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Heat treated glass is glass that under processing with tempering furnace. With temperatures of 670-720℃ in the tempering oven and fast cooling, the glass surface and interior compression are changed and kept in relative balance. Heat treated glass includes tempered glass, heat strengthened glass, heat soaked glass, etc. The strength of heat treated glass is typically 2-5 times that of float glass and helps prevent possible injuries. Heat treated glass is used in balustrades, balconies, pool fences, point-supported glass facades, etc. This type of custom architectural glass is often produced in glass bulk to meet the demands of large-scale construction projects.
1: Cutting
The glass is first cut into the desired size. Any additional fabrication, such as holes or edge treatment, is done at this stage. Once the glass is heat-treated, it cannot be cut or altered.
2: Inspection
The glass is thoroughly inspected for any imperfections that might cause breakage during the heat-treating process.
3: Washing
The glass is then washed to remove any dirt or impurities.
4: Heating
The glass is heated in a tempering oven at a temperature of approximately 620 degrees Celsius (1150 degrees Fahrenheit). This is above the transition temperature that makes the glass soft and pliable.
5: Quenching
The heated glass is then rapidly cooled in a process known as quenching. High-pressure air blasts the surface of the glass from various angles. This rapid cooling process creates a state of high compression on the surface of the glass while the center remains in tension.
6: Inspection
The final step is another inspection to ensure the glass has been properly tempered. This is usually done using a polariscope to check for stress points or imperfections.
Yes, heat-treated glass is more resistant to thermal stress compared to regular glass. The tempering process strengthens the glass and increases its thermal stability. This means it can withstand higher temperature differences and is less likely to crack or break due to rapid temperature changes. This makes heat-treated glass ideal for applications where it may be exposed to high heat or rapid temperature fluctuations, such as in oven doors, fireplace screens, or buildings with a high amount of sunlight.
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