Corrosion is a common and important problem during the CNC machining of aluminum parts. In order to effectively deal with and prevent the corrosion of aluminum parts, the following methods can be adopted:
1. Anodizing

Principle: Through the electrolytic process, a thick layer of aluminum oxide film is formed on the surface of aluminum parts.
Effect: This film has excellent corrosion resistance and wear resistance, and can effectively prevent aluminum parts from oxidation.
Applicable scenarios: Widely used in aerospace, automobiles and electronic product housings, etc.

2. Surface coating treatment

Spraying:
Description: Use paint or coating to spray on the surface of aluminum parts.
Advantages: Provide color and gloss while enhancing corrosion resistance.
Powder coating:
Description: Use electrostatic powder coating, which forms a solid coating after heating and curing.
Advantages: Wear-resistant, corrosion-resistant, beautiful appearance, suitable for various environments.

3. Chemical treatment

Chemical plating:
Description: A layer of metal (such as nickel) is plated on the surface of aluminum parts through chemical reaction to increase corrosion resistance.
Advantages: Ability to evenly plate on parts with complex shapes.
Silane coating:
Description: Forms a protective film on the surface of aluminum parts.
Advantages: Environmentally friendly, provides excellent water and oil resistance.

4. Regular maintenance and cleaning

Description: Regularly inspect and clean aluminum parts to remove surface dirt and corrosion.
Method: Use non-corrosive cleaners and avoid strong acid or alkaline cleaners.

5. Material and design selection

Material selection: Use corrosion-resistant aluminum alloys such as 6061 or 7075 aluminum alloys.
Design considerations: Avoid water or dust accumulation on the surface of aluminum parts to reduce the risk of corrosion.

6. Environmental control

Description: Keep the storage environment of aluminum parts dry and ventilated to avoid moisture.
Method: Anti-corrosion agents can be used to provide additional protection on the surface of aluminum parts.

7. Electrolytic protection

Principle: Use sacrificial anodes (such as magnesium or zinc) to provide long-term anti-corrosion protection on the surface of aluminum parts.
Applicable scenarios: Especially suitable for aluminum parts used in humid or corrosive environments.