The secret to anti-corrosion of aluminum profiles: The fluorocarbon paint coating process is fully revealed to double the life of the building.

2026-01-03 13:45:02

How to improve the utilization rate of fluorocarbon topcoat? Tips to shareAs a manufacturer, we often see users wasting topcoat due to improper matching. Remember these points:

Substrate preparation is key: no matter which option you choose, make sure the steel surface is clean and rust-free; otherwise, even the best paint will be in vain.

The matching must be scientific: the primer and intermediate paint cannot be omitted - they are like the "foundation", and the topcoat is the "decoration", both of which are indispensable.

Control the construction environment: Avoid painting in rainy days or high temperatures, otherwise the adhesion will be affected.

The coating of Fluorocarbon Paint is not a mystery, but a science. Choosing the right solution can reduce the amount of topcoat by 10%-20% and extend the service life.

Anti-fading and anti-blooming: the color is long-lasting and bright, and will not turn yellow or white easily.

Corrosion-resistant and wear-resistant: It can resist harsh environments such as acid rain and salt spray, and the surface is not easily scratched.

Anti-aging and anti-UV: It is not easy to crack or chalk after long-term outdoor use.Adapt to bad weather: Whether it is high temperature exposure or severe cold, it can be as stable as a mountain.

These characteristics make fluorocarbon paint the first choice for surface treatment of aluminum profiles, but to achieve maximum effect, scientific coating technology is required. Next, let’s talk about the process in detail.

Fluorocarbon paint coating process: step-by-step explanationFluorocarbon paint spraying is not simply a layer of paint, but a multi-step, delicate process. The common two-coat, three-coat and four-coat processes are applied layer by layer to ensure a firm coating. The whole process is divided into three steps: pre-treatment, spraying and curing. Our manufacturer's many years of experience summed up: strictly control the process, and the quality will be reliable!

1. Pre-treatment process: "give the aluminum a bath"Pre-treatment is the foundation, just like washing your face before applying makeup. If there is oil or impurities on the surface of the aluminum material, the coating will easily fall off. Steps include:

Degreasing and decontamination: Use special cleaning agents to remove surface oil stains and dust.Washing: Rinse clean to avoid residue.Alkaline washing (degreasing): further removes stubborn dirt.Pickling: slightly corrodes the surface and increases coating adhesion.Chromating: Forming a protective film with better anti-rust effect.Final water wash and pure water wash: ensure the surface is pure and free of impurities.

If this step is not done well, subsequent spraying efforts may be in vain. During production, our manufacturer always strictly controls the washing and chromating time to avoid over-processing and damaging the material.

2. Spraying process: layer upon layer for solid protectionSpraying is the key. According to different needs, you can choose two-coating, three-coating or four-coating processes. Simply put:

Two coats and one bake: primer + fluorocarbon topcoat → bake.

Suitable for general outdoor environments and low cost.Three coatings and one baking: primer + fluorocarbon metal topcoat + varnish → baking. Adding a varnish layer makes it more wear-resistant and weather-resistant, making it suitable for high-end buildings.

Four coats and two bakes: primer + isolation paint + fluorocarbon topcoat + varnish → two bakes. Super protective for use in extreme climate areas.

Specific process examples:Spray primer: Apply a layer of primer first to enhance adhesion and prevent direct exposure of aluminum.

Fluorocarbon topcoat: The primary coating that provides color and corrosion protection.Varnish (varnish): On the outermost layer, adds gloss and wear resistance.Baking: Curing at high temperature of 180-250℃ to make the coating harder and more durable.

When spraying, our manufacturer will control the distance and thickness of the spray gun to avoid sagging or missed coating.

The baking temperature and time are also adjusted according to the material to ensure an even coating.

Fluorocarbon paint coating types: how to choose?Second coat, third coat, and fourth coat are not random choices, they depend on your actual needs:Two coatings and one baking: pre-treatment → chroming → drying → primer → fluorocarbon topcoat → baking → packaging. Simple and practical, suitable for ordinary exterior walls.

Three coatings and one baking: pretreatment → chroming → drying → primer → fluorocarbon metal topcoat → varnish → baking → packaging. With the addition of varnish, it is more suitable for highly decorative areas such as commercial buildings.

Four coatings and two baking: pretreatment → chroming → drying → primer → isolation paint → baking → fluorocarbon topcoat → varnish → baking → packaging. An extra layer of isolation paint provides stronger corrosion resistance and is used in seaside or industrial areas.

Our manufacturer recommends: If you are in an area prone to acid rain, it is safer to choose three or four coats; in normal environments, two coats are enough. In short, tailor your clothes to suit your needs and don’t waste money.

Conclusion: Professional handling, extended lifespanThe fluorocarbon paint coating process seems complicated, but to put it bluntly, it is a combination of "cleaning + spraying + curing". As a coating manufacturer with many years of experience, we know that details determine success or failure - from pre-processing to baking, every step is strictly controlled, so that aluminum profiles can be used for ten or eight years without any problems. If you are a builder, decoration company or individual user and are worried about the anti-corrosion of aluminum profiles, you might as well try fluorocarbon paint, which may help you save a lot of maintenance costs.