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Advantages and disadvantages of tempered glass

2020-06-02

Advantages and disadvantages of tempered glass
Toughened glass belong to safety 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 characteristics of
The first it is intensity rises than common glass multiple, bending. The second is the use of security, increase its bearing capacity improved brittle quality, even if small shards of toughened glass damage has no acute Angle, dramatically reduced the harm of human body. Of toughened 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 the thermal crack. Is one of the new glass.
Safety when the glass is damaged by external forces, the debris into a honeycomb like small blunt Angle particles, not easy to cause harm to the human body.
The impact strength of tempered glass with high strength and the same thickness is 3~5 times that of ordinary glass, and the bending strength is 3~5 times that of ordinary glass.
Thermal stability tempered glass has good thermal stability, can withstand the temperature difference is three times that of ordinary glass, can withstand the temperature difference of 200℃.
Application: flat toughened and curved toughened glass belongs to safety glass. It is widely used in doors and Windows of high-rise buildings, glass curtain wall, indoor partition glass, lighting ceiling, sightseeing elevator passage, furniture, glass guardrail, etc.

Disadvantages of tempered glass:
1. The tempered glass cannot be cut or processed any more. The glass can only be processed to the desired shape before the tempered glass is processed and then tempered.
2 although the strength of tempered glass is stronger than that of ordinary glass, the tempered glass has the possibility of self-explosion (self-fracture) when the temperature difference is large, while the ordinary glass does not have the possibility of self-explosion.
Avoid measures
The mechanical strength of toughened glass, the glass surface is 3 ~ 5 times higher than common glass, but relatively weak toughened glass corner, under external force may occur after breaking up. In addition, if the ambient temperature changes frequently, toughened glass can also occur explosive. Relevant personage warns a citizen in the use of toughened glass, be careful not to knock against edge horn, suggested that try not to make glass rapid changes in temperature, lest produce explosive.
Scope of application
Because tempered glass breaks into uniform particles without the usual knife-like sharp edges, it is called safety glass and is widely used in cars, interior decoration, and Windows that open from high floors.
Emergency method
Safety hammer: a kind of auxiliary escape tool in the closed cabin. It is generally installed in the easily accessible place in the closed cabin such as a car. In case of an emergency such as a fire inside the car or a car falling into the water, it can be easily taken out and broken through the glass window to escape smoothly.
Application: it is mainly used to break glass in emergency and break the safety belt.
Scope: mainly used for bus, passenger vehicle, train and other vehicle configuration.
Mainly using the method of use: safety hammer the tip of the cone, because of the point contact area is very small, so when use hammer to hit the glass, the contact pressure of glass (not pressure, but pressure per unit area) is quite big, this is a little similar with the principle of the pins, membrane easily punctured, and made the car glass at this point is a lot of outside forces and produce a slight craze, for toughened glass, a little bit of cracking means that the stress distribution within the whole piece of glass, all the damage to the spider mesh cracks and in an instant when lightly with a hammer to hit a few times can rid the shards of glass.
In addition, the middle part of the tempered glass is the strongest and the four corners and edges are the weakest. The best way is to hit the edge and four corners of the glass with a safety hammer, especially the most middle part of the upper edge of the glass, once the glass has a crack, it is easy to break the whole glass.

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