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Non-oriented electrical steel sheet being less in deterioration of iron loss property by punching
US9767946B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9767946-B2 |
| Application number | US-201314418351-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 1, 2013 |
| Priority date | Aug 21, 2012 |
| Publication date | Sep 19, 2017 |
| Grant date | Sep 19, 2017 |
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Abstract
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A non-oriented electrical steel sheet has a chemical composition having C: not more than 0.005 mass %, Si: 2-7 mass %, Mn: 0.033 mass %, Al: not more than 3 mass %, P: not more than 0.2 mass %, S: not more than 0.005 mass %, N: not more than 0.005 mass %, Se: 0.0001˜0.0005 mass %, As: 0.0005˜0.005 mass % and the remainder being Fe and inevitable impurities, and an iron loss W 15/50 in excitation at 50 Hz and 1.5 T of not more than 3.5 W/kg and a ratio (x/t) of amount of shear drop x (mm) to thickness t (mm) in punching of steel sheet of not more than 0.15 and is excellent in the iron loss property before punching and less in the deterioration of the iron loss property by punching.
First claim
Opening claim text (preview).
The invention claimed is: 1. A non-oriented electrical steel sheet having chemical composition comprising C: not more than 0.005 mass %, Si: 2˜7 mass %, Mn: 0.03˜3 mass %, Al: not more than 3 mass %, P: not more than 0.2 mass %, S: not more than 0.005 mass %, N: not more than 0.005 mass %, Se: 0.0001˜0.0005 mass %, As: 0.0005˜0.005 mass % and the remainder being Fe and inevitable impurities, and an iron loss W 15/50 in excitation at 50 Hz and 1.5 T of not more than 3.5 W/kg, a ratio (x/t) of amount of shear drop x (mm) to thickness t (mm) in punching of steel sheet of not more than 0.15, and an average crystal grain size of 30˜150 μm. 2. The non-oriented electrical steel sheet according to claim 1 containing either one or both of Sn: 0.003˜0.5 mass % and Sb: 0.003˜0.5 mass % in addition to the chemical composition.
Assignees
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Classifications
following hot rolling · CPC title
containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title
- C22C38/001Primary
containing N · CPC title
containing aluminium · CPC title
containing tin · CPC title
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- What does patent US9767946B2 cover?
- A non-oriented electrical steel sheet has a chemical composition having C: not more than 0.005 mass %, Si: 2-7 mass %, Mn: 0.033 mass %, Al: not more than 3 mass %, P: not more than 0.2 mass %, S: not more than 0.005 mass %, N: not more than 0.005 mass %, Se: 0.0001˜0.0005 mass %, As: 0.0005˜0.005 mass % and the remainder being Fe and inevitable impurities, and an iron loss W 15/50 in excitati…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22C38/001. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 19 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).