1. Powder electrostatic spraying process:
The working principle of electrostatic powder coating is almost identical to that of electrostatic spraying of liquid coatings. The difference lies in the fact that powder coating is dispersed rather than atomized. It relies on the coating sprayed from an electrostatic powder spray gun to disperse the powder particles, which then become negatively charged. These charged powder particles are then adhered to the grounded aluminum casing of a power lithium-ion battery by the airflow and electrostatic attraction, and subsequently heated to melt and solidify into a film.
2. Electrophoretic coating process:
Electrophoretic coating is a coating method that uses an external electric field to cause pigments and resin particles suspended in an electrophoretic solution to migrate directionally and deposit on the surface of a substrate, one of the electrodes. It features water solubility, non-toxicity, and ease of automation control. After electrophoretic coating, the aluminum casing of a power lithium-ion battery has a smooth gloss and can resist the erosion of cement, mortar, and acid rain.
3. Electrochemical surface ceramization process:
The aluminum casing of the power lithium-ion battery pack uses a plasma-enhanced electrochemical surface ceramicization process, which, while producing excellent quality, is also costly. This process produces profiles available in over 20 shades, its most notable feature being the ability to overlay colors, similar to printing on fabric, resulting in a vibrant and aesthetically pleasing surface.
4. Frosted finish:
Frosted aluminum profiles avoid the drawbacks of bright aluminum alloy profiles, which can cause light interference under certain environmental conditions in architectural decoration. Their surface is as delicate and soft as brocade, making them very popular in the market. However, existing frosted materials still need to overcome the shortcomings of uneven surface sand particles and visible mold patterns.
