[China Glass Net] Glass is an indispensable part of doors and windows. The early building windows and doors are single-layer flat glass, which has been developed into tempered glass, insulating glass, laminated glass and bullet-proof glass. Most of today's door and window products use tempered glass. 1. Tempered glass is divided into shapes: flat tempered glass and curved tempered glass: Generally, the thickness of the flat tempered glass is more than four, five, six, six, eight, ten, twelve, fifteen, and nineteenth; the thickness of the more commonly used curved tempered glass is five, six, eight, and ten. Second, the performance of tempered glass: Tempered glass/Reinforced glass is a safety glass. Tempered glass is actually a type of prestressed glass. In order to increase the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass. When the glass is subjected to external force, the surface stress is first offset, thereby improving the bearing capacity and enhancing the resistance of the glass itself. Wind pressure, cold and heat, impact and so on. Third, the characteristics of tempered glass: 1. Tempered glass is a method in which high-quality float glass is heated close to the softening point, and the glass surface is rapidly cooled, so that the compressive stress is distributed on the glass surface, and the tensile stress is in the center layer. Because of the strong equal compressive stress, the tensile stress generated by the external pressure is offset by the strong compressive stress of the glass, thereby increasing the safety of the glass. 2, 4 to 5 times higher than ordinary glass; high bending strength, 5 times higher than ordinary flat glass; good thermal stability, can withstand 200 °C temperature difference; and smooth, transparent, non-cuttable and so on. In the case of super-strong impact damage, the fragments are scattered and fine particles, without sharp edges and corners, so it is also called safety glass. Fourth, how to distinguish between tempered glass and ordinary glass? 1. Look at the corners of the glass for the tempered 3C mark. The 3c mark (the kind that can't be scraped) is basically tempered glass. The processing procedure of tempered glass is to cut the ordinary float glass into the required size, then edging, cleaning, and using the ink to make the national compulsory certification ccc mark. After the tempering furnace is finished, the glass cannot be cut or processing. The tempering standard is that the high-temperature ink is printed on the glass through screen printing. In the process of glass tempering, the high-temperature ink and the glass surface blend together. Therefore, if the tempering mark on the glass is not scrubbed with hydrofluoric acid, it cannot be removed (even if hydrogen is used). Fluoric acid will also leave a more significant trace). 2, ordinary glass is broken after the large piece, with sharp corners, easy to hurt people. After the tempered glass is broken, it is granular, and the corners are very blunt, which is not easy to injure people. 3, with polarized sunglasses, can see the colorful markings, probably not visible without tempering. Mid Calf Socks,Calf High Socks,Mid Calf Length Socks,Mid High Socks HANGZHOU TOSHENG TRADING CO.,LTD , https://www.tongshengtrading.com
How to distinguish between tempered glass and ordinary glass?