Efficient and environment-friendly oxidation technological method for aluminum alloy

Abstract

The invention provides an efficient and environment-friendly oxidation technological method for aluminum alloy. The efficient and environment-friendly oxidation technological method includes the steps of oil removing, alkaline etching, washing, anodic oxidation, electrolytic coloring, washing and recovery washing. The efficient and environment-friendly oxidation technological method involves a master controller, a PH electrode, an acid solution converter valve and a neutralizing solution converter valve. The PH electrode is arranged in anodic oxidation tank liquor. The acid solution converter valve and the neutralizing solution converter valve are used for controlling an acid solution and a neutralizing solution to be discharged into the anodic oxidation tank liquor correspondingly, the pH value of the anodic oxidation tank liquor achieves on-line control, manual regulation errors are avoided, precision is high, intelligent control is realized, the chromatic aberration problem caused by pH value instability can be effectively solved, and the rate of finished products is increased.

Description

technical field [0001] The application relates to a high-efficiency and environment-friendly oxidation process method for aluminum alloy, which is applied in the field of aluminum profile production. Background technique [0002] Aluminum profiles are widely used in the modern architectural decoration industry. Through anodizing and coloring treatment, the surface of aluminum profiles can obtain a beautiful appearance in various colors, and has strong decorative properties. However, the yield of the existing aluminum profile production line is low, and the color difference is difficult to control. The key to affecting the color difference lies in the process control of each step, especially the poor control of the pH value, which will cause serious color difference. For example, in the anodizing step, If the pH value is too low, the dissolution rate of the oxide film will increase and the film formation rate will decrease; if the pH value is too high, the dissolution rate of...

AI Technical Summary

Problems solved by technology

However, the yield of the existing aluminum profile production line is low, and the color difference is difficult to control. The key to affecting the color difference lies in the process control of each step, especially the poor control of the pH value, which will cause serious color difference. For example, in the anodizing step, If the pH value is too low, the dissolution rate of the oxide film will increase, and the film formation rate will decrease; if the pH value is too high, the dissolution rate of the oxide film will decrease, the oxide film will be dull, and even color stripes will appear, which will directly lead to color difference

In the prior art, the pH value control mainly relies on manually adjusting the pH value of the bath solution based on experience, which has poor accuracy, slow response, difficult to achieve online adjustment, and low yield

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