Regarding the construction conditions of Universal Pipe Coating, there are several requirements, each of which is explained in detail:
Surface treatment requirements
1. Thorough cleaning and rust removal
The surface of the pipe must be thoroughly cleaned and rust-free before construction to ensure that the coating can adhere firmly to the pipe. The rust removal level should be at least St2, that is, there should be no visible grease, dirt, scale, rust and paint coating on the surface of the equipment and pipe, and the residue should be firmly attached. For the method of rust removal by spraying or projectile, it should also be ensured that there is no visible grease and dirt on the surface, and there is no loosely attached scale, rust and paint coating.
2. Drying and cleaning
The surface of the cleaned pipe should be kept dry and free of grease, dust and other contaminants. This is because it is difficult for the coating to form a uniform coating on a wet or contaminated surface, and the adhesion will be greatly reduced.
Environmental conditions requirements
1. Suitable construction temperature
The construction environment temperature has an important influence on the drying and curing of the coating. Generally speaking, the construction environment temperature of Universal Pipe Coating should be controlled between 15 and 30℃. Within this temperature range, the coating can dry and cure normally to form a uniform coating. If the temperature is too high or too low, it will affect the performance and quality of the coating.
2. Relative humidity control
In addition to temperature, relative humidity is also an important factor affecting coating construction. The relative humidity of the construction environment should not exceed 85%. When constructing in an environment with excessive humidity, the coating is easy to absorb moisture in the air, causing problems such as blistering and shedding of the coating.
3. Good ventilation and lighting
The construction site should have good ventilation and lighting conditions. Ventilation can ensure that harmful gases in the construction environment are discharged in time to reduce harm to human health. Lighting helps construction personnel accurately judge the state of the coating and the quality of construction.
Coating and tool requirements
1. Qualified coating quality
The coating used should meet the relevant standards and design requirements, and have a certificate of conformity and a test report. Expired or obviously deteriorated coatings must not be used to avoid affecting the quality and performance of the coating.
2. Construction tools and equipment
Before construction, the required construction tools and equipment, such as brushes, spray guns, rollers, mixers, etc., should be prepared. These tools and equipment should be kept clean, dry, and meet the construction requirements. At the same time, the construction machinery and equipment should be reasonably selected and inspected to ensure that they are in good working condition.
Construction operation requirements
1. Strictly follow the operating procedures
Construction personnel should strictly follow the operating procedures provided by the paint manufacturer to ensure that each step of the operation meets the specifications and requirements. At the same time, safety protection should also be done well, such as wearing personal protective equipment such as protective glasses and masks.
2. Uniform coating and reasonable thickness
During the coating process, it should be ensured that the coating is uniform, without bubbling, sagging, etc. The thickness of the coating should meet the regulations and design requirements of the paint manufacturer and shall not be less than the specified dry film thickness. At the same time, attention should also be paid to controlling the coating speed and strength to ensure the consistency of the coating quality.
3. Carry out subsequent processes in a timely manner
After the primer is applied, the intermediate process and topcoat should be applied within the specified time. Avoid primer aging or paint peeling. At the same time, attention should be paid to controlling the interval time between each process to ensure that the coating can be fully dried and cured.
In summary, the construction conditions of Universal Pipe Coating involve many aspects such as surface treatment, environmental conditions, coatings and tools, and construction operations. Only by strictly following these requirements can the quality and performance of the coating meet the design requirements.
