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Performance and use of aluminum sheet and aluminum coil

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Aluminum sheet refers to a sheet type material made of aluminum or aluminum alloy. Or a sheet-shaped aluminum product produced by heating, rolling, straightening or solid solution aging heat of a flat aluminum embryo.
aluminum sheet
The aluminum sheets used in the construction include single-layer aluminum sheets, composite aluminum sheets and other materials. Generally, they are usually referred to as single-layer aluminum sheets (also called single aluminum sheets or pure aluminum sheets), which are mostly used in architectural decoration projects. In recent years, single-layer aluminum sheets are used in aluminum sheet curtain walls. More common. The aluminum curtain wall is also a form of curtain wall. Simply speaking, the aluminum panel is used instead of the glass to make the curtain wall. The aluminum curtain wall is mostly used for wall covering and non-lighting walls. For example, the Guangzhou World Trade Center used the southwest aluminum processing plant sheet factory to process nearly 150 tons of aluminum sheets with different curvatures, and the surface was electrostatically sprayed.
Foreign aluminum panel curtain walls have always used single-layer aluminum panels. Single-layer aluminum sheets are generally made of pure aluminum sheets. The thickness of the aluminum sheet is 3mm. In order to strengthen the strength of the aluminum sheet, the ribs must be installed on the back of the aluminum sheet (the existing manufacturer is uneasy). The ribs are made of thick aluminum strips. First, use a flash welder to put a screw cap. Solder on the back of the aluminum sheet and then insert the aluminum strip as a rib into the screw and fix it with screws. In order to reduce the weight of aluminum sheets and increase the strength of aluminum sheets, we use aluminum alloy sheets, which are often made of aluminum sheet pressed by No. 21 rust-proof aluminum code LF21. The thickness of the aluminum sheet 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 sheet. The ribs are made of LF21 aluminum strip. The width of the strip is determined according to the surface of the aluminum sheet. It is generally 2-2.5mm thick and 10-25mm wide. Why should the back of the aluminum sheet of the aluminum sheet curtain wall be reinforced? When the external positive and negative pressure is applied, the aluminum sheet will not be sunken, and the second will not bulge, thus avoiding the vibration sound of the aluminum sheet curtain wall repeatedly vibrating inside and outside. If sound insulation is required, rock wool, slag wool or foaming treatment can be placed on the inside of the aluminum sheet. The first aluminum sheet manufacturer in China to produce aluminum curtain wall, Chongqing Southwest Aluminum Deep Processing Factory, which is a military manufacturer, can produce aluminum sheets with a width of 2.8 meters.
The surface treatment of the curtain wall aluminum sheet can be divided into two methods, one is anodizing and the other is electrostatic spraying. The anodized oxide film is generally above 12μ, the color is only bronze and white, the color is monotonous, and the more serious disadvantage is that the color of each aluminum sheet surface is different, and many pieces of curtain wall panels are combined to form a curtain wall overall effect. Very ugly. This shortcoming can be said to be impossible to eliminate, not caused by production technology, but because the aluminum sheet is not made up of a batch number, chemical composition, there are small differences, plus the current density of the electrolytic cell during oxidation can not be exactly the same, so The color after oxidation is somewhat different, and the single sheet may not be obvious. If they are all arranged together, it is very obvious. Therefore, the surface treatment of the aluminum sheet of the aluminum curtain wall must not be anodized.
Another method of surface treatment of curtain wall aluminum panels is electrostatic spraying. Spraying is divided into powder spraying and liquid spraying. The powder spraying materials are mainly composed of polyurethane, bulging resin, epoxy resin and other raw materials with high color retention pigments, and dozens of different colors of spray powder can be obtained. The sprayed powder is resistant to collision and abrasion. Under the impact of 50 kg, the aluminum sheet is deformed, the sprayed layer has no cracks, no falling layer is intact, and it is resistant to dilute acid and mortar. The only shortcoming is the long-term exposure to ultraviolet light, which is prone to the difference in color between the yin and the yang. The spray powder produced by many domestic manufacturers has a very different weight. Some powders contain gold dust. After the powder is hung on the wall, it changes with the angle of sunlight. There are changes during the day and dusk, and the color depth of the wall varies. Use powder spray paint to attract attention.

Mingtai aluminum sheet manufacturer can manufacture and supply high quality 1000 series-8000 series aluminum sheet/plate/coil/foil with 18 years experience.