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Causes and treatment methods of aluminum board dyeing without coloring
Nov 02, 2018

With the development of process technology, the weight of aluminum sheets used in people's lives is getting higher and higher, and the color is no longer monotonous as before. Now the aluminum plate processing can color the color you want, but when we color the aluminum plate, it will inevitably encounter the situation of dyeing and not coloring. Then, what is the cause and treatment of the aluminum plate dyeing? ?

1. Insufficient anodized film thickness: The solution is to check whether the anodizing process is standardized, and whether the temperature, voltage, and conductivity are stable. If there is any abnormality, please adjust the specification accordingly. If there is no abnormality, the oxidation time can be extended appropriately. Ensure that the film thickness is up to standard.

2. The pH of the dye solution is too high: at this time, the pH value can be adjusted to the standard value with glacial acetic acid.

3. After the oxidation, the workpiece is placed in the water tank for too long: it is recommended to dye in time. If this happens, the workpiece can be placed in the anodizing tank or in the nitric acid and the tank to be activated and dyed. The effect will be very good. it is good.

4. The dye is decomposed or mildewed: at this time, the dye needs to be replaced and the appropriate dye is selected.

5. The oxidation temperature is too low, resulting in dense film: the oxidation temperature can be appropriately increased.

6. Poor Conductivity: Poor contact in the anode copper rod or cathode lead plate may result in poor conductivity in the batch. Pay attention to cleaning the anode copper rod and the cathode lead plate to ensure good electrical conductivity.

The above is about the cause and treatment of aluminum board dyeing. At present, aluminum sheet has become a common material in the construction field, and it is widely used in decorative fields such as building exterior walls, indoor walls, advertising signs. However, as people's aesthetic requirements for decorative items are getting higher and higher, aluminum plates with a single color and a dull pattern can no longer meet the production needs.