Zinc hot dip galvanized steel plate excellent in press formability and method for production thereof
US7338718B2 · kind B2 · utility
6Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Apr 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hot-dip galvanized steel sheet includes a plating layer substantially composed of the η phase and an oxide layer disposed on a surface of the plating layer. The oxide layer has an average thickness of 10 nm or more and includes a Zn-based oxide layer and an Al-based oxide layer. A method for producing the hot-dip galvanized steel sheet includes a hot-dip galvanization step, a temper rolling step, and an oxidation step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.