Perforated Aluminum Sheet Application Guide
Perforated aluminum sheets are made from pure aluminum or aluminum alloy through pressure processing (shearing, sawing). They have a regular cross-section and uniform thickness, and are named for the perforations on their surface; they are also called perforated aluminum sheets or perforated metal sheets. This new material combines noise reduction and decorative functions, and due to its unique structural properties, it is widely used in architectural decoration, acoustic engineering, and other fields.
Material Properties and Characteristics
Performance
① High Durability: Perforated aluminum sheets are resistant to high temperatures, corrosion, fire, and moisture. They also have excellent shock resistance and chemical stability, maintaining their performance even after long-term outdoor exposure. Their practicality is comparable to marble tiles.
② Superior Craftsmanship: Compared to other metal materials, perforated aluminum sheets have a smooth, burr-free surface, offering superior visual and tactile texture, showcasing high-end quality.
③ Lightweight and Convenient: Using lightweight aluminum sheets as the base material, combined with the perforation design, reduces weight, optimizes building load-bearing capacity, and features simple manufacturing processes while providing convenient installation and maintenance, combining practicality and economic value.
④ Green and Environmentally Friendly: Some perforated aluminum panels are 100% recyclable, making them eco-friendly materials that help buildings obtain LEED certification; PVDF-coated panels have strong oxidation resistance, withstand harsh environments, and have a long service life.
⑤ Comprehensive Functions: They reduce the shading coefficient of glass, filter sunlight, regulate room temperature, provide good ventilation and light transmission, and even small perforations can meet needs; they also have anti-theft features.
⑥ Balancing View and Safety: They can be opened flexibly to provide a wide view; when closed, they act as sturdy railings, balancing the needs of viewing and safety.
⑦ Aesthetically Pleasing: Various perforation processes create patterns, resulting in rich three-dimensional shapes and unique light and shadow effects, combining practicality and decoration.
⑧ Widely Applicable: Suitable for parking lot covering, facility shielding, and signage production, enhancing the visual appeal of a space, and providing both protection and temperature control functions.
Construct | Install
① Perforation Methods
Common perforation methods: CNC punching, stamping, laser perforation.
The most common perforation methods use CNC machining and combination punching machines for high-volume, repetitive patterns. Waterjet or laser cutting is ideal for creating custom perforations and patterns, offering a variety of hole sizes and unique shapes.
Custom perforated patterns and shapes, produced using millimeter-precision machines and other new manufacturing technologies, also allow for an unlimited variety of folded and perforated panel designs.
② Perforation Rate and Hole Diameter
Perforation rate refers to the percentage of the total area of perforated holes within the perforated area.
Perforation rate is a core factor affecting perforated aluminum panel units on building facades, influencing their overall visual appeal and reducing building energy consumption.
Currently, the highest perforation rate achievable with machinery is around 60%, requiring perforated panel sizes within the range of 1500*3000 mm. If this range is exceeded, secondary perforation positioning is required.
A higher perforation rate in perforated aluminum panels has a greater impact on the flatness of the formed panel, necessitating lower inspection standards than those for normal aluminum panels.
Aperture diameter is one of the influencing factors of perforated aluminum panel units. Controlling the aperture, spacing, and arrangement of the perforations can affect the visual clarity of the perforated panel skin, creating novel visual effects. Combined with factors such as perforation rate and panel thickness, it can reduce solar radiation heat and lower energy consumption.
The most common aperture is 6mm, with a spacing of 15mm.
③ Structural Connection of Perforated Aluminum Panels
Connection with the Main Structure: Because perforated metal panels are sheet-like and generally thin, their structural strength is relatively weak. Therefore, when used as building skin, their own strength is insufficient to support direct connection between the main structural components. Typically, a keel is required as a supporting component to fix the perforated metal panels. The keel is connected to the main structure, thus forming an overall structural method of "main structure – keel support system – perforated metal panel".
Quick Tips: When selecting perforated aluminum panels for a project, pay attention to the following:
1.Determine the hole diameter. Hole diameter is one of the influencing factors for perforated aluminum panel units. Controlling the hole diameter, spacing, and arrangement can affect the visual clarity of the perforated aluminum panel surface, creating a novel visual effect. Combined with factors such as perforation rate and panel thickness, it can reduce solar radiation heat and lower energy consumption.
2.Determine the panel type. The choice of panel type affects the strength of the perforated aluminum panel, which in turn affects the size of the perforated panel module, the number of connecting ribs, and the overall aesthetic expression.
3.Select the metal alloy and panel thickness. When using perforated aluminum panels, the metal alloy will affect the overall aesthetics of the finished panel. The panel thickness will depend on the application location; thicker panels are more suitable for environments with high wind loads.
4.Specify aluminum panel details. For individual projects, it is necessary to determine whether the perforated aluminum panel has a frame and what reinforcing ribs are needed.