Methods for producing a pre-lacquered metal sheet having Zn—Al—Mg coatings and corresponding metal sheet
US10612118B2 · kind B2 · utility
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9References
16Claims
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Key dates
| Filing date | Feb 24, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Feb 24, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12542
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is provided. The method includes providing a steel substrate having two faces coated by dipping the substrate in a bath, altering layers of magnesium oxide or magnesium hydroxide formed on the outer surfaces of the metal coatings by applying mechanical forces, rinsing and drying the outer surfaces, applying a conversion solution on the outer surfaces and painting the outer surfaces of the metal coatings. A metal sheet is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.