2024 aluminum plate will go through surface treatment before use, and sometimes oxidation treatment is needed. In the oxidation process, plum quin-shaped spots will be produced. What are the main causes?Next 2024 aluminum plate manufacturers to give you a specific introduction.

The quincun-shaped spots vary in size and are not regular everywhere, mainly because:

(1) When 2024 aluminum plate is produced in summer, snow spots mostly appear in hollow aluminum profiles with large sections and aluminum profiles with thick extrusion walls.

(2) When the Zn content is between 0.02% and 0.045%, whether there are quincunlike spots on the surface is mainly related to the rate of air-cooled heat treatment.

(3) In summer, when the content of Zn exceeds 0.02%, such as 2024 aluminum plate, the surface will be prone to snow spots.But in the winter production time is not easy to appear snow spot defect.

(4) Small snowflake spots on the surface of 2024 aluminum plate are not corrosion resistant.

The reason for the plum dot on the surface of 2024 aluminum plate is introduced here. If you want to know the price of 2024 aluminum plate, please contact us.