The method is as follows:
1. Control the thickness of the oxide film
Oxide film refers to the thickness, porosity, and transparency of the aluminum film. The film thickness of the 5052 aluminum sheet is kept above 10 μm, and the porosity and transparency can obtain excellent dyeing quality.
2. Select the raw material of the 5052 aluminum sheet.
General high-purity aluminum, aluminum magnesium, and aluminum manganese alloy in the prodsuction process after anodizing dyeing function is the best, can be dyed into a variety of colors. For heavy silicon sheets or copper sheets, the dyeing process can only be dyed dark black, the color is relatively monotonous.
3. Control the temperature of the dyeing solution.
The dyeing of the 5052 aluminum sheet can be divided into cold dyeing and hot dyeing. Adopt cold dyeing, long use time in the prodsuction process, and good dyeing uniformity. Heat dyeing takes a relatively short time, but the color is difficult to control. The temperature of thermal dyeing is usually 40-60℃. The too high a temperature will reduce the adsorption of dye, easy to lead to the surface of the aluminum sheet bloom.
4. Master the concentration of the dye solution.
The concentration of 5052 aluminum sheet is related to staining. If the aluminum sheet is dyed a light color, the concentration can be lower and the dark color can be higher. Usually, the lighter color of aluminum sheet material is 0. It’s 1-0. 39g/L, the light color is 1g/L, the dark color is 3-5g/L, and the strong color is 10-15g/L. If the dyeing concentration is high, the color will be uneven or floating, and it is easy to appear “color flow” when cleaning and closing. In order to enhance the absorption of dyeing, a low concentration of color will be used for extended dyeing, so that dye molecules more evenly penetrate deeper into the pores of the oxide film, dyeing color will be more harmonious and firm.
The above is about how to solve the dyeing problem of the 5052 aluminum sheet. 5052 aluminum sheet is mainly used for high plasticity and good weldability. It is a liquid or gas medium that works in low-load areas such as E-mail, gasoline or lubricating oil tubes, and various liquid containers. Also commonly used for transport vehicles, ship sheet metal parts, instruments, street lamp support and rivets, hardware prodsucts, electrical shell, etc.