Comparison of Tempered Glass and Ordinary Glass
The reason why tempered glass is called safety glass 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 high-rise windows that open to the outside. This is because tempered glass After being broken, its fragments will not become sharp corners, but will break into uniform small particles, reducing the possible damage to the human body.
After the ordinary glass is broken, the sharp knife tip produced is easy to cut the child and the striker, which directly has a harmful effect on the human body. Tempered glass and ordinary glass broken is not a sharp object, this is to distinguish the main difference between tempered glass and ordinary glass. After the tempered glass is broken, the fragments will be broken into uniform small particles and there is no common glass knife-shaped sharp corner, which is called safety glass and is widely used in automobiles, interior decoration, and high-rise windows. General ordinary glass broken sharp knife-like corners are easy to cut children or impactor, causing personal injury. After the glass is broken into small particles or knife-shaped This is the main difference between tempered glass and ordinary glass. However, in engineering inspection, it is undoubtedly unrealistic to use this destructive inspection at any time.
So how do customers know if the glass they bought is tempered glass?
Tempered glass is made by cutting ordinary annealed glass into the required size, then heating it to close to the softening point, and then cooling it quickly and evenly. After the glass is tempered, its surface forms a uniform compressive stress, and the interior of the glass will form a tensile stress, which will greatly improve the performance of the glass, not only the tensile strength is also improved, which is three times that of ordinary glass, but also improves the impact resistance, which is more than 5 times that of ordinary glass.
It is precisely because of this feature that the stress characteristic has become an important basis for judging the authenticity of tempered glass. Tempered glass can see colored stripes all over the glass through the polarized light plate. If you look at the surface of the glass, you can see black and white spots, while the polarized light plate is invisible to the naked eye, but it can be seen in the lens of the camera. When observing, you must pay attention to the adjustment of the light source, this will make it easier to observe.
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