After aluminum has corroded, it can be neutralized by following these steps:
1. First, polish the corroded parts of the aluminum alloy. You can use water sandpaper or high friction sand and fold it into small pieces. Then wipe the corroded parts of the aluminum alloy continuously to smooth the corroded parts.
2. If the corrosion is serious, consider reprocessing to remove the corroded parts. After finding the corroded location, flatten it or sand it with a grinder until it is flat and smooth.
3. Provide waterproofing and anti-corrosion treatment. Generally, aluminum alloys will have an oxide layer. If white spots appear, it may be that the oxide layer has been destroyed, or the aluminum alloy has been corroded by acids and alkalis. If scars occur, they are difficult to remove, but if there are no scars, they can be recovered. It is recommended to wash with dilute hydrochloric acid, but be careful not to take too long, and rinse with clean water after washing. If all is washed, the aluminum alloy will turn into one color.
4. If it is found that the corrosion of aluminum has improved during the cleaning process, you can continue to use a detergent with moderate pH for cleaning.
It is important to note that the process of neutralizing aluminum corrosion requires careful operation to avoid causing more serious damage to the aluminum. If the aluminum repair is not done professionally enough, it may be counterproductive and accelerate the corrosion of the aluminum. Therefore, it is recommended to seek professional help for repair and neutralization.