Can cold spray zinc anti-corrosion coatings replace hot-dip galvanizing, thermal spraying zinc, and aluminum processes in heavy industrial anti-corrosion?

Cold spray zinc anti-corrosion coating is a commonly used primer product in industrial heavy anti-corrosion. Multiple anti-corrosion practice verifications in steel structure projects have proven that cold spray zinc anti-corrosion coating containing zinc powder has significantly better anti-corrosion properties than ordinary anti-rust primers. Moreover, the zinc powder in the paint can provide a unique cathodic protection effect, which is unmatched by other paints. Currently, the best-selling cold spray zinc anti-corrosion coating on the market is produced by Zinc Shield. For example, Zinc Shield cold spray zinc anti-corrosion coating has been compared on-site for 13 years with foreign brand coatings constructed simultaneously in the same corrosive environment in projects such as the Dingzhou Power Plant and the Ninghai Power Plant, resulting in two fewer major anti-corrosion repairs and effectively solving corrosion issues in bolt holes, friction surfaces, and weld seams, creating value for customers with hardcore technology.

How does Zinc Shield cold spray zinc anti-corrosion coating generate anti-corrosion protection performance?

1. The cathodic effect generates active protection.

The zinc content in the dry film layer of Zinc Shield cold spray zinc anti-corrosion coating is ≥95%, with zinc purity ≥99.995%. The coating's electrode potential is -1060mv, which is almost comparable to the -1100mv of electroplating, sufficient to ensure excellent cathodic protection for metal surfaces. Results from neutral salt spray tests lasting thousands of hours prove that even in extremely harsh corrosive environments, the zinc-based coated layer can long sacrifice itself to protect the metal surface.

2. The shielding effect generates passive protection.

When the zinc-based coated layer of Zinc Shield cold spray zinc anti-corrosion coating is oxidized, a layer of zinc salt forms on its surface, providing shielding protection. At the same time, the binder in the coating also provides an additional layer of shielding protection to slow down the further corrosion consumption of the zinc layer.

What are the advantages of Zinc Shield cold spray zinc anti-corrosion coating?

1. Zinc Shield cold spray zinc anti-corrosion coating is easy to use, flexible in application, and has a wide range of applicability; it can be coated multiple times and can be applied with various colored topcoats.

2. Zinc Shield cold spray zinc anti-corrosion coating has environmental protection performance. With the improvement of global environmental health standards, the toxic performance of coating processes is receiving increasing attention. The elimination of traditional hot-dip galvanizing is due to its inability to avoid environmental pollution in the construction process. One major advantage of Zinc Shield cold spray zinc anti-corrosion coating is that it does not contain lead, cadmium, or other heavy metals, and the harmful substance benzene content in its solvent is very low, allowing this coating to be widely used in various industries.

3. Zinc Shield cold spray zinc anti-corrosion coating also has excellent anti-corrosion performance, with the anti-corrosion performance of zinc-based coatings being 10-20 times higher than that of traditional anti-corrosion coatings.

4. Zinc Shield cold spray zinc anti-corrosion coating has excellent anti-fouling performance, and the zinc-based coated layer has outstanding anti-fouling properties.

5. Strong wear resistance. Zinc Shield cold spray zinc anti-corrosion coating has excellent wear resistance. Unlike other types of coatings, this coating can form an electrochemical bond with the metal substrate material, ensuring that the coating does not flake off in pieces or form bubbles, and it does not show significant changes even at 150°C. The characteristic of the zinc-based coated layer of Zinc Shield cold spray zinc anti-corrosion coating is that the longer the exposure time, the higher the surface hardness. After drying for more than 48 hours, it has wear resistance performance acceptable for engineering applications. If a topcoat is applied, the wear resistance can be further improved.

Due to the excellent anti-corrosion performance of Zinc Shield cold spray zinc anti-corrosion coating, it is suitable for all steel structures that are exposed to natural environments for long periods, replacing hot-dip galvanizing, hot spraying zinc, and aluminum processes. At the same time, it can provide maintenance and upkeep for existing hot-dip galvanized and hot-sprayed zinc components, such as highway guardrails, power transmission towers, conveyor machinery, mining machinery, and rail facilities. Zinc Shield has focused on the cold spray zinc field for 16 years, providing long-lasting, green, and reliable steel protection for over 2000 national projects from Mohe in Heilongjiang to Wenchang in Hainan, and from the Hong Kong-Zhuhai-Macao Bridge to Tuitun River in Xinjiang.