Method of producing non-oriented electrical steel sheet having good magnetic properties
US5421912A · kind A · utility
7Cited by
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4Claims
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Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/1266
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing non-oriented electrical steel sheet comprising the steps of preparing steel comprising, by weight, up to 2.5% silicon, up to 1.0% aluminum and up to 2.5% (Si+2Al), with the remainder being iron and unavoidable impurities, hot rolling and cold rolling the steel to a final thickness and following this by finish annealing, wherein the average cooling rate between Ar.sub.3 and Ar.sub.1 during cooling transformation (.gamma..fwdarw..alpha.) of the steel is controlled to be 50.degree. C./s or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.