Because tempered glass breaks into uniform small particles without the sharp corners of a typical glass blade, it is called glass and widely used in automobiles, interior decoration, and kitchenware.

In the home, the sharp knife shaped corners of broken glass can easily cut children or impact people, causing damage to their bodies. The main difference between tempered glass and ordinary glass is whether the glass breaks into small particles or a blade shape. But in engineering inspections, it is undoubtedly unrealistic to always choose such destructive inspections. So how can I know if what I bought is tempered glass?

This still needs to be analyzed from the manufacturing principle of tempered glass. Tempered glass is obtained by cutting general annealed glass into the required size, heating it to a near softening point, and then rapidly and uniformly cooling it. After tempering treatment, uniform pressure is formed on the surface of the glass, while tension is formed inside, greatly improving the functionality of the glass. The tensile strength is more than 3 times that of ordinary glass, and the impact resistance is more than 5 times that of ordinary glass.

It is precisely this feature that makes the tension characteristic an important indicator for distinguishing between genuine and fake tempered glass. That is, tempered glass can see colorful stripes at the edges of the glass through polarizing film, and black and white spots can be seen on the surface of the glass through investigation. Polarized light plates can be found in camera lenses or glasses. When conducting investigations, pay attention to adjusting the light source, which makes the investigation easier.

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