Talk about the lightning protection features and fire safety characteristics of curtain wall aluminum panels.

    The lightning protection characteristics of curtain wall aluminum panels have been a topic of ongoing debate in the industry. Manufacturers of fluorocarbon coated aluminum panels have found that people often assume aluminum panels are pure aluminum, which has better conductivity. Regarding this issue, a test was conducted in a biological laboratory in Germany using two types of materials to resist lightning strikes. The results showed that at the moment of a lightning strike, regardless of whether aluminum composite panels or aluminum single panels were used, the curtain wall interface method could completely prevent electric shock; when subjected to lightning current, melting easily occurred at the lightning strike points on the metal or metallic surface, while plastic aluminum panels had a relatively higher lightning protection characteristic.

    Both products have lightning protection characteristics, and from a cost-performance perspective, aluminum panels are more suitable. The fire safety feature of aluminum panels is that they are non-combustible, which is well known. Initially, aluminum composite panels were not fire-resistant, but with the continuous advancement of aluminum composite technology, fire-resistant metal composite panels have been manufactured by adding fireproof materials to their PE. Although they have certain fire resistance, they do not meet the fire safety requirements of engineering projects.

    How to customize curtain wall aluminum panels?

    After the aluminum panels are processed and formed by the punching machine, they need to undergo surface grinding and polishing treatment before coating to enhance the adhesion of the surface during painting. After grinding and polishing, the surface of the aluminum alloy panel must not have rough sandpaper marks or visible weld seams; the surface must be free of cracks, and the depth of imperfections on the decorative surface must not exceed 0.05mm, while the imperfections on the non-decorative surface must not exceed the allowable negative deviation of the steel plate thickness.

    The surface roughness of the aluminum alloy panel should reach 5-10μm. After grinding and polishing, the punched aluminum panels need to undergo pre-treatment processes such as water washing, acid pickling and passivation, and drying to thoroughly remove residues and waste from the surface of the aluminum alloy panel; a scientific and reasonable painting suspension method should be developed before painting to avoid deformation of parts due to improper load-bearing. During painting, the topcoat, paint, and primer from the same manufacturer should be used together, and paints from different manufacturers should not be mixed to avoid affecting the performance of the painted products and other unpredictable issues. Strict control of the dry film thickness of each coating should be based on reference standards and the requirements of building coating suppliers.

    The punching machine curtain wall aluminum panel manufacturer first purchases full panels or purchases aluminum alloy panels to cut full panels according to the leveling line. Through a series of processes such as rounding corners, grooving, manual carving, numerical punching, sheet metal bending, welding, grinding and polishing, punching, and assembly, various shapes are created to meet different customer needs. After the aluminum panels are formed, they undergo pre-treatment processes such as acid pickling and passivation, water washing, and then painting. Painting is divided into fluorocarbon paint and electrostatic powder coating; fluorocarbon paint is generally used for the surface treatment of exterior decorative aluminum panels, with various colors that are bright and have a long shelf life. It can also be sprayed to imitate wood grain or stone colors according to customer needs. The aluminum panel production equipment is designed for generalization, modularization, and ease of creating production lines, which can efficiently process large quantities of products while also handling complex shapes of individual products.