JIS G3113 SAPH440 steel plate surface treatment method and corrosion resistance

JIS G3113 SAPH440 steel plate surface treatment methods and anti-corrosion properties are as follows:

Surface treatment method:

1. Hot dip galvanizing: By dipping the SAPH440 steel plate into the melted zinc, a uniform zinc layer is formed. This galvanized treatment can improve the corrosion resistance and oxidation resistance of the steel plate.

2. Spraying coating: Use special anti-corrosion coating, such as primer, top paint, etc., to cover the surface of SAPH440 steel plate to form a protective film to prevent oxidation and corrosion.

3. Electroplating: electroplating methods include electrogalvanizing, nickel plating, etc. These coatings help to form a protective film and improve the corrosion resistance of the steel plate.

4. Phosphating treatment: By phosphating SAPH440 steel plate, a layer of phosphating film is formed to improve its corrosion resistance and oxidation resistance.

5. Sandblasting/shot blasting: The use of high-speed flow of abrasive particles to impact the surface, remove oxide, dirt and poor coating, prepare for surface coating or other coating treatment.

6. Thermal spraying: Molten metal powder or alloy is sprayed onto the surface of SAPH440 steel plate to form a protective coating and improve its corrosion resistance.

7. Anti-corrosion ointment: Apply the ointment with anti-corrosion function to form a protective layer and extend the service life of the steel plate.

Corrosion resistance:

1. These surface treatment methods can effectively improve the corrosion resistance of SAPH440 steel plates, extend their service life and reduce maintenance costs.

2. The selection of the appropriate surface treatment method depends on the specific application scenario and environmental conditions to ensure that the steel plate has good weather resistance and durability in harsh environments.

3. Surface treatment can also improve the appearance quality of steel plates and improve their market competitiveness.

4. Maintenance Regular inspection and repainting are the key to maintaining the corrosion resistance of the steel plate to prevent corrosion and repair the damaged part in time.

In summary, the selection of appropriate surface treatment methods and effective anti-corrosion measures are important factors to ensure the long-term use of JIS G3113 SAPH440 steel plate.