Method for overaging of hot dip metal coated steel material
US4294632A · kind A · utility
4Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1979 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Sep 24, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Method for overaging hot dip metal coated steel material to improve formability, comprising rapidly heating the material to a temperature of above 300.degree. C. but below that at which the coating is undesirably denatured at heating rate of at least 50.degree. C./sec., followed by controlled slow cooling of cooling rate of not more than 20.degree. C./sec. Total processing time required can be one or two minutes, thus the method can be continuously carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.