The oxide film has a great influence on the quality of patterned aluminum plate. Oxide film refers to the thickness, porosity and transparency of aluminum plate in the production process. Keeping the film thickness of aluminum plate above 10um, porosity and transparency can be achieved, so that better dyeing quality can be obtained.
In the process of dyeing, aluminum plate can be divided into cold dyeing and hot dyeing. Cold dyeing takes a long time, and the color uniformity is well controlled in the dyeing process. The use time of thermal dyeing is relatively short, but it is difficult to control the color in the dyeing process. The temperature of hot dyeing is generally 10-60 ℃. If the temperature is too high in the dyeing process, the adsorption of dyeing will be reduced, which is easy to cause the surface of aluminum plate to bristle.
The influence of raw materials on aluminum plate在生产过程中，对高纯铝、铝镁和铝锰合金进行阳极氧化，其中着色功能更好，并可染成多种颜色。对于含硅或含铜较重的板材，在染色过程中只能染成深色和黑色，颜色较单调。
In the production process, high-purity aluminum, aluminum magnesium and aluminum manganese alloy are anodized, of which the coloring function is the best and can be dyed into many colors. In the process of dyeing, only dark color and black color can be dyed for the heavy plate containing silicon or copper, and the color is monotonous.
There is a certain relationship between the concentration of aluminum and dyeing. If the aluminum plate is dyed light, the concentration can be reduced a little, while when it is dyed dark, the concentration can be increased a little.
Generally, the color of light dyed aluminum plate is 0.1-0.39g/l, light dyed is 1g / L, dark dyed is 3-5g / L, and dense dyed is 10-15g / L. If the required dyeing concentration is high, there will be color imbalance or floating phenomenon, which is easy to produce flowing color in the process of cleaning and sealing.
In order to improve the adsorption property of dyeing, low concentration dye can be used to extend dyeing, so that the dye can penetrate into the oxide film more evenly, making the dyeing more harmonious and firm.
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