Steel Structure

1. base requirements

1. The surface layer of the steel structure shall be free of dirt (including welding parts, welding residues, etc.); no floating dust, no adhesion particles;

2. The surface of the base layer must be firm, free from cracks or shells, and the flatness is ≤ 2mm,

2. base surface treatment

1. Use sand blasting to remove the particles and sundries on the surface and remove the loose rust layer on the surface; it is required to meet the requirements of st2.5 grade (chemical rust removal can also be used);

2. Check the flatness of the substrate. Large protrusions shall be sanded and leveled. Large depressions or holes shall be filled with putty and polished;

3. Inorganic Zinc-rich Primer Spraying

1. Check whether the flatness of the substrate meets the requirements, and repair the unevenness in time;

2. Construction ratio, main paint: curing agent: thinner = 8:1:2-3;

3. Spray inorganic zinc-rich primer on the surface of completely dry steel structure (air pressure is 5-8kg/cm2, water-free spraying);

4. It is required to spray evenly, not to leak spray, the color should be uniform, no flower phenomenon, wind (above level 6) and rainy days can not be constructed.

5. Inorganic zinc-rich primer shall be sprayed 2 times with the film thickness above 75um. After spraying, inspection shall be carried out. If batch scratches or bee eyes are found on the wall surface, they must be polished to meet the requirements;

6. Grinding should use 360 mesh or 420 mesh water abrasive paper, grinding should be careful, pay attention to not wear through the film;

7. The inorganic zinc-rich primer shall be sprayed for 24 hours and then polished. After polishing, dust removal shall be carried out, and the dust generated by polishing the steel surface shall be cleaned with a rag. If the dust is not thorough, after the construction of fluorocarbon paint will not be able to achieve a smooth coating;

8. After the inorganic zinc-rich primer is sprayed, the color should be uniform, the gloss should be uniform, the surface of the coating film should be smooth, and there should be no dust and other stains.

4. Cloud Iron Primer-Spraying

1. Spray epoxy micaceous iron primer on the completely dry inorganic zinc-rich primer (air pressure is 5-8kg/cm2, waterless spraying);

2, construction ratio, the main paint: curing agent: diluent = 8:1:2-3;

3. It is required to spray evenly, not to leak spray, the color should be uniform, no flower phenomenon, wind (above level 6) and rainy days can not be constructed.

4. Spray one, dry 24 hours after the next construction. Also polish the surface with 360 grit sandpaper.

5. Fluorocarbon Finish-Spraying

1. The primer must be completely dry, and the surface shall be free of dust and other sundries;

2. Construction ratio, main paint: curing agent: thinner = 10:1:2-5;

3. The fluorocarbon metallic paint must be filtered by 100 mesh gauze, and the diluent should be stirred continuously during placement to avoid precipitation;

4. The fluorocarbon surface shall be sprayed twice, and the film thickness shall be 25-30um;

5. Spray gun model: W-71, nozzle size: 1.5-2.0mm, air pump pressure: 0.3-0.5Mp;

6. During construction, the coordination of spraying number, spraying area, spraying base surface and hanging cage distribution shall be considered. Considering the actual situation of the project, the construction personnel shall be arranged to spray at the same time. Under the premise of ensuring no sagging, the spraying shall be as thick as possible;

7. Anti-pollution and anti-virus work should be done well, and downpipes should be protected. Workers should wear protective equipment such as gas masks and gloves during construction, and fireworks are strictly prohibited;

8. Spraying should be uniform, reasonable density, no sagging, uneven light and shade, flowers and other phenomena, delicate hand feeling, uniform gloss, no batch scratches and uneven phenomenon.

6. Finishing

1. The topcoat shall be sprayed on the basis of the completely dry topcoat, and the surface shall be free of dust and other sundries;

2. Construction ratio, main paint: curing agent: thinner = 10:1:2-5;

3. after the deployment of fluorocarbon varnish must be 100 mesh gauze for filtration, diluent in the process of placing should be constantly stirred;

4. The fluorocarbon metal surface shall be sprayed twice, and the film thickness shall be above 20um;

5. Spray gun model: W-71, nozzle size: 1.5-2.0mm, air pump pressure: 0.3-0.5Mp;

7. Anti-pollution and anti-virus work should be done well, and downpipes should be protected. Workers should wear protective equipment such as gas masks and gloves during construction, and fireworks are strictly prohibited;

8. The spraying shall be uniform, with reasonable density and no sagging. After spraying, the hand feeling shall be fine, with excellent gloss, uniform color and comfortable appearance.

7. cleaning and sanitation

1. Clean up the polluted places such as glass and downpipes, pay attention to the protection of other finished products, and clean up thoroughly;

2. Clean up the living quarters and inventory areas and restore them to their original conditions.

above steel structure fluorocarbon paint construction art welcome new and old customers to provide advice!