Metal coat of door, window and curtain wall - complete collection of perforated aluminum plate

Views:487 Author:Site Editor Publish Time:2022-06-30 14:00:55 Orgin:Site

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Perforated aluminum plate refers to a rectangular material with rectangular cross section and uniform thickness, which is made of pure aluminum or aluminum alloy through pressure processing (shearing or sawing).

In fact, it is a perforated metal aluminum plate, also known as perforated aluminum plate, perforated metal plate and perforated screen.

Perforated aluminum plate is a kind of new material which can reduce noise and have decorative function.

01· Material properties and characteristics

ONE 

It is durable, resistant to high temperature, corrosion, fire, moisture, shock and chemical stability. Even if it is exposed to the sun and rain, the perforated aluminum plate is still consistent, and its practicability is not inferior to that of marble brick;

TWO

Compared with other metal materials, the surface is smooth without burrs or other defects;

THREE

The structure is light and stable. The application of light aluminum plate combined with perforation reduces the self weight of the material, which is very beneficial to the lightness of structural load-bearing and member design. Simple process, convenient installation and maintenance.

FOUR

Sustainability, some perforated aluminum panels are 100% recyclable. Plates are eco-friendly and can contribute to LEED certification. The perforated plate with PVDF coating has strong resistance to oxidation and harsh external conditions;

FIVE 

The physical environment of the building is good. The perforated aluminum plate greatly reduces the shading coefficient of the glass and filters the dazzling sunlight into diffuse light, thus reducing the impact of solar radiation on the indoor environment and helping to create a more favorable working environment and stable indoor temperature. The ventilation and light transmission are very good. Even if the minimum aperture is only 0.5mm, it can meet the indoor demand. The most important thing is to have the anti-theft effect;

SIX 

The line of sight is wide. When you want to look into the distance, you can move left and right up and down to open it, which will not hinder your line of sight at all. It also plays a protective role of a guardrail;

SEVEN

It has beautiful appearance, simple and vivid design, and can be perforated in different ways. Patterns can be formed through regular perforation to realize diversified modeling. Strong three-dimensional sense and good decorative effect;

EIGHT

With a more striking appearance, perforated aluminum plates can be used to cover parking lots, cover air installations, piping 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.

02·Perforated aluminum plate type

ONE 

Various types of perforated aluminum plates

· According to the alloy composition, it can be divided into high-purity aluminum plate, pure aluminum plate, alloy aluminum plate, composite aluminum plate or welding plate and aluminum clad aluminum plate.

· According to the thickness, it is divided into: reporting plate (0.15mm-2.0mm), conventional plate (2.0mm-6.0mm), medium plate (6.0mm-25.0mm), thick plate (25mm-200mm), five ribbed aluminum plate and ultra thick plate (> 200mm), etc.

· According to the type of punching technology, it can be divided into: pattern punching net, forming punching net, heavy punching net, ultra thin punching net, microporous punching net, wire cutting punching net, laser punching net, etc.

Affected by processing cost, unit weight, unit flatness and other factors, perforated aluminum plate thickness is usually 1.0mm-6.0mm.

· International customs are divided into the following three categories:

1、Aluminum plate (aluminum sheet): aluminum material with thickness ＞ 0.2mm, 200mm ＜ width ＜ 500mm and length ≤ 16m;

2、Aluminum strip (aluminum strip): aluminum materials with thickness ＞ 0.2mm and width ≤ 200mm (with the progress of equipment, there are more strips with a maximum width of 600mm);

3、Aluminum foil: aluminum material with thickness ≤ 0.2mm.

TWO Plate type classification

The plate shape can be divided into flat plate shape, folded plate shape, wavy shape, sawtooth shape and short edge folded plate shape. With the increase of perforation rate, the strength of perforated aluminum plate decreases. The selection of plate type affects the strength of perforated aluminum plate, and then affects the size of perforated plate module, the number of keels for connection, the overall effect expression, etc.

1、Plate shape

Perforated plate first appeared in the form of flat plate, because the processing technology of flat plate is relatively simple and widely used.

· Advantages: the plate interface is very flat, the arrangement of holes is more free, which is suitable for the patterned hole arrangement design, and the line of sight is more transparent, which is conducive to the expression of architectural integrity.

· Disadvantages: due to its flaky structure, its strength is weak, especially it decreases rapidly with the increase of plate size and porosity. The strength can be increased by increasing the material thickness of the plate. Therefore, in the design, it is often necessary to reduce the size of a single plate, or increase the number of supporting keels at the back to improve the overall strength of the skin.

2、Folded plate type

It is formed by folding on the basis of folded 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 joint connection of plates, greatly reduce the number of vertical keels, and save the cost of structural components.

There are mainly two folding methods: concave convex and zigzag. The depth and angle of folding can be adjusted according to the design needs. Folding surfaces with different angles can show different transparency changes under different vision, and the light and shadow changes are more abundant, creating a multi-level translucent atmosphere.

3、Wavy type

Based on the folded plate type, it is processed by arc bending. Its characteristics are similar to the folded plate type, but the corrugated perforated plate can form a more hazy and ambiguous translucent atmosphere, and its soft interface contour is easier to integrate into the environment.

THREE Punch classification

The hole size and pattern of the perforated plate can be carefully processed and designed according to the needs. Holes of different sizes, densities and shapes form different translucent line of sight effects.

Punching mainly includes: rectangular hole, square hole, rhombic hole, round hole, oblong hole, hexagonal hole, cross hole, triangular hole, long waist hole, plum hole, fish scale hole, pattern hole, splayed net, herringbone hole, five pointed star hole, irregular hole, bulging hole, special-shaped hole, louver hole, etc.

For example, the perforated aluminum plate of Changshu Longhu Xishang Garden Sales Office has been carefully designed, and the cross star hole is adopted. The overall gradient effect and the floodlight design still shine at night.

03.Construction process and installation nodes

ONE Perforation method

Common perforation methods: numerical control punching, stamping process, laser perforation.

The most common punching method is the use of CNC and combined punches for mass and repeated patterns. A water jet or laser is ideal for creating custom perforations and patterns, with multiple sizes of holes and unique shapes.

Customized perforation patterns and shapes are produced using millimeter precision machines and other new manufacturing technologies, and an infinite variety of folding and perforation panel designs can be achieved.

TWO Perforation rate and hole diameter

· Perforation rate refers to the percentage of the total area of perforation holes in the whole area within the perforation area.

The perforation rate is the core factor that affects the perforated aluminum panel unit of the building skin, and is the key to affect the expression of its visual integrity and reduce the building energy consumption.

According to the current mechanical equipment, the maximum perforation rate can reach about 60%, and the perforation plate size is required to be within the range of 1500*3000. If it exceeds this range, the perforation needs secondary positioning.

The higher the perforation rate of perforated aluminum sheet, the greater the impact on the flatness of formed aluminum sheet. The inspection standard should be lower than the corresponding provisions of normal aluminum sheet.

· Hole diameter is one of the influencing factors of perforated aluminum plate unit. Controlling the hole diameter, hole spacing and arrangement can affect the visual clarity of perforated staggered plate skin and create novel visual effects. Combined with factors such as perforation rate and plate thickness, it can reduce solar radiation and energy consumption.

The most common is the hole diameter of 6mm and the spacing of 15mm.

THREE Structural connection of three perforated aluminum plates

· Connection with main structure

Because the metal perforated plate is sheet-like and generally thin, its structural strength is weak. Therefore, when it is used as the building skin, its strength is not enough to support its direct span connection between the connectors of the main structure of the building. It is usually necessary to set the keel as a supporting member to fix the metal perforated plate. The keel is connected with the main structure, Thus, the overall construction mode of "main structure - keel support system - metal perforated plate" is formed.

· Connection and fixation of perforated plate

The connection between perforated plate and main structure generally adopts discontinuous indirect connection, mainly including bolt connection and riveting; Continuous connection mainly includes welding and bonding.

At present, discontinuous connection is generally used, because the overall structure of the skin has better toughness, which is convenient for disassembly, maintenance and renewal in the future. According to different metal materials, the connection methods are also different.

04.Cost

The price of perforated aluminum plate is mainly determined by its alloy composition, aluminum plate thickness and hole pattern.

Generally speaking, the higher the composition of precious metals in the alloy, the higher the price; The thicker the thickness, the higher the price; The more complex the hole, the higher the price.

The external facade metal perforated aluminum plate process cost is 800-1000 yuan / square meter (for reference only).

05.Widely used

Due to its various hole shapes and different arrangement modes, perforated aluminum plate has a beautiful shape and a very good decorative effect. It is easier to help architects and designers meet their own design ideas and concepts and give more styles and designs to buildings.

Perforated aluminum plate has beautiful shape, elegant color and good decorative effect. It can be used in public buildings such as hotels, restaurants, cinemas, studios and medium - and high-end civil buildings to improve sound quality conditions. It can also be used in various workshops and civil air defense basements as noise reduction measures. It has become the main product popular in the decoration market in recent years.

Application case:

ONE  External facade curtain wall

The library of Chongqing real estate Vocational College combines glass curtain wall and perforated metal plate to form the characteristics of each facade.

The interior of the library roof adopts the concept of "starry sky". Through the change of density, four patterns are designed on the perforated aluminum plate. Through careful design and layout, a "nebula" like pattern is formed.

All aluminum plates are spliced with a length of 2000mm*1200mm as standard parts, including perforated aluminum plates with four patterns and a solid aluminum plate without holes. A total of five patterns form the pattern on the inner surface of the North roof.

The four patterns of perforated plates are divided into ABCD patterns according to the density of the opening rate. On this basis, perforated aluminum plates with four patterns of a'b'c'd 'rotated 180 ° are set, and a total of 9 kinds of aluminum plates are distributed.

Qingdao Hechang Yunxi bank presents a sense of entity in the facade of the building wrapped by white perforated aluminum plates, which does not completely shade the light.

The architect designed a modular standard gradient perforation module with built-in lighting equipment. Therefore, no matter inside or outside the building, day or night, the building will show a sense of glittering details. It is the so-called "the journey of the sun and the moon, if out of it, the stars and the Han are brilliant, if out of it."

Tonal lighting echoes with the external space, giving people a strong sense of artistic atmosphere in a unified and coordinated way.

TWO  Interior decoration

Perforated aluminum plate can be made into various shapes and is a good interior decoration.

For example, Wutopia lab created a three-dimensional green landscape with perforated aluminum plates in the old industrial zone of Shanghai.

In the office building, perforated aluminum plates are used as ink and brush, and the facade, landscape, lobby, office and roof are connected in a way of freehand landscape to form a three-dimensional, complete and continuous green landscape scroll.

Wutopia lab has built Suzhou zhongshuge, a bookstore in the metal rainbow in Suzhou.

The "Rainbow" in the room is made of perforated aluminum plates with petal patterns. When the perforation rate exceeds 50%, the aluminum plate visually loses the texture that the metal should have, and the multi-layer aluminum plates are stacked together, like many layers of veils. The metal that has lost its texture eventually creates a hazy and uncertain visual effect, presenting a stunning effect.

THREE  Ceiling design

The perforated aluminum plate on the top of the lobby in the dust forest of Chongqing Longhu Lake and the tree projection design fully hide the philosophy of life and experience the immeasurable sense of life ceremony.

In an apartment project in Singapore, three different ceiling designs are designed in the interior. Two of the vaults are designed with perforated aluminum plates to filter the sunlight into warm light suitable for work and relaxation.

FUOR Stair design

The custom porous aluminum duplex structure of outdoor stairs built by K+ space in Thailand allows people to interact with the space.

The stair railing of Hangzhou canal Vanke center · innovation experience center adopts orange perforated aluminum plate. This bold and sculptural stair system visually creates the impression that the floating circular building is supported inside, and becomes the visual focus in the space, guiding people to walk up and down inside the building.

FIVE  Balcony railing design

The balcony of the apartment below is an innovative design with perforated panels. The panel system has been completely manufactured when it is delivered to the site. It can be installed very quickly and simply. It not only has good lighting and ventilation, but also ensures privacy and fall prevention.

Small tips

When selecting perforated aluminum plates for the project, the following items need to be noted:

1.Determine the hole diameter. The hole diameter is one of the influencing factors of perforated aluminum plate unit. Controlling the hole diameter, hole spacing and arrangement can affect the visual clarity of perforated staggered plate skin and create novel visual effects. Combined with factors such as perforation rate and plate thickness, it can reduce solar radiation and energy consumption.

2、Determine the plate type. The selection of plate type affects the strength of perforated aluminum plate, and then affects the size of perforated plate module, the number of keels for connection, and the overall effect expression.

3、Select metal alloy and panel thickness. When perforated aluminum plate is used, the metal alloy will affect the overall aesthetic feeling of the finished panel. The thickness of the panel will depend on the position used. The thicker panel is suitable for the environment with large wind load.

4、Specify the details of aluminum plate. For individual projects, it is necessary to determine whether the perforated aluminum plate has a frame and what stiffeners are required.

Data and pictures from material commune