What are the specific factors of color difference on the surface of color aluminum sheet metal?

color aluminum sheet metal

1. Dyeing solution temperature.

The dyeing of aluminum sheet can be divided into cold dyeing and hot dyeing. Cold dyeing takes a long time in the production process and has a good grasp of color uniformity. The use time of thermal dyeing is short, but it is difficult to manipulate the color. The thermal dyeing temperature is generally 40 ℃ and 60 ℃. If the temperature is too high, the adsorption of dyeing will be reduced, which is easy to blossom on the surface of color aluminum sheet metal.

2. Effect of oxide film on the quality of aluminum sheet.

Oxide film refers to the thickness, porosity and transparency of aluminum sheet. The thickness of oxide film in aluminum plate can be maintained above 10 microns, porosity and transparency can be obtained, and the best dyeing quality can be obtained.

3. Concentration of dye solution.

The concentration of dyeing solution is related to dyeing. After coloring aluminum sheet, the concentration is low and the dark concentration is slightly higher. If the dyeing concentration is high, uneven color or floating color will be produced, which is easy to appear in the process of cleaning and turning off "flow color". In order to improve the adsorption capacity of dyes, low concentration color is used to prolong the dyeing, so that the dye molecules penetrate more evenly into the depth of oxide film pores, making the color more harmonious and firm.

4. Influence of raw materials of aluminum sheet parts.

Generally, high purity aluminum, aluminum magnesium and aluminum manganese alloys have the best dyeing performance and can be dyed into a variety of colors in the production process after anodizing. For plates with heavy silicon or copper, they can only be dyed dark and black in the dyeing process, and the color is more monotonous.