One, should steel structure be primed for corrosion protection or fire resistance first?
Applying anti-corrosion and fire-resistant coatings to steel structures should comply with the relevant methods and quality requirements for the application of fire-resistant coatings for steel structures as specified in the "Technical Specification for the Application of Fire-Resistant Coatings for Steel Structures." The specific methods are as follows:
1、Remove rust from steel structures and ensure the steel structure surface is clean.
2. Subsequently, apply anti-corrosion coating. The anti-corrosion coating should be carefully controlled regarding viscosity, thickness, and consistency. Thorough mixing is essential to ensure uniform color and viscosity.
3. Reapply fire-resistant coating. The application process should follow the sequence of: first, top to bottom; then, left to right; then, inside to outside; then, difficult areas first, followed by easier areas; and finally, apply in an alternating pattern.
Two. Application method for steel structure coatings using a brush
1、Remove rust, dust, and oil stains from the interior steel beams.
2. Manually clean the steel structure surface where leakage has occurred, and re-apply anti-corrosion primer to localized areas.
3. Apply two coats of epoxy intermediate coating, achieving a thickness of 60 micrometers.
4. Apply two coats of BS-1 acrylic polyurethane topcoat, achieving a thickness of 70 micrometers.
5. Apply a thin-layer fire-resistant coating, achieving a thickness of 1.99mm, and ensuring a fire resistance rating of 2 hours.
6. Designers with aesthetic requirements can also apply a coat of paint on the surface of the fire-resistant coating.