How To Do Anti Corrosion Treatment For Steel Structure Components

How To Do Anti Corrosion Treatment For Steel Structure Components

When carrying out anti-corrosion treatment of steel components, the surface of steel components treated by shot blasting or sandblasting should generally meet the national standards.

SA2.5 level or above, the minimum is not lower than SA2 level, the treated parts should be painted with primer within 8 hours. The primer generally adopts red dan alkyd anti-rust primer, inorganic zinc-rich primer and epoxy Zinc primer.

The better anti-corrosion ability is the zinc-rich primer. The content of zinc powder in the dry paint film can reach more than 80%, which plays a good emergency protection role and prevents galvanic corrosion. The intermediate paint is mostly scaly intermediate paint, and the paint film pigments are arranged in layers, which can improve the shielding effect of the coating, increase the penetration resistance of water vapor and carbon dioxide, and play a role in enhancing the anti-corrosion effect.

The topcoat is mostly alkyd blend paint, aliphatic polyurethane paint, or epoxy topcoat and fluorocarbon paint with better corrosion resistance.