How to choose the construction process of fireproof coating

China Coatings Online News Information: Fireproof coating is the use of different construction methods, tools and equipment to apply the paint evenly on the surface of the protected material. The quality of the coating directly affects the quality of the coating film. For different protected objects and different fire-resistant coatings should use appropriate coating methods and equipment, to obtain the best coating quality. Therefore, according to the different substrates to choose different coatings and construction processes, in order to get the best results.
brush coating method: brush coating method is suitable for painting objects of any shape, the vast majority of fire-resistant coatings can be used in this method of construction. Brush coating is easy to penetrate into the fine holes in the metal surface, thus strengthening the adhesion of the metal surface. The disadvantage is low productivity, strong labor, and sometimes the coating surface has brush marks, affecting the decorative nature of the coating.
scraping method: the use of metal or non-metallic scrapers, such as hard film, fiberglass scrapers, horn scrapers, etc. with manual scraping, used to scrape a variety of thick slurry type fire paint and putty.
roller coating method: roller is a small diameter hollow cylinder, the surface sticky useful synthetic fiber made of long fluff, cylindrical ends are equipped with 2 washers, center with holes, curved handle is passed through this hole, when used, the roller is first immersed in the paint, and then applied to the desired surface with force rollers. Now the development of useful air compressor transport coating roller coating device.
spray method: the use of compressed air and spray gun to atomize the paint construction method, it is characterized by uniform coating quality after spraying, high production efficiency. The disadvantage is that part of the coating is lost, and due to the large amount of evaporation of solvents, affecting the health of the operator. The key device for air spraying is the spray gun. The spray gun is usually divided into three kinds according to the supply mode of paint, which are gravity type, attraction type and pressure feed type, and two kinds which are small and large according to spraying ability.
high viscosity of the coating, the need for air pressure, nozzle should choose a large diameter; Paint viscosity is low, the need for small pressure, nozzle can choose small caliber. Air spray air pressure is generally 0.3 to 0.6mpa.