Some foreign customers purchase our company's thin flat aluminum strips and need to carry out long-distance transportation. After so many years of rich experience, our company has summarized a few points to solve the oxidation problem during the transportation of aluminum strips.
Corrosion occurs during storage and transportation after eliminating the above-mentioned water corrosion factors, aluminum strip manufacturers find that water ingress or dampness during storage and transportation is the main reason for aluminum strip corrosion, whether it is in annealed or hard state, as long as water or moisture is in, any packaging method corrosion will occur in all cases, but the corrosion in water has a characteristic, that is, there is an obvious white watermark corrosion boundary on the surface of the thin flat aluminum strips, and the part in contact with water is in a large corrosion state without obvious directionality. Moisture corrosion is complex, and there is no obvious watermark corrosion boundary. Aluminum strip manufacturers found that the hard state aluminum strip actually corrodes when it encounters water, but due to the protective effect of the oil film, the corrosion rate is much slower than that of the annealed aluminum strip.
The aluminum strip manufacturer found that the condensed water condensed on the surface and end face of the aluminum strip will be sucked into the aluminum strip due to the hair suction effect of the end face gap, forming a thin water film of 10nm ~ 1μm invisible to the naked eye, and the water film of this thickness is precisely. The most severe and fastest areas of metal corrosion.
How to avoid this kind of phenomenon:
1: Let the thin flat aluminum strips cool down naturally before packing.
2: The fan can be used to cool down the aluminum strip.
3: When packaging, the outside of the aluminum strip is first packaged with plastic cloth, and then packaged with cardboard.
4: During the transportation of goods, tell the driver to cover the tarpaulin.
5: In a high humidity environment, put more desiccant in the package. And place the aluminum strip in a relatively dry environment.