Tempered Glass,Toughened Glass, Prestressed glass, Reinforced glass

Tempered glass/Reinforced glass is a type of safety glass. Toughened glass is actually a kind of prestressed glass, in order to improve the strength of glass, usually use chemical or physical methods, the formation of compressive stress on the surface of glass, glass under external force first offset surface stress, so as to improve the bearing capacity, enhance the glass itself resistance to wind pressure, heat and cold, impact, etc.
⒈ Physical tempered glass is also known as hardened tempered glass. It is the ordinary plate glass in the heating furnace heating to close to the softening temperature of the glass (600℃), through its own deformation to eliminate the internal stress, and then the glass out of the heating furnace, and then use a multi-head nozzle to blow the high pressure cold air to both sides of the glass, so that it is rapidly and evenly cooled to room temperature, toughened glass can be made. This kind of glass in the internal tension, external pressure stress state, once the local damage, will occur stress release, glass is broken into numerous small pieces, these small pieces without sharp edges and corners, not easy to hurt.
Chemical tempered glass is to improve the strength of glass by changing the chemical composition of the surface of the glass, which is generally tempered by ion exchange method. The method is to contain alkali metal ions of silicate glass immersed into the molten state of lithium salt, so that the glass surface Na or K ion and lithium ion exchange, the surface of the formation of lithium ion exchange layer, due to the expansion coefficient of lithium is less than Na or K ion, resulting in the cooling process of the outer shrinkage and the inner shrinkage of the larger. When cooled to room temperature, the glass is also in a state of inner tension, outer pressure, the effect is similar to physical toughened glass.
Matters need attention：
Cutting, drilling and edging of glass must be completed before tempering.
Products should be packed in containers or wooden cases. Each piece of glass shall be packed in a plastic bag or paper, and the space between the glass and the packing box shall be filled with light soft materials that are not likely to cause appearance defects such as scratches on the glass. The specific requirements shall conform to the relevant national standards.