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Tempered glass is a deep-processed glass product. It is made by cutting, edging, washing and drying the flat glass according to the product requirements, then heating it to near the glass softening temperature and immediately cooling it sharply.
The tempered glass for construction is one of the safety glass products certified by the National Certification and Accreditation Administration of China. Consumers should pay attention to the following points when purchasing tempered glass for construction:
Look at the quality of the lookup
View the quality of the product's appearance. Tempered glass should not have cracks or corners; edge and scratches should not exceed the requirements of GB15763.2-2005. At the same time, the quality of the original glass used in the production of tempered glass should meet the requirements of the corresponding product standards. The defects in the appearance quality of the tempered glass caused by the inherent defects of the original glass should meet the requirements of the corresponding product standards.
In addition, look at the flatness of the flat tempered glass. For flat tempered glass products, GB15763.2-2005 standard requires that the bow bending should not exceed 0.3%, and the wave bending should not exceed 0.2%.
Look at the mark check certificate
Since the safety glass product certification was carried out in 2003, most of the building tempered glass manufacturers in the country have passed the product certification. The company must screen or paste the 3C mark on the product body for sale, or on its smaller outer packaging and accompany it. The 3C mark is added to the document (such as the certificate of conformity). When purchasing a product, first check whether there is a 3C mark, and check whether the manufacturer of the product has passed the compulsory product certification (with 3C certificate and valid) according to the company information, factory number or product certification certificate, etc. Whether the specification is within the scope of the company's ability to pass compulsory certification, and whether the status of the certificate is valid.
Check the inspection report of the product
As a product that affects the safety of people and property, tempered glass for construction has always been listed as the focus of government supervision and inspection, and regular manufacturers are subject to inspection by the supervision department on a periodic basis. Therefore, the production enterprise should be able to provide the inspection report issued by the quality inspection department. Otherwise, the quality of the product will lack a basis.
Second, the maintenance and maintenance skills of tempered glass 1, pay attention to protect the corners of tempered glass
If there is damage at the corners of the tempered glass, the risk of self-explosion of the glass increases exponentially. Since the stress points of the tempered glass are all concentrated at the corners, the protection of the corners is particularly important, and care must be taken when the tempered glass with broken corners cannot be handled.
2. Avoid letting the tempered glass be under pressure for a long time.
For the sake of indoor beauty, many families will choose to use tempered glass as the table and coffee table for the tabletop. Generally, the tempered glass is subjected to pressure between 70mpa and 100mpa. This pressure is multiplied by the pressure area of ​​the glass. Converted into item quality = (pressure * area) / 10, if not necessary, do not put heavy objects on the tempered glass table for a long time, to avoid the pressure value reaching the critical point and causing the tempered glass to break.
3, to avoid uneven heat and cold
If, under extreme conditions, high temperature and low temperature are applied to both ends of a piece of glass, then 90% of the glass will self-explosion. For example, when the incandescent lamp is lit with cold water, the glass of the incandescent lamp will rupture. Although this situation will be small for tempered glass, it is not afraid of 10,000.
4, away from acid and alkali substances
Avoid contacting the tempered glass with alkaline substances such as sodium hydroxide (NaOH or caustic) and hydrofluoric acid (HF). The glass is essentially silica (SiO2), which chemically reacts with the above substances.
5. It is forbidden to use sharp and hard objects to strike the corners of the glass.
Since the stress point of the tempered glass is concentrated at the corners, once the corners are broken, the probability of rupture of the tempered glass will increase, so for the safety of the home, do not use sharp, hard objects to strike the corners of the tempered glass.
Third, the cleaning of tempered glass 1, daily use of wet towels, newspapers
In daily cleaning, wipe with a wet towel or newspaper. The wet towel can erase most of the stains, and the newspaper can erase the water trace on the glass surface. Stubborn stains can be wiped off with a towel, beer or warm vinegar. It can also be used as a glass cleaner. Avoid using a solution with a strong acidity and alkalinity. The surface of the glass in winter is easy to frost, and it can be wiped with cloth dampened with salt water or white wine, which works well.
2, plastic wrap to revitalize the glass
Stained glass is very laborious to clean, just need a plastic wrap and a wet rag to rejuvenate the glass. Spray the cleaning agent on the glass, stick a plastic wrap, and soften the solidified oil stains. After ten minutes, tear off the plastic wrap, then wipe it with a damp cloth to wipe off all the oil stains, leaving no traces, smooth as new .
If there is oily handwriting on the glass, rub it with rubber soaked water, then wipe it off with a damp cloth to completely remove the traces of the oily pen; if it is paint, use cotton and hot vinegar to scrub; wipe the glass with a clean dry cloth and alcohol to make it bright. crystal.
3, fluoride-free toothpaste cleaning frosted glass
Frosted glass and frosted glass with various patterns are also popular among people, but it is also a troublesome thing to clean. If you want to clean the patterned frosted glass, you can use a toothbrush, a cleaning agent, or a fluoride-free toothpaste to scrub the stain and completely remove the stain. Fluoride-containing toothpaste cannot be used because fluorine destroys tempered glass.
4, keep clean to prevent mold
Tempered glass table tops should always be kept clean to prevent mold spots from desktop contamination. If mildew is present, move the table to a ventilated place and use an electric iron for 2-3 minutes in areas with mildew spots until the mold spots disappear.
5, timely wipe the tea
When the tea falls on the table, it should be dried in time, otherwise it will leave a very ugly tea stain for a long time. To remove these tea stains, sprinkle some water on the table and wipe it with the foil paper in the cigarette box. After scrubbing with water, you can wash off the tea traces. ,
6, hard cloth and wax to remove burn marks
Sometimes accidentally dropping the cigarette onto the table, the glass surface will leave unsightly burning marks. You can put a hard cloth on the toothpick, gently wipe the burning marks, and then apply a layer of wax to remove the burning. mark.
to sum up:
The toughness of tempered glass is better than ordinary glass, but there is a danger of bursting and breaking if it is used improperly or lacks maintenance.