"Paint-to-powder" - the application of powder coatings in automotive wheels

With the country's more and more strict control of VOC, the new paint coating line is not approved, water-like paint process still has many difficulties, so "paint-to-powder" is becoming more industry coating application consensus.
this issue we talk about the hub coating process in the auto parts industry. It is not difficult to find that more and more hub enterprises are also changing from paint to "powder coating"
china
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complete process for spraying the hub powder can be divided into the following main links:How to replace liquid paint with powder seeding traditional primer change from traditional 4 paint to 3 paint, remove primer, use the base powder, become a new direction of development. The use of this process, powder coating zero VOC characteristics of the entire coating process of VOC emissions reduced by about 20%, coating process reduced, efficiency increased, the yield of good products increased.instead of metallic paint part of the metallic color, from 3 to 2. Metallic paint is replaced by metal powder paint. Metallic paint usually contains a large amount of solvents and is the main source of VOC. After the powder process converted to zero VOC, VOC emissions decreased by nearly 50% in the coating process, and the coating efficiency increased and the cost decreased.in some special metal colors, due to the different coating manufacturing process, metal powder coatings show better inter-layer adhesion and compatibility than water-based paint, more advantages.with the rapid development of powder technology, more environmentally friendly special metal effects have been realized. For example, the emergence of imitation chromium powder coatings can be used in car wheels instead of environmentally friendly polishing processes.liquid varnish powder varnish has been matured for more than 30 years on polishing wheels and fine wheels.than water-based varnish, powder varnish technology is much more mature, in the alternative oily varnish, there are obvious advantages.in industrial production, because the coating rate of powder varnish is higher than that of liquid varnish, it does not lead to a significant increase in the overall cost, while the reduction of VOC emissions is significant.alternative oily media paintin the vacuum plating process, usually using the "base powder and oily primer, oily media paint, electroplating layer, varnish" process. Powder media paint has replaced "oily primer and oily media paint", more and more become the mainstream of the process. The high satiety, high yield and zero VOC of powders have revolutioned the industry. And in this area, there is no water-like liquid paint as an alternative product.。 Powder-coated wheels perform better: 1, better concealability the surface of aluminum alloy wheels, mostly rough casting surfaces. The powder, which is solvent-free and exhibits good "filling between the blanks", is applied to the first coating with the hub to mask surface defects.2, better resistance to stonebecause of the lack of solvents, powder coating is not easy to hang, it is easy to achieve "single-layer high-film thickness", compared to the complex multi-coated liquid paint process, single-layer powder primer, showing better resistance to stone strike performance.3, excellent surface performance powder varnish, paint film gloss and fullness, corrosion resistance, etc. are better than liquid varnish.
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