А печь для закалки стекла is a specialized machine used to strengthen glass by heating and rapid cooling, создание закаленного стекла, которое более долговечно и безопасно, чем обычное отожженное стекло.. Процесс включает в себя точный контроль температуры и охлаждение, чтобы вызвать сжимающие напряжения на поверхности стекла.. Вот как это работает:
1. Pre-Processing
Before entering the tempering furnace:
Cutting and Edging:
Glass sheets are cut to the desired size and edges are smoothed to prevent breakage during tempering.
Стирка:
Glass is thoroughly cleaned to remove dirt and contaminants that might affect the heating and cooling process.
Инспекция:
Glass is checked for defects like chips or cracks that could cause failure during tempering.
2. Heating Stage
Загрузка:
Glass sheets are loaded onto a conveyor system or rollers that transport them through the furnace.
Heating Chamber:
Glass is heated to a temperature of approximately 620–700°C (1148–1292°F), depending on the type and thickness of the glass.
Равномерное отопление:
Electric or gas-fired heaters provide consistent and uniform heat.
Convection and/or radiant heating ensures the glass reaches its softening point without deforming.
Контроль температуры:
Sensors monitor the glass temperature to avoid overheating or uneven heating.
3. Soaking Period
Thermal Equalization:
Glass is held at the target temperature for a short period to ensure the entire sheet is uniformly heated.
Proper soaking prevents stress imbalances during the cooling phase.
4. Быстрое охлаждение (Тушение)
Cooling System:
The heated glass exits the furnace into the quenching section, where high-velocity air jets cool it rapidly.
Air Nozzles:
Jets of cool air are blown onto both surfaces of the glass simultaneously.
Stress Induction:
The rapid cooling causes the outer surfaces of the glass to contract quickly, creating a layer of compressive stress.
The interior cools more slowly, resulting in tensile stress at the core.
Controlled Cooling:
The process is carefully controlled to avoid cracking or deformation.
5. Unloading and Inspection
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More detailed information about the working principle of glass tempering furnace can click to visit: https://www.shencglass.com/en/a/news/glass-tempering-furnace-working-principle.html
