Tower furnace for heat treatment of metal strips
US6425756B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 21, 2001 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/562
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tower furnace for heat treatment of metal strips having a pre-heating section (3) and a high-temperature section (5) connected thereto at the top forming a housing (4) separate from the pre-heating section (3) is described, whereby the pre-heating section (3) equipped with a preferably gas-heated muffle (7) exhibits a connecting stopper (6) made of heat-insulating material for the high-temperature section (5) inserted into the muffle (7). To create advantageous structural conditions it is proposed that the high-temperature section (5) is also fitted with a preferably gas-heated muffle (12) which encloses the connecting stopper (6) externally and connects to this in a gas-tight manner preferably by way of a fluid seal (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.