Because of the broken tempered glass, debris will break into small particles uniformly and there is no universal glass cutter shaped corners, which are called safety glass is widely used in automotive, interior being.

Broken glass after an ordinary sharp knife-like sharp corners could easily cut a child or impactor, causing personal injury. After the glass is broken into small particles or knife-like tempered glass and ordinary glass which is the main difference between the way. But in the engineering inspection, motionless with this destructive testing is undoubtedly unrealistic.

So how can you know whether to buy it is tempered glass or not?

This has to be analyzed from a tempered glass manufacturing principles, ordinary annealed glass, tempered glass is first cut to the required size, then heated to near the softening point, then obtain rapid and uniform cooling. After the steel processing glass surface to form a uniform compressive stress, while the internal tensile stress is formed, so that the glass can be greatly improved performance, more than three times the tensile strength of the latter, the impact force is more than five times the latter.

It is this characteristic, stress characteristics to become an important symbol to identify genuine and fake tempered glass, tempered glass that can be seen through the polarizing film colored stripes on the side of the glass, and in the observation of the surface layer of glass, you can see the black and white spots. Polarizing film can be found in the camera lens or glasses, to adjust the light source observed, it is easier to observe.