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Technical Classroom | Chemical Conversion Treatment of Aluminum

Release time:

2019-05-15 23:48

To ensure the consistency of color and shade in anodized dyed parts, consider the following aspects

Control of Process Parameters:

The process parameters during anodizing significantly impact the color of dyed parts. Factors such as current density, electrolyte concentration, temperature, and anodizing time can alter the thickness and pore structure of the oxide layer, affecting dye absorption and coloring. By strictly controlling these parameters, you can achieve consistent oxide layer formation, ensuring uniform color.

Use Consistent Dyes:

The dye or pigment solution used should be consistent to maintain color uniformity. When selecting dyes, ensure they have uniform composition, concentration, and properties. Using the same batch of dye or sourcing from the same supplier can reduce the chances of color variation.

Uniform Dyeing Process:

During dyeing, make sure the dye covers the entire oxide layer surface evenly to avoid uneven coloring or blotches. Proper dyeing time and temperature, along with thorough stirring of the dye solution, can help enhance the uniformity of the dyeing process.

Strict Control of Dyeing Time:

Controlling dyeing time is crucial for color consistency. Dyeing for too long can result in a darker color, while too short a time can cause the color to be too light. Carefully control the dyeing time based on the desired color depth to ensure uniformity.

By focusing on these areas, you can achieve consistent and uniform coloration in anodized dyed parts.