Tempered Building Glass
Many of the world’s most dramatic, visually breathtaking buildings involve large expanses of glass. These glass are called tempered building glass.But these architectural masterpieces often require that the glass be heat-treated to provide durability and/or safety. There are two processes for heat-treating glass: heat-strengthening and tempering. Both processes take place on the same processing equipment and involve heating the glass to approximately 1200 degrees, then force-cooling it to create surface and edge compression. Which process is required depends on the specific application of the glass.
Tempered glass, which also may be called safety glazing, is typically specified to provide security or to keep occupants safe wherever there is the potential for broken glass to hurt people if it becomes a projectile, such as in a fire, explosion, tornado or hurricane. Now the tempered building glass are basically been used for architecture.It is used for doors, windows,shower room and other hazardous locations. When shattered, tempered glass breaks into thousands of small particles.
To make tempered building glass, the glass is reheated to just below the melting point but air-cooled (quenched) quickly, which creates higher surface compression and/or edge compression in the glass. Tempering makes the glass four to five times stronger and safer than annealed or untreated glass. As a result, tempered glass is less likely to experience a thermal break.