extended period, resulting in cloudiness, wrinkles, and opacity. In soda-lime glass, minerals such as devitrite, β-wallastonite, and α-cristobalite precipitate.
The basic principle of prevention is to quickly pass the item through the danger zone—which is approximately 600–750°C—to remove surface grease and dust.
This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.