Powder Coating – Aluminum Finishing

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About Powder Coating

Powder coating is applied as a free-flowing, dry powder unlike conventional liquid paint. It is normally applied electrostatically after which it is dried or cured under heat or with ultraviolet light. It has become more and more popular since its introduction to North America in the 60s. The reasons for this are the high-quality, durable finish it provides. As well as being more environmentally friendly than wet paint.

Things that are powder coated generally have a much more uniform appearance than liquid painted items.

Powder Coating uses the RAL Color Chart. These are different than wet paint.

How We Powder Coat

Powder coatings are based on polymer resin systems, combined with curatives, pigments, leveling agents, flow modifiers, and other additives. These ingredients are melted, mixed, cooled, and ground into a uniform powder. A process called electrostatic spray deposition (ESD) is typically used to achieve the application of the powder coating to a metal substrate. This application method uses a spray gun, which applies an electrostatic charge to the powder particles, which are then attracted to the grounded part. After application of the powder coating, the parts enter a curing oven where, with the addition of heat, the coating chemically reacts to produce long molecular chains, resulting in high cross-link density. These molecular chains are very resistant to breakdown. This type of application how we apply powder at Barfield Fence and Fabrication.

Powder coated products are more resistant to diminished coating quality because of impact, moisture, chemicals, ultraviolet light, and other extreme weather conditions. In turn, this reduces the risk of scratches, chipping, abrasions, corrosion, fading, and other wear issues.
It’s tough. It looks great. And it lasts a long, long time. In addition to being durable, powder coating is an attractive choice due to environmental advantages.

 

 

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