Process for the hot-dip galvanizing of metal strip made of high-strength steel
US6913658B2 · kind B2 · utility
4Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Aug 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/76
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for the continuous thermochemical treatment of metal strip. It is useful with steel strip, of the oxidation-reduction type, in which the strip moves through a furnace in a protective atmosphere. The strip passes through at least one partial or total isolation device positioned within one or more sections of the furnace. The strip is heated in this isolation device in atmospheres having a dew point tailored to each strip according to the specific composition of the steel so that the atmosphere is oxidizing in the case of certain addition elements, but remains reducing in the case of iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.