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What is spraying pretreatment? What is the role of spraying pretreatment?



Pre-treatment cleaning line

Firstly, let me explain to you the definition of spraying pretreatment. Spraying pretreatment refers to the cleaning, dedusting, polishing, and degreasing of the surface of a workpiece before painting. The main function of spraying pretreatment is to improve the adhesion and durability of spraying materials, and prevent coating peeling.


Spraying pretreatment mainly includes the cleaning of the workpiece surface, including physical cleaning and chemical cleaning. Physical cleaning is the process of removing impurities, dust, and oil from the surface through friction or high-pressure water guns. Chemical cleaning is the use of acids, alkalis, solvents, or other chemical reactions to treat surface impurities. Through this process, dirt and oxide layers on the surface of the workpiece can be effectively removed, ensuring a good surface condition and preparing for spraying.


Spraying pretreatment can improve the adhesion and durability of coatings. This is because if the surface is not thoroughly cleaned and treated before spraying, it is easy to cause problems such as peeling, peeling, or foaming of the coating, which can affect the quality and effectiveness of the product.


Different spraying pretreatment processes need to be selected for different materials of workpieces. For example, for metal materials, mechanical or chemical treatment methods can be used; For materials such as plastic and rubber, chemical treatment and pressure spraying can be used. Therefore, when conducting spraying pretreatment, it is necessary to choose an appropriate pre-treatment method to achieve the desired effect.


Through the introduction of spraying pretreatment by the Attractivechina editor, I believe everyone has already understood that spray coating pretreatment is a very important work. It can not only improve the adhesion and durability of coatings, but also ensure the quality and service life of coatings. Therefore, it is necessary to take the pre-treatment work before spraying seriously during the coating process, develop a reasonable process plan, and ensure that the effect of spraying pretreatment reaches the best.