Manufacturing coated steel strip
US4297398A · kind A · utility
2Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Mar 3, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2/29
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Steel strip is dipped in a molten metal bath (e.g. Al-Zn) maintained at above 500.degree. C., cooled to solidify the metal coating, and then cooled to below 475.degree. C. by an intense and rapid cooling operation which does not impair the flatness of the strip, e.g. immersion in a hot aqueous bath or spraying a mist. Before hot-dipping, the steel strip is preferably recrystallisation annealed and cooled to a temperature not lower than that of the molten metal bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.