Annealing steel strip
US4710240A · kind A · utility
3Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Mar 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/54
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Cold rolled steel strip is uncoiled, cleaned, and passed into an annealing furnace, wherein the strip is heated to and held at a relatively hot temperature, subsequently quenched, and coiled; after a period of storage the strip passes through the same equipment but now including additional pickling for removing an oxide layer, and the strip passes through the annealing furnace a second time, while operating said annealing furnace for heating to and holding at a lower temperature to obtain aging; thereafter the strip is coiled again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.