Rameshwaram Build Mat Pvt. Ltd.

Heat strengthened glass is a semi tempered glass, which has been strengthened thermally by inducing a surface compression of 6000 to 9000 psi as compared to a range of 11000 to 20000 psi in case of fully tempered glass.

It is two times stronger than annealed glass. Though it is not considered to be a safety glass, it is widely used on building facades due to better optics.

Process

Trutuf heat strengthened glass is made on state of the art electrically heated horizontal furnace, which heats the glass to an uniform temperature of approximately 660ºC. Ceramic rolls convey the glass through these furnaces at speeds regulated to ensure temperature uniformity and minimal optical distortions. The heat strengthened process parallels the traditional process of glass tempering, except that the heating temperatures are lower and the cooling cycle is less rapid. During production, non-destructive verification of the range of stresses is done by using grazing angle surface polarimeter to ensure the right surface compression.

Characteristics

Strength : Four to five times more stronger than basic float glass.

High Thermal Shock Strength : Can withstand temperature differentials up to 250ºC.

Safety : Will break into small, relatively harmless fragments. This substantially reduces the likelihood of injury to people as there are no jagged edges or sharp corners.

Light and Heat transmission properties: Do not change due to tempering and remain the same as in unprocessed glass unless laminated or double glazed.

Alterations: Tempered glass cannot be further cut, ground, drilled or worked upon. All these processes are completed prior to its tempering, in accordance with your drawings, sizes or templates.

Applications

Heat Strengthened glass is best suited for spandrel and vision panels of curtain walls and structural glazing as it safeguards against thermal breakages providing better optics than fully tempered glass provided the calculations on wind loading are within safe limits.

It is ideal for making laminated glass panels for safety combined with strength.

It is also used in complex glass combinations like - double glazed with one lite of laminated glass, pool sides, pool bottoms and aquariums etc.