Thick steel structure fire retardant coating and its construction technology

Thick steel structure fire retardant coating sprayed on the surface of the steel components, fire rely on the coating itself is not flammable and low thermal conductivity of the formation of refractory and insulating protective layer, slow fire direct invasion of the load-bearing elements, in order to effectively improve the fire resistance of the steel structurelimit. Thick fireproof coatings with non-corrosive steel, not chemically react with any anti-corrosion primer, odorless, coating quality light (structural load weight relative to light), the unit coated area in case of fire, do not produce smoke, does not release harmful gases and other characteristics, it is applied to a variety of new construction, expansion and renovation of industrial and civil engineering load bearing steel structure fire painting and fire protection. stone coated metal roofing tile

Construction technology of thick fireproof coatings

1, fire retardant paint before painting, surface rust and anti-rust primer coating of the steel members shall comply with the design requirements and national existing specification should completely remove dust, oil and other debris in the surface of the steel members.

2, fire retardant paint coating before and not damaged in the follow-up project under the conditions in the interior. Construction, does not require fire protection walls, doors, windows, mechanical equipment and other components such as masking.

3, before spraying brush again Dongan steel interface agent, agent to be interface is dry, spray or trowel coating. Before coating powder: latex = 1:1 ratio mixing evenly, so that was no lumps thick fluid state. Thin consistency should be based coating methods may be, in order to facilitate the construction, not flowing strong bond is appropriate. Large-scale steel for extra-wide steel frame network should be added to prevent paint lacuna or separation.

4, spraying coating, with Bump bucket gun, an air pressure of 0.6 to 0.8MPa, the diameter of the spray nozzles should be 6 to 10 mm. Spray gun perpendicular to the coating surface of the member, preferably 40 ~ 60cm. stone coated steel roofing tile

5, spray the first pass is also not too thick, until dry and then again under construction, preferably not flowing, until it reaches the standard required thickness.

6, wipe coated by coating fire retardant coating method for coating concrete.