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How to distinguish whether the glass has been tempered in optical glass applications

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Update time : 2022-12-28 16:00:00

How to distinguish whether the glass has been tempered in the application of optical glass: because the strength of tempered glass is relatively high, after adding is broken, the fragments will break into uniform small particles and there is no universal glass knife shaped sharp Angle, which should be called safety glass and widely used in interior decoration. In the home, the sharp knife Angle of ordinary glass broken is easy to cut children or impinger, causing personal injury.

After optical glass is broken into small particles or knife shape, this is the main difference between tempered glass and ordinary glass. But in engineering inspection, it is no doubt unrealistic to use such destructive inspection at every turn. So how do you know if you're buying tempered glass?

This also has to be analyzed from the manufacturing principle of tempered glass, tempered glass is the ordinary annealed glass first cut into the required size, and then heated to close to the softening point, and then rapid uniform cooling. After tempering, uniform compressive stress is formed on the surface of the glass, and the internal tensile stress is formed, so that the performance of the glass can be greatly improved, the tensile strength is more than 3 times of the latter, the impact resistance is more than 5 times of the latter.

It is also this characteristic, stress characteristics become an important sign to identify the true and false toughened glass, that is, toughened glass can see color stripes through the polarized light plate on the side of the glass, and in the glass surface layer observation, you can see black and white spots. Polarizing lenses can be found in camera lenses or eyeglasses. Adjust the light source as you look, so it's easier to see. This method can distinguish whether it is ordinary glass or toughened glass without damaging the optical glass.

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