１.the types of steel structure coatings

Special coatings for steel structures can be divided into two types: organic coatings and inorganic coatings.

Organic coatings refer to coatings that use organic matter as the main component, such as resins, solvents, additives, etc., and are applied by coating, spraying, brushing, etc. Organic coatings have the advantages of rich colors and convenient construction, and are widely used in steel structures, ships and other fields.

Inorganic coatings refer to coatings that use inorganic substances as the main components, such as silicate, graphite, calcium carbonate, etc., and are applied by dry mixing, spraying, etc. Inorganic coatings have the advantages of excellent anti-corrosion performance and high durability, and are widely used in steel structures, subways, bridges and other fields.

２.the function of steel structure coatings

１. Anti-corrosion properties

Steel structures are prone to corrosion in the external environment, so the selected coating must have good corrosion resistance. Organic coatings generally use fluorocarbon coatings or polyurethane coatings; Inorganic coatings generally use silicate coatings or zinc-titanium coatings.

2. Durability

It has durable performance and can resist the effects of external environments such as oxidation, ultraviolet radiation, acids and alkalis

3. Convenient construction

It has good coating fluidity, can dry quickly, and shorten the construction period. At the same time, the coating has good compatibility and can be well combined with the substrate and primer to form a synergistic protection mechanism.

３.Precautions for the use of steel structure coatings

　　1. Requirements for the construction environment of the coating

　　Before construction, the construction environment needs to be inspected to ensure that the construction environment is at a suitable temperature and humidity. At the construction site, it is necessary to ensure that the air circulation is smooth and not smoky.

2. The construction method of the paint

　　Before construction, it is necessary to carefully read the construction instructions of the coating to understand the construction requirements of the coating. According to the different characteristics of the coating, different construction methods such as spraying, brushing, and roller coating are used to ensure the quality of construction.

3. Control the amount of paint coated

　　In the construction process, it is necessary to pay attention to the control of the coating amount, not too much or too little. Excessive coating leads to coating waste, and insufficient coating leads to insufficient coating thickness and reduced corrosion protection.

4. Maintenance after paint application

　　After the coating is applied, it is necessary to carry out regular inspection and maintenance, find the problems in the coating in time, and take targeted maintenance measures. Proper maintenance can extend the service life of the coating and improve the corrosion resistance of the coating.