Qingyuan fireproof construction requirements

Qingyuan steel construction process and technology:
1, the outer layer processing
A, if the outer steel rust without brushing, you should be rust, elimination of oil, its outer rust rating of not less than St2 level.
B, steel rust appearance after reaching the request should generally be the first time brushing rust in 4-6 hours, according to standardized brushing rust corrosion.
C, if the outer steel structure has been painted rust, they should make it look eradicate oil, floating dust, to clean can be.
D, if the appearance of painted steel rust unconventional or pursuant to a special request for an interfacial engineering process, brushing interface agent, together so that fire paint and rust completely compatible with the look of steel reinforced bond strength . The project has been painted with anti-rust paint the selected fireproof paint can not afford chemical reaction, without the need for interface treatment.

2, Qingyuan fireproof paint brush
A, anti-rust paint brush construction preparation work:
(1) open bucket: to paint the title, type and color for viewing, and are not planning rules or use the request matches the view creation date is not beyond the shelf life, does not comply should be addressed separately. After opening the bucket was found skinning scene, they should remove all patent leather, patent leather mixed with paint and not be able to avoid affecting quality.
(2) Mixing: As the proportion of each component is not the same coating, sometimes precipitated scene, so before use, you must use the bucket of paint mixing machine and all the precipitate before use after mixing evenly.
Affect the paint at the factory, have been adjusted to a viscosity suitable viscosity range of construction requested by mixing tub open to use, but because of the storage conditions, construction methods, the working environment, high and low temperatures, which are not the same situation: (3) dilution when the use is sometimes necessary to use a diluent to adjust the viscosity, the moment can be used thinner dilution, the amount should not exceed 30% participated.

B, Qingyuan fireproof paint brush construction environmental conditions:
(1) Workplace: painting work should as far as possible in the room, and the environment should be kept clean, dry, to prevent any appearance of a good brushing has to be dust, water, splashing under welding or other stolen goods while adhering to the top affecting the quality.
(2) Ambient temperature: ambient temperature control is generally carried out at a construction between 5-38 ℃ (refers to the entire coating application process to dry the coating before curing period).
(3) Relative humidity: brushing construction should be controlled relative humidity below 90%, it is possible to manipulate the steel member surface temperature above the dew point temperature. When the steel outer member condensation should not work.
(4) Other areas: after brushing to prevent rain within 4 hours, when using airless spray when the wind should not exceed five spray. In addition, steel components required at the installation site welding parts, should regulate the length of brushing aside the rules are not fire-resistant coating.

C, brushing construction of Qingyuan fireproof coatings
Thin fireproof coatings (water-based) selection of spray, thin steel structure fire retardant coating (oil-based) selection brush. Brushing should process the order from top to bottom, left to right, the first years after the outside, first tackling the difficult stretches were. Based planning and fire section presents fire rating standard and fire retardant paint inspection report to determine the thickness of the coating and priming the number of channels, namely steel columns 2.5h = 3.4mm, 8-9 Road; steel beam 2h = 2.17mm, 7-8 Road; purlins and support 1.5h = 1.68mm, 6-7 Road.