The distribution of stresses in glass two tempered glass surface compressive stress, tensile stress in the core plate, the glass thickness of the stress distribution is similar to a parabola. Central Glass thickness parabolic vertex Weihai glass tables that tensile stress is greatest; both sides close to the glass surface compressive stress; zero stress surface located about 1/3 the thickness. By analyzing physical processes quenched steel Weihai glass tables, we can see the inside glass surface tension and the maximum tensile stress has roughly proportional to the value that tensile stress is compressive stress 1/2 ~ 1/3. Domestic manufacturers generally tempered glass surface tension will be set at about 100MPa Weihai glass table, the actual number of cases may be higher. Toughened its tensile stress is about 32MPa ~ 46MPa, the tensile strength of glass is 59MPa ~ 62MPa, nickel sulfide expansion as long as the tension generated in 30MPa, it is enough to trigger a self-destruct. If you reduce the surface stress Weihai glass table, a corresponding tensile stress will reduce its own glass itself, thus helping to reduce the incidence blew. American Standard ASTMC1048 range specified in the tempered glass surface stress greater than 69MPa; semi-tempered (thermally enhanced) glass is 24MPa ~ 52MPa. Standard BG17841 glass curtain wall is defined as half the steel stress range 24 <; δ≤69MPa. The new national standard GB15763.2-2005 implementation of China's "architectural safety glass - Part 2: glass" which the surface stress of not less than 90MPa. This is better than the old standard set forth in the 95MPa reduced 5MPa, it helps to reduce blew. Tempered glass in the furnace process requirements should be quickly uniformly heated to the desired temperature, which is glass heating stage of a principled requirement. Refers to the glass should be heated quickly in the shortest possible time to the tempering temperature, heating time is too long to avoid the glass to produce optical distortion, especially on the level of roller-steel equipment is concerned; even refers to the glass during heating the glass to do each zone temperature uniformity, the upper and lower surfaces of the heat evenly, baked surface and intermediate temperature uniformity. Glass heated to the required temperature, the furnace should be transferred as soon as possible, quickly quenched. Glass doors | Weihai tempered | Glass Yaohui trusted by Jinan Glass Co., Ltd. Yaohui. Jinan Yaohui Glass Co., Ltd. (www.jyhhc.com/) strong, credible, in Jinan, Shandong architectural glass industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Yaohui into the brilliant glass and you work for a better future!