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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An exposed zinc surface will begin to oxidize immediately. After grinding and exposing zinc coated sheet metal it is therefore extremely important that the exposed surface is primed within a couple of minutes. Use an acid-hardening (etching) primer. |
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If filler is to be used on the surface, use only epoxy primer. |
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All new methods and materials can be used on cold-rolled sheet metal.
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