What are the skills and issues that should be paid attention to in roller coating construction?

Roller coating construction: When rolling the paint, dip the paint in the paint bucket and then scrape the paint bucket. Take out the painted side upwards and use this side to roll the paint first. When rolling the paint, proceed from top to bottom, from left to right, first inside and then outside, first difficult to apply and then easy to apply. ； When painting, hold it fully and apply evenly, applying 2/3 of the force with one brush to ensure consistent thickness, no bottom exposure, no paint dripping, and no oil dripping. 2.1 During on-site construction, the coating construction method should be adjusted in time according to the different equipment structures. During the coating process, dry and wet film thickness gauges should be frequently used to detect the paint film thickness to ensure that the paint film thickness of each layer of paint meets the design requirements. 2.2 On cloudy and rainy days, when the wind level is greater than level 5 and the ambient humidity is greater than 80%, construction should be stopped to avoid defects in the coating amount or waste of paint. 2.3 When painting, wait until the upper paint film reaches the surface dryness before applying the next paint film. ； To prevent paint film wrinkles, orange peel and other quality defects. When a quality problem occurs, the cause should be identified first, and then repaired according to the type of quality problem. After the repair is completed and qualified, the next process can be carried out. 2.4 In order to ensure that the color of the paint film meets the design requirements, a trial coating should be carried out before applying the topcoat, and the overall painting should be carried out only after confirming that the color of the paint film meets the design standards. In order to make the overall color consistent without color difference, the topcoat should be purchased in a unified way, and the paint from the same manufacturer and the same production batch number should be used. 2.5 Do not use too much force when painting, and do not brush back too many times. When painting, the painting should be interlaced vertically and horizontally to increase the mutual adhesion of each layer of paint and make up for the shortcomings of each other. 2.6 The construction sequence should be from top to bottom, and the last coat of topcoat should be applied in the direction of light. Care should be taken during painting to ensure that the coating is applied uniformly without defects such as missing paint, bubbling, discoloration, or loss of gloss.

Roller coating construction means that after the roller brush is dipped in paint, the roller brush is rolled repeatedly to roughly distribute the paint on the surface of the equipment, and then the roller brush is rolled up and down densely to spread the paint on the surface of the equipment. Finally, use a roller brush to roll in a certain direction to flatten and modify the surface coating of the equipment. Use a paint brush to recoat areas at the corners of the equipment that are difficult to apply with a roller. When performing roller coating, first inject paint into the roller paint pan, then roll the roller brush in the pan to coat the paint, and roll repeatedly to make the paint-containing layer evenly adhere to the paint. When performing roller coating construction, when the brush roller presses against the surface of the equipment, the force should be light at the beginning, and then gradually increase the pressure so that the paint attached to the brush roller can be evenly transferred to the surface of the equipment. During the painting construction process, the brush roller should usually run in a W-shaped trajectory, with the rolling trajectories crisscrossing and overlapping each other to make the paint film thickness uniform. When performing fast-drying coatings or coatings with strong penetration into the surface of the object to be coated, the brush roller should run in a straight and parallel trajectory.