Tempered glass,also known as tempered glass,is a kind of prestressed glass.It uses a physical or chemical method to form a compressive stress layer on the surface of the glass.The glass itself has a high compressive strength and does not cause damage.When the glass is subjected to an external force,the pressure layer can offset part of the tensile stress to avoid cracking of the glass.Although the inside of the tempered glass is in a state of large tensile stress,the interior of the glass has no defects and does not cause damage,thereby improving.The purpose of glass strength.It is well known that microcracks on the surface of a material cause a major cause of material cracking.Because the micro cracks will gradually expand under the action of tension,and finally crack along the crack.After the is tempered,due to the large compressive stress on the surface,the microcracks on the surface of the glass can be made finer and even"healed"under the action of extrusion.For secondary processing of processing of flat glass in tempered glass,the processing of tempered glass can be divided into phy sical tempering method and chemical tempering method.Physical tempered glass is also known as hardened tempered glass.When the ordinary flat glass is heated in the heating furnace to hear the softening temperature of the glass,the internal stress is removed by its own deofrmation and then
the glass is removed from the heating furnace,and then the glass is removed from the heatingfurnace and the high pressure cold air is blown to bothe sides of the glass by the multi-head nozzle,so that the tempered glass can be obtained by rapidly and uniformly cooling to room temperature.This kind of glass is in a state of internal tension and externally stressed.Once local damage occurs,stress is released,and the glass is broken into numerous small pieces.These small pieces have no sharp edges and are not easy to injure people.In the production process of temepred glass,the most important influence on the quality of the products is how to make the glass form a large and uniform internal stress.The biggest impact on production is how to prevent cracking and deofrmation.
