Coating knowledge: a brief introduction to the four construction methods of marine coatings

China Paint Online News Information
Ship Paint Construction Method: Rolling Coating Method
This kind of paint construction method refers to painting with rollers covered with paint. Rollers can not be painted too much, paint does not spill over the two sides of the drum as the principle, paint when the rollers can not roll too fast, should make the rollers up and down slowly rolling, rough surface, welds to pay special attention to the corners of the application of paint brush to find. Roll coating method is more efficient, in a large area of painting, but fast-drying paint can not be used roll coating method.the construction method of marine paint: brush coating method
As the name implies, refers to the use of paint brush on the surface of the component staggered and cross-coated paint. Brush coating has a strong penetration force, can make the paint penetrate into fine holes and gaps, when the surface of the steel plate moisture, brush coating can squeeze moisture, so that the paint really adhere to the components, in addition, brush coating also saves paint. However, the brush coating method is inefficient and is only used when repainting in small areas, corners and individual places.Ship paint construction method: no air spray method
this high-tech coating construction method refers to the use of high pressure paint spray, paint at the nozzle exit is forced to atomize, sprayed to the surface of the coating to form a paint film. Compared with the spray method, the paint dispersion is less, the efficiency is high and the coating film can be applied thicker when using airless spray, so it is especially suitable for large-area construction. However, when using airless spraying, the technical requirements of artificial labor are higher, but also pay attention to fire prevention. At present, almost all shipyards use this method when painting large areas.: Spray method
spray method is to use pressure of 3-5Pa compressed air to atomize the coating, sprayed to the surface of the coating to form a paint film. When spraying, the nozzle should be perpendicular to the painted surface and should move up and down in parallel and not swing. When using spray method, pay special attention to the surface to maintain very clean and dry, otherwise the adhesion of the paint will be reduced, by compressed air caused by the paint dispersion and solvent volatility a lot, pay special attention to sparks. The spray method is highly efficient and suitable for large areas of paint, but some coating losses are caused by the dispersal of coatings.No matter what kind of coating construction method is used for the construction of the ship surface coating, we should pay attention to its construction quality and cost-saving factors, but at present, large shipyards in the surface coating construction will use airless spray method, which is not only high efficiency, but also not easy to cause the loss of paint.
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