Does galvanized steel rust？

2024-12-09

Ⅰ. Does galvanized steel rust?

Galvanized steel plate coil is a steel surface coated with a layer of zinc to prevent oxidation and prolong the service life, and is generally not susceptible to rust. However, if the galvanized layer is broken or eroded by chemicals, rusting will result.

Ⅱ. What is the main reason for rusting of galvanized steel?

1. Broken galvanized layer: the quality and thickness of the galvanized layer for the protection of steel corrosion has an important role, once the galvanized layer is broken, the surface of the steel is susceptible to oxidation erosion, resulting in rust.

2. Chemical erosion: galvanized steel coil in certain conditions will be subject to the erosion of chemical substances, such as strong acid, strong alkali and strong oxidants, etc., these chemicals will destroy the galvanized layer, so that the surface of the steel loses its protection, which leads to rust.

Ⅲ. How to prevent galvanized steel from rusting?

1. To ensure the integrity of the galvanized layer, avoid bumping or scratching. When using galvanized steel products, care should be taken to avoid cutting the surface to avoid damaging the galvanized layer.

2. Carry out regular cleaning and maintenance to ensure the surface of galvanized steel plate is clean and shiny. Regularly inspect and repair damaged zinc coating to prolong the service life of galvanized steel.

3. Protect against chemicals. In occasions where galvanized steel sheet is used, care should be taken to avoid contact with strong chemical substances such as acids and alkalis.

Ⅳ. Conclusion

Although galvanized steel is not susceptible to rusting under normal conditions, it can still lead to rusting if the galvanized layer is broken or eroded by chemical substances. Therefore, regular inspection and maintenance to ensure the integrity of the galvanized layer and prevent the erosion of chemical substances are effective measures to prevent galvanized steel from rusting.