Primer
For priming the EC-method is applied (EC - electro-coating, that is to say electro immersion method). According to today's state of technology with this coating method we achieve the best priming results for frames made of galvanized steel sheets.
Steel Frames - galvanized and EC-coated
Today, steel frames are always made of hot-galvanized, only in exceptional cases of electrolytic galvanized, thin sheets. The conserving corrosion protection by hot galvanizing alone can not be considered as a final result. A zinc surface is not resistant to a number of influences. Thus, zinc forms in combination with other materials corrosion products, such as white rust, and the unprotected zinc surface would degrade. Furthermore, a zinc surface is only restrictively usable for subsequent coating treatment. For these reasons, a material-specific protection and priming is required coupled with a thorough surface cleaning.
Process Cycle
Cleaning, degreasing, phospatizing, washing, electro-immersion, burning-in. The high burning temperature of approx. 180°C produces a particularly resistant dry coating which also provides best conditions for storage, mounting and final coating in addition to an excellent adhesion to zinc.
Only electro-immersion achieves a smooth, run-free coating on all surfaces, radius, edges and in all liquid-accessible hollow spaces - thus a comprehensive coating and a high-quality protection.
The costs for subsequent coating treatment of the frame are considerably reduced by the EC-coating.
- uneven coating thickness with conventional coating methods
- tears- and run-forming, flow direction to edges on physical grounds
- perfectly corrosion protected surfaces and edges
- no tear- and run-forming on surfaces
- no flow direction to edges
- even coating thickness only by EC-method
Without "ifs and buts" a optimal surface protection on zinc surfaces can be achieved by primer-coating with electro immersion method and by additional burn-in of the applied coating film.
Long-term weathering under unfinished building conditions, condensation water and salt spray tests have shown: galvanization and EC-priming are unbeatable !
There is simply no intelligent alternative.
Effective - economical - environmentally friendly !
Novoferm quality - the standard for steel frames