Method of producing unidirectional electromagnetic steel sheet having excellent film characteristics and magnetic characteristics
US6395104B1 · kind B1 · utility
4Cited by
10References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 15, 1998 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14783
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing a grain-oriented electrical steel sheet wherein during the decarburization annealing step, the steel sheet is first rapidly heated in a rapid heating chamber and the PH2O/PH2 ratio in the rapid heating chamber is more than the PH2O/PH2 ratio in the decarburization annealing furnace so as to provide improved oxide film adhesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.