Aluminum alloy profile is a kind of non-ferrous metal structural material widely used in industry. The oxidation surface treatment of aluminum alloy can achieve strong anti-oxidation ability, greatly extend the aging and discoloration of aluminum alloy, and so on.

The oxidation surface treatment of aluminum alloy involves many disciplines, including metallurgy, chemistry, information science, etc. Aluminum and its alloys are passive in the atmospheric environment, so the traditional black metal surface treatment skills have poor adhesion on their surfaces, and it is difficult to achieve satisfactory maintenance.

1. First of all, the quality of aluminum rods is better, and the quality should be controlled during crystallization and filtration.

2. Then clean the aluminum bar before heating.

3. During the heating process, keep the heating uniform and the temperature control reasonable.

4. During the extrusion process, pay attention to the change of the nitride layer of the die. Pay more attention to the production of aluminum alloy profiles.

5. In the process of heat treatment aging of aluminum alloy profiles, the hardness of aluminum surface should be improved as much as possible to effectively prevent surface scratches and scars.

6. Before anodizing, properly clean and package the aluminum alloy profile.

What are the factors that affect the service life of industrial aluminum profiles?

Industrial aluminum profile is an alloy material with aluminum as the main component. Aluminum bars can be obtained with different cross-sectional shapes by hot melting and extrusion. However, the mechanical properties and application fields of industrial aluminum profiles are different with different proportions of added alloys.

As one of the main varieties of aluminum profiles, industrial aluminum profiles are widely used in machinery, transportation, electronics, petroleum, light industry, chemical industry, aviation and other fields because of their advantages of one-time extrusion, high mechanical and physical properties, good thermal conductivity and high specific strength.

What are the factors that affect the service life of industrial aluminum profiles?

First, whether to carry out surface treatment.

Generally speaking, the life of industrial aluminum profiles with artificial surface treatment is longer. Even without artificial surface treatment, the oxide film will naturally form. The difference is that the artificial oxide film formed by surface treatment is thicker, more uniform and denser than the naturally formed oxide film, which can block the air well and is more wear-resistant than the oxide film formed in the natural air.

Second, different use environments

Undoubtedly, the service life of industrial aluminum profiles in different use scenarios is also quite different. Some special industrial aluminum profiles will be used in water or in a more corrosive environment.

In this case, in order to prolong its service life, the anodizing time of aluminum profile is generally increased, the thickness of oxide film is increased, or the surface is hard oxidized. The service life of aluminum profiles used in open air and indoor places is also different.

Third, the alloy content

It is reported that there are also examples in the market to reduce the alloy content of industrial aluminum profiles in order to reduce the cost, so that the service life of the profiles produced will be affected. Specifically, the quality of industrial aluminum profiles and the content of alloy components are not enough, or there are too many other impurity components doped in the middle of aluminum profiles, which may greatly shorten their service life.

Especially iron, if the industrial aluminum profile contains a certain amount of iron, its corrosion resistance will be greatly reduced. We must pay attention to this kind when purchasing. Some factories use waste aluminum, and the surface of reprocessed aluminum is black, that is, the iron content exceeds the standard. Everyone should be careful to distinguish.

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