Curtain wall aluminum profile manufacturers: treatment process and advantages of curtain wall aluminum panels

At present, the application of aluminum curtain wall in my country's construction industry can be said to be more and more common. Although the development time of aluminum curtain wall industry is not particularly long, the extremely prominent structure embodied in it has been widely promoted in construction engineering. So, what are the treatment processes and advantages of aluminum curtain wall panels: 　　 One, the treatment process of aluminum curtain wall panels 　　　　 The treatment process of curtain wall aluminum panels can be divided into two types, 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 a curtain wall as a whole The effect is 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 composed of batch numbers, and the chemical composition has small differences. In addition, the current density of the electrolytic bath during oxidation cannot be completely the same. The color after oxidation is somewhat different, and it may not be obvious from a single sheet, but it is very obvious if they are all arranged 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 layer drop, and is intact. 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 spraying powder produced by many aluminum curtain wall manufacturers in my country has a great difference in weight. Some powders contain gold chips after being hung on the wall. After the powder is hung on the wall, it changes with the angle of sunlight during the day and dusk, and the color of the wall varies. The difference, the choice of powder spray paint should be paid attention to.　　 2. Advantages of curtain wall aluminum panels: 　　 As far as the curtain wall aluminum panels currently used in our country are concerned, most of them are aluminum alloy single panels and composite aluminum panels. The curtain wall aluminum alloy veneer has unique texture, rich color and long lasting, and the appearance and shape can be diversified, and can be perfectly combined with glass curtain wall materials and stone curtain wall materials. Its perfect appearance and excellent quality make it popular with owners. Its light weight is only one-fifth of marble and one-third of glass curtain wall, which greatly reduces the load on the building structure and foundation, and the maintenance cost Low, high performance-price ratio. 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). The middle layer is 3～4mm thick polyethylene (PE or PVC) by rolling and heat bonding. The product is of a certain specification. Flat plate, such as 1220mm×2440mm. The fluorocarbon paint on the surface of the external composite aluminum plate is also completed by roller coating and rolling and heat bonding at one time. The thickness of the coating is generally about 20μm. The advantages of the composite aluminum plate are light weight, smooth surface, good flatness, and the same direction. There is no color difference and excellent on-site processability, which provides conditions for dealing with the external wall size changes caused by on-site construction errors, reducing the workshop processing cycle and shortening the installation period. The composite aluminum panels must be processed into wall panels during installation. First, the panels must be cut according to the size of the secondary design. When cutting the panels, the folding and placing dimensions must be considered. Generally, about 30mm is added on each side. According to the curtain wall According to the installation company, the yield rate of cutting boards is generally 60% to 70%. The cut composite board needs to be grooved on four sides, that is, cut the inner aluminum sheet and plastic layer of a certain width, leaving only the outer aluminum sheet with a thickness of 0.5mm, then fold the edges to a 90-degree angle, and then use aluminum profiles to make the same size The sub-frame is placed in the bent groove of the aluminum-plastic plate. The bottom surface of the sub-frame is bonded to the back of the aluminum-plastic plate with structural glue. The folded four sides are fixed to the outside of the sub-frame by riveting. There are stiffeners to ensure the mechanical strength of the wall panel. The stiffeners are made of aluminum and bonded with structural adhesive. Some informal methods only fix the four corners of the composite panel with angled aluminum. The stiffener is bonded with double-sided tape. Greatly discounted.
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