Press-formed article and method for manufacturing same
US9744744B2 · kind B2 · utility
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2References
13Claims
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Key dates
| Filing date | Mar 17, 2014 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Mar 24, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/58
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a press-formed article, said method comprising forming a galvanized steel sheet or an alloyed hot-dip galvanized steel sheet by hot press forming, wherein, after heating the steel sheet and holding the same, the forming is started at a temperature of 680-750° C. inclusive, while allowing liquid zinc to remain on the surface of the steel sheet, and the forming is performed while regulating the strain rate in a plastic deformation part of the steel sheet to 0.5 sec−1 or lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.