Hot-galvanized steel product, notably intended to be phosphated, and method for preparing such a product
US4670354A · kind A · utility
6Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Jul 3, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jul 3, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12799
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a phosphated steel product and a method for producing the product. The method comprises passing at least one side of a steel strip through a molten bath of a metal selected from the group consisting of Zn-Al and Zn-Fe to form a first coating, electroplating a second coating consisting of essentially a pure metal selected from the group consisting of Mn, Fe and Ni onto the first coating and subjecting the exposed surface of the second coating to a phosphating treatment to form a phosphate coating on the second coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.