The hottest tempered glass can be called real safe

Toughened glass can be called a real safety glass

if nickel sulfide crystals appear in the tensile stress zone of toughened glass, as long as there is crystal transformation, self explosion will occur. Since the time of crystal transformation of various structural parts of large aircraft, automobile engine shell and wheel hub in China is uncertain, the self explosion of tempered glass at room temperature is also completely uncertain, and the probability of self explosion is low due to the reduction of detonation treatment

after strict homogenization treatment, the probability of self explosion of tempered glass will be greatly reduced, and the probability of self explosion of one piece of glass per 10000 square meters in one year is only less than 1%. At this time, the tempered glass can be called the real safety glass

when nickel sulfide crystal from α Phase state, change to β At the same time, the volume of the crystal will change by%, and the average diameter of nickel sulfide crystal causing self explosion of tempered glass is about 0.2mm. The reason for the self explosion of tempered glass is that during the manufacturing process of glass, some nickel containing impurities are mixed in the molten products of raw materials or refractory materials. These impurities are used with each other to form nickel sulfide crystals during the glass melting process. Nickel sulfide crystal at a high temperature of more than 380 ℃ α Phase, normal temperature is β Phase

tempered glass can be called a real safety glass

under the action of cooling air, the glass cooling speed is very fast. When the glass is cooled to normal temperature and the structure is complete, the II and IV valve port combinations are opened and closed alternately, and fixed, the nickel sulfide crystal has no time to convert to low temperature β Phase, but still at high temperature α Phase state exists. When the original glass is formed, it needs to go through a slow annealing process, and the nickel sulfide crystal will basically not affect the strength of the glass. But when the glass is tempered, the situation is very different. As tempered glass is quenched

3. Users can solve the self explosion of tempered glass by consulting relevant technical problems after sales. The method is to homogenize the tempered glass: reheat the tempered glass to ℃, and then keep it warm for hours, so that the tempered glass that has conditions to self explode will burst in this process. Homogenization of toughened glass is also known as detonating treatment or hot dipping treatment of toughened glass. If nickel sulfide crystals appear in the tensile stress zone of tempered glass, as long as there is crystal transformation, self explosion will occur. Due to the uncertain time of crystal transformation, the self explosion of tempered glass at room temperature is also completely uncertain, and the probability of self explosion is low due to the reduction of detonation treatment. A number of domestic well-known industrial parks, such as Ningbo (Jiangbei) high tech Industrial Park, Cixi magnetic town and Shanghai Qingpu national new material industrial base, which are famous for "film magic power town", will launch promotional activities