Process for the preparation of ferrous parts of a color television tube and furnace for operating such a process
US4714497A · kind A · utility
11Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1984 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Feb 6, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/142
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a process for preparing ferrous parts of a color television tube and a furnace for operating such a process. According to the invention, each ferrous part behind the base of the television tube, is prepared in a single furnace and undergoes successively an annealing, a reduction and an oxidation in three parts of the furnace 3, 4 and 5, in such a way as to eliminate the mechanical stresses, remove the rust and deposit homogeneous and adhesive layers of iron oxides I and II.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.