In today's increasingly popular electric vehicles, charging piles are a very important part of electric vehicle charging equipment, and the appearance quality and weather resistance of charging piles have become very important. When the charging pile shell is manufactured, surface treatment technologies such as baking paint and spraying are usually used to enhance the appearance quality and weather resistance. The article will elaborate on the process of baking paint and spraying the shell of the charging pile, the advantages and disadvantages and how to choose the appropriate surface treatment. First, the process of baking paint, as one of the common surface treatment technologies, can achieve rich colors and good effects. Its process flow is generally composed of the following links: 1. Surface treatment: First of all, the surface treatment of the charging pile shell is required to include the removal of oil, oxides and impurities to ensure that the paint is evenly adhered to. Common surface treatment methods include sandblasting, polishing, and chemical treatment. 2. Primer coating: The primer after surface treatment needs to be finished. Primers play a role in providing a smooth basis for coatings to improve adhesion, weather resistance and other properties. Primers generally need to be dried and cured to ensure the quality of the coating. 3. Coloring and coating: Coloring and painting after the primer is dried. Different colors and effects can be selected according to the requirements, such as glossy, matte, metallic. In the coating process, the thickness and uniformity of the coating are required to be controllable in order to achieve the ideal appearance. 4. Varnish coating: the final varnish coating. Varnish has the functions of protective coating, improving gloss, weather resistance, etc. After the varnish is painted, it needs to be dried and cured to ensure the stable quality of the coating.
Second, the spraying process is a kind of charging pile shell surface treatment process commonly used at present, the specific process flow is: 1. Surface treatment: similar to baking paint, the surface of the charging pile shell should be treated before spraying, in which the oil, oxides and impurities should be removed to make the coating evenly adhesed. 2. Spraying primer: spraying primer after surface treatment. Primers play a role in providing a smooth basis for coatings to improve adhesion, weather resistance and other properties. The primer needs to be dried and cured to ensure the quality of the coating. 3. Spraying powder: spraying powder after the primer is dried. The powder can be sprayed in different colors and effects, such as matte and metallic. When spraying powder, the thickness and uniformity of the coating need to be controllable in order to achieve the ideal appearance. 4. Curing: It needs to be cured after spraying powder. Curing is typically done by heating the powder coating to melt and level it to form a strong coating. Cured coating is weather-resistant and chemically resistant. 3. There are advantages and disadvantages of baking paint and spraying, and there are advantages and disadvantages of baking paint and spraying, and appropriate surface treatment methods need to be selected according to specific requirements. 1. Baking paint has the advantages of rich color, changeable effect, good gloss and smooth coating. However, there are shortcomings such as high requirements for the environment, the need to control temperature, humidity and ventilation, and the possibility of harmful gases may be produced during the baking of paint. 2. The weather resistance, chemical resistance and adhesion of the spraying technology are relatively good, but the color selection is relatively limited, the maintenance difficulty is relatively large, the solidification time is longer, and it is not suitable for shells with complex shapes. In the selection of the surface treatment method of the charging pile shell, it is necessary to consider the specific needs and constraints, and select the appropriate technology to enhance the appearance quality and weather resistance. "