?What is aluminum anodizing
Many metals tend to oxidize and a relatively stable layer of oxide forms on them. Under certain conditions, this layer of oxide is protective and prevents corrosion of the metal surface. In practice, by using this property, they strengthen or cause the oxide or hydroxide layer on metals. This type of surface treatment is called conversion or oxide coating.
This oxide layer can be created on metals in two ways:
Chemical method: due to the adsorption of metal or metal oxide on the surface, which creates a stable layer. Such as: achromatizing.
Anodic or electrochemical method: In this method, metal oxide is formed under controlled conditions and is completely compacted or will be compacted and impermeable due to subsequent operations. Such as: anodizing aluminum.
Aluminum is also oxidized under normal conditions so that in the presence of air and usually a layer of non-porous oxide is formed on the surfaces of aluminum parts, which is responsible for protecting the metal surface in the environment, but the advantage of the oxide is created. In the anodizing method, it is more resistant to corrosion than natural conditions. This method uses the high resistance of Al2O3 aluminum oxide coating layer against corrosion that is formed immediately on the surface of freshly cut aluminum. This layer is the natural corrosion resistance agent of this metal. This layer, which is formed naturally, is very thin, sticky and protective. Anodizing is actually a kind of thickening of an oxide layer to a thickness of several thousand times the thickness of a normal oxide layer. The result is a hard layer with a thickness of about 25.5 microns on the entire surface of aluminum, which in addition to corrosion resistance against abrasion is also strong enough.
In general, anodizing is performed to increase the physical and chemical resistance of aluminum sheets.
Steps of anodizing aluminum profiles
Anodizing is an electrochemical process for thickening wetting of oxide layers on active metals such as aluminum. Anodizing operations on aluminum profiles include various stages of surface preparation.
These steps are summarized as follows:
1- Degreasing and cleaning with solvents or alkalis
2. Peeling or etching with soda solution, which leads to opacity of the surface.
In general, anodizing is performed to increase the physical and chemical resistance of aluminum sheets.
Steps of anodizing aluminum profiles
Anodizing is an electrochemical process for thickening wetting of oxide layers on active metals such as aluminum. Anodizing operations on aluminum profiles include various stages of surface preparation.
These steps are summarized as follows:
1- Degreasing and cleaning with solvents or alkalis
2. Peeling or etching with soda solution, which leads to opacity of the surface.
3- Anodizing: Creation of oxide coating by electric current on aluminum surface in sulfuric acid bath
4- Electrocalring: painting the porous surface with mineral metal salt using electric current
5- Sealing: At this stage, the holes of the porous film are hydrated (hydrated aluminum oxide / bohemite H2O) and filled.
The anodizing process is performed on aluminum profiles for the following reasons:
A) Increase the resistance of the profile against corrosion
B) Increase the adhesion strength of paints
C) as one of the plating steps
D) Create a suitable appearance
E) Insulation
G) Increased abrasion resistance
During the process of anodizing aluminum profiles, the profile can be turned into beautiful colors and given beauty and strength, as a result, profiles with beautiful and attractive colors are produced, the surface of which can be easily washed with hot water and does not require any cleaning and It has no maintenance and is naturally corrosion resistant.
Anapaizing lines of Akpa Iran Company
Anodizing lines are one of the most important units in the production process of aluminum profiles. The quality of the anodized profiles in the anodizing unit of Akpa Iran Company is competitive with first-class imported profiles and this company has been able to best meet the needs of the country in this field.
The quality of the surfaces formed in the anodizing of aluminum profiles depends on various factors such as the completeness of the equipment and their correct use, which Akpa Iran Company is equipped with the best equipment in the field of anodizing.
The anodizing line of Akpa Iran Company is one of the most complete anodizing lines in the country and Akpa products are competitive with the top brands of aluminum profiles in international markets. In addition to anodizing lines, Akpa Iran Company is also equipped with a decorative and electrostatic line of aluminum profiles.
