[China Aluminum Industry Network] Aluminium doors and windows with broken bridges are designed to have a structural drainage system based on the principles of pressure balance. The design slides down the slope and is designed to provide drainage outlets, smooth drainage, and good water tightness. At the same time, the hollow aluminum door and window frame of the broken bridge adopts hollow design, strong resistance to wind pressure deformation, and good anti-vibration effect. It can be used in high-rise buildings and residential houses. It can design large-area windows and have a large lighting area. This type of window is more airtight than any aluminum or plastic window. It can ensure that there are no dust in the indoor sill and floor in areas with large sandstorms.
In addition to outstanding wind pressure resistance and waterproof characteristics, broken aluminum doors and windows also have a strong seal, sound insulation effect and so on. Aluminum alloy doors and windows are widely used in buildings today. Although aluminum alloy windows have avoided some of the shortcomings of steel windows, the profiles themselves are made of metal materials, and they have fast cooling and heat conduction and cannot fundamentally solve the problems of sealing and heat preservation. At present, many doors and windows companies have developed broken bridge heat insulation building aluminum profiles, that is, in the middle of the aluminum profile with a hard plastic break, block the aluminum alloy heat conduction, so that it achieves the same heat insulation effect with the plastic steel window, solved the aluminum profile High thermal coefficient problem.
Aluminum alloy doors and windows have occupied half of the door and window industry, but many consumers are worried about buying substandard products when they buy aluminum alloy doors and windows, because unqualified aluminum alloy doors and windows will be affected by sunlight, air, rain, etc. , Lead to aluminum deformation, and even cause the glass to crack, fall off and so on. In order to help consumers buy qualified products at the time of purchase, the experts listed three inferior aluminum alloy standards for reference by consumers:
First, the thickness of thin oxide film The national standard specifies that the thickness of the aluminum oxide film for construction should not be less than 10um (micron). The thickness is not enough. The surface of aluminum profiles is rusted and corroded. Sampling inspection of some no name, site, production license, certification of aluminum profiles, the oxide film thickness is only 2 to 4um, and some even without oxide film. According to experts' estimates, for every 1um oxide film thickness reduction, one ton of profiles can reduce electricity consumption costs by more than 100 yuan.
Second, unqualified chemical components that incorporate a large amount of aluminum and aluminum scrap can greatly reduce the cost, but it will lead to the unqualified chemical composition of aluminum profiles, and seriously endanger the safety of construction projects.
Third, to reduce the profile thickness 90 series sliding window type, according to national standards, aluminum wall thickness is not less than 1.4mm, but the market thickness of many products on the market is only 0.6 to 0.7mm. 46 series of Spring-type door, the national standard used aluminum wall thickness, lower not less than 1.62mm, and some products only 0.97 to 1.18mm wall thickness.
The inferior aluminum profiles greatly reduce the sealing time, reduce the loss of chemical reagents, and reduce the cost, but the corrosion resistance of profiles is also greatly reduced.
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