Analysis of the method of distinguishing tempered glass from ordinary glass

[China Glass Net] Resolution 1: Breaking Because the tempered glass is broken, the pieces will break into uniform small particles and have no sharp edges around the glass knife. They are then called safety glass and are widely used in cars and interior decoration. In the home, usually the sharp knife-shaped sharp corners after the glass is broken are very simple to cut the child or the impacter, causing damage to the human body. After the glass is broken, it becomes a small particle or a knife shape. This is a major difference between tempered glass and ordinary glass. However, in the engineering inspection, it is unrealistic to choose this destructive inspection.

Resolution 2: The polarizer is also analyzed from the principle of tempered glass. The tempered glass is obtained by first cutting the normally annealed glass into a desired size, then heating it to a near softening point, and then uniformly cooling it. After tempering, the glass surface forms a uniform compressive stress, while the inside forms a tensile stress, which greatly improves the function of the glass. The tensile strength is more than three times that of the latter, and the impact resistance is more than five times that of the latter. It is precisely this feature that the stress characteristic becomes an important symbol for distinguishing between true and false tempered glass, that is, tempered glass can see colorful stripes on the edge of the glass through the polarizing plate, and can be seen in the surface layer of the glass. Black and white spots. Polarizers can be found in camera lenses or in glasses. Keep an eye on the adjustment of the light source during the survey, which makes it easier to investigate.

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