Tangshan novel desulfurization tower corrosion, construction 5.1 Preparation method: The paint stir thoroughly until no sediment bottom of the barrel, in accordance with stirring paint: curing agent is 10: 1 (by weight) is added special hardener and stir well, good preparation The coating is placed 10 to 15 minutes before use. 5.2 Surface treatment requirements: steel structure, substrate processing Sa2.5 level required to achieve the standard rust or rust by hand; it can be used chemical rust, required to achieve no oil, no rust, no foreign body, dry cleaning, descaling After the steel substrate surface shall, within four hours priming. 5.3 Construction Points for Attention: ① weld steel surface shall reach the surface without edges, smooth, no weld, no glitches. If the weld is higher than 2mm, then tune into talcum powder primer and putty suitable viscosity, wipe dry after the primer surface on both sides of the weld, and evenness, making the transition surface to avoid when wrapped around the glass cloth vacuum; ② were thick coating when construction is appropriate to not flowing, the preparation is generally not necessary to add thinner, but if the ambient temperature is too low, the larger viscosity, can add thinner 1% to 5%, while appropriate to increase the curing agent ; ③ when the construction should be mindful of the weather and temperature changes, rain, fog, snow or relative humidity is greater than 80%, not construction; ④ glass cloth thickness of 0.1mm or best 0.12mm, latitude and longitude density of 12 × 10 root / c㎡ or 12 × 12 lines / c㎡ specifications or alkali degreasing E glass cloth, damp cloth after glass should be dried before use; ⑤ mending methods: mending ride pipe coating and corrosion layer receive less than 100mm, the surface treatment required to achieve lap at St3, wipe, no dirt; ⑥ wound up methods: First remove the coating has been injured, if not exposed basement, just fill in the coatings, glass mesh cloth coat has filled; ⑦ visual inspection: for coating pipes shall check by the root, and to do anti-corrosion coating smooth, no wrinkles and blow. Check: Available spark leak detection, the rating of 2000V, strengthening the level of 3000V, especially to strengthen the level of 5000V, per 45 square meters of not more than one occurrence of a spark, is qualified. If failed, must make up at James. 5.4 Theoretical spreading consumption: If you do not consider the impact of the actual construction environment when painting, coating method, coating technology, surface condition and structure, shape, surface area, size, etc., paint consumption per square meter in general is about: light Grade: Primer 0.23kg / m, paint 0.36kg / m; general level: Primer 0.24kg / m, paint 0.5kg / m; in class: Primer 0.25kg / m, paint 0.75kg / m; Strengthening level: Primer 0.26kg / m, paint 0.88kg / m; special strengthening class: Primer 0.27kg / m, paint 1.11kg / m.