1. Unewal thickness of oxidized cortex. Perhaps the reason is that the temperature and concentration of the anode oxide groove fluid are uneven. At this time, it should be mixed with compressed air to deal with such questions to deal with such questions.

   
   

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2. Unewal temperature or concentration of dyeing liquid. Introduce mixing and technology to increase the number of times together.

3. The dyeing speed is too fast. The bottom of the workpiece enters the dyeing solution and Z finally gets off from the dye solution, so the bottom Z is easy to dye. The method of treatment is to adjust the dyeing dyeing, and the dyeing time is appropriately extended.

4. Poor conductivity. Perhaps the formation of the hook is formed, and it is necessary to avoid such questions.

5. The dye is too thin to increase the dye and improve the concentration.

6. The temperature of the dyeing fluid is too low. The dyeing solution can be warm to less than 60 ° C.

7, inadequate dye dissolving, or insoluble dyes floating, is prone to color difference at this moment. The treatment method is to improve dye dissolution.