Non-oriented electrical steel sheet and production method thereof
US-2024271255-A1 · Aug 15, 2024 · US
Grain-oriented electrical steel sheet and method of manufacturing same
US9704626B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9704626-B2 |
| Application number | US-201214395900-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 26, 2012 |
| Priority date | Apr 26, 2012 |
| Publication date | Jul 11, 2017 |
| Grant date | Jul 11, 2017 |
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Abstract
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A grain-oriented electrical steel sheet has low iron loss properties obtained though magnetic domain refining treatment by a chemical means. The steel sheet has a linear groove extending in a direction forming an angle of 45° or less with a direction orthogonal to a rolling direction of the steel sheet, in which presence frequency of fine grains with a length in the rolling direction of 1 mm or less in a floor portion of the groove is 10% or less, including 0% indicative of the absence of fine grains, the groove is provided with a forsterite film in an amount of 0.6 g/m 2 or more in terms of Mg coating amount per one surface of the steel sheet, and an average of angles (β angles) formed by <100> axes of secondary recrystallized grains facing the rolling direction and a rolling plane of the steel sheet is 3° or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A grain-oriented electrical steel sheet comprising a linear groove formed on a surface thereof and extending in a direction forming an angle of 45° or less with a direction orthogonal to a rolling direction of the steel sheet, wherein presence frequency of fine grains with a length in the rolling direction of 1 mm or less in a floor portion of the groove is 10% or less, including 0% indicative of the absence of fine grains, the groove is provided with a forsterite film in an amount of 0.6 g/m 2 or more and 3.0 g/m 2 or less in terms of Mg coating amount per one surface of the steel sheet, and an average of angles (β angles) formed by <100> axes of secondary recrystallized grains facing the rolling direction and a rolling plane of the steel sheet is 3° or less.
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Classifications
containing tin · CPC title
- H01F1/14775Primary
in the form of sheets · CPC title
Containing metal or metal compound · CPC title
Cold rolling · CPC title
characterised by the heat treatment · CPC title
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- What does patent US9704626B2 cover?
- A grain-oriented electrical steel sheet has low iron loss properties obtained though magnetic domain refining treatment by a chemical means. The steel sheet has a linear groove extending in a direction forming an angle of 45° or less with a direction orthogonal to a rolling direction of the steel sheet, in which presence frequency of fine grains with a length in the rolling direction of 1 mm or…
- Who is the assignee on this patent?
- Senda Kunihiro, Inoue Hirotaka, Okabe Seiji, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01F1/14775. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 11 2017 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).