Aluminum plate is a relatively common material in life, and it is used in all walks of life. In addition to the common primary colors, aluminum plates can also be processed into colors to achieve the visual pursuit of decoration. However, there is often no coloring during processing. Why does this happen? The following small series of aluminum plate manufacturers will share with you the reasons and solutions for this situation.
The dye used has been dissolved or moldy: At this time, the dye needs to be removed and replaced, and a suitable dye should be used.
Poor conductivity: The anode copper rod or the negative lead plate is loose, resulting in poor conductivity. The electrical conductivity can be ensured by regularly cleaning the anode copper rod and the negative lead plate.
The film thickness is not enough: check whether the anodizing process is standard, and see whether the temperature, working voltage, conductivity and other factors are stable. If there is any abnormality, it can be adjusted to restore the standard. If there is no abnormality, air oxidation can be increased moderately. time to ensure that the film thickness is qualified.
After air oxidation, the steel parts are placed in the stainless steel sink for too long. In terms of time, aluminum plate manufacturers believe that it is better to choose immediate dyeing agent, but if this has happened, the painted aluminum sheetscan be placed in an anode treatment tank or a sodium cyanide neutralization tank, and the dyeing agent can be used after moderate neutralization activity. , the actual effect will be very good.
The air oxidation temperature is too low, resulting in high film density: the air oxidation temperature can be moderately increased.
The pH value of the dye solution is too high: the pH value can be adjusted to the standard value with glacial acetic acid.
The above are the reasons and solutions for the non-coloring of aluminum plates summarized by the editor of the aluminum plate manufacturer. I hope it can help you in your processing. Our company is a professional manufacturer with many years of experience, rich experience and guaranteed product quality. If you need it, you can call our company for consultation and ordering.