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Analysis of the causes of multicolored aluminum oxide surface

Release time:

2023-03-03 11:19

1. hook is not strong or tight or loose

When hanging, the hanging device should be effectively adjusted, too tight and easy to deform, too loose and easy to fall off and poor conductivity. The same electroplating hanger should ensure that the adjustment tightness is consistent, too tight or too loose commodity conductivity distance is very large, resulting in air oxidation after the occurrence of colorful conditions.

Incomplete film removal from 2. aluminum hanger

The aluminum hanger must be applied to ensure complete film removal. In addition to the film is not clean, the harm on the hanging commodity conductivity, more serious or even non-conductive.

3. hanging tool selection is not scientific

For large-scale equipment hanging, it is necessary to select an electroplating hanger with a larger hanging position and touch range to ensure good plug-in characteristics. At the same time, the electrical conductivity of the electroplating hanger is better, and the total area of electric shock should be very large, so as to avoid red heating of the hanger or even damage to the hanger during air oxidation, resulting in poor thermal conductivity. The two-terminal conductive hanging method should be used for the actual operation of hanging on longer goods.

Poor 4. conductivity

The poor contact of the conductive system software is mostly caused by unclean cleaning, which immediately affects the conductivity of the commodity. At the same time, ensure that the hanger head and the conductive rod should be in good touch, and do not need to be too loose to avoid void conductivity caused by shaking the goods in the tank liquid circulation system or when entering and leaving the tank. Special attention should be paid to the conductivity performance index of the goods in the lower tank. When the conductivity is found to be not very good, the goods should be timed again to avoid potential safety hazards caused by conductivity.

Unreasonable manipulation of 5. air oxidation standard

Air oxidation work should be carried out in accordance with the actual operation of the standardized production process. The hydrochloric acid concentration value should be filled immediately. At the same time, the air oxidation time is enough, the working voltage is within the effective range, and the equipment management status should be checked anytime and anywhere. If the processing technology standard manipulation is unreasonable, the concentration value is too low, the temperature is too low, the working voltage is too low, the time is too short, etc. are easy to cause poor conductivity and colorful conditions.

6. rework materials are not moved

When reworking the air oxidation of the lower tank of the material, it is necessary to carry out the hanging position moving work to avoid the air oxide film at the hanging position not being removed and harming the actual effect of conductivity.