How to deal with the problem of aluminum profile processing and dyeing?

​How to deal with the problem of aluminum profile processing and dyeing? Aluminum profile is an alloy material with aluminum as the main component. Aluminum rods are hot-melted and extruded to obtain aluminum materials with different cross-sectional shapes, but the proportions of the added alloys are different. Fields are also different. Then, there are basically the following reasons for the processing of aluminum profiles because they cannot be dyed. Let's find out together.

1. The thickness of the anodized film is insufficient. The solution is to check whether the anodic oxidation 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. If there is no abnormality, the oxidation time can be appropriately extended to ensure that the film thickness reaches the 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. After oxidation, the workpiece is placed in the water tank for too long. Prompt dyeing is advocated. If this has happened, the workpiece can be properly activated in an anodic oxidation tank or a nitric acid neutralization tank before dyeing, and the effect will be very good.

4. Improper selection of dyes. Appropriate dyes must be selected.

5. The dye has been decomposed or mildewed, and the dye needs to be replaced at this time.

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

7. Poor electrical conductivity. There may be poor contact between the male copper rod or the negative lead plate, which indicates that the batch conduction is poor. Pay attention to cleaning the positive copper rod and the negative lead plate to ensure good electrical conductivity.