Process of heating and cooling charges in batch-process industrial furnaces
US4571273A · kind A · utility
3Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Jun 26, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/67
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a process of heating and cooling charges in batch-process industrial furnaces, particularly in a process of cooling coils of steel wire or strip steel in bell-type annealing furnaces, the charge is heated and cooled in contact with circulated protective gas. The cooling time is shortened and the power input to the circulating fan is reduced by changing the composition of the protective gas so as to decrease the specific gravity of the protective gas just before the beginning of the cooling period and/or during the cooling period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.