High and low water pressure coating processing is a common surface coating treatment method, which is usually used to improve the performance of the surface of metal materials, such as corrosion resistance, wear resistance, heat resistance, hardness and so on. This method uses high pressure or low pressure spraying coating to form a coating on the surface of the material, which can effectively improve the performance of the material surface. The following will be a detailed introduction to the principle, application and advantages and disadvantages of high-low water pressure coating processing.
First, the principle of high-low water pressure coating processing
The basic principle of high-low water pressure coating processing is to use high pressure or low pressure gas to spray the paint onto the metal surface to form a uniform coating. High pressure coating is usually operated with a high pressure spray gun or high pressure coating machine, and its pressure is often more than 1500 psi. The low-pressure coating is usually operated with a nozzle or spray gun, and its pressure is generally below 50 psi.
In the process of coating processing, the coating is sprayed at high speed by the spray gun or coating machine to form a coating, which is evenly dispersed on the metal surface by the impact and extrusion of air or gas. After the coating is sprayed, it is cured to form a layer of uniform thickness coating, which improves the performance of the metal surface.
Second, the application of high and low water pressure coating processing
High and low water pressure coating processing is widely used in various substrate surface coating treatment, the coating has high corrosion resistance, wear resistance, heat resistance and other properties. The following are the application areas of the coating:
1. Construction works. High and low water pressure coating is widely used in the field of construction engineering, which is used to coat metal ventilation pipes, stairs, various steel structures and doors and Windows to enhance their fire resistance, corrosion resistance and durability.
2. Shipbuilding. Ships in the Marine environment are mainly affected by sea water, Marine climate, sea salt gas and other factors, processing suitable coatings can greatly improve the corrosion resistance and corrosion resistance of the hull.
3. Automobile manufacturing. High and low water pressure coating has been widely used in the field of automobile manufacturing, which can add a special layer of anti-rust coating to the automobile, improve the corrosion resistance, wear resistance and dust resistance of the automobile.
4. Chemical equipment. Steel chemical equipment has been used in acidic, alkaline, high temperature and high pressure for a long time, and high and low water pressure coating provides protective coating for chemical equipment, improving its corrosion resistance, wear resistance and high temperature resistance.
Third, the advantages and disadvantages of high and low water pressure coating processing
1. Advantages
(1) High and low water pressure coating processing coating thickness uniform, good effect.
(2) The composition of the coating is complex and can meet different requirements.
(3) The coating has good corrosion resistance and wear resistance and can be used for a long time.
2. Disadvantages
(1) High and low water pressure coating processing needs to be equipped with professional equipment, the cost is high.
(2) Because the coating spraying requires pressure, it is difficult to carry out detailed painting, which is not suitable for the surface treatment of high-precision parts.
(3) The coating will cause certain processing errors to the size and shape of the product.
Iv. Summary
High and low water pressure coating processing is a common surface coating treatment method, through high pressure or low pressure spray coating, the formation of a uniform coating, can significantly improve the performance of metal materials. Although high and low water pressure coating processing also has some shortcomings, but its advantages far outweigh the disadvantages, making it widely used in construction, vehicle and ship manufacturing, chemical equipment and other fields, become one of the important processes to protect the metal surface.
