Plastic spraying is a surface treatment method in which plastic powder is sprayed onto the workpiece. This is what we often called electrostatic powder spraying. Compared with ordinary spray paint surface treatment, this technology has the advantages of advanced technology, energy savings, high efficiency, safety and reliability, and bright colors. Its working principle is to charge plastic powder through high-voltage electrostatic equipment and spray the paint onto the surface of the workpiece under the action of the electric field. The powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating, and the powdery coating will be leveled and solidified after high-temperature baking. The plastic particles will melt into a dense final protective coating with different effects, firmly attached to the surface of the workpiece.Plastic spray products are mostly used for indoor cabinets, and the paint film presents a flat or matte effect. Plastic spray powder mainly includes acrylic powder, polyester powder, etc.
Advantages of spraying:
No thinner is needed; the operation is environmentally friendly and non-toxic to the human body; the coating has excellent appearance quality, strong adhesion, and mechanical strength; The curing time of the spraying operation is short; the coating has much higher corrosion resistance and wear resistance; no primer is required; the operation is simple and the cost is lower than the painting process; and the electrostatic powder spraying process will not cause the common flow phenomenon in the painting process, which increases the service life of the product and makes the product more beautiful.
The principle of spraying:
It uses the corona discharge phenomenon to make the powder coating adsorb onto the workpiece. The process is as follows: the powder coating is fed into the spray gun by the powder supply system with compressed air. The high voltage generated by the high-voltage electrostatic generator is added to the front end of the spray gun. Due to corona discharge, dense charges are generated near it. When the powder is sprayed from the nozzle, charged coating particles are formed. It is attracted to the workpiece with the opposite polarity due to the electrostatic force. As the amount of powder sprayed increases, the charge accumulates more. When it reaches a certain thickness, it will not continue to adsorb due to the c, so that the entire workpiece obtains a certain thickness of powder coating, and then the powder is heated to melt, level, and solidify; that is, a hard coating is formed on the surface of the workpiece.
Hebei Zhuxin Electric Power Equipment Manufacturing Co., Ltd. has many processes such as spraying, stamping, hot forging, welding, laser cutting, bending, hot-dip galvanizing, Dacromet, etc., which enables us to meet the customized processing needs of customers in addition to power products. Friends who are in need or interested are welcome to visit our company. We look forward to your letter.