Manufacture of ductile high-permeability grain-oriented silicon steel
US4793873A · kind A · utility
3Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Jun 3, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jun 3, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1283
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
For making a ductile boron-containing grain-oriented silicon steel, there is practiced, at a late stage in the making of the product either during the final texture anneal or a subsequent anneal, a high-temperature anneal in a reducing atmosphere with the use of a separating-agent coating, particularly magnesium oxide, which contains an effective amount of a compound of molybdenum and/or tungsten.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.