Briefly analyze the brushing methods of several marine coatings: Rolling method refers to painting with a roller covered with paint. The roller should not be painted too much. The principle of the paint does not overflow the two sides of the roller. When the paint is applied, the roller cannot roll too fast. The roller should be slowly rolled up and down, left and right, and the rough surface and the weld should be specially noticed. Apply the paint brush at the corner. . The roll coating method has high efficiency and is used in large-area painting, but the quick-drying coating cannot be used in the roll coating method. Brush coating refers to the use of a paint brush on the surface of the component staggered longitudinally and horizontally painted. The brush has a strong penetrating power, which enables the coating to penetrate into the pores and gaps. When the surface of the steel sheet has moisture, the brush can discharge the water, so that the coating actually adheres to the member, and the brushing also saves coating. However, the brushing method is inefficient and can only be used in small areas, corners and individual places. The airless spraying method sprays the paint with high pressure, and the paint is forcibly atomized at the nozzle outlet to be sprayed onto the surface of the object to form a paint film. Compared with the spraying method, when the airless spraying is used, the coating has less scattering, high efficiency and a thick coating film, so it is particularly suitable for application in large-area construction. However, when using airless spraying, the technical requirements for labor are high, and fire protection is also required. Almost all shipyards currently use this method for large areas of painting. The spraying method is to atomize the coating with compressed air having a pressure of 3-5 Pa, and spray it onto the surface of the object to form a paint film. The nozzle should be perpendicular to the surface to be coated when spraying, and should be moved up and down in parallel and cannot be swung. When using the spraying method, pay special attention to the surface to be cleaned and dry. Otherwise, the adhesion of the paint will be reduced. The scattering of the paint caused by compressed air and the evaporation of the solvent are many. Pay special attention to the spark. The spraying method has high efficiency and is suitable for use in large-area painting, but the coating scattering causes some coating loss. Due to equipment limitations, this method is generally only used in shipyards. Concerned about surprises Tags: airless spray, marine coating, paint, paint film, roll coating Previous: Introduction to the application of arc spray technology Next: The use of thermal spray alloy powder Soap Basket,Soap Gift Basket,Soap Basket For Shower,Handmade Soap Heshan Zhongxin Sanitary Ware Ind., Co., Ltd , https://www.baolongfaucets.com
Brush coating method for several marine coatings