Ordinary glass appeared in ancient Egypt, and who was the inventor of this popular and useful material is no longer known, as well as unknown who invented the wheel. But if we consider the history of how tempered glass appeared, then there is a clear pattern of how the most ordinary materials evolve under the influence of the needs of civilization. As a result of the research, SSG engineers in 1929 developed a special technology in which glass warmed up above the softening temperature and then rapidly cooled by jets of cold air. As a result of this procedure, the outer surface of the glass was cooled much faster than the inner surface and this gave rise to the residual compressive stress in the inner layers of the glass. Due to this residual stress, glass acquires a higher resistance to mechanical damage, and in the case of damage, again due to the fact that there is excess stress in the glass, it breaks into many small fragments that do not have sharp edges that are formed when ord...
Tempered glass has many benefits and uses which makes it a popular glass used in many home and commercial building projects