Basic introduction of aluminum veneer
Aluminum veneer its structure mainly by the panel, stiffeners and angle code and other components. Forming the largest workpiece size of up to 8000mm × 1800mm (L × W) paint using the United States PPG, the United States Valspar Valspar, the Netherlands Akzo Nobel AkzoNobel, South Korea KCC, and other famous brands of paint, coating is divided into two coating a baked, three coated Two baked, the coating performance to AAMA (American Association of Construction Manufacturers) and ASCA American Building Coating Association) AAMA2605-98 standards.
What are the specifications of aluminum veneer?
Conventional thickness: 1.5mm, 2.0mm, 2.5mm, 3.0mm.
Common specifications: 600 * 600mm, 600 * 1200mm
Aluminum veneer features
1, light weight, good rigidity, high strength 3.0mm thick aluminum plate per square board weight 8kg, tensile strength 100-280n / mm2
2, good durability and corrosion resistance. Using kynar-500, hylur500-based pvdf fluorocarbon paint, available 25 years without fading.
3, good technology. The first processing after the painting process, aluminum can be processed into a flat, curved and spherical and other complex geometric shapes.
4, uniform coating, color and diverse. Advanced electrostatic spraying technology makes the paint and aluminum plate adhesion between the uniform, diverse colors, large choice of space.
5, not easily tarnished, easy to clean and maintain. Fluorine coating film non-sticky, so that the surface is difficult to attach contaminants, more to the cleanliness.
6, installation and construction convenient and quick. Aluminum molding in the factory, the construction site without cutting, can be fixed on the skeleton.
7, recyclable, environmentally friendly. Aluminum can be 100% recycled, unlike glass, stone, ceramic, aluminum-plastic panels and other decorative materials, high residual salvage value.
Comparison of aluminum veneer and aluminum
Metal sheet curtain wall applications have been decades of history, are still in use, including aluminum veneer, aluminum-plastic composite panels and aluminum honeycomb panels three. Of the three materials, aluminum veneer and aluminum-plastic panels are the most commonly used. Aluminum veneer appeared first, and later in the late 1960s and early 1970s, APCP was invented in Germany, and quickly became popular around the world. Aluminum and aluminum veneer in the end what is the difference? Here I will make a simple comparison of these two materials:
1, material and cost
Aluminum veneer generally use 2-4mm AA1100 pure aluminum or AA3003 aluminum alloy plate, the domestic general use of 2.5mm thick AA3003 aluminum alloy plate; APCP generally use 3-4mm three-tier structure, including the upper and lower two 0 .5mm sandwich PVC or PE. We can see from the material, the cost of APCP must be much lower than the aluminum veneer. The current market is about 4mm thick composite board 2.5mm thick aluminum veneer prices lower than 120 yuan / square, a 10,000 square project, the use of aluminum-plastic panels will be reduced by 1.2 million than the use of aluminum veneer The cost of the yuan.
2, the process
At present, there are two kinds of fluorocarbon spraying aluminum veneer and roller coating on the aluminum veneer in the world. There is also stick coating production line in China, so the processing of veneer here mainly refers to the production of fluorocarbon spraying. Spraying aluminum veneer production is divided into two steps: The first step is sheet metal processing. This process is mainly through the plate after cutting, folding, bending, welding, grinding and other processes, the aluminum veneer processed into the required shape and size of construction. The second step is to spray. Spraying is in the processing of the sheet metal spray paint. Spraying is divided into two kinds, one is artificial spraying, one is spraying machine. Machine coating generally only suitable for the rules of the flat, but this aluminum veneer used in the actual use of less, most of the domestic manufacturers using artificial spraying. Artificial spraying is a dangerous job, because the paint is volatile and toxic are relatively strong, it is likely to cause chronic benzene poisoning, seriously affecting human health. One of the great advantages of artificial spraying is that regardless of the amount of size, color can be optional, and the aluminum-plastic coated roller must reach a certain amount before it can be processed. The processing of aluminum plate is more complicated than the aluminum veneer, there are four major processes of chemical formation, painting, compounding and trimming. These four processes are all automated production besides trimming. As can be seen from its processing, aluminum-plastic panels in the environmental and safety aspects have a certain superiority. Coupled with the simple process of sheet metal plus aluminum veneer, some private workshops have begun to set foot in, seriously affecting the quality of aluminum veneer market stability.
3, the appearance of the product quality and physical properties
Project 2.5mm aluminum veneer 4mm thick aluminum-plastic composite panel appearance quality flatness is not flat, it looks partial bump, flatness is relatively high, but the processing of limited shape; but can be processed into a variety of irregular shapes; Spray roller coating eye quality quality, color and film thickness deviation due to the instability of artificial technology, there is no obvious local color difference, but the damage can not be repaired. And film thickness deviation; local damage can be repaired. Machine Tensile strength 130 / mm 38-61N / mm2X Mechanical elongation 5% -10% 12% -17% Bending strength 84.2N / mm 34N / mm2 Elastic modulus 70.00N / mm2 26.136-49.050N / mm2 As can be seen from the table, the appearance of aluminum veneer worse than aluminum, but its mechanical properties were significantly better than the aluminum-plastic panels, its wind pressure performance is superior to the aluminum-plastic panels. However, most of our country, the wind pressure value of aluminum plate is completely affordable, so the use of aluminum veneer project a bit overkill.
4, the construction process
Aluminum and aluminum veneer construction process is generally the same. The biggest is not aluminum-plastic plate is processed into the desired shape and size at the site, with greater freedom of construction. The aluminum veneer processing is formed in the factory, due to the accuracy of domestic equipment, often in the construction process will encounter some minor problems. In addition, the delivery of the construction process assurance, the mass production of aluminum-plastic composite board production much faster than the aluminum veneer, the progress schedule to ensure that the system is also higher.
