Method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property
US4875947A · kind A · utility
12Cited by
12References
4Claims
0Family size
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Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1255
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property comprises the steps of decarbonization annealing a grain-oriented electrical steel sheet which has been cold rolled to a final thickness, coating the decarbonization-annealed sheet with an annealing separator consisting of magnesium blended with one or more salts of alkali metal or alkaline-earth metal, and finish annealing the coated sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.