Grain-oriented electrical steel sheet and method for improving iron loss properties thereof
US-2015132547-A1 · May 14, 2015 · US
Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor
US10648083B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10648083-B2 |
| Application number | US-201415502440-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2014 |
| Priority date | Aug 7, 2014 |
| Publication date | May 12, 2020 |
| Grant date | May 12, 2020 |
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- Title
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Abstract
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A pre-coating agent composition for a grain-oriented electrical steel sheet, a grain-oriented electrical steel sheet including the same, and a manufacturing method thereof are provided. Particularly, a pre-coating agent composition for a grain-oriented electrical steel sheet including an acid containing boron (B); and a solvent, a grain-oriented electrical steel sheet including the same, and a manufacturing method thereof are provided.
First claim
Opening claim text (preview).
The invention claimed is: 1. A grain-oriented electrical steel sheet comprising: a pre-coating layer formed on a surface of the grain-oriented electrical steel sheet; and a tension coating layer formed on a surface of the pre-coating layer, wherein the grain-oriented electrical steel sheet is a grain-oriented electrical steel sheet from which a forsterite (Mg 2 SiO 4 ) film is removed, the pre-coating layer includes an acid containing boron (B)), metal dihydrogen phosphates, and silica, and adhesion between the grain-oriented electrical steel sheet and the tension coating layer is controlled by the pre-coating layer, wherein the acid containing boron (B) is at least one selected from the group consisting of borinic acid, boronic acid, boric acid and a combination thereof, and the pre-coating layer comprises 20 to 40 parts by weight of the silica and 5 to 15 parts by weight of the acid containing boron (B), based on 100 parts by weight of the metal dihydrogen phosphates. 2. The grain-oriented electrical steel sheet of claim 1 , wherein: the metal dihydrogen phosphates in the pre-coating layer are one or more selected from the group consisting of aluminum dihydrogen phosphate (Al(H 2 PO 4 ) 3 ), magnesium dihydrogen phosphate (Mg((H 2 PO 4 ) 2 ) and a combination thereof. 3. The grain-oriented electrical steel sheet of claim 2 , wherein: the silica in the pre-coating layer is one or more selected from the group consisting of silica dispersed in a dispersion medium in a colloid form, solid silica in a powder form and a combination thereof. 4. The grain-oriented electrical steel sheet of claim 2 , wherein: a composition of the grain-oriented electrical steel sheet includes Sn: 0.03 to 0.07 wt %, Sb: 0.01 to 0.05 wt %, P: 0.01 to 0.05 wt %, Fe and other inevitably added impurities.
Assignees
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Classifications
Cold rolling · CPC title
containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur · CPC title
containing aluminium · CPC title
containing silicon · CPC title
- C23C22/07Primary
containing phosphates · CPC title
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- What does patent US10648083B2 cover?
- A pre-coating agent composition for a grain-oriented electrical steel sheet, a grain-oriented electrical steel sheet including the same, and a manufacturing method thereof are provided. Particularly, a pre-coating agent composition for a grain-oriented electrical steel sheet including an acid containing boron (B); and a solvent, a grain-oriented electrical steel sheet including the same, and a …
- Who is the assignee on this patent?
- Posco
- What technology area does this patent fall under?
- Primary CPC classification C23C22/07. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 12 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).