Affect the powder consumption in the spraying of aluminum profiles
Jul 23, 2021
The electrostatic powder coating method uses the induction effect of a high-voltage electric field to cause the powder coating and the coated object to be induced to carry opposite charges to each other, thereby adsorbing the charged powder coating to the oppositely charged object, and then the powder A coating method in which the coating is melted, leveled, baked and solidified to obtain a coating film. Aluminum alloy extruded profiles without surface treatment have a single appearance and are easy to corrode in a humid atmosphere. Therefore, aluminum profiles generally need to be surface treated, and powder spraying is a major trend in the development of aluminum profiles at this stage. Because powder coating has the following advantages: ①Rich surface color and soft texture; ②Good corrosion resistance and not easy to be contaminated; ③Good weather resistance, shelf life of more than 10 years; ④Powder coating is strong and durable, and easy to produce. Powder coatings have developed rapidly since they were applied to aluminum profiles. Especially in the economically developed Yangtze River Delta and Pearl River Delta regions, the market share of powder-coated aluminum profiles has exceeded 60%.
With the implementation of the national energy-saving and emission-reduction policy and the increasing awareness of cost control by aluminum profile companies, reducing powder consumption in aluminum profile spraying is an important direction for energy saving, emission reduction and cost reduction.
There are many factors that affect the powder consumption in the spraying of aluminum profiles, and there are two major aspects. On the one hand, it is related to the properties of the powder coating itself, and on the other hand, it is closely related to the spraying process of the powder, such as the spraying process conditions, the distance between the workpieces, the state of use of the equipment, and the level of operation of the employees.