Before understanding tempered glass, first we need to know what glass is? Glass is an amorphous inorganic non-metallic material, generally composed of a variety of inorganic mineral raw materials (such as quartz sand, borax, boric acid, barite, limestone, barium carbonate, feldspar, soda ash, etc.) plus a small amount of auxiliary raw materials. Its main components are silicon dioxide and other oxides.

The production of tempered glass is divided into physical tempering and chemical tempering. According to the degree of toughening can be divided into fully tempered glass, semi-tempered glass and partially tempered glass. Physical tempering is further divided into air-cooled, liquid-cooled and particulate tempering and other kinds. It is to heat the glass in the tempering furnace to a certain degree, and then cool down uniformly and quickly to get tempered glass. The equipment of physical tempering is mainly tempering furnace, which consists of two parts: heating and quenching and cooling, and the delivery method is horizontal and vertical tempering furnace. The most common tempering method used in the world is the horizontal roller tempering method. The hardness of glass is enhanced after tempering and becomes 4-5 times harder than ordinary glass. Therefore, tempered glass is also called safety glass.

Tempered glass generally cannot be further processed after processing and fabrication. Cutting, punching, slotting, etc. are not allowed. If you encounter the size is not suitable, the difference is not large then you can grind on the edge machine for grinding, but the amount of grinding is limited, usually each edge can not be greater than half the thickness of the glass. For example, tempered glass, the maximum can be ground off

This is a superficial explanation of tempered glass, if you have the opportunity, a more detailed description of the tempered glass process. The arguments and expressions of the exposition are mostly borrowed from China Glass Network, Baidu Library and other resources.