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Electrophoresis coating equipment

Electrophoretic coating: electrophoresis electrophoretic coating in Yin and Yang, applied voltage, ionic charge of the coatings to the cathode, and the cathode surface and alkaline generated by the formation of insoluble matter deposited on the surface of the workpiece.

It consists of four processes:

1, electrolysis (decomposition)

In the cathode reaction initially for electrolytic reaction, hydrogen and hydroxyl ions OH, the reaction caused by the cathode surface to form a highly alkaline boundary layer, and the effect of hydroxyl ion Dangyang become soluble in water. The film is deposited, the equation is: H2O, OH+H

2. Electrophoretic mobility (migration and migration) of cationic resins and H+ moves toward the cathode under the action of an electric field, while anions move toward the anode.

3, electrodeposition (precipitation)

On the surface of the coated workpiece, the cationic resin is neutralized by the alkaline action of the cathode surface, and no sediment is deposited on the coated workpiece.

4 、 electroosmosis (dehydration)

The coating on the surface of the workpiece and the solid film is translucent, with most of the pores, the water is leaking out from the cathode coating head, in the electric field, and the coating film caused by dehydration, adsorbed on the surface of the workpiece, and complete the whole process of electrophoresis.

Characteristics of electrophoretic surface treatment process:

Electrophoresis paint film has the advantages of full coating, even, smooth and smooth. The hardness, adhesion, corrosion resistance, impact resistance and permeability of electrophoretic film are better than other coating process.

Powder electrostatic spraying equipment

Powder coating has the advantages of good economy, no environmental pollution and high efficiency, and the coating thickness can reach more than 50 mu m at one time.

Powder electrostatic spraying equipment mainly consists of powder spraying room, high voltage electrostatic generator, electrostatic powder gun, powder feeder and powder recovery device.

Main classification and composition of drying equipment

There are various types of drying equipment: usually according to the production organization, the chamber body shape, the use of energy, heat, air in the classification of indoor recycling mode of the heating method is divided into: convection, radiation and convection drying + radiation drying;

According to the structure of the form is divided into: straight, bridge, half bridge, dead end type, double - type, font etc..

The main coating equipment is divided into pre coating surface pretreatment equipment, spraying equipment, coating drying and curing equipment, mechanized conveying equipment, dust-free, constant temperature and humidity air supply equipment, and other ancillary equipment.

The main contents of the process design include: surface coating quality requirements, pre treatment methods, spraying methods, process, coating properties, spraying environment, time, etc..

1. The purpose of painting:

Through coating construction, the coating can form a firm and continuous coating on the surface of the coating, so as to play its decorative, protective and special functions

2, the key to coating engineering is: coating process and equipment, coating materials, operating environment, and painting management.

The quality of the coating material is the basic condition for obtaining high quality coating. Coating process, equipment and painting environment are the necessary conditions for full application of coating materials, high quality coating, low production cost and economic benefits. Coating management is to ensure the implementation of the established process, to ensure the stability of coating quality, to achieve the purpose of painting and the best economic benefits of the important conditions.