Tempered glass is secondary processing of flat glass products, glass processing can be divided into physical and chemical steel steel method. Physical tempered glass, also known as hardening. When it is the ordinary plate glass is heated to near the glass softening temperature (600 ℃) in the furnace, the deformation by itself to eliminate the internal stress, and then removed from the glass furnace, and then high-pressure cold air blowing nozzles long glass both sides, quickly and uniformly cooled to room temperature to obtain glass. The glass in the internal tension, external compression stress glass studio, once partial breakage, stress relief will occur 5mm tempered glass, the glass is broken into numerous pieces, these small fragments with no sharp edges and corners glass, easy wounding. Building templates folding edited this paragraph ordinary glass broken sharp knife-like sharp corners is easy to cut child or impactor, causing personal injury. After the glass is broken into small particles or knife-like glass and ordinary glass that is the main difference between the way. But in the engineering inspection, frequently use this destructive inspection is undoubtedly unrealistic. So how can you know whether to buy it is not tempered it? This has to be analyzed from the glass manufacturing principles, ordinary annealed glass, tempered glass is first cut to the desired size, then heated to near the softening point, then obtain rapid and uniform cooling. After treatment of steel glass surface to form a uniform compressive stress tempered glass door, and the internal tensile stress is formed, the performance of the glass can be greatly improved, more than three times the tensile strength of the latter, the impact force is more than five times the latter . It is this characteristic, the stress characteristics become an important symbol of true and false identification of tempered glass, glass that can be seen through polarized light colored stripe on the side of the glass sheet, and in the observation of the surface layer of the glass, you can see the black and white white spots. Polarizing sheet can be found at the camera lens or glasses, to adjust the light source observed, it is easier to observe. On each glass has a quality and safety certification mark .. 3c glass cabinet | Yaohui trusted (authenticated) | Heze tempered by Jinan Glass Co., Ltd. Yaohui. Jinan Yaohui Glass Co., Ltd. (www.jyhhc.com/) Shandong Jinan, architectural glass leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yaohui glass in Jinan leadership with the staff warmly welcome all inquiries negotiations to create the Jinan Yaohui glass better future.