Non-oriented electrical steel sheet and manufacturing method thereof
US-9085817-B2 · Jul 21, 2015 · US
Non-oriented electrical steel sheet having high magnetic flux density and motor
US10597759B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10597759-B2 |
| Application number | US-201414909978-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 11, 2014 |
| Priority date | Aug 20, 2013 |
| Publication date | Mar 24, 2020 |
| Grant date | Mar 24, 2020 |
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Abstract
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A non-oriented electrical steel sheet having a chemical composition comprising C: not more than 0.010 mass %, Si: 1.0-7.0 mass %, Mn: 0.001-3.0 mass %, sol. Al: 0.0001-3.5 mass %, P: 0.01-0.2 mass %, S: not more than 0.010 mass %, N: not more than 0.010 mass % and the remainder being Fe and inevitable impurities, wherein a ratio (P120/Fe700) of a peak-peak height P120 of P near to an electronic energy of 120 eV to a peak-peak height Fe700 of Fe near to an electronic energy of 700 eV in an Auger differential spectrum obtained by analyzing a broken surface of a grain boundary through Auger electron spectroscopy is not less than 0.1 and a sheet thickness is 0.10-0.50 mm, and a motor using such a non-oriented electrical steel sheet as an iron core.
First claim
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The invention claimed is: 1. A non-oriented electrical steel sheet having a chemical composition comprising: C: not more than 0.010 mass %, Si: 1.0-7.0 mass %, Mn: 0.001-3.0 mass %, sol. Al: 0.0001-3.5 mass %, P: 0.01-0.2 mass %, S: not more than 0.010 mass %, N: not more than 0.010 mass %, and the remainder being Fe and inevitable impurities, wherein: a ratio (P 120 /Fe 700 ) of a peak-peak height P 120 of P near to an electronic energy of 120 eV to a peak-peak height Fe 700 of Fe near to an electronic energy of 700 eV in an Auger differential spectrum obtained by analyzing a broken surface of a grain boundary through Auger electron spectroscopy is not less than 0.1, and a sheet thickness is 0.10-0.50 mm. 2. The non-oriented electrical steel sheet according to claim 1 , wherein sol. Al is 0.0001-0.01 mass % in the chemical composition. 3. The non-oriented electrical steel sheet according to claim 1 , wherein the chemical composition further includes at least one group of chemical components among Groups A-C below: Group A: one or more selected from Sn: 0.01-0.1 mass %, and Sb: 0.01-0.1 mass %, Group B: one or more selected from Ca: 0.001-0.05 mass %, REM: 0.001-0.05 mass % and Mg: 0.001-0.05 mass %, and Group C: one or more selected from Ni: 0.01-0.5 mass %, Cu: 0.01-0.5 mass % and Cr: 0.01-0.5 mass %. 4. The non-oriented electrical steel sheet according to claim 2 , wherein the chemical composition further includes at least one group of chemical components among Groups A-C below: Group A: one or more selected from Sn: 0.01-0.1 mass % and Sb: 0.01-0.1 mass % Group B: one or more selected from Ca: 0.001-0.05 mass %, REM: 0.001-0.05 mass % and Mg: 0.001-0.05 mass %, and Group C: one or more selected from Ni: 0.01-0.5 mass %, Cu: 0.01-0.5 mass % and Cr: 0.01-0.5 mass %. 5. A motor comprising a non-oriented electrical steel sheet as claimed in claim 1 as an iron core. 6. A motor comprising a non-oriented electrical steel sheet as claimed in claim 2 as an iron core. 7. A motor comprising a non-oriented electrical steel sheet as claimed in claim 3 as an iron core. 8. A motor comprising a non-oriented electrical steel sheet as claimed in claim 4 as an iron core.
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Classifications
containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur · CPC title
containing N · CPC title
- C22C38/06Primary
containing aluminium · CPC title
containing tin · CPC title
Cold rolling · CPC title
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- What does patent US10597759B2 cover?
- A non-oriented electrical steel sheet having a chemical composition comprising C: not more than 0.010 mass %, Si: 1.0-7.0 mass %, Mn: 0.001-3.0 mass %, sol. Al: 0.0001-3.5 mass %, P: 0.01-0.2 mass %, S: not more than 0.010 mass %, N: not more than 0.010 mass % and the remainder being Fe and inevitable impurities, wherein a ratio (P120/Fe700) of a peak-peak height P120 of P near to an electronic…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22C38/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 24 2020 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).