Tempered glass is known as safety glass, widely used in high-rise buildings, windows and doors, glass curtain walls, indoor partition glass, light roof, sightseeing elevator access, furniture, glass guardrails and high floors open to the outside of the window above, this is because the tempered glass in the broken, the fragments will not be a sharp sharp corners, and will break into uniform small particles, reducing the potential for human injury.

General common glass in the broken, resulting in a sharp tip is very easy to children and the impact of the person cut, which is directly on the human body has the role of injury. Toughened glass and ordinary glass after broken is not a sharp object, this is the main difference between toughened glass and ordinary glass. Due to the tempered glass broken, the fragments will break into uniform small particles and no common glass knife-like sharp corners, which is known as safety glass and is widely used in automobiles, interior decoration, as well as high floors to open the window. General common glass broken sharp knife-like sharp corners can easily cut children or crashers, resulting in personal injury. After the glass is broken into small particles or knife-like this is the most important difference between tempered glass and ordinary glass. But in the project inspection, moving to use this destructive test is undoubtedly unrealistic.

So how do customers know that the glass they buy is not tempered glass?

Toughened glass is ordinary annealed glass is first cut to the required size, and then heated to close to the softening point, and then after it is made by rapid and uniform cooling. After the glass is toughened, it develops a uniform compressive stress on the surface, while a tensile stress develops inside the glass, which after being made in this way leads to a substantial improvement in the performance of the glass, not only in tensile strength, which is three times that of ordinary glass, but also in impact resistance, which is more than five times that of ordinary glass.

It is because of this feature, the stress characteristics become an important basis for judging the authenticity of tempered glass, tempered glass can be seen through the polarized light sheet in the glass all over the colorful stripes, if observed in the surface layer of the glass, it is possible to see the black and white spots, and the polarized light sheet is invisible to the naked eye, but you can use the lens of the camera can be seen, the observation of the time to pay attention to the adjustment of the light source, which will be easier to observe. This will be easier to observe.