Chuangjiang anti-corrosion paint is a high-performance anti-corrosion system consisting of a zinc-rich epoxy primer and an acrylic topcoat. The paint has excellent anti-rust performance, strong adhesion, rapid drying at room temperature and relatively high value. Zinc powder content in the paint film. High, with cathodic protection, this system has excellent chemical resistance and excellent weather resistance, providing high protection to the support.
Product Classification
Products are divided into two types: primer and topcoat based on their uses.
Scope of application
Mainly used for steel structure roofs (inside, walls), steel pipes, storage tanks, containers, ships, offshore platforms, port facilities and harsh corrosive environments.
Construction technology
Metal structure roofing (wall, interior) anti-rust and anti-corrosion construction technology: rust removal → cleaning → anti-corrosion primer painting (spraying) → inspection and re-coating → Application an anti-corrosion finishing coat (spraying) → Application of an anti-corrosive finishing coat (spraying)
1. Rust removal process requirements: The base coat is thoroughly cleaned, and special equipment is used for grinding and rust removal. removal or sandblasting and rust removal. There should be no rust stains on the base coat and oil, grease, sand, iron sand and metal oxides should be cleaned off. After rust removal, the primer should be sprayed within six hours for anti-corrosion treatment. Before the spraying process, if it rains or causes moisture on the surfaceof base steel, wait for the environment to reach build conditions, then blow with it. dry compressed air. Remove rust after drying surface moisture; the derusted steel surface reaches Sa2.5 rust removal level. The surface should be cleaned with brushes and other tools before moving on to the next process. steel after passing rust removal will show a metallic shine. Rust stains and paint on the metal surface should not exceed 5%. If rust returned before priming, re-grind or sand to remove rust. avoid reducing roughness.
2. Cleaning process requirements: Use high-pressure cleaning equipment, the surface of the base should be clean, and the gaps, uneven parts and hidden corners of the base should be thoroughly cleaned. The base surface should be firm and flat, and any uneven or cracked areasrees must be reinforced before construction; the base surface should be thoroughly cleaned and there should be no impurities such as dirt, floating dust, debris, free water, oil or debris. objects, etc., and keep the base surface clean and hygienic at all times.
3. Anti-Corrosion Primer Process Requirements: Before construction, the base surface should be free from floating rust, wet marks, water accumulation and clean construction should not be carried out in rainy weather. Special equipment for high pressure spraying is used for construction. Building materials must be free of sediment and subject to strict inspection. Once the packaging barrel is opened, it should be used as much as possible on the same day. materials should be uniformly stirred using a special grinder to ensure high pressure pulverization duringt the construction process. Special equipment must be free from clogging, and the spraying process must be uniform, without accumulation or omission.
4. Check and repaint: focus on corners, edge joints, horizontal overlaps, vertical overlaps, fan openings, protruding roof ducts, air conditioning ducts, junctions between metal plates and parapets and screw fasteners (Carefully inspect corrosion-resistant weak links of other metal roofs (walls, interiors) such as wall corners, C-shaped steel, H-shaped steel, trunking, ceiling hangers, pipes, etc. to determine the edge joints.The corners are all sprayed on site
5. once the primer surface is dry A sp equipment.Special for high pressure spraying is used for construction. be uniformly thin and conform to the design. Requirements: Defects such as shedding, crack buildup, edge warping, bubbling, delamination, and loose ends are not permitted. The construction ensures seamless and complete coverage of the base layer. Once the project is completed, it will enter the maintenance period and no one will be allowed to enter the construction site.
Our company specializes in anti-corrosion of boiler steel frames, rust removal and anti-corrosion of power plant boiler steel frames, renovation and painting construction of furnace frames, as well as furnace frame steel structure painting projects.
Standards and regulations for anti-corrosion of boiler steel frames
1. “Technical terms of review"(GB8264-1987)
2. "Classification of the corrosivity of atmospheric environments" 》 (GB/15957-1995)
3. "Method for determining the thickness of paint film" (GB1764)
4. "Construction and acceptance code of buildings Anti-corrosion projects" (GB 50212━ 2002)
5. "Technical specifications for the safety of temporary use of electricity on construction sites" (JGJ46-88)
6. "Technical specifications for safety of work at height in construction" (JGJ80-91) < /p>
7. “Technical Safety Regulations for the Use of Construction Machinery” (JGJ33-2001)
8. “Technical Safety Regulations for Fixing Steel Pipe Scaffolding in Construction" (JGJ130-2001)
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9. "Safety Inspection Standards in Building Construction" (JGJ59-9) In addition to the above standards and specifications , this project must also comply with the standards andrelevant national specifications in force.
Boiler steel requirements for basic anti-corrosion treatment:
1.2.1 The surface of the steel structure must be smooth and welding slag , burrs, rust, oil, etc. must be removed before construction.
1.2.2 Surface treatment method can be rust removal by spraying or blasting, manual rust and power tool.
1.2.3 The level of rust removal by spraying or projection must comply with the following regulations:
1 Level Sa1: The surface of. the steel must be free of visible grease and dirt, and there must be no scale, rust, paint coatings, etc.
2 Level Sa2: Steel There must be no visible grease or dirt on the surface. , and accessories such as scale, rust and paint coatings have been essentially eliminateds, and their residues must be solid and reliable
Level 3 Sa2: There must be no visible traces on the surface of the steel. Coatings of grease, dirt, scale, rust and paint should only be spots or scratches of light spots.
1.2.4 Removal of rust by hand and with power tools. The quality must meet the following requirements:
Level 1 St2: The surface of the steel must be free of visible grease and dirt, and there must be no scale, rust, paint coating, etc.
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Level 2 St3: The surface of the steel must be free of visible grease and dirt, and there must be no attachments such as scale, rust and paint coating that is not firmly attached. The rust removal level should be deeper than St2, and the surface of the exposed part of the substrate should have a metallic luster.
1.2.5 The level of educationchemical rust removal must be Pi level: there must be no visible grease or dirt on the surface of the steel, as well as individual remaining spots of oxide scale, rust and paint coatings that do not have not been cleaned. completely stripped can be removed by hand. Or remove it mechanically. Finally, the surface should reveal the original appearance of the metal without re-corrosion.
1.2.6 The surface of the steel structure that has been treated must not be contaminated again. When polluted twice, the surface must be treated again. 1.2.7 For heavily polluted steel structures and severe corrosion. In reconstruction and expansion projects, steel structures must be surface pretreated, and the treatment methods must comply with the following regulations:
1 The surface of steel structures contaminated with grease may be eliminated by organic solvents,s hot alkaline solutions or emulsifiers and cooking fat.
2 Surfaces of steel structures contaminated by oxides or on which old layers of paint are attached can be cleaned by shoveling, baking, etc.
1.2.8 The base coat of the treated steel structure should be painted with primer in time and the interval should not exceed 5 hours.