Surface treatment technology of S275JR steel plate

The surface treatment technology of the S275JR steel plate is essential to improve its corrosion resistance, aesthetics and mechanical properties. The following are some common S275JR steel plate surface treatment technologies:

1. Hot dip galvanizing: By soaking the S275JR steel plate in melted zinc, a layer of zinc coating is formed on the surface to improve its corrosion resistance. Hot-dip galvanizing is often used in outdoor structural parts and pipelines.

2. Cold galvanizing: Use electrochemical method to electroplate a layer of zinc on the surface of S275JR steel plate, with good appearance and corrosion resistance, suitable for some fine parts and indoor applications.

3. Spraying/coating: By spraying or coating containing preservatives or coatings, a protective film is formed to improve corrosion resistance. Different types of coatings can be selected according to the needs, such as epoxy, polyurethane, etc.

4. Anodizing: The surface of the S275JR steel plate is treated with special chemical treatment to generate an oxide film on the surface to improve hardness and wear resistance, which is often used for aluminum alloy surface treatment.

5. Sandblasting: high-speed abrasive particles are sprayed to clean the surface dirt and oxide layer, while increasing the surface roughness, which is conducive to subsequent coating adhesion.

6. Pickling: Soak the surface of the S275JR steel plate in an acidic solution to remove the oxide layer and dirt, purify the surface, and improve the adhesion of the coating.

7. Shot peening: Through high-speed injection of metal particles, clean the surface and increase the surface roughness, improve the coating adhesion and corrosion resistance.

8. Chrome plating: A layer of chromium coating is formed on the surface of the S275JR steel plate to improve its corrosion resistance and hardness, which is often used for decoration and to improve the surface luster.

The selection of the appropriate S275JR steel plate surface treatment technology needs to consider the material use, environmental conditions, budget and required performance and other factors, and make an effective decision after a comprehensive assessment.