Factors and treatment methods of oxidation and corrosion of industrial aluminum profiles

Release time:

2022-05-23

Industrial aluminum in the outdoor air oxidation corrosion factors. Aluminum in the harsh natural environment of wind and sun, which will increase the corrosion of industrial aluminum, rust is further increased.

industrial aluminum in outdoor air oxidation corrosion factors. Aluminum in the harsh natural environment of wind and sun, which will increase the corrosion of industrial aluminum, rust is further increased.

1. The film thickness of industrial aluminum profiles is not specified when air oxidation is solved. After anodic oxidation treatment of industrial aluminum profiles, a strong air oxide film will be produced on the surface layer, which can reasonably isolate the aluminum substrate and gas and alleviate the etching condition. The air oxide film thickness of industrial aluminum profiles is generally 10μ, if the air oxide film thickness should be improved in the case of outdoor applications.

2. The raw materials for manufacturing aluminum profiles contain residues exceeding the standard. The raw materials for manufacturing aluminum profiles are aluminum ingots. The product quality of aluminum rods is also related to the corrosion resistance of aluminum profiles. Some shoddy aluminum ingots are made of scrap steel and even deliberately added some cheap metal materials. The corrosion resistance of industrial aluminum profiles manufactured by the production is greatly affected, and the color tone is also different from all normal aluminum profiles. Therefore, in the purchase of industrial aluminum color black can not buy.

3, the structural strength and rigidity of aluminum profile cannot meet the standard provisions of the air pressure resistance characteristics of the geographical location of aluminum profile application, resulting in obvious plastic deformation, cracking or damage of aluminum profile bearing components, hardware fittings, hydraulic seals and bonding raw materials under the action of all normal wind loads, resulting in ineffective sealing of aluminum profile itself and oxidation of exposed air. The fundamental reason is that the product cannot be properly measured and designed according to the standard compressive strength, and there is no mechanical performance test based on air pressure resistance before production, manufacturing and installation.

4. The precision of industrial aluminum profile did not reach the regulations in the whole process of production and processing. The assembly gap was large. The part of the assembly that must be bonded was not coated with rubber seals and assembled immediately, because the cross section of industrial aluminum profile saw was not maintained by air oxide film, and it was easy to etch when exposed to the outside.

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