Annealing furnace cooling and purging system and method
US7371296B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2004 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Mar 21, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1277
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a method and system for an improved annealing furnace cooling and purging, atmosphere injection jets are provided in close proximity to a bottom of a tray carrying a lamination product in a cooling section. Atmospheric extraction tubes are also provided extracting atmosphere which is delivered to a high temperature variable speed fan which then outputs at a pressure side atmosphere to tubes having the injection jets. The system may be retrofit into an existing annealing furnace already having water cooled finned tubes and a recirculation fan in the cooling section. Cooling water tubes and a recirculating fan may also be provided in a purge vestibule located after an output from the cooling section for additional cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.