What are the characteristics of powder coating equipment?

What are the characteristics of powder coating equipment? Let's take a brief look below:

Due to the absence of organic solvents and water in powder coatings, which are in the form of solid powder, this characteristic determines that their construction methods are clearly different from traditional solvent based coatings and water-soluble coatings. The spraying process can be divided into two types: hot spraying and cold spraying. Thermal spraying is a method of heating from the beginning to the end, where the powder coating melts and then is applied to the workpiece, resulting in leveling and coating. Cold spraying, on the other hand, is a method of applying powder onto a workpiece at room temperature using various methods, and then using heating or radiation curing to cause the coating to melt, level, and form an excellent coating film. The powder electrostatic spraying method belongs to spraying, which can be divided into high-voltage electrostatic spraying and conflict electrostatic spraying according to the principle. The equipment also follows these two methods to distinguish.

Powder coating equipment uses a coating machine equipped with an atomizing nozzle (to atomize the coating) and a discharge electrode (to generate an electric current) to atomize the coating, and apply an electric charge to the particles, thereby creating an electric field between the electrode and the object to be coated, and using its electrostatic adsorption effect for coating.

Main features of powder coating equipment:

1. Manual, automatic, or a combination of manual and automatic painting equipment can be selected.

2. Recyclable free powder with a recycling rate of over 98%.

3. Suspended transportation system with high level of automation.

4. The coating has small micropores, good anti-corrosion function, and can be used for thick film coating equipment in one go.

Conflict electrostatic spraying does not require the use of a high-voltage electrostatic generator for spraying, nor does it require the establishment of a high-voltage electrostatic factory between the powder spray gun and the workpiece. Guangzhou WLD equipment co.ltd is a professional suppliers and manufacturer of powder coating booths and lines in Guangzhou,China. The important thing is that its powder spray gun is made of strong electronegative materials. When the names of two materials with different electronegative values conflict, weak electronegative materials will carry a positive charge, while strong electronegative materials will carry a negative charge. When using powder coatings with weak electric negative film-forming materials, collisions between powder coating particles and conflicts between powder and gun bodies made from strong electric negative materials can cause the powder particles to carry positive charges. So when selecting suitable raw materials to manufacture a spray gun, the powder collides and carries a positive charge when it moves in the gun body under the push of contracting air. With the continuous push of the air flow, it will fly towards the grounded workpiece and be adsorbed onto it. After the loose coating layer solidifies from beginning to end, it will result in an average continuous and smooth coating.