Plant for generating an atmosphere for the heat treatment of metals
US4279406A · kind A · utility
10Cited by
0References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1980 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Feb 20, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to the generation of an atmosphere for the heat treatment of metals, incorporating an alcohol of the methanol type that decomposes by cracking. A generating plant comprises a nitrogen circuit connected to a pressure source, an alcohol circuit connected to a pressurized tank containing the alcohol in the liquid phase and an injector arranged to feed the alcohol and nitrogen into the furnace in the form of a mist of alcohol within a jet of nitrogen. The invention is applicable in particular to the hardening, heating prior to quenching, and annealing of steels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.