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The purpose and content of automotive pre-treatment

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The purpose and content of automotive pre-treatment

  • Categories:News Center
  • Author:Chuangzhi Coating
  • Origin:Attractivechina
  • Time of issue:2019-11-29
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(Summary description)Painting is an important link in the surface manufacturing process of products, and it is an important way to obtain the decorative, weather resistance, corrosion resistance, durability and certain special functions of industrial products. It is widely used in automobiles, construction machinery and ships. In the big industry. For the automotive industry, pre-treatment is an important process section of a coating production line. It is a basic process that provides a clean coating substrate and ensures the adhesion of the coating film. It plays a decisive role in the performance of the coating film. Next, I will introduce the purpose and content of pre-treatment of automobile.

The purpose and content of automotive pre-treatment

(Summary description)Painting is an important link in the surface manufacturing process of products, and it is an important way to obtain the decorative, weather resistance, corrosion resistance, durability and certain special functions of industrial products. It is widely used in automobiles, construction machinery and ships. In the big industry. For the automotive industry, pre-treatment is an important process section of a coating production line. It is a basic process that provides a clean coating substrate and ensures the adhesion of the coating film. It plays a decisive role in the performance of the coating film. Next, I will introduce the purpose and content of pre-treatment of automobile.

  • Categories:News Center
  • Author:Chuangzhi Coating
  • Origin:Attractivechina
  • Time of issue:2019-11-29
  • Views:
Information

Painting is an important link in the surface manufacturing process of products, and it is an important way to obtain the decorative, weather resistance, corrosion resistance, durability and certain special functions of industrial products. It is widely used in automobiles, construction machinery and ships. In the big industry. For the automotive industry, pre-treatment is an important process section of a coating production line. It is a basic process that provides a clean coating substrate and ensures the adhesion of the coating film. It plays a decisive role in the performance of the coating film. Next, I will introduce the purpose and content of pre-treatment of automobile.

The purpose of automotive pre-treatment

1. Purpose of pre-painting

The pre-painting treatment is mainly to remove all dirt on the surface of the coated object (such as turbidity, rust, scale, dust, molding sand, welding slag, salt and alkali spots, etc.). By using a chemical method to generate a layer of non-metallic conversion film that is beneficial to improving the corrosion resistance of the coating, it is ensured that the coating has good corrosion resistance and decorative performance.
2. The main contents of pre-painting
(1) Pre-cleaning

Generally speaking, before entering the pre-treatment of any material workpiece, it should be pre-cleaned to remove excessive dirt that cannot be removed by cleaning. Pre-cleaning can greatly reduce the pollution of the subsequent pre-treatment and reduce the burden of each process tank of the pre-treatment. Pre-cleaning is generally performed manually.
(2) skim

Degreasing is the removal of oil from the surface of the workpiece. Various oil stains on the workpiece not only hinder the formation of the phosphating film, but also affect the adhesion, drying performance, decorative performance and corrosion resistance of the coating. Degreasing, degreasing and phosphating are very important to the performance of the entire coating.
(3) Surface adjustment

The use of surface modifiers to adjust the metal surface can eliminate the unevenness of the surface state caused by processes such as lye degreasing or pickling and rust removal, so that the metal surface forms a large number of extremely fine crystal centers, thereby accelerating the phosphating reaction , Facilitates the formation of phosphating film. For high-quality automotive painting, surface adjustment before phosphating has become an indispensable process.
(4) Phosphating

The so-called phosphating treatment refers to a surface chemical treatment method in which a metal surface is brought into contact with an acidic solution containing a dihydrogen phosphate and a chemical reaction occurs to form a stable insoluble inorganic compound film layer on the metal surface. The resulting film is called phosphorus Chemical film. Phosphated film has a microporous structure, is relatively stable under normal atmospheric conditions, and has a certain rust resistance. Used as the bottom layer of a paint film, it can significantly improve the adhesion and corrosion resistance of the coating. As the bottom layer of electrophoretic paint, phosphating film has been used almost 100% in the automotive industry.
(5) Washed

In the pre-treatment process of coating, the main purpose of water washing is: one is to wash the residual drugs from the previous process to avoid bringing them to the next process; the other is to prevent the workpieces from drying during the process and causing poor quality. Wash at room temperature.

The above is the related content of "the purpose and content of pre-treatment of automobile painting". The information is provided by Guangdong Chuangzhi, a 25-year painting production line manufacturer. For more information about the painting production line, please follow us for updates!

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Guangdong Chuangzhi Intelligent Equipment Co., Ltd. has a registered capital of 30 million and a self-funded site area of ​​approximately 36000 square meters. It is a high-tech enterprise integrating pre-sales whole plant planning, independent research and development, design, manufacturing, installation, commissioning and after-sales service. (GR20184404259), which owns Guangdong Chuangzhi Machinery Equipment Co., Ltd., Guangdong Ruizhaofeng Software Information Technology Co., Ltd., and Hong Kong Chuangzhi Mechanical Equipment Engineering Co., Ltd., and has obtained more than 130 patents in the field of coating equipment and environmental protection equipment. Based on the Industry 4.0 intelligent manufacturing cloud service and the industrial Internet platform, combined with the three major digital factory management systems of MES, ERP, and PDM, it realizes the remote management, quality control and production traceability tracking of the coating production line manufacturing process, and provides customers with high-quality, efficient, intelligent, Environmentally friendly services, so that customers have no worries when using Chuangzhi products. With 26 years of experience in 3D digital overall solutions for coating production lines, we provide customers with all kinds of non-standard automated coating production lines, coating equipment, environmental protection equipment and other whole plant solutions. At present, it has been widely recognized in the automotive industry, furniture industry, musical instrument industry, cookware industry, home appliance industry, industrial equipment industry and rail transit industry. 

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