Coating process: general construction process of anticorrosive paint

Core tips: there are various kinds of anticorrosive paint, including epoxy anticorrosive paint, perchloroethylene anticorrosive paint, chlorinated rubber anticorrosive paint, polyurethane anticorrosive paint, acrylic anticorrosive paint, inorganic anticorrosive paint and high chlorinated polyethylene anticorrosive paint But the construction technology is universal 1 Substrate treatment The purpose of base material treatment is to remove burr, rust, oil stain and other attachments on the surface of components, so as to make the surface show metallic luster The more thorough the substrate treatment is, the better the coating adhesion effect will be The methods of substrate treatment include manual mechanical treatment, chemical treatment, mechanical spray treatment, etc Treatment method equipment and tools Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: there are various kinds of anticorrosive paint, including epoxy anticorrosive paint, perchloroethylene anticorrosive paint, chlorinated rubber anticorrosive paint, polyurethane anticorrosive paint, acrylic anticorrosive paint, inorganic anticorrosive paint and high chlorinated polyethylene anticorrosive paint But the construction technology is universal 1 The purpose of base material treatment is to remove burr, rust, oil stain and other attachments on the surface of components, so as to make the surface show metallic luster The more thorough the substrate treatment is, the better the coating adhesion effect will be The methods of substrate treatment include manual mechanical treatment, chemical treatment, mechanical spray treatment, etc The advantages and disadvantages of the equipment and tools are simple and convenient to handle gauze, wire brush, blade, plane grinder and power wire brush manually and mechanically Low cost, high labor intensity, poor quality and low efficiency can only meet the general coating requirements High efficiency, applicable to large components, high quality, low cost and environmental pollution of chemical treatment pickling tank and chemicals, etc., the waste liquid is not easy to be treated; strict process requirements and incomplete cleaning process will have a serious impact on the coating (mechanical spraying (shot blasting, shot peening) air handling machine, jet machine and oil-water separator High efficiency, can control the quality, get different requirements of the surface roughness equipment complex, maintenance man hours, high cost, one-time investment, and serious environmental pollution 2, the matching coating construction coating generally has primer layer and finish layer Primer contains more powder, less base material, rough film-forming, strong adhesion with steel and good adhesion with top coat The top coat has many base materials and glossy coating, which can protect the primer from atmospheric corrosion and resist weathering The compatibility of different coatings should be paid attention to when choosing different coatings There are three types of matching coating: primer - middle coat - top coat, primer - top coat and bottom one coat Among them, the primer mainly plays the role of adhesion and rust prevention; the top coat mainly plays the role of anti-corrosion and anti-aging; the role of the middle coat is between the bottom coat and the top coat, and it can increase the film thickness Only when they are used together can they play the best role and get the best effect A reasonable painting method plays an important role in ensuring painting quality, construction progress, saving materials and reducing costs The commonly used coating methods include hand brush coating, hand roll coating, dip coating, air spraying and airless spraying 3 Quality control of coating construction the first step of coating construction is rust removal High quality coating depends on thorough rust removal Generally, sand blasting and shot blasting are used to remove rust and oil stains The coating applied on site can be derusted by hand The construction temperature (5-38 ℃) and humidity (relative humidity ≤ 85%) of the coating shall be appropriate; the construction environment dust shall be less; there shall be no condensation on the surface of the component; it shall not rain within 4 hours after the coating Generally 4-5 coats The total thickness of the dry paint film of the outdoor works is 150 μ m, that of the indoor works is 125 μ m, and the allowable deviation is 25 μ m; the total thickness of the dry paint film is 200-220 μ m in the coastal, offshore or strongly corrosive atmosphere Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,