Perforated aluminum sheet refers to a rectangular material with a rectangular cross section and uniform thickness obtained by pressure processing (shearing or sawing) of pure aluminum or aluminum alloy materials.
In fact, it is a metal aluminum sheet with holes, also known as punched aluminum sheet, perforated metal sheet, and perforated screen.
Perforated aluminum sheet is a new material that reduces noise and has decorative effects.
Material performance and characteristicsPerformance
① Timeless, high temperature resistance, corrosion resistance, fire resistance, moisture resistance, shock resistance, and good chemical stability. Even if it is exposed to the sun and rain, the perforated aluminum sheet remains consistent, and its practicality is not inferior to marble tiles;
② Compared with other metal materials, the surface is very smooth, without burrs or other defects;
③ The structure is light and stable. The application of lightweight aluminum sheet combined with perforation reduces the weight of the material, which is very beneficial to the structural load-bearing and light design of the rod. The process is simple and easy to install and maintain.
④ Sustainability. Some perforated aluminum sheets are 100% recyclable. The sheet is eco-friendly and can contribute to LEED certification. The perforated sheet with PVDF coating has strong resistance to oxidation and harsh external conditions;
⑤ The building physical environment is good. The perforated aluminum sheet greatly reduces the shading coefficient of the glass, filters the dazzling sunlight into diffuse light, thereby reducing the impact of solar radiation on the interior, and can help create a more favorable working environment and stable indoor temperature. The ventilation and light transmittance are very good. Even if the smallest aperture is only 0.5mm, it can meet the indoor needs. The most important thing is that it can play an anti-theft effect;
⑥ The sight is wide. When you want to look into the distance, you can move left and right, up and down to open it. It will not hinder your sight at all, and it also plays a protective role as a guardrail;
⑦ The shape is beautiful, the design is simple and vivid, and it can be perforated in different ways. Through regular perforations, patterns are formed to achieve diversified shapes. Strong three-dimensional sense and good decorative effect.
⑧ The appearance is more impactful. Perforated aluminum sheets can be used to cover parking lots, cover air devices, duct systems and pipes, and create signs. This helps to improve the visual appeal of different spaces while providing functional advantages such as weather protection and temperature control;
Perforated aluminum plate type Category
① Rich variety of perforated aluminum plates • According to alloy composition, it can be divided into: high-purity aluminum plate, pure aluminum plate, alloy aluminum plate, composite aluminum plate or brazing plate and aluminum-clad aluminum plate, etc. • According to thickness, it can be divided into: thin plate (0.15mm-2.0mm), conventional plate (2.0mm-6.0mm), medium plate (6.0mm-25.0mm), thick plate (25mm-200mm), five-rib pattern aluminum plate and ultra-thick plate (>200mm), etc. • According to the type of punching technology, it can be divided into: pattern punching net, formed punching net, heavy punching net, ultra-thin punching net, micro-hole punching net, wire-cut punching net, laser punching net, etc. Affected by factors such as processing cost, unit weight, unit flatness, etc., the thickness of perforated aluminum plate is often selected from 1.0mm to 6.0mm. • Internationally, it is customary to divide it into the following three categories: 1. Aluminum plate (aluminum sheet): aluminum material with thickness>0.2mm, 200mm<width≤500mm, and length≤16m; 2. Aluminum bar (aluminum strip): aluminum material with thickness>0.2mm and width≤200mm; (With the advancement of large equipment, there are more bars with a maximum width of 600mm); 3. Aluminum foil: aluminum material with a thickness≤0.2mm.
② Plate type classification
The plate type can be divided into flat plate, folded plate, wavy, serrated and short-side folded plate. With the increase of perforation rate, the strength of perforated aluminum plate tends to weaken. The choice of plate type affects the strength of perforated aluminum plate, and then affects the size of perforated plate module, the number of keels that play a connecting role, and the overall effect expression.
1. Flat plate perforated plate first appeared in the form of flat plate, because the processing technology of flat plate is relatively simple and it is the most widely used. • Advantages: The interface of the board is very flat, the arrangement of holes is more free, which is suitable for patterned hole arrangement design, the line of sight is more transparent, and it is conducive to the overall expression of the building.
• Disadvantages: Due to its sheet structure, its own strength is weak, especially with the increase of the plate size and porosity, it decreases faster. The strength can be increased by increasing the material thickness of the board. Therefore, in the design, it is often necessary to reduce the size of a single board, or to increase the overall strength of the skin by increasing the number of supporting keels behind it.
2. The folding plate type is formed by folding on the basis of the folding plate type. Folding is actually equivalent to greatly increasing its own structural thickness, so the strength is greatly improved, which can reduce the vertical division and seam connection of the plate, greatly reduce the number of vertical keels, and save the cost of structural components.
There are two main folding methods: concave and convex and zigzag. The depth and angle of folding can be adjusted according to the design needs. The folding surface at different angles can present different transparency changes at different viewing angles, and the light and shadow changes are also richer, creating a multi-level translucent atmosphere.
3. The wave type is formed by arc bending on the basis of the folding plate type. Its characteristics are similar to the folding plate type, but the wave type perforated plate can form a more hazy and ambiguous translucent atmosphere, and its softened interface contour is easier to integrate into the environment.
③ Punching classification
The hole size and pattern of the perforated plate can be carefully processed and designed according to needs. Holes of different sizes, densities and shapes form different translucent visual effects.
Punching mainly includes rectangular holes, square holes, diamond holes, round holes, oblong holes, hexagonal holes, cross holes, triangular holes, long waist holes, plum blossom holes, fish scale holes, pattern holes, eight-shaped nets, herringbone holes, five-pointed star holes, irregular holes, bulging holes, special-shaped holes, louver holes, etc.
