Five reasons for industrial aluminum exposure and oxidation

by:Zeyi     2021-05-16
Some consumers may find that industrial aluminum will oxidize after being exposed to the sun after using industrial aluminum for a period of time. Many people will have doubts. Before leaving the factory, industrial aluminum has undergone layer-by-layer quality inspection. Exiled, then why do some industrial aluminum materials still show signs of exposure and oxidation after they leave the factory? Below, let's take a look at the five major causes of industrial aluminum profile exposure and oxidation. 1. The sealing materials used in industrial aluminum profiles are too poor, such as excessively hard rubber strips, short anti-aging time, expired use of sealant or counterfeit glue, poor resistance to displacement, and easy cracking. 2. The processing precision of industrial aluminum profiles does not meet the quality requirements, and the matching gap is too large. The parts that need to be bonded after assembly are not coated with sealing materials and assembled directly, causing exposure to easily penetrate into the aluminum profile and the main structure through various assembly gaps. . 3. When the industrial aluminum profile is installed on site, the assembly size is not well controlled, resulting in the mutual misalignment of the overlapped and sealed positions or insufficient overlap size, or there is a gap due to sufficient pressure, which is used to fix the fastening screw of the aluminum profile frame There is no sealant to seal, and the surface of the sealed part is not cleaned when the sealant is used for sealing. 4. The design of the industrial aluminum profile waterproof structure is unreasonable, the waterproof sealing level is not enough, and the drainage channel in the aluminum profile structure cavity is not formed. When exposed to the effect of the pressure difference between indoor and outdoor wind, it can easily enter the aluminum profile cavity and enter the room, while the exposure into the aluminum profile cavity cannot be smoothly discharged outside through the aluminum profile drainage system and stay in the aluminum profile. Accumulate water and cause oxidation. 5. The structural strength and stiffness of the aluminum profile fail to meet the requirements of the wind pressure resistance performance of the location where the aluminum profile is used, causing the aluminum profile to be stressed members, hardware accessories, seals and bonding materials to produce serious under normal wind loads The plastic deformation, tearing or damage of the aluminum profile causes the aluminum profile body to fail to seal and cause exposure and oxidation. The reason is that the product failed to correctly calculate and design the strength according to the specifications, and did not pass the physical performance test against wind pressure before production and installation. The above are the five major reasons for the exposure and oxidation of industrial aluminum to share with you. Please pay attention to the official website to learn more! Disclaimer: The content of this article is reproduced from Alcan.com. The copyright belongs to the original author. The purpose of reprinting is to convey more information. It does not mean that this website agrees with its views and is responsible for its authenticity. If the content of the work, copyright and other issues are involved, please call or write to us, and we will deal with it in a timely manner!
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