Loko Galvano was one of the first galvanising companies to specialise in thick-film passivation.
Features & Benefits
- Very high corrosion resistance
- The possibility of combining with a relatively thin zinc layer
- Temperature resistance up to 210°C
- Reduced environmental impact (Chrome 6 free)
Applying sealing can even further improve the corrosion resistance after thick layer passivation. We use Gleitstar® topcoat. This post-treatment has a repairing effect on scratches and light damage and is particularly suitable for drum work.
Thick-layer passivation is pre-eminently suited for products that are currently hot-dip galvanised. Examples are fencing components, fastening materials, bodywork parts, stable construction materials, and other products used in corrosive circumstances.
Advantages of thick-film versus thermal galvanising
- Suitable for screw thread (without chasing)
- Visually more attractive (the original zinc colour is retained, while hot-dip galvanised products quickly turn white)
- More environmentally friendly as the zinc layer does not contain cobalt, and it even minimises the use of zinc to the minimum
- More cost-effective
| Treatment | Stages with white rust | Result until red rust |
|---|---|---|
| Standard passivation | 48 hours | 168 hours |
| Thick-film passivation with Gleitstar® topcoat | 336 hours | >600 hours |
| Hot-dip galvanised (for comparison purposes) | 24 hours | 400 – 600 hours |
