The performance characteristics, classification and use of aluminum plates and aluminum plates

aluminum plate, as the name implies, refers to a plate-shaped material made of aluminum or aluminum alloy materials. In other words, it is a plate-shaped aluminum product manufactured by heating, rolling, straightening, or solution aging heat of flat aluminum billet.



aluminum panels used in construction include single-layer aluminum panels, composite aluminum panels and other materials. Generally, single-layer aluminum panels (also called single aluminum panels or pure aluminum panels) are often used in architectural decoration projects. In recent years, single-layer aluminum panels have been used in aluminum curtain walls. The more common. Aluminum panel curtain wall is also a form of curtain wall. Simply put, aluminum panel is used to replace glass to make curtain wall. Aluminum panel curtain wall is mostly used for wall shielding and non-lighting walls. For example, the Guangzhou World Trade Center used the Southwest Aluminum Processing Plant's plate branch to process nearly 150 tons of aluminum plates with different arcs, and the surface was sprayed with electrostatic. Single-layer aluminum panels have always been used for foreign aluminum curtain walls. Single-layer aluminum plates generally use pure aluminum plates. The thickness of the aluminum plate is 3mm. In order to strengthen the surface strength of the aluminum plate, reinforcement ribs must be installed on the back of the aluminum plate (existing manufacturers are uneasy). The reinforcement ribs are made of thick aluminum tape. Weld on the back of the aluminum plate, then drill the aluminum strip as a reinforcing rib into the screw, and fix it with the screw.



   In order to reduce the weight of aluminum plates and increase the strength of aluminum plates, we use aluminum alloy plates. We often choose aluminum plates made of No. 21 anti-rust aluminum code LF21 as curtain wall aluminum plates. The thickness of the aluminum plate is reduced from the original 3mm to 2.5mm, and the strength of the alloy is about twice as high as that of the pure aluminum plate. LF21 aluminum tape is used for the reinforcement. The width and thickness of the aluminum tape are determined by the surface of the aluminum plate, generally 2-2.5mm thick and 10-25mm wide. Why do you need to install stiffeners on the back of the aluminum panel of the aluminum panel curtain wall? Under the condition of positive and negative external pressure, the aluminum panel will not sag and will not bulge out, so as to avoid the vibration sound of the aluminum panel curtain wall repeatedly vibrating inside and outside. If sound insulation is required, rock wool, slag wool or foaming treatment can be placed inside the aluminum plate. The first domestic aluminum plate manufacturer to produce aluminum curtain walls, Chongqing Southwest Aluminum Deep Processing Factory, which is a military manufacturer, can produce aluminum plates with a width of 2.8 meters. Surface treatment of curtain wall aluminum panels can be divided into two methods, one is anodizing and the other is electrostatic spraying. The anodized oxide film is generally above 12μ, and the color is only two kinds of bronze and white. The color is monotonous. The more serious disadvantage is that the color of each aluminum plate surface is different. Many curtain wall panels are combined to form an overall curtain wall effect. Very ugly. This shortcoming can be said to be impossible to eliminate. It is not caused by the production technology, but because the aluminum plate is not made of batch numbers, and there are small differences in chemical composition. In addition, factors such as the current density of the electrolytic bath during oxidation cannot be completely the same, so The color after oxidation is somewhat different. It may not be obvious from a single sheet, but it is very obvious if they are all lined up together. Therefore, the surface treatment of the aluminum plate of the aluminum plate curtain wall must not be anodized.



   Another method of surface treatment for curtain wall aluminum panels is electrostatic spraying. Spraying is divided into powder spraying and liquid spraying. Powder spraying materials are mainly: polyurethane, swelling resin, epoxy resin and other raw materials are matched with high color retention pigments, and dozens of different colors of spraying powder can be obtained. The sprayed powder is resistant to collision and abrasion. Under the impact of 50 kg, the aluminum plate is deformed, the sprayed layer has no cracks, no drop, and integrity, and it is resistant to dilute acid and mortar. The only drawback is that it is afraid of long-term exposure to ultraviolet rays, and it is easy to produce differences in the color of the yin and yang after a few years. The spray powders produced by many domestic manufacturers have great weight differences. Some powders contain gold chips after they are hung on the wall. After the powder is hung on the wall, it changes with the angle of sunlight during the day and at dusk, and the wall color is different. The use of powder spray paint hopes to attract attention. Liquid spray coating is fluorocarbon polymer spray coating, commonly known as fluorocarbon spray coating. It is a fluorocarbon polymer resin used to make paint oil and used as a metal finish. The combination with fluorine is currently the most stable molecular combination. .



  Since single-layer aluminum panels are easier to bend and process and form complex shapes than honeycomb aluminum panels, they can better adapt to the ever-changing architectural exterior wall decoration needs. It is generally considered that single-layer aluminum panels are the best aluminum curtain wall material. A variety of colors of sprayed surface can be obtained, with good strength, low cost, and long life. If the aluminum plate is hung on the wall without direct contact with steel, it will not fall off and corrode for 50 years. (The roof made of aluminum plate in Tianjin before liberation until now Still intact). The life span may be longer to match the life span of the building. The single-layer aluminum curtain wall is made of pure aluminum 3mm or LF21 2.5mm aluminum veneer as the curtain wall panel. The single-layer aluminum plate is developed due to the development of electric bolt welding technology. The electric bolt welding realizes the reinforcement welding on the back of the single-layer aluminum plate finish. Reinforcing ribs do not damage the aluminum veneer. The single-layer aluminum sheet is easy to bend and processed into complex shapes, with high strength and long service life (up to 50 years). Therefore, its appearance makes the aluminum curtain wall rich in processing and installation forms a lot of.


  Single-layer integral stamping and forming aluminum plate is made by special processing of single-layer aluminum plate. The special-shaped aluminum plate wall used for building exterior decoration can be regarded as a special case of single-layer aluminum plate.