Method for producing grain-oriented electrical steel sheet
US-2024271254-A1 · Aug 15, 2024 · US
Grain oriented electrical steel sheet and method for manufacturing the same
US9396872B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9396872-B2 |
| Application number | US-201113814675-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 5, 2011 |
| Priority date | Aug 6, 2010 |
| Publication date | Jul 19, 2016 |
| Grant date | Jul 19, 2016 |
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Abstract
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A grain oriented electrical steel sheet may reduce iron loss of material with linear grooves formed thereon for magnetic domain refinement and offer excellent low iron loss properties when assembled as an actual transformer, where the steel sheet has sheet thickness of 0.30 mm or less, linear grooves are formed at intervals of 2-10 mm in the rolling direction, the depth of each of the linear grooves is 10 μm or more, the thickness of the forsterite film at bottom portions of the linear grooves is 0.3 μm or more, total tension applied to the steel sheet by the forsterite film and tension coating is 10.0 MPa or higher in rolling direction, and the proportion of eddy current loss in iron loss W 17/50 of the steel sheet is 65% or less when alternating magnetic field of 1.7 T and 50 Hz is applied to the steel sheet in the rolling direction.
First claim
Opening claim text (preview).
The invention claimed is: 1. A grain oriented electrical steel sheet comprising: a forsterite film, a tension coating on a surface of the steel sheet, and linear grooves for magnetic domain refinement on a surface of the steel sheet, wherein the steel sheet has a sheet thickness of 0.30 mm or less, the linear grooves are located at intervals of 2 to 10 mm in a rolling direction, depth of each of the linear grooves is 10 μm or more, thickness of the forsterite film at bottom portions of the linear grooves is 0.3 μm or more, total tension applied to the steel sheet by the forsterite film and the tension coating is 10.0 MPa or higher in the rolling direction, and a proportion of eddy current loss in iron loss W 17/50 of the steel sheet is 65% or less when an alternating magnetic field of 1.7 T and 50 Hz is applied to the steel sheet in the rolling direction.
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Classifications
containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title
with insulating coating · CPC title
containing silicon · CPC title
containing nickel {(C22C38/105 takes precedence)} · CPC title
characterised by the working steps · CPC title
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- What does patent US9396872B2 cover?
- A grain oriented electrical steel sheet may reduce iron loss of material with linear grooves formed thereon for magnetic domain refinement and offer excellent low iron loss properties when assembled as an actual transformer, where the steel sheet has sheet thickness of 0.30 mm or less, linear grooves are formed at intervals of 2-10 mm in the rolling direction, the depth of each of the linear gr…
- Who is the assignee on this patent?
- Inoue Hirotaka, Omura Takeshi, Yamaguchi Hiroi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C22C38/60. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 19 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).