Thinly tin coated steel sheets having excellent rust resistance and weldability
US4999258A · kind A · utility
36Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1988 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | May 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12937
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Surface treated steel sheets having excellent rust resistance and weldability, suitable for manufacturing various kinds of cans, produced by a process comprising applying 0.2 to 1 g/m.sup.2 of tin coating on a surface of a nickel coated cold rolled steel sheet, applying 0.01 to 0.3 g/m.sup.2 of zinc coating on the tin coating in such an amount that the ratio of the zinc coating amount to the tin coating amount is in a range from 2 to 30% by weight, and heating the coatings to alloy substantially all of the zinc into the tin coating layer with substantially no non-alloyed zinc left on the tin coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.