Process for producing steel strip material for use in manufacture of shadow mask of Braun tube for color TV
US4309886A · kind A · utility
2Cited by
1References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 11, 1979 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Oct 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Low carbon steel strip is cold rolled with rolling reduction of 15 to 35% in final cold rolling step and annealed in form of tight coil at temperature of 520 to 600.degree. C. to provide product having grain size number of 4 to 7 and coercive force of not greater than 2.0 Oersted as measured with initial magnetization field of 25 Oersted. The product is especially suitable for manufacturing shadow mask of Braun tube for color TV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.