В glass tempering process is a method used to strengthen glass, делает его гораздо более устойчивым к ударам, термический стресс, и поломка. Процесс включает в себя нагрев стекла до высокой температуры, а затем быстрое его охлаждение, чтобы создать внутреннее напряжение., что увеличивает прочность стекла.
Steps in the Glass Tempering Process
Резка и формирование
The glass is first cut and shaped to the desired dimensions. It’s important that all edges are smooth because sharp edges can result in weaknesses during the tempering process.
Обогрев
The glass is heated to a temperature between 600°C (1112°Ф) and 650°C (1202°Ф). На данном этапе, the glass becomes soft and malleable, but it doesn’t melt.
Тушение (Быстрое охлаждение)
After the glass reaches the desired temperature, it is quickly cooled using high-pressure air jets. The cooling happens very quickly, typically within 1 Для 2 минуты.
Outer Surface Cooling: The outer surfaces of the glass cool down rapidly, solidifying quickly.
Inner Core: The inner part of the glass cools more slowly, creating a compression layer on the outer surface and tension inside the glass.
Strengthening
This combination of compressed outer layers and tension inside gives tempered glass its characteristic strength. The compressive stress makes the glass much more resistant to cracks and breakage.
Edge Inspection and Quality Control
After tempering, the glass is checked for quality. If the glass has any defects, it may need to be discarded or reprocessed. Кроме того, tempered glass cannot be cut or altered after tempering without compromising its strength, so this inspection step is important before final installation.
Characteristics of Tempered Glass
Прочность: Tempered glass is approximately 4 Для 5 times stronger than regular, annealed glass of the same thickness.
Безопасность: When tempered glass breaks, it fractures into small, blunt pieces instead of sharp shards, reducing the risk of injury.
Thermal Resistance: Tempered glass is more resistant to thermal stress and can withstand temperature differences up to about 200°F (93°С) without breaking.
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