[China Glass Net] The selection criteria for tempered glass in decoration is very important. Tempered glass is a general term for reinforced glass products with good mechanical properties and heat-resistant vibration properties. Tempered glass is divided into flat tempered glass and curved tempered glass for glass doors and windows, partition walls and glass curtain walls of buildings, as well as doors and windows for automobiles and ships. Next, we will introduce the selection criteria of tempered glass and the characteristics of tempered glass.
Selection criteria for tempered glass
1. The degree of curvature of the flat flat tempered glass shall not exceed 0.5% when the bow is formed, and shall not exceed 0.3% when the waveform is used.
2. Impact resistance Six tempered glass samples were tested. The number of damaged samples was not more than one, and more than or equal to three were unqualified. When the number of damage is 2, another 6 pieces are taken for testing, and all 6 pieces must not be destroyed as qualified.
3. The state of the debris is tested by taking four tempered glass samples. The number of fragments in each 50 mm × 50 mm area must exceed 40, and a small number of long strips are allowed. The length is not more than 75 mm. Not a knife shape, the long strips extending to the edge of the glass form an angle of not more than 45° with the edge
4. Impact performance of the tamper bag (1) When the glass is broken, the sum of the masses of the larger 10 pieces of each sample shall not exceed the mass corresponding to the area of ​​65 m2 of the sample.
(2) When the drop height of the shotgun bag is 1200mm, the sample is not damaged.
5. The bending measurement is based on a flat tempered glass product. The sample is placed vertically, and the ruler is placed horizontally against the surface of the sample for measurement. The arc is expressed as a percentage of the ratio of the height of the arc to the length of the string. In the case of a waveform, the percentage of the height of the valley to the peak is expressed as a percentage of the ratio of the peak to the peak or the valley to the valley.
Characteristics of tempered glass
1. Safety When the glass is damaged by external force, the debris will become a honeycomb-like obtuse-angled small particle, which is not easy to cause serious damage to the human body.
2. The impact strength of tempered glass with high strength and equivalent 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 the temperature difference is three times that of ordinary glass, can withstand the temperature difference of 300 °C.
Selection criteria for laminated glass
1. Under normal circumstances, the performance of thicker laminated glass will be better than that of thinner ones;
2, two laminated glass of the same thickness, the number of layers is better than the number of layers;
3. The impact resistance of the laminated glass will increase in quantity.
4. The laminated glass made of heat-reinforced glass has better impact resistance than ordinary annealed glass and tempered glass; the later consideration is the weight and area of ​​the glass plate.
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