How to Handle Aluminum Strip Oxidation After Delivery
Oxidation of aluminum strip during or after shipping is a common issue, especially in regions with high humidity or long transit times. While aluminum naturally forms a protective oxide layer, excessive white spots, discoloration, or surface film can affect usability in sensitive applications like transformer winding.
Identify the Type of Oxidation
Upon receiving the aluminum strip, conduct a surface inspection. Common signs of oxidation include:
- White or gray powder on the surface
- Dark or discolored patches
- Rough or uneven surface texture
Mild Oxidation: Cleaning Solutions
If the oxidation is superficial, use the following methods:
- Clean with a neutral detergent and warm water, using a soft cloth
- For tougher spots, use diluted citric acid or alcohol-based solution
- Rinse thoroughly and dry with lint-free material
Severe Oxidation: Surface Re-treatment
When oxidation has penetrated deeper or left permanent marks:
- Mechanical polishing or brushing may be required
- Recoating or rewinding the strip may be necessary for electrical applications
- Contact supplier for replacement or technical support if the strip no longer meets specifications
How to Prevent Future Oxidation
- Store aluminum coils in dry, ventilated warehouses
- Keep packaging sealed and moisture-proof before use
- Request VCI paper, vacuum packaging, or wooden crate sealing for exports to humid areas
Work with a Reliable Supplier
Professional aluminum strip suppliers often provide customized packaging solutions for export shipments. Before shipment, anti-oxidation surface treatment, desiccant placement, and humidity monitoring can greatly reduce the risk of in-transit corrosion.
Need expert support for handling aluminum strip oxidation? Contact our technical team for free consultation, cleaning guidance, or packaging upgrades.
