KR20200097346A - 방향성 전자 강판 - Google Patents
방향성 전자 강판 Download PDFInfo
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Abstract
Description
도 2는 제1 실시 형태에 관한 방향성 전자 강판에 대하여 GDS를 행한 경우의 결과의 일례를 나타내는 그래프이다.
Claims (4)
- 모재 강판과;
상기 모재 강판 상에 접하여 형성된 하층 피막과;
상기 하층 피막 상에 접하여 형성되고, 인산염과 콜로이드상 실리카를 주체로 하는 절연 피막
을 구비하고,
상기 모재 강판은, 화학 성분으로서, 질량%로,
C: 0.085% 이하;
Si: 0.80 내지 7.00%;
Mn: 0.05 내지 1.00%;
Al: 0.010 내지 0.065%;
N: 0.0040% 이하;
Seq=S+0.406·Se: 0.015% 이하;
B: 0.0005 내지 0.0080%
를 함유하고,
잔부 Fe 및 불순물로 이루어지고,
상기 모재 강판은, 장축 길이가 1㎛ 이상 20㎛ 이하인 B 화합물을 1×10 내지 1×106개/㎣의 개수 밀도로 함유하고,
상기 하층 피막은, 포르스테라이트가 주체인 글래스 피막, 또는 산화규소가 주체인 중간층인
것을 특징으로 하는 방향성 전자 강판. - 제1항에 있어서, 상기 하층 피막이 상기 글래스 피막이며,
상기 절연 피막 및 상기 글래스 피막을 제거하여 글로우 방전 발광 분석으로 측정하고, 상기 모재 강판의 판 두께 중심보다도 상기 글래스 피막측을, 상기 글래스 피막측의 표층 영역과 상기 표층 영역과 상기 판 두께 중심 사이의 중심 영역의 둘로 나누고, 상기 중심 영역에 도달할 때까지의 스퍼터 시간을 t(center)라고 하고, 상기 표층 영역에 도달할 때까지의 스퍼터 시간을 t(surface)라고 했을 때, 상기t(center)에 있어서의 B의 발광 강도 IB_t(center)와, 상기 t(surface)에 있어서의 B의 발광 강도 IB_t(surface)가, 하기 식(1)을 만족시키는
것을 특징으로 하는 방향성 전자 강판.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 B 화합물이 Fe2B와 Fe3B의 적어도 한쪽인 것을 특징으로 하는 방향성 전자 강판.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018010203 | 2018-01-25 | ||
| JPJP-P-2018-010203 | 2018-01-25 | ||
| PCT/JP2019/002258 WO2019146694A1 (ja) | 2018-01-25 | 2019-01-24 | 方向性電磁鋼板 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20200097346A true KR20200097346A (ko) | 2020-08-18 |
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| KR (1) | KR102438155B1 (ko) |
| CN (1) | CN111655886B (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11952646B2 (en) | 2019-01-16 | 2024-04-09 | Nippon Steel Corporation | Grain-oriented electrical steel sheet having excellent insulation coating adhesion without forsterite coating |
| JP7352108B2 (ja) * | 2019-09-19 | 2023-09-28 | 日本製鉄株式会社 | 方向性電磁鋼板 |
| WO2021117325A1 (ja) | 2019-12-09 | 2021-06-17 | Jfeスチール株式会社 | 無方向性電磁鋼板とモータコアならびにそれらの製造方法 |
| KR102820621B1 (ko) * | 2020-07-15 | 2025-06-13 | 닛폰세이테츠 가부시키가이샤 | 방향성 전자 강판 및 방향성 전자 강판의 제조 방법 |
| JP7040584B1 (ja) * | 2020-10-06 | 2022-03-23 | Jfeスチール株式会社 | 金属ストリップ表面への溝形成方法、および方向性電磁鋼板の製造方法 |
| CN112646966B (zh) * | 2020-12-17 | 2023-01-10 | 首钢智新迁安电磁材料有限公司 | 一种无底层取向硅钢的制备方法及其产品 |
| US20240249863A1 (en) * | 2021-05-28 | 2024-07-25 | Jfe Steel Corporation | Method of producing grain-oriented electrical steel sheet |
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- 2019-01-24 US US16/962,798 patent/US11469017B2/en active Active
- 2019-01-24 RU RU2020125130A patent/RU2740749C1/ru active
- 2019-01-24 CN CN201980009355.8A patent/CN111655886B/zh active Active
- 2019-01-24 JP JP2019567147A patent/JP7010305B2/ja active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3744870A4 (en) | 2021-06-02 |
| WO2019146694A1 (ja) | 2019-08-01 |
| US11469017B2 (en) | 2022-10-11 |
| EP3744870B1 (en) | 2023-05-10 |
| BR112020014283A2 (pt) | 2020-12-08 |
| CN111655886B (zh) | 2022-08-30 |
| CN111655886A (zh) | 2020-09-11 |
| PL3744870T3 (pl) | 2023-07-31 |
| US20210027922A1 (en) | 2021-01-28 |
| RU2740749C1 (ru) | 2021-01-20 |
| KR102438155B1 (ko) | 2022-08-31 |
| JP7010305B2 (ja) | 2022-02-10 |
| JPWO2019146694A1 (ja) | 2021-01-28 |
| EP3744870A1 (en) | 2020-12-02 |
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