Grain-oriented electrical steel sheet
US-2018066334-A1 · Mar 8, 2018 · US
Grain-oriented electrical steel sheet and magnetic domain refinement method therefor
US11318562B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11318562-B2 |
| Application number | US-201716472552-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 20, 2017 |
| Priority date | Dec 22, 2016 |
| Publication date | May 3, 2022 |
| Grant date | May 3, 2022 |
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Abstract
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A grain-oriented electrical steel sheet includes a groove formed on a surface and a solidified alloy layer formed under the groove, wherein the solidified alloy layer includes particles of a certain average diameter.
First claim
Opening claim text (preview).
The invention claimed is: 1. A grain-oriented electrical steel sheet comprising: a groove formed on a surface of an electrical steel sheet; and a solidified alloy layer formed under the groove and from the groove to a base portion of the steel sheet, wherein the solidified alloy layer includes particles of which an average particle diameter is from 1 to 7 μm, wherein a thickness of the solidified alloy layer is 0.6 to 3.0 μm. 2. A grain-oriented electrical steel sheet comprising: a groove formed on a surface of an electrical steel sheet; and a solidified alloy layer formed under the groove and from the groove to a base portion of the steel sheet, wherein the solidified alloy layer includes recrystallized particles of which an average particle diameter is from 8 to 20 μm after stress relaxation annealing, wherein a thickness of the solidified alloy layer is 0.6 to 3.0 μm. 3. The grain-oriented electrical steel sheet of claim 1 , further comprising a non-metallic oxide layer formed on the surface of the electrical steel sheet. 4. The grain-oriented electrical steel sheet of claim 3 , wherein the non-metallic oxide layer includes Mg 2 SiO 4 , Al 2 SiO 4 , or Mn 2 SiO 4 . 5. The grain-oriented electrical steel sheet of claim 3 , further comprising an insulating coating layer formed on the non-metallic oxide layer. 6. The grain-oriented electrical steel sheet of claim 1 , wherein the groove is linear and is formed at an angle of 82° to 98° with respect to a rolling direction of the electrical steel sheet. 7. The grain-oriented electrical steel sheet of claim 1 , wherein a depth D of the groove is from 3% to 8% of the thickness of the electrical steel sheet.
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Classifications
involving a localised treatment · CPC title
Application of a separating or insulating coating · CPC title
- C21D8/12Primary
during manufacturing of articles with special electromagnetic properties · CPC title
End product comprising different layers, coatings or parts of cermet · CPC title
- C21D8/1277Primary
involving a particular surface treatment (C21D8/1294 takes precedence) · CPC title
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- What does patent US11318562B2 cover?
- A grain-oriented electrical steel sheet includes a groove formed on a surface and a solidified alloy layer formed under the groove, wherein the solidified alloy layer includes particles of a certain average diameter.
- Who is the assignee on this patent?
- Posco
- What technology area does this patent fall under?
- Primary CPC classification C21D8/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 03 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).