HLCALUMINUMaluminum composite panels manufacturers
Author?: HLCALUMINUM?–?Aluminum Composite Panels Manufacturers & Suppliers
The quality of wood-grain aluminum veneer plays a decisive role in the quality of the entire curtain wall. By analogy, the purchase of panels is the key. The wood grain aluminum veneer is generally made of pure aluminum. The thickness of the aluminum veneer commonly used for exterior walls is generally 2.5-3mm. In order to strengthen the surface strength of the aluminum veneer, reinforcing ribs must be installed on the back of the aluminum plate. The reinforcing ribs are made of thick aluminum strips (the reinforcing ribs of the plate are made of It is located at different heights to calculate its size), first use a flash welder to weld the screw caps on the back of the aluminum plate, then drill the aluminum strips used as reinforcements into the screws, and fix them with screws.
The back of the aluminum panel of the aluminum panel curtain wall should be equipped with reinforcing ribs. The reason is that under the condition of positive and negative external pressure, the aluminum panel will not sag or bulge out, thus avoiding the vibration sound caused by the repeated vibration of the aluminum panel curtain wall inside and outside. If sound insulation is required, rock wool, slag wool or foaming treatment can be placed inside the aluminum plate. Domestic aluminum plate manufacturers can produce various widths and lengths, various arc-shaped special-shaped curtain wall aluminum plates according to user requirements, and weld the reinforcing ribs.
The installation of reinforcing ribs is also very important. The reinforcing ribs of some manufacturers are not effectively connected to the folded edge of the aluminum plate, which destroys the force transmission effect of the reinforcing bar, causes deformation of the plate after use, and affects the effect of the facade. In order to reduce the weight of the aluminum plate and increase the strength of the aluminum plate, we often use No. 21 anti-rust aluminum (code name LF21) as the curtain wall aluminum plate. The thickness of the aluminum plate is reduced from 3mm to 2.5mm, and the strength of the alloy is about twice that of the pure aluminum plate.
Due to the relatively small aluminum content in the aluminum alloy plates used by some manufacturers, the produced plates may be rusted or folded and cracked, which seriously affects the quality. The synthetic composition of the board must meet the standards. The surface treatment of curtain wall aluminum panels can be divided into two methods, one is anodic oxidation, and the other is electrostatic spraying.
The anodized oxide film is generally above 12μ, and the color is only bronze and white. It can be said that this shortcoming cannot be eliminated. It is not caused by the production technology, but because the aluminum plates are not of the same batch number, there is a small difference in chemical composition, and factors such as the current density of the electrolytic bath solution during oxidation cannot be completely the same, so after oxidation. There is a difference in color to some extent. It may not be obvious when viewed individually, but it is very obvious when 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 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, polyexpansion resin, epoxy resin and other raw materials with high color retention pigments, and dozens of spray powders of different colors can be obtained. The spray powder is resistant to collision and abrasion. Under the impact of 50 kg, the aluminum plate will be deformed. The sprayed coating has no cracks, no layers, and is intact. It is resistant to dilute acid and mortar. The only disadvantage 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 domestic manufacturers varies greatly in weight, and some powder contains gold flakes. After hanging on the wall, the powder changes with the angle of sunlight, changes during the day and dusk, and the color of the wall varies. Attention should be paid to the selection of powder spray paint. Wood grain aluminum veneer,.