Electrophoretic painting line

The electrophoretic painting line is an automated production line that uses the electrophoretic principle to apply surface coating to workpieces. It is widely used in industries such as automotive parts, hardware products, and home appliance shells. Through this production line, a uniform and dense paint film can be formed on the surface of the workpiece, effectively enhancing the anti-corrosion, decorative and durable properties of the workpiece.

I. Core Equipment Composition

The electrophoretic painting line mainly consists of an electrophoretic tank, a power supply system, an ultrafiltration system, a post-treatment system and an automatic control system. The electrophoresis tank is the core area for coating operations, used for holding electrophoretic coatings and soaking workpieces. The power supply system provides a stable direct current electric field for the electrophoresis process, driving the coating particles to move directionally to the surface of the workpiece under the action of the electric field. The ultrafiltration system can separate impurities and moisture in the coating, maintain the stability of the coating performance, and achieve the recycling of the coating. The post-treatment system includes equipment such as water washing, passivation and drying, which are used to clean and cure the workpieces after electrophoresis. The automated control system monitors the parameters of each link in real time to ensure the stable and efficient operation of the entire coating process.

Ii. Standardize work processes

The workpiece first enters the pretreatment system, where it undergoes processes such as degreasing, pickling, and phosphating to thoroughly remove surface oil stains, rust, and impurities, creating a surface condition conducive to coating adhesion. The processed workpieces are sent into the electrophoresis tank by the suspended conveyor chain or other conveying equipment. Under the action of the direct current electric field, the charged paint particles move towards the surface of the workpieces and deposit, forming a wet paint film. Subsequently, the workpiece undergoes multiple stages of water washing in sequence to remove residual coatings and impurities on the surface, and then enters the passivation tank for chemical treatment to enhance the adhesion between the paint film and the workpiece. Finally, the workpieces are sent into the drying room, where the paint film solidifies and takes shape in a high-temperature environment. After cooling and quality inspection, qualified products can proceed to the next process.

Iii. Highlight technological advantages

Uniform and dense coating: Under the action of an electric field, coating particles can be evenly deposited on the surface of the workpiece. Even for workpieces with complex shapes and many gaps, it can achieve seamless coating without dead corners, effectively avoiding problems such as sagging and missed coating.

High paint utilization rate: The ultrafiltration system enables the recycling of paint, reducing paint waste. Compared with traditional spraying methods, the paint utilization rate can be significantly improved.

Good environmental performance: The electrophoretic painting process is carried out in a closed environment, reducing the evaporation of organic solvents and wastewater discharge, meeting environmental protection requirements and lowering pollution to the environment.

High production efficiency: The electrophoretic painting line can achieve continuous and automated production, significantly reducing painting time and increasing the amount of workpieces processed per unit time, meeting the demands of large-scale production.

The electrophoretic coating line, with its advanced technology and stable performance, has become an important equipment in modern manufacturing for improving the surface quality of products and production efficiency, promoting the development of surface coating processes towards high efficiency and environmental protection.