JP2019157152A - 方向性電磁鋼板 - Google Patents
方向性電磁鋼板 Download PDFInfo
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- JP2019157152A JP2019157152A JP2018041109A JP2018041109A JP2019157152A JP 2019157152 A JP2019157152 A JP 2019157152A JP 2018041109 A JP2018041109 A JP 2018041109A JP 2018041109 A JP2018041109 A JP 2018041109A JP 2019157152 A JP2019157152 A JP 2019157152A
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- electrical steel
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- 229910000976 Electrical steel Inorganic materials 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 53
- 229910052742 iron Inorganic materials 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 16
- 238000010894 electron beam technology Methods 0.000 description 7
- 230000005381 magnetic domain Effects 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Soft Magnetic Materials (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Description
本発明で用いる磁区細分化を生じさせるための歪みの導入方法には、レーザ照射、電子ビーム照射又は熱プラズマ照射等の公知の方法を用いることができる。鋼板の表面と裏面とで別の方法を用いても構わない。
以上の手法に従って磁区細分化処理を行うことによって、幅が0.01〜0.5mm程度の線状に深さが0.01mm以上板厚未満程度の歪導入部を形成する。
すなわち、図2に示す事例は、上記した間隔tおよび角度αがともに、歪導入部2と歪導入部3とで異なる場合であり、図3に示す事例は、同様に間隔tおよび角度αがともに、歪導入部2と歪導入部3とで異なり、かつ歪導入部2の角度αが0°の場合である。これらは典型的な事例を示しているものであり、歪導入部2と歪導入部3とが交差する配置であれば様々な変形が可能である。その中でも特に、鋼板の表面と裏面の間隔の差が50%以下の交差配置が、低い鉄損値を鋼板内でばらつきなく実現するのに有効である。
すなわち、歪導入部2における交点Pの間隔D2および歪導入部3における交点Pの間隔D3は、狭すぎると鉄損の増大が生じ、一方、この間隔が広いと、鋼板の幅方向の鉄損に変動が生じやすくなる。電力用の変圧器に用いる方向性電磁鋼板は幅100mm程度の細い幅で用いることも多く、このような幅方向の鉄損の変動は製造される変圧器の特性にばらつきを生じる。従って、上記した間隔D2および間隔D3は10mm以上100mm以下にすることが望ましい。
2、3 歪導入部
P 交点
Claims (3)
- 方向性電磁鋼板の表裏面の各々に、該鋼板の圧延方向を横切る向きに延びる、線状の歪み導入部の複数本を前記圧延方向へ間隔を置いて有し、前記鋼板の表面と裏面との間において、前記歪み導入部が相互に交差する配置を有する方向性電磁鋼板。
- 前記歪み導入部の交差配置は、各歪み導入部上における隣接する交点の間隔が10mm以上100mm以下である請求項1に記載の方向性電磁鋼板。
- 前記歪み導入部の交差配置における交差角が1〜30°である請求項1または2に記載の方向性電磁鋼板。
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4079878A4 (en) * | 2019-12-19 | 2023-05-24 | Posco | CORNORATED ELECTROSTEEL SHEET AND METHOD OF REFINING THE MAGNETIC DOMAIN OF THE SAME |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56105424A (en) * | 1980-01-25 | 1981-08-21 | Nippon Steel Corp | Directional magnetic steel plate with excellent magnetic property |
JPH07320922A (ja) * | 1994-03-31 | 1995-12-08 | Kawasaki Steel Corp | 鉄損の低い一方向性電磁鋼板 |
JP2000109961A (ja) * | 1998-10-06 | 2000-04-18 | Nippon Steel Corp | 磁気特性の優れた一方向性電磁鋼板とその製造方法 |
KR20090093487A (ko) * | 2008-02-29 | 2009-09-02 | (주)제이씨빅툴즈 | 영구 미세자구 형성장치, 그를 이용한 저철손 방향성전기강판 제조방법 및 저철손 방향성 전기강판 |
CN107502723A (zh) * | 2017-09-15 | 2017-12-22 | 武汉钢铁有限公司 | 通过激光双面刻痕降低取向硅钢铁损的方法 |
JP2019137883A (ja) * | 2018-02-08 | 2019-08-22 | 日本製鉄株式会社 | 方向性電磁鋼板、および方向性電磁鋼板の製造方法 |
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- 2018-03-07 JP JP2018041109A patent/JP6904281B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56105424A (en) * | 1980-01-25 | 1981-08-21 | Nippon Steel Corp | Directional magnetic steel plate with excellent magnetic property |
JPH07320922A (ja) * | 1994-03-31 | 1995-12-08 | Kawasaki Steel Corp | 鉄損の低い一方向性電磁鋼板 |
JP2000109961A (ja) * | 1998-10-06 | 2000-04-18 | Nippon Steel Corp | 磁気特性の優れた一方向性電磁鋼板とその製造方法 |
KR20090093487A (ko) * | 2008-02-29 | 2009-09-02 | (주)제이씨빅툴즈 | 영구 미세자구 형성장치, 그를 이용한 저철손 방향성전기강판 제조방법 및 저철손 방향성 전기강판 |
CN107502723A (zh) * | 2017-09-15 | 2017-12-22 | 武汉钢铁有限公司 | 通过激光双面刻痕降低取向硅钢铁损的方法 |
JP2019137883A (ja) * | 2018-02-08 | 2019-08-22 | 日本製鉄株式会社 | 方向性電磁鋼板、および方向性電磁鋼板の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4079878A4 (en) * | 2019-12-19 | 2023-05-24 | Posco | CORNORATED ELECTROSTEEL SHEET AND METHOD OF REFINING THE MAGNETIC DOMAIN OF THE SAME |
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