The reason why tempered glass is called safety glass is that it is widely used in high-rise building doors and windows, glass curtain walls, indoor partition glass, lighting ceilings, sightseeing elevator passages, furniture, glass guardrails and open windows on high floors. After being broken, the fragments will not become sharp corners, but will be broken into uniform small particles, which reduces the possible damage to the human body.

After the ordinary glass is broken, the sharp tip of the knife can easily cut the child and the striker, which has a direct effect on the human body. Whether tempered glass and ordinary glass are sharp objects after being broken is the main difference between tempered glass and ordinary glass. Since tempered glass is broken, the fragments will be broken into uniform small particles and there is no sharp corners like glass knives, so it is called safety glass and is widely used in automobiles, interior decoration, and high-rise windows. Generally, the sharp knife-shaped sharp corners of ordinary glass can easily cut children or strikers, causing personal injury. Whether the glass is broken into small particles or knife-like is the main difference between tempered glass and ordinary glass. But in engineering inspection, it is undoubtedly unrealistic to use this destructive inspection at every turn.

So how do customers know whether the glass they buy is tempered glass?

Tempered glass is made by cutting ordinary annealed glass to the required size, then heating it to a near softening point, and then rapidly and uniformly cooling it. After the glass is tempered, uniform compressive stress will be formed on its surface, while tensile stress will be formed inside the glass, which will greatly improve the performance of the glass after production, not only the tensile strength is also improved, it is an ordinary glass. It is three times that of ordinary glass, and it also improves the impact resistance, which is more than 5 times that of ordinary glass.

It is precisely because of this feature that stress characteristics become an important basis for judging the authenticity of tempered glass. Tempered glass can see colored stripes all over the glass through polarizers. If you observe it on the surface of the glass, you can see black and white. Alternating spots, and polarizers are invisible to the naked eye, but can be seen with the lens of the camera. When observing, you must pay attention to the adjustment of the light source, which will make it easier to observe.