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The Advantages And Disadvantages Of Tempered Glass
Sep 26, 2017

  The Advantages and Disadvantages of Tempered Glass

  Tempered glass belongs to safety glass. Tempered glass is actually a kind of prestressed glass. In order to improve the strength of glass, it is usually used to produce compressive stress on the glass surface by chemical or physical method. When the glass is subjected to external force, the surface stress is first offset, which improves the carrying capacity and enhances the glass self- Wind pressure, cold and heat, impact and so on.


  The first is the strength than ordinary glass to improve several times, bending.

  The second is the use of safety, its increased carrying capacity to improve the fragile nature, even if the destruction of tempered glass was no sharp corners of the small debris, the damage to the human body greatly reduced.Thening glass quenching and astringent nature than ordinary glass There are 2 to 3 times the increase, generally can withstand more than 150LC temperature difference, to prevent the thermal cracking has a significant effect. Is a kind of new glass.

  Safety: When the glass is destroyed by external forces, debris into a similar honeycomb-like small obtuse angle particles, not easy to cause harm to the human body.

  High strength: the same thickness of the tempered glass is the impact of ordinary glass 3 to 5 times the bending strength of ordinary glass is 3 to 5 times.

  Thermal stability: tempered glass has good thermal stability, can withstand the temperature difference is 3 times the ordinary glass, can withstand 200 ℃ temperature difference.


  Flat steel, bending glass is a safety glass. Widely used in high-rise building doors and windows, glass curtain wall, indoor partition glass, lighting ceiling, sightseeing elevator channel, furniture, glass fence and so on.

  Lack of shortcomings

  Tempered glass defects:

  1, the tempered glass can no longer be cut, and processing, only in the steel before the processing of the required shape to the glass, and then steel processing.

  2, although the strength of tempered glass is stronger than ordinary glass, but the tempered glass in the temperature difference occurs when the blew (own rupture) the possibility of ordinary glass does not exist blew the possibility.

  Avoid measures: glass, the glass surface resistance to mechanical strength than ordinary glass is 3 to 5 times higher, but the tempered glass corner is relatively fragile, after suffering from external forces may be broken. In addition, if the outside temperature changes frequently, tempered glass may also blew. Relevant people to remind the public to use tempered glass products, we should pay attention not to knock the corner, it is recommended not to make the glass temperature changes drastically, so as to avoid blew.

  Scope: As the tempered glass broken, the debris will break into uniform small particles and no universal glass-shaped sharp corners, which is known as the safety glass and widely used in cars, interior decoration, and high-level open to the outside window.

  Emergency method:

  Safety hammer: An auxiliary escape in a closed room. It is generally installed in the car and other enclosed cabin easy to get the place, in the event of a car fire or car into the water and other emergency situations, you can easily remove and smash the glass window door to escape.

  Uses: mainly used for emergency crushing glass escape with a hammer hit glass handle tail blade for cutting seat belts to escape.

  Scope: mainly used for bus, passenger vehicles, trains and other vehicle configuration.

  Usage: safety hammer is mainly the use of its conical tip, because the tip of the contact area is very small, so when the hammer hit the glass, the contact point of the glass pressure (not the pressure, but the pressure per unit area) Quite large, this is somewhat similar to the principle of the pushpin, the film is easy to be punctured, and the glass at this point by a large external force and produce a slight cracking, and for the tempered glass, a little bit of cracking Means that the stress distribution within the whole piece of glass has been destroyed, which in the moment produce numerous spider web cracks, this time as long as gently with a hammer and then hit a few times to remove the glass fragments.

  In addition, the middle part of the tempered glass is the most solid, the four corners and the edge is the weakest. The best way is to use a safety hammer to hit the glass edge and four corners, especially the glass above the edge of the middle of the place, once the glass with cracks, it is easy to smash the whole piece of glass.

  Tempered glass Features: Tempered glass is a high-quality float glass heating close to the softening point, the rapid cooling of the glass surface, so that the distribution of compressive stress on the glass surface, while the tensile stress in the center layer. Because there are strong equal compression stress, So that the external pressure generated by the tensile stress by the glass of the strong compressive stress offset, thereby increasing the safety of the glass.

  1, the strength increase: After the glass of the mechanical strength, impact resistance, bending strength can reach 4-5 times the ordinary glass.

  2, increased thermal stability: tempered glass can withstand a huge temperature difference without damage, resistance to change the temperature difference is equal to the ordinary thickness of ordinary float glass 3 times.

  3, improve the safety: tempered glass by the strong damage, the rapid emergence of small obtuse angle particles, so as to maximize the safety of people. Applications: furniture, electrical and electronic industry, construction, decoration industry, baths, cars, escalators, and other special needs of the safety and the existence of temperature drifting places, and can be used as insulating glass and laminated glass of the original film.

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