Rare earth metal treated cold rolled, non-oriented silicon steel and method of making it
US3960616A · kind A · utility
17Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1975 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Jun 19, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/064
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A melt for cold rolled, non-oriented silicon steel is deoxidized and thereafter treated with mischmetal or a mischmetal alloy to desulfurize the melt to 0.012% by weight sulfur or less without the formation of a polluting smoke. The deoxidation is carried out to the extent that, and the mischmetal is added in an amount such that, the melt composition, has a total cerium content of up to about 400 ppm. and preferably from about 75 to about 250 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.