Method and apparatus for treating and annealing ferrous and non-ferrous articles
US3972513A · kind A · utility
Inventors
Key dates
| Filing date | Aug 7, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Aug 7, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/76
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus for rapid batchwise heating and/or annealing ferrous and non-ferrous materials in piece form has an inlet chamber for the introduction of the material, including an inlet lock and a roller table, with means to close the lock and to evacuate the chamber to a vacuum up to 1 .times. 10.sup..sup.-2 mm Hg; a furnace chamber with a metal bath compartment located underneath, with means to heat it to a metal vapor rising temperature; a lock valve between the inlet lock and the second chamber and means to transfer the material from the inlet chamber to the furnace chamber under evacuation; a second valve located between the furnace chamber and its means to heat it; means to controllably open the second valve on closing of the lock valve; means to evacuate the metal vapors and to disconnect the furnace chamber from the heating means to cool the furnace chamber after annealing to a condensing temperature of the metal; a cooling chamber with an outlet lock and means to evacuate and cool the material below oxidation levels and means to discharge the liquified metal from the furnace chamber to the cooling chamber. In the process, the furnace is evacuated, the material is introduced …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.