Tempered glass is a safe and durable type of glass produced by subjecting it to a special process of tempering. This process changes the physical properties of the glass by applying great stress to the surface and internal structure of the glass. Tempered glass is also called toughened glass or reinforced glass.
The tempering process is carried out by heating the glass at a temperature of 600-700°C and then cooling it rapidly. This rapid cooling causes the outer surface of the glass to cool more quickly and the interior to cool more slowly. These different cooling rates create compressive stress on the surface of the glass and tensile stress on the inside. These voltage differences make the glass 5 times more durable than non-tempered glass.
The production process of tempered glass consists of the following steps:
Glass Washing: Glasses with completed edge processing are washed with pure water before being given to the tempering furnace. This process is not applied to painted glass.
IHeating: The glasses are placed in a special oven and exposed to temperatures of 650 – 700 C. This heating, which continues until the glass reaches its transition temperature, must occur homogeneously.
Quick Cooling (Quenching): A sudden cooling process is applied to the surface of the glass. This causes the surface of the glass to cool rapidly while the interior cools more slowly. This rapid cooling process causes different tensions to occur on the surface and center of the glass, thus increasing its strength.
The advantages of tempered glass are:
Security: : Tempered glass is five times more durable than flat glass and more resistant to impacts, scratches, and thermal shock. When broken, it turns into small, round pieces, reducing the risk of injury.
Durability: Tempered glass is more resistant to temperature differences and mechanical stress. Therefore, tempered glass has a longer lifespan and can withstand a variety of conditions.
Thermal Resistance:Due to its resistance to high-temperature changes (200C), tempered glass does not break when exposed to temperature differences.
Due to the durability and safety of glass, it is frequently used in architectural projects for glass facade cladding, glass partition walls, glass stair railings, glass doors and windows.