Protective atmosphere process for annealing and/or hardening ferrous metals
US4632707A · kind A · utility
2Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Apr 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/76
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for heating steel under atmosphere for annealing or hardening wherein the atmosphere is generated by injecting a mixture of dimethyl ether and nitrogen into the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.