With the development of process technology, the weight of aluminum composite panel used in people's life is getting higher and higher, and the color is no longer as monotonous as before. The current aluminum plate processing can color the color you want, but when we color the aluminum plate, it is inevitable that we will encounter the situation that the color cannot be dyed. Then, the reasons why the aluminum plate cannot be dyed and the treatment methods are as follows:
brushed aluminum plate
1. Insufficient thickness of anodized film: The solution is to check whether the anodizing process is standardized, and see whether the temperature, voltage, conductivity and other factors are stable. If there is any abnormality, please adjust the specification accordingly. Ensure that the film thickness is up to standard.
2. The pH value of the dye solution is too high: at this time, glacial acetic acid can be used to adjust the pH value to the standard value.
3. The workpiece has been left in the water tank for too long after oxidation: timely dyeing is advocated. If this situation has occurred, the workpiece can be placed in an anodizing tank or a nitric acid neutralization tank for proper activation treatment before dyeing, and the effect will be very good. it is good. 4. The selected dye has been 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 electrical conductivity: It is possible that the anode copper rod or the cathode lead plate is in poor contact, indicating that the batch has poor electrical conductivity. Pay attention to cleaning the anode copper rod and cathode lead plate to ensure good electrical conductivity. The above is about the causes and treatment methods of aluminum plates that cannot be dyed. At present, aluminum plates have become a common material in the field of construction, which is widely used in building exterior walls, interior walls, advertising signs and other decorative fields.
However, as people have higher and higher requirements for the aesthetics of decorative products, the aluminum plate with single color and rigid pattern can no longer meet the production needs.