Tempered glass (also known as tempered glass) is a general term for glass products that have been reinforced, have good mechanical properties, and are heat-resistant. Tempered glass is divided into tempered glass and bent tempered glass, used for glass doors and windows in buildings, partition walls and glass curtain walls, and doors and windows for automobiles and ships. Next Xiaobian introduced tempering glass selection criteria and characteristics of tempered glass.
Tempered glass selection criteria
1, bending degree
The curvature of flat tempered glass should not exceed 0.5% when bowed, and should not exceed 0.3% when it is shaped.
2, impact resistance
Take 6 tempered glass samples for testing. The number of sample destruction is not more than 1 block is acceptable, more than or equal to 3 blocks is unqualified. When the number of damages is 2 blocks, another 6 blocks are tested, and all 6 blocks must not be destroyed.
3, the debris status
Take 4 tempered glass samples for testing. The number of fragments in each 50mm x 50mm area must exceed 40, and a small number of long-sized fragments are allowed. The length is not more than 75mm, and the ends are not knife-shaped. The angle between the long strips of debris extending to the edges of the glass and the edges is not greater than 45°
4, the impact properties of the shell bag
Take 4 flat tempered glass specimens for testing, must meet the following (1) or (2) of any of the provisions.
(1) When the glass is broken, the sum of the mass of the maximum 10 pieces per sample must not exceed the mass equivalent to the area of ​​the sample 65 m2. (2) When the drop height of the bag is 1200mm, the sample does not break.
5, bending measurement
Take a flat tempered glass product as a sample. The sample is placed upright in a vertical position, and a horizontal ruler is placed horizontally on the surface of the sample for measurement. Arch is expressed as a percentage of the ratio of the height of the arc to the length of the string. The waveform is expressed as a percentage of the ratio of the height from the trough to the peak to the distance from the peak to the peak or trough to the trough.
Tempered glass features
1, security
When the glass is destroyed by an external force, the debris will form a honeycomb-like, small, obtuse-angled particle that will not easily harm the human body.
2, high strength
The impact strength of tempered glass of the same thickness is 3 to 5 times that of ordinary glass, and the bending strength is 3 to 5 times that of ordinary glass.
3, thermal stability
Tempered glass has good thermal stability, can withstand 3 times the temperature difference is ordinary glass, can withstand 200 °C temperature changes.
Editor's summary: The selection criteria for tempered glass and the characteristics of tempered glass are introduced here. I hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.
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