China steel space frame painting process factory and manufacturers

steel space frame painting process

The steel space frame needs to be paid attention to when brushing the topcoat. The clean surface needs to be brushed twice, and the thickness meets the requirements. When operating, it should be brushed more and more, without flow or fall, with bright color, full and even, and after finishing After the work, a second inspection should be carried out to avoid omissions. The painting process of the steel space frame is divided into several steps: base surface cleaning, primer coating, topcoat coating, inspection and acceptance. The paint coating of the building steel structure project should be carried out after the steel structure is installed and accepted. Before painting, it is necessary to clean up the rust, weld coating, welding spatter, oil, dust, etc. on the coating part. Steel structure space frame anti-corrosion painting construction, surface coating with special anti-corrosion paint. At present, the main means of anti-corrosion of frame architecture, anti-corrosion paint can be divided into primer according to the protection function, middle paint and top paint. The characteristics, each responsible for its own, have been combined to form a composite coating to improve anti-corrosion performance and prolong service life. Epoxy zinc-rich primer is composed of a large amount of fine zinc powder and a small amount of film-forming binder. The electrochemical properties of zinc are higher than that of steel, and when it is corroded, it has the effect of “self-sacrifice”, so that the steel is protected. The corrosion product zinc oxide fills the voids and makes the coating more dense. As the primer of anti-corrosion coating series, the thickness is generally 30 to 40 cm. Too thick is easy to crack and peel off.

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After the rust removal, the surface of the components should be cleaned immediately, and the anti-rust paint should be sprayed.
The requirements should be in accordance with the design regulations, and the painting process should be carried out according to the operation instructions and the corresponding varieties of paints and instruction manuals. The ambient temperature and humidity during painting should be controlled by a thermo-hygrometer to ensure that the requirements of the corresponding varieties of paint technology are met. The thickness of spraying It is checked and controlled by a thickness gauge, and the thickness of each paint should be controlled according to the instruction manual. After painting, a special person should make a mark according to the requirements of the drawings. The main marks of the components include the assembly number, the height reference point, the center line of the assembly reference line, and the hanging point.