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How To Improve The Capacity Of Tempered Glass
Jul 13, 2017



How to improve the capacity of Tempered Glass

Tempered Glass is glass of a kind of prestressing force actually, to enhance the strength of the glass, use the method of chemistry or physics normally, form in vitreous surface press stress, glass bears offset above all when outside force surface layer stress, so as to improve the bearing capacity, enhance the wind resistance glass itself, through sex, impact, etc.

The first is that the strength is several times higher than that of ordinary glass. The bending strength is 3 ~ 5 times that of ordinary glass, and the impact strength is 5 ~ 10 times that of ordinary glass, and it improves the security by increasing the strength.

The second is the use of security, increase its bearing capacity improved brittle quality, even if small shards of Tempered Glass damage has no acute Angle, dramatically reduced the harm of human body. Of Tempered Glass be able to bear or endure urgent cold urgent hot property has 2 ~ 3 times than common glass, generally bear the difference in temperature of 150 lc above changes, have apparent effect to prevent thermal cracking.

Tempered Glass is high quality heating float glass to softening point and rapid cooling in the surface of the glass, the compression stress distribution on the glass surface, while very stress at the center layer. Because of the strong equal to compressive stress, makes very stress produced by external pressure was offset by glass powerful compressive stress, thus increasing the degree of safety glass.

Safety: when the glass is damaged by external forces, the debris is like a honeycombed small passive-like granule, which can not easily cause harm to the human body.

High strength: steel glass with the same thickness is 3 ~ 5 times stronger than normal glass, and the bending strength is 3 ~ 5 times that of ordinary glass.

Thermal stability: tempered glass with good thermal stability, able to withstand the temperature difference is common glass of 3 times, can withstand 200 ℃ temperature changing. Tempered Glass is actually a kind of prestressed glass, in order to improve the strength of glass, usually using chemical or physical methods. If the nickel sulfide crystal appears in the tensile stress zone of the tempered glass, the self-detonation will occur as soon as the crystal type changes. Due to the uncertainty of the time of crystallization, the self-detonation of tempered glass at normal temperature is also completely uncertain, and the detonation treatment reduces the probability of self-implosion.

After the strict homogenizing treatment, the probability of the molten glass will be greatly reduced, and the probability of 1 piece of glass in 1 000 square meters per 10,000 square meter will be less than 1% in 1 year. Steel glass at this time can be called real safe glass.

When the nickel sulfide crystal is transformed from alpha phase state to beta phase, the volume of the crystal will change by 2-4%, and the diameter of the nickel sulfide crystals that cause the molten glass self-detonation will be about 0.2mm in diameter. Tempered Glass since the cause of the explosion, is due to the glass manufacturing process, the raw material or refractory melt out of the impurity mixed with some nickel, these impurities in glass melting process, using each other to form the nickel sulfide crystals. More than 380 ℃ high temperature nickel sulfide crystals is alpha phase, room temperature is beta phase.

In cooling air cooling speed is very fast under the influence of glass, as the Tempered Glass is cooled to room temperature, structure completely fixed, nickel sulfide crystals could convert low temperature state of the beta phase, but still exist in the alpha phase of high temperature. When the original glass is formed, it is necessary to pass a slow annealing process. The nickel sulfide crystal will not affect the strength of the glass. But when the glass is tempered the situation is very different. Because tempered glass adopts quenching process.

Of Tempered Glass explosive solution, is the homogenization of Tempered Glass: is Tempered Glass to heated to 280-300 ℃, then heat preservation 2-4 hours, to make conditional happen since the blowout of Tempered Glass in the process of blasting. The homogenization of tempered glass is also called the detonation treatment of tempered glass or the hot dipping treatment of tempered glass. If the nickel sulphide crystals appear in the stress zone of the Tempered Glass, there will be a self-detonation as soon as the crystalline transition occurs.