Method for forming an insulating glass film on surfaces of an oriented silicon steel sheet
US3932237A · kind A · utility
5Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Sep 19, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14783
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A highly adhesive and uniform insulating glass film can be formed on surfaces of an oriented silicon steel sheet by pickling a finally cold rolled silicon steel strip just before a decarburizing annealing, and successively subjecting the pickled steel strip to the decarburizing annealing, an application of an annealing separator and a final annealing at a high temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.