Reasons For Yellowing On The Surface Of Industrial Aluminum Profiles

2024-09-20 09:39:46

Industrial aluminum profiles are favored due to their excellent physical properties and wide range of applications. However, aluminum profiles may sometimes exhibit surface yellowing during use. This not only affects the appearance of aluminum profiles, but may also affect their performance and service life. Therefore, understanding the reasons for yellowing on the surface of aluminum profiles is of great significance for improving product quality and extending service life.

1、 The main reason for yellowing of aluminum profiles

1. Aging of oxide layer

The surface of aluminum profiles is usually treated with anodizing to enhance their corrosion resistance and wear resistance. However, over time, the oxide layer may experience aging, causing the surface of the aluminum profile to lose its luster and turn yellow. The aging oxide layer not only affects the appearance, but may also lead to a decrease in the corrosion resistance of aluminum profiles.

2. Environmental factors

The usage environment of aluminum profiles has a direct impact on their surface condition. In harsh environments such as high temperature, high humidity, and strong ultraviolet radiation, the material on the surface of aluminum profiles is prone to chemical reactions, leading to yellowing. In addition, oxides and pollutants in the air may also form a film layer on the surface of aluminum profiles, further accelerating their discoloration.

3. Corrosion caused by chemical substances

Aluminum profiles may come into contact with certain chemicals such as acids, alkalis, salts, etc. during use. These substances may react with the oxide layer on the surface of aluminum profiles, leading to a change in surface color and yellowing phenomenon. Especially in industrial environments, aluminum profiles often come into contact with various chemicals, making it more prone to this phenomenon.

4. Improper selection of cleaning agents

In the daily cleaning process, if a cleaning agent that is not suitable for aluminum is used, it may cause damage to the surface of the aluminum profile. Some components in cleaning agents may react with aluminum, causing the surface to turn yellow. Therefore, choosing the appropriate cleaning agent and the correct cleaning method are crucial.

5. Defects in surface treatment process

The surface treatment process of aluminum profiles directly affects their appearance and performance. If there are defects in processes such as anodizing and spraying, such as insufficient processing time and improper temperature control, it can lead to a decrease in the surface quality of aluminum profiles, resulting in yellowing.

6. Storage and transportation conditions

During the storage and transportation of aluminum profiles, if they are affected by adverse conditions such as humidity, high temperature, and strong light, the surface may turn yellow. Therefore, reasonable storage and transportation conditions are crucial for maintaining the appearance quality of aluminum profiles.

2、 Preventive and solution measures

1. Improve surface treatment process

In the production process of aluminum profiles, the parameters of surface treatment processes such as anodizing should be strictly controlled to ensure the quality of the oxide layer and reduce the occurrence of yellowing from the source.

2. Choose the appropriate cleaning agent

When cleaning aluminum profiles, it is recommended to choose cleaning agents specifically designed for aluminum materials and avoid using cleaning products containing strong acids, alkalis, and other chemical components to prevent damage to the surface of aluminum profiles.

3. Reasonable storage and transportation

During the storage and transportation of aluminum profiles, try to avoid direct sunlight and humid environments, maintain appropriate temperature and humidity to reduce the risk of surface yellowing.

4. Regular maintenance

Regular inspection and maintenance are necessary for aluminum profiles in use. Timely removal of surface dirt and pollutants, as well as maintenance of the oxide layer, can effectively extend the service life of aluminum profiles and reduce the occurrence of yellowing.

The phenomenon of yellowing on the surface of aluminum profiles is a complex problem that involves multiple aspects such as production, use, cleaning, and maintenance. By understanding the causes of its occurrence and taking corresponding preventive and solution measures, the yellowing of the aluminum profile surface can be effectively reduced, and the appearance and performance of the product can be improved. With the development of technology, there may be more innovations and improvements in the surface treatment and protection of aluminum profiles in the future, providing a more solid guarantee for the widespread application of industrial aluminum profiles.