Glass Science &Technology Magazin | United States America (US)

Create: 2022-08-20 Update: 2025-07-09 21:04:39

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ثانیه ها در تمپرینگ شیشه
🔹ثانیه صفر- شیشه وارد کوره نشده است و در نتیجه هنوز بر شیشه هیچ تنشی وارد نمی گردد.
🔸ثانیه 20- شیشه در درون کوره قرار گرفته و در نتیجه انبساط سطح بر اثر حرارت موجب فشار می گردد.
🔹ثانیه 70 - در این حالت اندک اندک اختلاف دمایی که بین سطح و داخل در ابتدا وجود داشت رو به کاهش می گذارد.
🔸ثانیه 140- شیشه در بالای نقطه نرم شوندگی خود قرار گرفته است و مشاهده می شود که هیچ تنشی بر شیشه وارد نمی گردد.
🔹ثانیه 160- شیشه کوینچ می شود.
🔸ثانیه 165- کوینچ شیشه یه پایان می رسد و کشش کمی در سطح مشاهده می شود.
🔹ثانیه 175- سرعت سردکردن بالاست و در نتیجه در سطح کشش مشاهده می شود.
🔸ثانیه 230- دمای نرمالیزاسیون – در این مرحله تنش های نرمال ایجاد می گردد.
🔹ثانیه 320-شیشه تمپر شده است.

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Telegram new update brings infinite reactions, emoji statuses

Encrypted messaging app Telegram has announced that it is rolling out a new update that gives users more ways to use new emojis to express how they are feeling -- with infinite reactions and emoji statuses. The company said that premium users can pick reactions from an infinite selection of custom emojis. To make choosing from thousands of emojis easier, they can now attach up to three reactions per message.

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