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Common dyeing problems and solutions

Release time:

2021-09-27 09:42

1, not colored

Can change the pigment, adjust the PH, improve the film thickness, timely dyeing or choose the appropriate pigment.

 

2, part of the color is not colored or light color

① Strengthen protective measures

② Increase the pigment concentration

③ Increase the film thickness

④ Clamp the workpiece and adjust the position

⑤ Change coloring liquid

Improve pigment dissolution.

 

3. After dyeing, the surface is white water mist

It can remove water vapor, adjust the concentration of fading liquid and shorten the fading time.

 

4. Flowers after dyeing

① Adjust PH to strengthen cleaning

② Improved pigment dissolution

③ Reduce the temperature of the dye solution

5. Dot after dyeing

The surface of the sample can be rinsed with water, the dye solution can be filtered, and the workpiece after oxidation can be put into the clear water tank, and the protection should be strengthened.

 

6, easy to fade after dyeing

Increase the PH, increase the temperature of the dyeing tank, extend the dyeing time, adjust the PH of the sealing tank, and extend the sealing time.

 

7. The dyed surface is easy to wipe off

① Re-oxidation

② Increase the temperature of the dyeing solution

③ increase the oxidation temperature

 

8, dyeing too dark

① Dilute dyeing solution

② Reduce the temperature

③ Shorten the time