in the essential part of doors and windows, the early building doors and windows glass was a single-layer flat glass, which has developed into today's tempered glass, hollow glass, laminated glass, bullet-proof glass, etc. Nowadays, most door and window products use tempered glass.
1. How to identify tempered glass and ordinary glass?
1. Look at the glass logo
see if there is a tempered 3C mark on the corner of the glass. Most of the 3c marks (the ones that cannot be scraped off) are tempered glass. The processing procedure of tempered glass is to cut the general float glass into the required size first, then edge grinding, cleaning and forced certification ccc logo with ink, after the finished product is fired in toughening furnace, the glass cannot be cut or processed. And the ink is passing high? Orchidism, G Xie, gun breech bad, Copy? A? The 3C logo can be scraped off by hand, which can basically determine that it is fake tempered glass.)
2. Check whether it is slightly deformed
from the side to see whether the glass is slightly deformed, because the glass passes high? Can I cover the flat? Thistle? Gentiana Gentiana hard A У mu Qiaoyun hit the Falcon?? ǔ J? /p>
3. Look at the fragments of glass
after the glass is crushed, it is massive and oblique, which is very easy to die. Tempered laminated glass is granular after being crushed, the edge is very dull, and it is not easy to die.
2. Tempered glass is divided by shape: the thickness of flat tempered glass and curved tempered glass is usually 4, 5, 6, 8, 10, 12, 15, eight kinds of 19mm; There are four kinds of commonly used curved tempered glass thickness: 5, 6, 8 and 10mm.
3. Tempered glass is divided according to process: physical tempered glass and chemical tempered physical tempered glass are processed by quenching or air cooling quenching under specific process conditions. Chemically-strengthened glass is to process sheet glass or Float Glass by ion exchange to change the molecules on the glass surface and form a layer of compressive stress layer on the glass surface.
4. Features of tempered glass:
1. High impact strength
4~5 times higher than ordinary glass; High bending strength, 5 times higher than sheet glass; Good thermal stability, able to withstand the temperature difference change of 200 ℃; And bright, clean, transparent, can not be cut and other characteristics. In case of strong impact damage, the fragments are dispersed in fine particles without sharp edges and corners, so they are also called safety glass.
2. The thickness will be slightly thinner after tempering
the reason for thinning is that after the glass is softened by hot melt, it is cooled rapidly by strong wind force to make its glass? Acetylene roast? .? Gu Pu?? Round A г pieces? OK? Still only? Rake? M **G Xie Yi? -6mm glass thins 0.2-0.8mm after tempering, and 8-19mm glass thins 0.9-1.8mm after tempering. The specific degree depends on the equipment.
