Painting galvanized sheet
| Painting galvanized sheet |
The structure of the paint system is by and large the same as before. Only in regard to rubbing down and filling have the methods and materials changed. Different paint suppliers recommend different procedures for their particular products. However, they all emphasize the extreme importance of thorough cleaning and point out that acid-hardening (etching) materials are required for adhesion to galvanized surfaces. We recommend paint shops to get in touch with the paint supplier concerned in each separate case.
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Once exposed to the air, bare galvanized sheet metal immediately starts to rust. When grinding galvanized sheet down to bare metal, it is therefore extremely important to apply primer to the exposed surface within 30 minutes at the most. Use an acid-hardening (etching) primer. |
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All new methods and materials can be used on cold-rolled sheet.
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