Electrical steel sheet
US-2017342568-A1 · Nov 30, 2017 · US
Non-oriented electrical steel sheet and surface treatment agent for non-oriented electrical steel sheet
US12492477B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12492477-B2 |
| Application number | US-202017761958-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 18, 2020 |
| Priority date | Sep 20, 2019 |
| Publication date | Dec 9, 2025 |
| Grant date | Dec 9, 2025 |
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Abstract
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There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm 3 ) 1/2 , the metal phosphate contains aluminum and zinc as metallic elements, and when measurement by an X-ray photoelectron spectroscopy is performed from a surface of the insulating coating film in a thickness direction of the non-oriented electrical steel sheet, a depth at which a strength of a 2p peak of zinc reaches a maximum is present closer to the surface side than a depth at which a strength of a 2p peak of aluminum reaches a maximum, and a maximum value of the strength of the 2p peak of zinc is 1 to 20 times a strength of the 2p peak of aluminum at the depth at which the strength of the 2p peak of zinc reaches a maximum.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A non-oriented electrical steel sheet comprising a base metal steel sheet and an insulating coating film that is formed on the base metal steel sheet, wherein the insulating coating film contains metal phosphate, organic resin, and water-soluble organic compound at 50 mass % or more in total with respect to a total mass of the insulating coating film, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (cal/cm 3 ) 1/2 , the metal phosphate contains aluminum and zinc as metallic elements, and when measurement by an X-ray photoelectron spectroscopy is performed from a surface of the insulating coating film in a thickness direction of the non-oriented electrical steel sheet, a depth at which a strength of a 2p peak of zinc reaches a maximum is present closer to the surface side than a depth at which a strength of a 2p peak of aluminum reaches a maximum, and a maximum value of the strength of the 2p peak of zinc is 1 to 20 times a strength of the 2p peak of aluminum at the depth at which the strength of the 2p peak of zinc reaches a maximum. 2 . The non-oriented electrical steel sheet according to claim 1 , wherein the insulating coating film contains, as the organic resin, 3 to 50 parts by weight of an acrylic resin per 100 parts by weight of the metal phosphate. 3 . The non-oriented electrical steel sheet according to claim 1 , wherein the metal phosphate further contains, as a metallic element, one or more types selected from the group of Co, Mg, Mn, and Ni. 4 . The non-oriented electrical steel sheet according to claim 2 , wherein the metal phosphate further contains, as a metallic element, one or more types selected from the group of Co, Mg, Mn, and Ni.
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- What does patent US12492477B2 cover?
- There is provided a non-oriented electrical steel sheet that includes a base metal steel sheet and an insulating coating film that is formed on a surface of the base metal steel sheet, wherein the insulating coating film mainly contains metal phosphate, organic resin, and water-soluble organic compound, the water-soluble organic compound has an SP value that is within a range of 10.0 to 20.0 (c…
- Who is the assignee on this patent?
- Nippon Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22C38/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 09 2025 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).