JPS59229419A - Improvement of iron loss characteristic of grain-oriented electrical steel sheet - Google Patents
Improvement of iron loss characteristic of grain-oriented electrical steel sheetInfo
- Publication number
- JPS59229419A JPS59229419A JP58104618A JP10461883A JPS59229419A JP S59229419 A JPS59229419 A JP S59229419A JP 58104618 A JP58104618 A JP 58104618A JP 10461883 A JP10461883 A JP 10461883A JP S59229419 A JPS59229419 A JP S59229419A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- grain
- oriented electrical
- electrical steel
- iron loss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は変圧器あるいは発電機、電動機等の回転機器等
の鉄心用として用いられる方向性電磁鋼板の鉄損特性を
改善する方法に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a method for improving the iron loss characteristics of grain-oriented electrical steel sheets used as cores of rotating equipment such as transformers, generators, and electric motors. be.
（従来技術）
従来、方向性電磁鋼板の鉄損の改善をはかるため、例え
ば特公昭５０−３５６７９号公報に示されているように
鋼板の表面を鋤いたり、あるいはひっかいたシする部分
可塑成形によって個々の結晶粒子の部分構造を変化させ
る方法あるいは特公昭５７−５９６８号公報に示されて
いるように鋼板の表面に抑圧によ多線状の微小歪を与え
る方法等が提案されている。また本発明者等も仕上焼鈍
漬方向性電磁鋼板の表面にレーザー光を照射して照射痕
を形成させ、その際の衝撃反力によって鋼板に何等の形
状変化を与えること表く局部的に高転位密度領域を形成
させるととによシ鉄損特性を向上させる技術を提案した
（特公昭５７−２２５２号公報参照）。この方法は鉄損
の改善に対して極めて有効な手段であるが、本発明者等
はさらに検討を進めた結果、前記のような従来技術とは
全く異る原理に基づく鉄損改善方法を発明した。(Prior art) Conventionally, in order to improve the iron loss of grain-oriented electrical steel sheets, partial plastic forming by plowing or scratching the surface of the steel sheet was used, for example, as shown in Japanese Patent Publication No. 50-35679. A method of changing the partial structure of individual crystal grains, or a method of applying multilinear minute strain to the surface of a steel sheet by compression, as shown in Japanese Patent Publication No. 57-5968, has been proposed. In addition, the present inventors irradiated the surface of a grain-oriented electrical steel sheet with finish annealing to form irradiation marks, and the impact reaction force at that time caused some shape changes to the steel sheet. We proposed a technique for improving iron loss characteristics by forming dislocation density regions (see Japanese Patent Publication No. 57-2252). This method is an extremely effective means for improving iron loss, but as a result of further investigation, the present inventors invented a method for improving iron loss based on a completely different principle from the prior art as described above. did.
（発明の目的）
本発明は前記のように方向性電磁鋼板の鉄損特性を改善
するための方法に関するもので、仕上焼鈍済の方向性電
磁鋼板の表面に局部的に加熱冷却サイクルを加えること
により熱歪領域を形成させることを特徴とするものであ
る。(Object of the Invention) As described above, the present invention relates to a method for improving the iron loss characteristics of a grain-oriented electrical steel sheet, which involves locally applying a heating and cooling cycle to the surface of a grain-oriented electrical steel sheet that has been finish annealed. This is characterized by forming a thermally strained region.
以下図面によシ本発明の詳細な説明する。The present invention will be explained in detail below with reference to the drawings.
（発明の構成・作用）
第１図は本発明方法によシ方向性電磁鋼板の表面に熱歪
領域を形成させる場合の実例を示すもので、１は鋼板、
２は加熱部である。また第２図は鋼板の表面に熱歪領域
を形成させるためのエネルギー源としてレーザー光を使
用する場合を示す説明図で３はレーザー発振装置、４は
レーザー光、５はレーザー光を鋼板表面に走査するため
の走査機構で、例えば多面回転ミラーからなる回転型走
査機構あるいはガルバノミラ−による振動型走査機構等
を用いることができる。６は集光光学系で、例えばＦ・
θレンズあるいはＦ・θミラーが適している。(Structure and operation of the invention) FIG. 1 shows an example of forming a thermally strained region on the surface of a grain-oriented electrical steel sheet by the method of the present invention.
2 is a heating section. Figure 2 is an explanatory diagram showing the case where laser light is used as an energy source to form a thermally strained region on the surface of a steel plate. 3 is a laser oscillation device, 4 is a laser beam, and 5 is a laser beam applied to the surface of a steel plate. As a scanning mechanism for scanning, for example, a rotary scanning mechanism including a multi-faceted rotating mirror or a vibrating scanning mechanism using a galvanometer mirror can be used. 6 is a condensing optical system, for example F.
A θ lens or an F/θ mirror is suitable.
本発明方法を、エネルギー源としてレーザー光を用いて
実施する場合について説明する。レーザー発振装置３か
らレーザー光４を走査機構５により鋼板１の全幅にわた
ってτ１１１１１／＠＠６の速度で走査するようにし、
さらに集光光学系６によシ鋼板１の表面に■径ｄｗ＋の
大きさで集光させる。一方鋼板（帯）をレーザー光４の
照射間隔ｔが所定の距離になるように第１図矢印方向に
走行させる。このように鋼板１の表面に幅ｄｗ＋のレー
ザー光４を照射すると、該鋼板１０表面には、その全幅
にわたって加熱冷却サイクルによる熱歪領域が形成され
、これによシ鉄損特性が改善される。A case will be described in which the method of the present invention is implemented using laser light as an energy source. The laser beam 4 from the laser oscillation device 3 is scanned by the scanning mechanism 5 over the entire width of the steel plate 1 at a speed of τ11111/@@6,
Further, the condensing optical system 6 condenses the light onto the surface of the steel plate 1 with a diameter dw+. On the other hand, the steel plate (strip) is run in the direction of the arrow in FIG. 1 so that the irradiation interval t of the laser beam 4 is a predetermined distance. When the surface of the steel plate 1 is irradiated with the laser beam 4 having the width dw+ in this way, a thermal strain region is formed over the entire width of the surface of the steel plate 10 due to the heating and cooling cycle, thereby improving the iron loss characteristics. .
次に鋼板表面への加熱条件について説明する。Next, the conditions for heating the surface of the steel plate will be explained.
先ず加熱部２の幅（レーザー光のビーム径）ｄは１．５
■以下であることが望ましく、また加熱部２の間隔ｔは
２．５ｍ以上２５■以下であることが適当である。ｄが
１．５ ｗｇを超え、またｔが２．５ｍ未満になると、
熱歪部分が多くな多すぎて鋼板にそシを生じ形状性が悪
くなシ、またｔが２５調を超えると熱歪部が過少で効果
が少くなるからである。またある１点における被加熱時
間τは１×１０−７秒以上１秒以下であることが適当で
ある。First, the width d of the heating section 2 (beam diameter of the laser beam) is 1.5.
It is desirable that the spacing t between the heating parts 2 is 2.5 m or more and 25 m or less. When d exceeds 1.5 wg and t becomes less than 2.5 m,
This is because if there are too many thermally strained parts, the steel plate will warp and the shape will be poor, and if t exceeds 25, there will be too few thermally strained parts and the effect will be reduced. Further, it is appropriate that the heating time τ at one point is 1×10 −7 seconds or more and 1 second or less.
その理由は１０ 秒未満では必要とするノ４ワーが過大
となり、逆に１秒超では熱拡散のため昇温効果が少ない
からである。また加熱部２の圧延方向に対する角度θが
７０°〜１１００の部分が６０チ以上あることが必要で
ある。さらにレーザー発振装置をＥとし、Ｅ／五ｄ２を
Ｕ （Ｗａ ｔ ｔ、／ｍ２）と踵被加熱時間をτ（秒
）としたとき、ｗ＝ｔｒ、７７で与えられる値が、０．
５以上３０以下であることが好ましい、０．５未満では
効果が顕著ではなく３０を超えると入熱過剰となシ、そ
のため板ぞりが激しくなって実用に耐えなくなるからで
ある。０．５≦Ｗ≦３０であれば鉄損改善式はＷ１７１
５０で少なくともｏ、 ０２ ｗ／に９あ夛、かつ板ぞ
シも目視では検出できない程、軽微であった。The reason for this is that if the heating time is less than 10 seconds, the amount of heat required will be excessive, and if it exceeds 1 second, the heating effect will be small due to thermal diffusion. Further, it is necessary that there be 60 or more portions of the heating section 2 where the angle θ with respect to the rolling direction is 70° to 1100°. Further, when the laser oscillation device is E, E/5d2 is U (Wat t, /m2), and the heel heating time is τ (seconds), the value given by w=tr, 77 is 0.
A value of 5 or more and 30 or less is preferable; if it is less than 0.5, the effect will not be significant, and if it exceeds 30, excessive heat input will occur, resulting in severe board warping, making it unsuitable for practical use. If 0.5≦W≦30, the iron loss improvement formula is W171
The cracks were at least o at 50, 9 at 02 w/, and the cracks were so slight that they could not be detected visually.
（実施例） 次に本発明の実施例を示す。(Example) Next, examples of the present invention will be shown.
加熱エネルギー源として連続発振レーザー光を用い、仕
上焼純情、絶縁皮膜付方向性電磁鋼板の表面に第１表に
示す諸元でレーザー光を集光、走査することによシ鋼板
を局部的に急熱、放冷した。Using a continuous wave laser beam as a heating energy source, the steel plate is locally heated by concentrating and scanning the laser beam on the surface of the grain-oriented electrical steel sheet with an insulating coating and the specifications shown in Table 1. Rapid fever, left to cool.
処理前後の鉄損特性の変化および目視による残留熱歪（
板ぞり）を測定したところ第１表のとおりであった・
この結果から明らかなように鉄損特性が著しく改善され
ていることがわかる。Changes in iron loss characteristics before and after treatment and visual residual thermal strain (
The results are shown in Table 1. As is clear from these results, the iron loss characteristics have been significantly improved.
（発明の効果）
以上説明したように本発明によれば方向性電磁（５）
鋼板の鉄損特性の改善をはかることができ、しかも被加
熱部分の温度も極端に高温度にガらないので、絶縁剤等
の表面皮膜を被覆した鋼板に適用しても皮膜が損傷する
ことがない等実操業においても極めて有効である。(Effects of the Invention) As explained above, according to the present invention, it is possible to improve the iron loss characteristics of the directional electromagnetic (5) steel sheet, and the temperature of the heated portion does not rise to an extremely high temperature. It is also extremely effective in actual operation, as the coating will not be damaged even when applied to a steel plate coated with a surface coating such as an insulating agent.
（６）
また上記の説明においては加熱エネルギー源としてレー
ザー光を使用した場合について説明したがレーザー光に
限らず、電子ビーム、イオンビームあるいは赤外線等の
熱線を使用することも可能 ゛であることは勿論であ
る。(6) Furthermore, although the above explanation deals with the use of laser light as the heating energy source, it is possible to use not only laser light but also heat rays such as electron beams, ion beams, and infrared rays. Of course.
【図面の簡単な説明】
第１図は本発明の説明図、第２図は加熱エネルギー源と
してレーザー光を用いる場合を示す説明図である。
１：鋼板、２：熱歪部、３：レーザー発振装置、４：走
査機構、５：集光光学系
特許出願人 新日本製鐵株式会社
（８）
１０３−BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of the present invention, and FIG. 2 is an explanatory diagram showing the case where a laser beam is used as a heating energy source. 1: Steel plate, 2: Thermal strain section, 3: Laser oscillation device, 4: Scanning mechanism, 5: Focusing optical system Patent applicant Nippon Steel Corporation (8) 103-
Claims (1)
ギーを加えることにより熱歪領域を形成させることを特
徴とする方向性電磁鋼板の鉄損特性改善方法A method for improving iron loss characteristics of a grain-oriented electrical steel sheet, which comprises forming a thermal strain region by locally applying thermal energy to the surface of a grain-oriented electrical steel sheet that has been finish annealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58104618A JPS59229419A (en) | 1983-06-11 | 1983-06-11 | Improvement of iron loss characteristic of grain-oriented electrical steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58104618A JPS59229419A (en) | 1983-06-11 | 1983-06-11 | Improvement of iron loss characteristic of grain-oriented electrical steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59229419A true JPS59229419A (en) | 1984-12-22 |
Family
ID=14385427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58104618A Pending JPS59229419A (en) | 1983-06-11 | 1983-06-11 | Improvement of iron loss characteristic of grain-oriented electrical steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59229419A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62151518A (en) * | 1985-12-26 | 1987-07-06 | Kawasaki Steel Corp | Method for decreasing iron loss of grain oriented silicon steel sheet |
| JPS62151511A (en) * | 1985-12-26 | 1987-07-06 | Kawasaki Steel Corp | Method for decreasing iron loss of grain oriented silicon steel sheet |
| WO2009075328A1 (en) * | 2007-12-12 | 2009-06-18 | Nippon Steel Corporation | Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam application |
| WO2013100200A1 (en) * | 2011-12-28 | 2013-07-04 | Ｊｆｅスチール株式会社 | Oriented electromagnetic steel plate and manufacturing method therefor |
| WO2013099272A1 (en) * | 2011-12-28 | 2013-07-04 | Ｊｆｅスチール株式会社 | Oriented electromagnetic steel plate and manufacturing method therefor |
| CN104024455A (en) * | 2011-12-28 | 2014-09-03 | 杰富意钢铁株式会社 | Oriented electromagnetic steel plate and method for ameliorating iron losses therein |
| KR20140109409A (en) * | 2011-12-27 | 2014-09-15 | 제이에프이 스틸 가부시키가이샤 | Grain-oriented electrical steel sheet |
| DE102014206266A1 (en) * | 2014-04-02 | 2015-10-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of electrical sheets or elements of soft magnetic alloys |
| CN109622615A (en) * | 2018-11-23 | 2019-04-16 | 南京理工大学 | A kind of technique obtaining controllable soft or hard layer structure sheet metal using laser heating |
| CN116162765A (en) * | 2023-04-04 | 2023-05-26 | 浙江工业大学 | Bainite regulation and control method based on laser composite multistage electromagnetic induction |
-
1983
- 1983-06-11 JP JP58104618A patent/JPS59229419A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62151511A (en) * | 1985-12-26 | 1987-07-06 | Kawasaki Steel Corp | Method for decreasing iron loss of grain oriented silicon steel sheet |
| JPS62151518A (en) * | 1985-12-26 | 1987-07-06 | Kawasaki Steel Corp | Method for decreasing iron loss of grain oriented silicon steel sheet |
| WO2009075328A1 (en) * | 2007-12-12 | 2009-06-18 | Nippon Steel Corporation | Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam application |
| JP4669565B2 (en) * | 2007-12-12 | 2011-04-13 | 新日本製鐵株式会社 | Method for producing grain-oriented electrical steel sheet in which magnetic domain is controlled by laser light irradiation |
| US8277574B2 (en) | 2007-12-12 | 2012-10-02 | Nippon Steel Corporation | Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam irradiation |
| KR20140109409A (en) * | 2011-12-27 | 2014-09-15 | 제이에프이 스틸 가부시키가이샤 | Grain-oriented electrical steel sheet |
| US9646749B2 (en) | 2011-12-27 | 2017-05-09 | Jfe Steel Corporation | Grain-oriented electrical steel sheet |
| JPWO2013099272A1 (en) * | 2011-12-28 | 2015-04-30 | Ｊｆｅスチール株式会社 | Oriented electrical steel sheet and manufacturing method thereof |
| WO2013100200A1 (en) * | 2011-12-28 | 2013-07-04 | Ｊｆｅスチール株式会社 | Oriented electromagnetic steel plate and manufacturing method therefor |
| CN104024455A (en) * | 2011-12-28 | 2014-09-03 | 杰富意钢铁株式会社 | Oriented electromagnetic steel plate and method for ameliorating iron losses therein |
| JP2013139590A (en) * | 2011-12-28 | 2013-07-18 | Jfe Steel Corp | Oriented electromagnetic steel plate and manufacturing method thereof |
| US20140360629A1 (en) * | 2011-12-28 | 2014-12-11 | Jfe Steel Corporation | Grain-oriented electrical steel sheet and method of manufacturing the same |
| WO2013099272A1 (en) * | 2011-12-28 | 2013-07-04 | Ｊｆｅスチール株式会社 | Oriented electromagnetic steel plate and manufacturing method therefor |
| EP2799580A4 (en) * | 2011-12-28 | 2015-06-03 | Jfe Steel Corp | Grain-oriented electrical steel sheet and method for manufacturing same |
| CN107012303B (en) * | 2011-12-28 | 2020-01-24 | 杰富意钢铁株式会社 | Grain-oriented electromagnetic steel sheet and method for producing same |
| EP3037568A1 (en) * | 2011-12-28 | 2016-06-29 | JFE Steel Corporation | Grain-oriented electrical steel sheet and method for manufacturing the same |
| CN104024457A (en) * | 2011-12-28 | 2014-09-03 | 杰富意钢铁株式会社 | Oriented electromagnetic steel plate and manufacturing method therefor |
| CN107012303A (en) * | 2011-12-28 | 2017-08-04 | 杰富意钢铁株式会社 | Grain-oriented magnetic steel sheet and its manufacture method |
| US9984800B2 (en) | 2011-12-28 | 2018-05-29 | Jfe Steel Corporation | Grain-oriented electrical steel sheet and method of manufacturing same |
| US10062483B2 (en) | 2011-12-28 | 2018-08-28 | Jfe Steel Corporation | Grain-oriented electrical steel sheet and method for improving iron loss properties thereof |
| US10395806B2 (en) | 2011-12-28 | 2019-08-27 | Jfe Steel Corporation | Grain-oriented electrical steel sheet and method of manufacturing the same |
| DE102014206266A1 (en) * | 2014-04-02 | 2015-10-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of electrical sheets or elements of soft magnetic alloys |
| DE102014206266B4 (en) * | 2014-04-02 | 2020-03-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of elements from soft magnetic alloys |
| CN109622615A (en) * | 2018-11-23 | 2019-04-16 | 南京理工大学 | A kind of technique obtaining controllable soft or hard layer structure sheet metal using laser heating |
| CN116162765A (en) * | 2023-04-04 | 2023-05-26 | 浙江工业大学 | Bainite regulation and control method based on laser composite multistage electromagnetic induction |
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