The aluminum veneer curtain wall is made of high-quality high-strength aluminum alloy plate, its common thickness is 1.5, 2.0, 2.5, 3.0mm(1/8 inch aluminum sheet), the alloy type is 1000 3000 5000 6000 series aluminum plate, 3003-H24 is especially common;
Curtain wall aluminum panels are mainly composed of panels, ribs and corners. The corner code can be directly bent and stamped from the panel, or it can be formed by riveting the corner code on the small side of the panel. The reinforcing rib is connected with the electric welding screw behind the panel (the screw is directly welded on the back of the panel) to make it a solid whole, which greatly enhances the strength and rigidity of the aluminum veneer curtain wall and ensures the flatness in long-term use. degree and wind and earthquake resistance. If sound insulation and heat insulation are required, efficient sound insulation and heat insulation materials can be installed on the inside of the aluminum plate.
Aluminum veneers are divided into two types in terms of specifications: aluminum veneers with a thickness of less than 1.2 mm are called aluminum buckle plates (also called aluminum square plates), and aluminum veneers with a thickness of more than 1.5 mm are called aluminum veneers (also called aluminum square plates) aluminum curtain wall).
As far as the currently used aluminum curtain walls are concerned, most of them are composite aluminum panels and aluminum alloy veneers.
|The composite aluminum plate is made of two layers of 0.5mm pure aluminum plate inside and outside (0.2-0.25mm for indoor use), and the middle layer is made of polyethylene (PE or polyvinyl chloride PVC) with a thickness of 3-4mm. Flat plate, such as 4×8 aluminum sheet (1220mm×2440mm). The fluorocarbon paint on the surface of the composite aluminum plate for external use is also completed by roller coating, rolling and heat sealing at one time. The thickness of the coating is generally about 20 μm. The advantages of the composite aluminum plate are light weight, smooth surface, good flatness, and the same direction It has no color difference and has excellent on-site processability, which provides conditions for dealing with the size change of the outer wall caused by the on-site construction error, reducing the processing cycle of the workshop and shortening the installation period.|
|The aluminum alloy veneer is generally 2~4mm aluminum alloy plate. When it is made into a wall panel, the sheet metal processing is carried out according to the requirements of the secondary design, and the edge is directly folded. The four corners are welded into a close groove by high pressure. The wall panel The fixing bolts for the reinforcing ribs are reserved on the back by means of electric welding nails. After the sheet metal work is completed, the fluorocarbon paint is sprayed. Generally, there are two coats and three coats, and the thickness of the paint film is 30-40μm. The aluminum alloy veneer is easy to process into arcs and multiple folded edges or sharp angles, which can meet the needs of today’s ever-changing exterior wall decoration, and it is rich in colors, which can be arbitrarily selected according to the design and the owner’s requirements, which truly broadens the scope of architects. their design space.|
Aluminum curtain wall has unique texture, rich and long-lasting color, and can be diversified in appearance and shape, and can be perfectly combined with glass curtain wall materials and stone curtain wall materials. Its perfect appearance and excellent quality make it favored by owners. Its light weight is only one-fifth of marble and one-third of glass curtain wall, which greatly reduces the load of building structure and foundation, and the maintenance cost Low, high performance-price ratio.
|Name||Aluminum curtain wall|
|Material||1100/1060 aluminum, 3003 aluminum sheet, 5005 aluminum, 6061 aluminum, 1000 series of pure aluminum, 3000 series of aluminum-manganese alloy, 5000 series of aluminum-magnesium alloy, 6 series of aluminum-magnesium-silicon alloy|
|Color||White, Black, Grey, Solid/Single Color, Imitation Wood Grain, Stone Grain, Silver Gray/Silver Flash, Gold, Champagne Gold, Rose Gold, Natural/Natural Color, Titanium Gold, High Gloss, Matte, Two-color, Three-color, Custom Pattern, Antique Copper|
|Scope of application||The production of aluminum veneer curtain wall curtain wall is suitable for the decoration of various building interior and exterior walls, lobby facades, column decorations, elevated corridors, pedestrian bridges, elevator edging, balcony edging, sign boards, indoor special-shaped ceilings, etc.|
The surface of the aluminum curtain wall is generally treated with chromium and other pre-treatments, and then treated with fluorocarbon spraying (PVDF). Polyvinylidene fluoride resin (KANAR500) for fluorocarbon paint topcoats and varnishes. Generally divided into two coatings, three coatings or four coatings.
Fluorocarbon coating has excellent corrosion resistance and weather resistance, can resist acid rain, salt spray and various air pollutants, has excellent cold and heat resistance, can resist strong ultraviolet radiation, and can maintain long-term non-fading and non-chalking ,long lasting.
Huawei Aluminum selects high-quality fluorocarbon coatings from world-renowned fluorocarbon coating manufacturers such as PPG, DNT, AKZO, and NIPPON. It has a wide range of color options. Customers can directly choose according to the color swatches provided by the manufacturer or provide swatch samples.
The anodized oxide film is generally above 12μ, and the colors are only bronze and white. The color is monotonous. The more serious disadvantage is that the color of each aluminum plate is different. Very ugly.
This shortcoming can not be eliminated, it is not caused by the production technology, but because the aluminum plate is not made of a batch number, there are small differences in chemical composition, and factors such as the current density of the electrolytic bath during oxidation cannot be exactly the same, so There are some differences in the color after oxidation, which may not be obvious when viewed individually, but it is very obvious if they are all arranged together. Therefore, the surface treatment of the aluminum plate of the aluminum curtain wall must not be anodized.
Another method of aluminum curtain wall surface treatment is electrostatic spraying. Spraying is divided into powder spraying and liquid spraying. Powder coating materials are mainly polyurethane, expansion resin, epoxy resin and other raw materials combined with high color retention pigments, and dozens of spray powders of different colors can be obtained. The sprayed powder is impact-resistant and wear-resistant. Under the impact of 50kg, the aluminum plate is deformed, and the sprayed coating has no cracks, no peeling, intact, resistant to dilute acid, and resistant to mortar.
The only disadvantage is that it is afraid of long-term exposure to ultraviolet rays, and it is easy to produce yin and yang color difference after a few years.
At present, the construction industry has become a hot spot of consumption and a point of economic growth, and the demand is gradually increasing. Driven by the Beijing Olympic Games, Shanghai World Expo, Guangzhou Asian Games, Western Development, revitalization of Northeast China, urban renovation and new city construction in various places, the total aluminum curtain wall market will continue to grow.
At present, the aluminum curtain wall industry has formed a technological innovation system with more than 100 large-scale enterprises as the main body and more than 50 backbone enterprises with an output value of over 100 million yuan. The industrial output value completed by these large-scale backbone enterprises accounts for about 50% of the total industrial output value of the whole industry. A good market image has become the main force of technological innovation, brand excellence and market development in the whole industry.
Aluminum alloy curtain walls are still dominated by exposed frames, hidden frames, and aluminum panel curtain walls. Unitized curtain walls have good development prospects in large and medium-sized cities. Aluminum double-layer, intelligent, and sunshade curtain walls will gradually mature and improve. The market share of aluminum panel curtain wall in the building curtain wall market will remain above 55%, and the product structure will undergo major changes. Affected by the national building energy-saving policy and the energy crisis, the proportion of energy-saving and environmentally friendly aluminum curtain walls will be greatly increased.
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