Aluminum alloys are dyed when they are produced, but there are no colored dyes, so for this situation, we need to find out the cause and solution. Here, you and I will understand the simplicity:
1. Thickness of aluminum alloy anodized film: The solution is to check whether the specifications of the anodizing process, temperature, voltage or conductivity and other factors are stable. If there are any abnormalities, please adjust the specifications, and the oxidation can be appropriately extended without exception. time to ensure the film thickness is standard.
2. When the pH value of aluminum alloy is too high: acetic acid can be used to adjust the pH value to the standard value.
3. The aluminum alloy is left for too long after the workpiece is oxidized in the tank: to promote timely dyeing, if this happens, the workpiece can be properly activated in an anodizing tank or nitric acid neutralization tank after dyeing, and the effect will be very good.
4. Use inappropriate dyes for aluminum alloy plates: Use appropriate dyes.
5. The dye on the aluminum alloy plate has decomposed or become moldy: the dye needs to be replaced at this time.
6. Aluminum alloy is oxidized at low temperature, causing the skin to become tight: the oxidation temperature can be appropriately increased.
