Chimney brushing beacon measures
Now the new chimneys are getting taller and taller. In order to solve the problem of ground air pollution, the height of many new chimneys has begun to be higher than that of many buildings, so in this case, the color of the beacon becomes very important. If there is no beacon color, then the aircraft is likely to hit the chimney when flying at a low altitude, causing a very serious accident. So how to brush the navigation mark color? We together look.
First of all, the selection of navigation mark colors is still very critical. Be sure to pay attention to choosing a good variety of paint before painting. Because if you choose a bad paint, the color will fade after a few years, and the necessary protection measures will not be achieved at all, and in most cases, the chimney user will not repair the chimney because the color of the navigation mark will fade. In order to avoid potential safety hazards, be sure to choose a good navigation color pigment.
Secondly, the construction conditions are also very critical, and the necessary construction must be carried out in strict accordance with the construction process, otherwise various problems will easily occur.
It is relatively important to paint the chimney with the navigation mark. Before the construction of the chimney, it is necessary to understand the process and the performance of various materials, and operate strictly according to the construction process. According to the requirements of a certain corrosive environment, even if a good coating variety is selected, due to the damage caused by low construction technology and quality, a good protective coating cannot be obtained. In the construction of the navigation mark, the process control method should be adopted, and the quality of each process should be controlled by technicians or on-site quality inspectors, and records should be made. . The specific preparation work also includes the following points:
1. Before painting the chimney brush color ring, check whether the variety, model and specification of all coatings meet the requirements of construction technical conditions. Unqualified or deteriorated coatings cannot be used.
2. Before the chimney brushing navigation mark painting, the basic composition and performance of the paint and the construction method should be understood, and the appropriate painting process should be selected and determined according to the respective construction requirements of the paint.
3. Due to the different densities of various components in the coating, after a certain period of storage, the coating will have different degrees of precipitation. Therefore, the paint must be stirred until completely homogeneous before painting. If crusts or particles are found, use an 80-120 mesh screen to filter. If the skinning or particle phenomenon is severe, the coating is basically unusable.
4. Generally, the coating has been adjusted to a suitable construction viscosity when it leaves the factory, and it is not necessary to carry out dilution treatment. However, under the condition that the temperature is too high or too low, an appropriate amount of thinner can also be added to achieve the desired coating viscosity. However, the amount of thinner generally should not exceed 5% of the weight of the paint itself, and the matching thinner should be selected according to the product requirements.
5. Before painting, the concrete surface and steel member surface should meet the design requirements and the current relevant national standards. The treated concrete surface and steel member surface should not have dust, cracking, peeling, shelling, orange peel, oily sewage and glitches etc.
6. The number of times of coating and the thickness of the coating shall meet the requirements of Party A, and the total thickness shall not be less than 120 microns.
7. After the basic treatment is completed, the paint should be applied as soon as possible. When applying the paint each time, it should be done after the previous paint is dried. Do not arbitrarily add driers to the paint during the final coat.
8. It takes at least 4-8 hours after the first coating to reach the surface dry, and the second coating should not be applied before the surface is dry.
9. After painting, it is strictly forbidden to rain for 4 hours. If it rains during painting, the steel structure should be enclosed to prevent dust and moisture from sticking to the coating and affecting the adhesion of the coating.
10. The temperature of the coating operation should be between 5-38 °C. When the air humidity is greater than 85%, or there is condensation on the surface of the component, the coating operation is not suitable.
