Process for production of oriented silicon steel
US4319936A · kind A · utility
11Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14775
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for the production of cube-on-edge oriented silicon steel of high permeability which comprises varying the temperature of the initial anneal and the quench starting temperature of the hot rolled steel in accordance with the aluminum and nitrogen contents of the steel. The initial anneal temperature ranges from about 1040.degree. to 1175.degree. C. and the quench starting temperature from about 700.degree. to 1090.degree. C. Improved permeability and core loss values are obtained over relatively broad aluminum and nitrogen ranges, viz., 0.024% to 0.040% total aluminum and 0.0050% to 0.0090% nitrogen, by ladle analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.