Method for identifying tempered glass and ordinary glass
Methods for identifying tempered glass and ordinary glass:
1) With polarized sunglasses, you can see the colored markings, which should not be seen without tempering.
2) Turning the angle, it is also to see if there is embossing on the glass surface. You will see irregular deformation of the glass on the entire surface.
3) Look at the side. When the glass is tempered, it will soften. The flatness will be worse due to the roller table. When facing the surface, the gap in the middle is an ellipse. This is obvious.
4) The flatness of tempered glass is worse than that of ordinary glass. The simple method is to hold the two glasses face-to-face vertically and observe the two long sides of the two pieces of glass. Look at the long sides of the two pieces of glass. There are no obvious gaps between them. If there are gaps, they all have a certain arc shape. If it is, it should be tempered. Note that it is face to face, not face back. This is physical. Otherwise, look at the two exposed X-ray film. When you look at 70 degrees on the side, you should see the blue wind spot after tempering. The flatness of the glass is also significantly lower than that of the glass before tempering.
5) Bring a flat mirror in the sun. The tempered glass is flower, and the glass is not.
6) The tempering standard is that the high-temperature ink is printed on the glass by screen printing. In the process of glass tempering, the high-temperature ink is fused with the glass surface. Therefore, if the tempering mark on the glass is not wiped with hydrofluoric acid, it will not be removed (even The use of hydrofluoric acid will also leave a more visible trace.) Therefore, the easiest and straightforward way to see if the glass is tempered is to use a tempering standard.
7) You can use sharp objects to sculpt the edge of the glass (preferably where it will not be seen after installation in the future). If it is easy to scratch, it means that the glass is not tempered. If the surface of the glass is very hard, it is difficult to scratch. Injury, that means the glass has been tempered.
8) Breaking a piece of tempered glass, the pieces will break into average small particles and there is no common glass knife shape.
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