Tempered Glass

SKLO+GLAS production department of glass thermal processing is equipped with Tamglass equipment.

Tamglass is a trade mark for Glastron equipment. Glastron has been holding leadership positions in supplying of high-quality equipment for the glass processing already for more then 40 years.

Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared to that of usual glass. Its production is executed by glass sheets heating with temperature about 600°C. Then glass is to be rapidly cooled with forced air drafts. Tempering creates balanced internal stresses which causes broken glass to crumble into small granular crumbs instead of splintering into jagged shatters. The granular crumbs are safer. As a result of its safety and strength, tempered glass is used in variety of demanding applications including passenger vehicle windows, shower doors, architectural glass doors and tables, refrigerator trays and as a component of bulletproof glass.

Glass with surface stress at least 69MPa is considered as toughened. Glass with surface stress exceeding 100MPa is considered as safety glass. The more the surface stress is, the less glass shatters will there be after breaking.
Any cutting or grinding is to be done prior to tempering ( it causes glass fracturing). Glass surface can only be processed by chemical etching.

Heat-strengthened glass is glass that was heat treated to cause surface compression, but in contrast to tempered glass it does not break up into small cubes. In case of breaking heat-strengthened glass breaks into sharp pieces that are typically somewhat smaller than those found after breaking of annealed glass and is intermediate in strength between annealed and toughened glasses.