Hot-rolled steel sheet for producing non-oriented electrical steel sheet and method of producing same
US10026534B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Jan 16, 2014 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | May 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/14791
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
By using a hot-rolled steel sheet of a predetermined chemical composition, and annealing the hot-rolled steel sheet in nitrogen atmosphere at 1000° C. for 30 seconds, and then immersing in a solution of 7% HCl at 80° C. for 60 seconds to obtain a hot-rolled steel sheet having a pickling weight loss of 10 g/m2 or more and 35 g/m2 or less, it is possible to obtain a hot-rolled steel sheet for producing a non-oriented electrical steel sheet that not only has excellent magnetic properties such as iron loss properties and magnetic flux density, but also has reduced steel sheet surface defects and an excellent manufacturing yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.