[China Glass Net] Due to the complexity of the employees in the building materials market, there are many kinds of empty glass doors and windows in the market. Although the appearance is white plastic steel frame, middle trim strip and glass, the price is divided into three or six, etc., from more than 200 yuan. From / square meters to more than 1,000 yuan / square meter, it is dazzling. Xiaobian specially asked the industry to identify the five techniques of distinguishing the advantages and disadvantages of hollow glass doors and windows.
According to experts, regular glass doors and windows must be sealed with two sealing strips, vacuumed in the middle, and filled with inert gas. Such a structure makes the true insulating glass door and window have good sound insulation performance. In the past, many cheap and inferior ''hollow'' glass doors and windows simply glued the two pieces of glass together and did not undergo the above treatment, so there is no sound insulation effect unique to the insulating glass.
Consumers can distinguish between fake ''hollow'' and true hollow from the following three aspects: First, whether the glass is sealed. Many of the fake glass doors and windows are bonded with black PVC foam strips and have no sealing effect. The true insulating glass doors and windows are bonded to the glass with a special sealing strip to ensure sealing. Secondly, there is an aluminum spacer between the two pieces of glass. There are many venting holes on the aluminum spacer. The desiccant is placed inside, which can absorb the moisture in the gas and prevent the glass door and window from being heated. 'The phenomenon, while the fake ''hollow'' glass does not have these devices. Later, the sound insulation effect of doors and windows was tested in the field. The sound insulation effect of the true hollow glass doors and windows is very good, and the sound insulation effect of the fake ''hollow'' doors and windows is very general.
Distinguishing the quality of profiles The high-quality hollow glass doors and windows use high-quality profiles, such as the well-known conch profiles and green profiles in China, while the inferior hollow glass doors and windows use low-grade profiles, and some even the secondary recycling profiles that move hands and feet ( The appearance of the film with a well-known profile, shoddy). The high-quality profiles look smooth, fine, smooth and uniform in color; there are no cracks or bubbles; there is no breakage and welding at the weld; the hardness is sufficient, and the surface of the profile is not broken with the hammer. Inferior profiles are not uniform in color, and there are bubbles and impurities. When they are hit with a hammer, they will rupture, and even if they are pinched by hand, they will be deformed.
In addition, there are also differences in the quality of the inch steel installed in the profile. Good inch steel thickness is more than 1.2 mm, and the inch steel used in inferior profiles is often not thick enough, and even black hearts merchants set wood in the profile to deceive consumers, these should be noted.
In addition, the profile has a multi-cavity and a single cavity. The multi-cavity profile consists of a main cavity (mounted steel) and a number of small cavities. The insulation and drainage performance is good, and the single-cavity profile does not have the consideration of insulation and drainage.
The difference in glass quality is relatively small, and the glass without impurities and the flat surface is a qualified product. The consumer can observe the glass from the side, the glass is flat, there is no color difference, the article is seen through the glass, and the article is not deformed, which is a qualified product.
The identification of hardware accessories to see the quality of hardware accessories, also helps to determine the quality of hollow glass doors and windows. For example, metal materials such as hinges and door locks should be treated with anti-corrosion treatment, such as galvanizing, chrome plating, spraying, or stainless steel. For hinges, etc., it is necessary to adopt a design that can prevent deformation of doors and windows; door locks, try to use a multi-lock lock with good anti-theft effect.
The quality of the auxiliary material is also very important for the quality of the insulating glass door and window accessories. The auxiliary materials are mainly sealing tops and sealing strips. The hair on the high-quality sealing tops should be long and tidy, compact and elastic. It can be effectively waterproof and dustproof. There is a bottom plate between the two tops to extend the service life of the tops. Sealing strips are also very important. The surface of high-quality strips should be smooth, the edges should be neat and elastic, and the hand should be kept by hand. Insulating glass doors and windows are sealed with high-quality rubber strips to ensure a good sealing condition for a long time. Otherwise, after three or five years, the air enters the hollow glass doors and windows, and the heat insulation and sound insulation performance of the doors and windows will be affected.
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