Rust paint: How to paint and which corrosion protection paint to choose?

Corrosion is a serious problem for metal components, whether in construction, industry or everyday use. This process can lead to significant deterioration in the quality and strength of materials. To effectively protect metal surfaces against rust, proper preparation and selection of the right anti-corrosion paint is crucial. In this article, you will find out how to paint rusted surfaces and which anti-corrosion paint you should choose.

Surface preparation before painting

Successful painting of corrosion-prone surfaces requires careful preparation. Rust, i.e. oxides of iron, aluminium or zinc, are formed on metal surfaces by a reaction with oxygen and water. This non-uniform layer reduces the adhesion of the paint and significantly affects the quality of the final result.

How do I remove rust?

• Abrasive blasting: Grinding, shot blasting or sandblasting are the most effective methods for removing rust. They make the surface smooth and ready for further processing.

Recommendations for surface preparation:

1. Use protective gloves when touching and handling cleaned items to avoid contact with sweat and grease.
2. Roofed storage: Store cleaned components in a dry place to prevent them from rusting again.
3. Avoid stacking wet items: Water can cause new rust outbreaks.
4. Maintain a constant temperature and low humidity in the work area, which promotes better paint drying and adhesion.
5. Minimise time between cleaning and painting the individual components.

Choosing a corrosion protection paint

The most effective means of protection against corrosion is powder coating. Unlike traditional methods, powder coating offers exceptional weather and mechanical resistance.

Why is powder coating effective in corrosion protection?

1. Creates a tight seal: Powder coating forms an impermeable layer that blocks the access of water and oxygen to the metal surface, which inhibits the corrosion process.
2. Excellent grip: Uniform surface coverage ensures better adhesion.
3. Resistance to mechanical damage: Powder coating is more scratch and impact resistant than traditional paint coatings.
4. Resistance to external conditions: Powder coatings are characterised by their ability to withstand extreme temperatures, rain, snow and changes in humidity, making them ideal for outdoor applications such as building facades, railings, fences and urban infrastructure elements.

Advantages of powder coating:

• Cost-effectiveness: Powder coatings offer better results after one coat compared to many traditional paints, and are also more energy efficient during application and curing.
• Aesthetics: Powder coatings at Avangarda Coatings offer a wide range of custom colours, allowing you to customise the appearance of your components. This allows functionality to be combined with an attractive, personalised look.
• Eco-friendliness: Powder coatings contain no solvents and emit fewer VOCs.

Practical application of powder coating

Powder coating is widely used in a variety of industries:

• Automotive industry: Body protection for cars, motorbikes and spare parts.
• Construction: Protection of steel structures, railings, fences, building facades and urban infrastructure elements.
• Furniture industry: Protection of metal furniture parts, such as table legs and cabinet handles.

Summary

Powder coating is the most effective way to protect metal surfaces against corrosion. The process involves coating the metal with a layer of powder, which is then cured at a high temperature. The result is a tight coating that blocks water and oxygen from reaching the surface of the metal.

Powder coating is a modern and effective solution in the fight against corrosion, providing long-lasting protection and an aesthetically pleasing appearance. Crucial to effective rust protection are both the selection of the right powder coating and care in surface preparation.

To choose a high-quality powder coating, read the article "Key selection criteria for high-quality powder coating".