JPH0642413B2 - Magnetic steel sheet for laminated iron core and laminated iron core - Google Patents
Magnetic steel sheet for laminated iron core and laminated iron coreInfo
- Publication number
- JPH0642413B2 JPH0642413B2 JP63059141A JP5914188A JPH0642413B2 JP H0642413 B2 JPH0642413 B2 JP H0642413B2 JP 63059141 A JP63059141 A JP 63059141A JP 5914188 A JP5914188 A JP 5914188A JP H0642413 B2 JPH0642413 B2 JP H0642413B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- iron core
- laminated iron
- roughness
- laminated
- 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.)
- Expired - Lifetime
Links
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は積層鉄芯用電磁鋼板及び該鋼板による積層鉄芯
に関する。The present invention relates to an electromagnetic steel sheet for laminated iron core and a laminated iron core made of the steel sheet.
モータ等の積層鉄芯は、電磁鋼板を打ち抜いて多数枚積
層させ、そのエッジ部を溶接することにより製造され
る。このような積層鉄芯の製造においては、鋼板の打抜
き性と溶接性が問題となる。すなわち、電磁鋼板を打抜
きダイスで打ち抜く場合、１回のダイス研磨でできるだ
け多量に鋼板を打ち抜けること、すなわち打抜き性に優
れていることが要求され、また積層された鋼板のエッジ
部を溶接する際、溶接部にブローホール等の欠陥を生じ
させることなく高速で溶接できることが要求される。A laminated iron core for a motor or the like is manufactured by punching out electromagnetic steel sheets, laminating a large number of them, and welding the edge portions thereof. In the production of such a laminated iron core, punchability and weldability of steel sheets become a problem. That is, when punching an electromagnetic steel sheet with a punching die, it is required to punch through the steel sheet as much as possible in one die polishing, that is, it is necessary to have excellent punchability, and when welding the edge portions of laminated steel sheets. It is required that welding can be performed at high speed without causing defects such as blowholes in the welded portion.
これらのうち打抜き性については、鋼板表面の絶縁皮膜
に有機系のものを用いることにより著しく向上させるこ
とができる。しかし、このような有機系皮膜は上記エッ
ジ部の溶接の際、その熱で分解してガス化し、このガス
が溶接ビードに侵入して溶接部にブローホールを発生さ
せ、溶接性を低下させるという問題を生じさせる。Among them, the punching property can be remarkably improved by using an organic type insulating film on the surface of the steel sheet. However, such an organic film is decomposed and gasified by the heat at the time of welding of the edge portion, and this gas penetrates into the weld bead to generate a blowhole in the weld portion, which deteriorates the weldability. Cause problems.
このような問題に対し、特公昭４９−６７４４号が提案
されている。この電磁鋼板は、鋼板表面に20Hrmsμinch
以上の粗さを付与し、その上に有機系皮膜を形成したも
ので、鋼板表面粗さによってガス抜け用の空隙（通路）
を形成し、溶接時に生じる分解ガスをこの空隙から散逸
させることにより、ガスの溶接ビードへの侵入を防止す
るようにしたものである。Japanese Patent Publication No. 49-6744 has been proposed to solve this problem. This electromagnetic steel plate has 20Hrmsμinch on the steel plate surface.
The above-mentioned roughness is applied, and an organic film is formed on it, and voids (passages) for degassing due to the surface roughness of the steel plate.
Is formed and the decomposed gas generated at the time of welding is dissipated from this gap to prevent the gas from entering the welding bead.
しかし、この電磁鋼板には次のような問題がある。 However, this electromagnetic steel sheet has the following problems.
（イ）電磁鋼板の表面に粗さを与えると、磁壁の移動が
妨害され、透磁率が低下して低磁場特性が劣化する。(B) If the surface of the electromagnetic steel sheet is roughened, the movement of the domain wall is disturbed, the magnetic permeability is lowered, and the low magnetic field characteristic is deteriorated.
（ロ）鋼板の表面を粗くしても、鋼板を積層させた場
合、第５図に示すように隣合う鋼板(5)の表面凹凸部が
噛み合い、ガス抜け用の空隙(6)を期待するほど有効に
確保できない。(B) Even if the surface of the steel plate is roughened, when the steel plates are laminated, the surface irregularities of the adjacent steel plates (5) are engaged with each other as shown in FIG. 5, and a void (6) for gas release is expected. It cannot be secured as effectively.
本発明はこのような従来の問題に鑑みなされたもので、
打抜き性及び溶接性に優れ、しかも磁気特性も十分確保
することができる積層鉄芯用電磁鋼板及びこの電磁鋼板
による積層鉄芯を提供せんとするものである。The present invention has been made in view of such conventional problems,
It is intended to provide an electromagnetic steel sheet for laminated iron core, which is excellent in punching property and weldability and can sufficiently secure magnetic characteristics, and a laminated iron core made of this electromagnetic steel sheet.
このため本発明の積層鉄芯用電磁鋼板は、一方の面が粗
さRz２μ〜20μの粗面に構成されるとともに、他方の面
が粗さRz２μ未満の平滑面に構成され、且つ両面または
いずれか一方の面に有機質を含む絶縁皮膜が形成された
ことをその特徴とする。Therefore, the electromagnetic steel sheet for laminated iron core of the present invention is configured such that one surface is a rough surface having a roughness Rz of 2 μ to 20 μ and the other surface is a smooth surface having a roughness of less than Rz 2 μ, and both surfaces or either The feature is that an insulating film containing an organic substance is formed on one surface.
また本発明の積層鉄芯は、上記電磁鋼板の打抜き材を、
隣合う打抜き材間で、粗面と平滑面とが重なり合うよう
複数枚積層させたことをその特徴とする。The laminated iron core of the present invention is a punched material of the above electromagnetic steel plate,
The feature is that a plurality of sheets are laminated so that the rough surface and the smooth surface overlap between the adjacent punched materials.
以下、本発明の詳細を説明する。Hereinafter, the details of the present invention will be described.
本発明の電磁鋼板は、片面が粗さRz２μ〜20μの粗面
に、また他方の片面が粗さRz２μ未満の平滑面に構成さ
れる。このような鋼板は、積層鉄芯とした場合に第１図
（模式図）に示すように、隣合う鋼板(1)（打抜き材）
間で粗面(2)と平滑面(3)とが重なり合うよう積層させ、
これによってガス抜け用の空隙(4)を確保するものであ
る。The electromagnetic steel sheet of the present invention is configured such that one surface is a rough surface having a roughness Rz of 2 μ to 20 μ and the other surface is a smooth surface having a roughness of less than Rz 2 μ. When such a steel plate is a laminated iron core, as shown in Fig. 1 (schematic diagram), adjacent steel plates (1) (punching material)
Laminate so that the rough surface (2) and the smooth surface (3) overlap with each other,
This secures the void (4) for gas release.
粗面側については、その粗さがRz２μ未満であると、ガ
ス抜け用の空隙を適切に形成できず、このため粗さはRz
２μ以上（好ましくは５μ以上）とする必要がある。一
方、粗さが増すと占積率の低下により磁気特性が劣化
し、このため粗さはRz20μ以下（好ましくは10μ以下）
とする。On the rough surface side, if the roughness is less than Rz 2μ, it is not possible to properly form the voids for gas release, and therefore the roughness is Rz.
It is necessary to make it 2 μm or more (preferably 5 μm or more). On the other hand, if the roughness increases, the space factor decreases and the magnetic properties deteriorate, so the roughness is Rz 20μ or less (preferably 10μ or less).
And
また平滑面側については、その粗さがRz２μ以上である
と、積層された際、表面の凹凸が隣接する鋼板の粗面と
噛み合い、ガス抜け用の空隙が適切に形成されなくな
る。このため、粗さはRz２μ未満とする必要かある。On the smooth surface side, when the roughness is Rz 2 μm or more, when laminated, the unevenness of the surface meshes with the rough surface of the adjacent steel plate, and voids for gas release cannot be formed appropriately. Therefore, the roughness needs to be less than Rz2μ.
このように表面粗さが調整された鋼板の両面またはいず
れか一方の面に有機質を含む絶縁皮膜が形成される。こ
の絶縁皮膜としては、有機系皮膜、有機質と無機質
との混合皮膜、有機系皮膜と無機系皮膜との積層皮膜
等がある。Insulating films containing organic substances are formed on both surfaces or either surface of the steel sheet whose surface roughness is adjusted as described above. Examples of this insulating film include an organic film, a mixed film of an organic substance and an inorganic substance, a laminated film of an organic film and an inorganic film, and the like.
このような本発明の電磁鋼板は、両面を粗面に構成した
従来の電磁鋼板に較べ、磁壁移動の妨げとなる粗面が片
面だけであるため、低磁場特性が改善できる。第２図は
本発明鋼板（片面：Rz２μ、片面：Rz12μ）の低磁場特
性を両面とも粗面である鋼板（Rz12μ）及び両面とも平
滑面（Rz２μ未満）である鋼板と比較して示したもの
で、両面とも粗面である鋼板に較べ、本発明鋼板では磁
気特性が効果的に改善されていることが判る。Such a magnetic steel sheet of the present invention can improve the low magnetic field characteristics because only one rough surface prevents the domain wall from moving, as compared with the conventional magnetic steel sheet having both rough surfaces. FIG. 2 shows the low magnetic field characteristics of the steel sheet of the present invention (one side: Rz2μ, one side: Rz12μ) in comparison with a steel sheet with rough surfaces on both sides (Rz12μ) and a steel sheet with smooth surfaces on both sides (less than Rz2μ). It can be seen that the magnetic properties of the steel sheet of the present invention are effectively improved as compared with the steel sheet of which both surfaces are rough.
また、本発明鋼板では積層させる際、隣合う鋼板間で粗
面と平滑面が重なり合うようにすることにより、ガス抜
け用の空隙が適切に確保される。第３図は本発明鋼板及
び両面とも同一粗さの鋼板について、積層させた場合の
空隙の形成の程度を定性的に示すもので、本発明鋼板で
は両面とも粗面に構成した鋼板に較べ空隙を適切に形成
させることができる。また、本発明鋼板では、粗面の粗
さに空隙量が正比例するため、最適な空隙を得るための
管理が容易である。In addition, when the steel sheets of the present invention are laminated, the rough surface and the smooth surface are overlapped between the adjacent steel sheets, so that the voids for gas release are appropriately secured. FIG. 3 qualitatively shows the degree of formation of voids when laminated on a steel sheet of the present invention and a steel sheet of the same roughness on both sides. Can be appropriately formed. In addition, in the steel sheet of the present invention, the amount of voids is directly proportional to the roughness of the rough surface, and therefore management for obtaining the optimal voids is easy.
以上のような電磁鋼板を素材とする積層鉄芯は、鋼板の
打抜き材を、第１図に示すように隣合う打抜き材(1)間
で粗面(2)と平滑面(3)とが重なり合うよう複数枚積層さ
せ、そのエッジ部を溶接することにより構成される。In the laminated iron core made of the electromagnetic steel sheet as described above, the punching material of the steel sheet has a rough surface (2) and a smooth surface (3) between the adjacent punching materials (1) as shown in FIG. It is configured by laminating a plurality of sheets so as to overlap each other and welding the edge portions thereof.
Si：0.45wt％を含有し、片面の粗さがRz２μ未満で、且
つ他の片面の粗さがRz２μ〜Rz20μの範囲で種々の異な
る鋼板を製造し、これら各鋼板から、隣合う鋼板どうし
の粗面と平滑面が重なり合うようにして積層した積層鉄
芯を製作し、溶接部のブローホール発生状況、及び鋼板
の磁束密度を調べた。また、比較のため両面同一粗さの
鋼板を製造し、同様の試験を行った。Si: containing 0.45 wt%, one surface roughness is less than Rz2μ, and the other one surface roughness is manufactured in the range of Rz2μ ~ Rz20μ, and various different steel plates are produced. Laminated iron cores were manufactured by laminating the rough and smooth surfaces so that they overlap each other, and the occurrence of blowholes in the weld and the magnetic flux density of the steel sheet were investigated. For comparison, a steel sheet having the same roughness on both sides was manufactured and the same test was conducted.
なお、上記各鋼板の絶縁皮膜は、フェノール樹脂とMg2C
rO7の混合物で皮膜厚：２μｍとした。The insulating film on each of the above steel plates was made of phenol resin and Mg 2 C.
The mixture thickness of rO 7 was 2 μm.
第４図はその結果を示すもので、本発明鋼板では、空隙
の適切な形成によりブローホールの発生が効果的に抑え
られ、加えて、両面とも粗面の鋼板に較べ磁気特性の劣
化も抑えられている。FIG. 4 shows the results. In the steel sheet of the present invention, the formation of blowholes is effectively suppressed by proper formation of voids, and in addition, the deterioration of the magnetic properties is suppressed as compared with the steel sheet having rough surfaces on both sides. Has been.
以上述べた本発明によれば、 (イ)両面を粗面に構成した従来の電磁鋼板に較べ、磁壁
移動の妨げとなる粗面が片面だけであるため、低磁場特
性が改善でき、 (ロ)積層させる際、隣合う鋼板間で粗面と平滑面を重な
り合わせることにより、ガス抜け用の空隙が適切に形成
され、ブローホールの発生を効果的に防止することがで
き、 (ハ)粗面と平滑面とを重合させるため、粗面の粗さに空
隙量が正比例し、このため空隙の管理が容易であり、所
望の空隙を精度良く確保することができ、 これらにより、打抜き性及び溶接性に優れ、しかも磁気
特性も確保された積層鉄芯用電磁鋼板及びこれによる積
層鉄芯を得ることができる。According to the present invention described above, (a) the low magnetic field characteristics can be improved because only one surface is a rough surface that hinders the movement of the domain wall, as compared with a conventional electromagnetic steel sheet in which both surfaces are rough surfaces. ) When stacking, by overlapping the rough surface and the smooth surface between the adjacent steel sheets, voids for gas release can be appropriately formed, and blowholes can be effectively prevented. Since the surface and the smooth surface are polymerized, the amount of voids is directly proportional to the roughness of the rough surface, which facilitates the management of the voids and ensures the desired voids with high precision. It is possible to obtain a magnetic steel sheet for a laminated iron core and a laminated iron core made of the electromagnetic steel sheet, which have excellent weldability and also ensure magnetic properties.
第１図は本発明の電磁鋼板及びその積層状態の断面を示
す模式図である。第２図は本発明鋼板と比較鋼板の磁束
密度を比較して示したものである。第３図は本発明鋼板
及び比較鋼板について鋼板表面粗さが空隙形成の程度に
及ぼす影響を示すものである。第４図は実施例における
各鋼板のブローホールの発生の程度及び磁束密度を示す
ものである。第５図は従来の電磁鋼板及びその積層状態
の断面を示す模式図である。 図において、(1)は鋼板、(2)は粗面、(3)は平滑面、(4)
は空隙である。FIG. 1 is a schematic view showing a cross section of an electromagnetic steel sheet of the present invention and a laminated state thereof. FIG. 2 shows a comparison of the magnetic flux densities of the steel sheet of the present invention and the comparative steel sheet. FIG. 3 shows the influence of the steel plate surface roughness on the degree of void formation for the steel plate of the present invention and the comparative steel plate. FIG. 4 shows the degree of occurrence of blowholes and the magnetic flux density of each steel sheet in the examples. FIG. 5 is a schematic view showing a cross section of a conventional electromagnetic steel sheet and its laminated state. In the figure, (1) is a steel plate, (2) is a rough surface, (3) is a smooth surface, and (4)
Is a void.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２１Ｄ 9/46 Ｂ (72)発明者 田鍋 俊一 東京都千代田区丸の内１丁目１番２号 日 本鋼管株式会社内 (72)発明者 実川 正治 東京都千代田区丸の内１丁目１番２号 日 本鋼管株式会社内 (72)発明者 稲垣 淳一 東京都千代田区丸の内１丁目１番２号 日 本鋼管株式会社内 (56)参考文献 特開 昭54−134043（ＪＰ，Ａ)─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical display location C21D 9/46 B (72) Inventor Shunichi Tanabe 1-2 1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd. (72) Inventor, Shoji Sanagawa Marunouchi, 1-2, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Inventor, Junichi Inagaki 1-2, Marunouchi, Chiyoda-ku, Tokyo In-house (56) References JP 54-134043 (JP, A)
Claims (2)
されるとともに、他方の面が粗さRz２μ未満の平滑面に
構成され、且つ両面またはいずれか一方の面に有機質を
含む絶縁皮膜が形成されてなる積層鉄芯用電磁鋼板。1. One of the surfaces is a rough surface having a roughness Rz of 2 μ to 20 μ, the other surface is a smooth surface having a roughness of less than Rz 2 μ, and both surfaces or one of the surfaces contains an organic substance. A magnetic steel sheet for laminated iron cores having an insulating film formed thereon.
されるとともに、他方の面が粗さRz２μ未満の平滑面に
構成され、且つ両面またはいずれか一方の面に有機質を
含む絶縁皮膜が形成されてなる電磁鋼板の打抜き材を、
隣合う打抜き材間で、粗面と平滑面とが重なり合うよう
複数枚積層させてなる積層鉄芯。2. One of the surfaces is a rough surface having a roughness Rz of 2 μ to 20 μ, the other surface is a smooth surface having a roughness of less than Rz 2 μ, and both surfaces or one of the surfaces contains an organic substance. Punching material for electrical steel sheet with insulating film
A laminated iron core made by stacking multiple sheets so that the rough surface and the smooth surface overlap between adjacent punched materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63059141A JPH0642413B2 (en) | 1988-03-11 | 1988-03-11 | Magnetic steel sheet for laminated iron core and laminated iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63059141A JPH0642413B2 (en) | 1988-03-11 | 1988-03-11 | Magnetic steel sheet for laminated iron core and laminated iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01232705A JPH01232705A (en) | 1989-09-18 |
| JPH0642413B2 true JPH0642413B2 (en) | 1994-06-01 |
Family
ID=13104746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63059141A Expired - Lifetime JPH0642413B2 (en) | 1988-03-11 | 1988-03-11 | Magnetic steel sheet for laminated iron core and laminated iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0642413B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023238472A1 (en) * | 2022-06-10 | 2023-12-14 | 株式会社日立製作所 | Laminated iron core production method, laminated iron core, and rotating electrical machine using laminated iron core |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004140966A (en) * | 2002-10-21 | 2004-05-13 | Nissan Motor Co Ltd | Lamination structure of core for rotating electric machine |
| JP5596955B2 (en) * | 2009-10-14 | 2014-09-24 | 株式会社三井ハイテック | Stator laminated iron core and manufacturing method thereof |
| JP5383781B2 (en) | 2011-12-16 | 2014-01-08 | 三菱電機株式会社 | Stator core, method for manufacturing the same, and rotating electric machine using the stator core |
| CN105185532B (en) * | 2015-09-14 | 2017-12-15 | 广东新昇电业科技股份有限公司 | A kind of coarse reactor iron core structure of adhesive surface and its production method |
| CN115255707A (en) * | 2022-08-09 | 2022-11-01 | 首钢智新迁安电磁材料有限公司 | Processing method of non-oriented electrical steel stator core |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS496744A (en) * | 1972-05-04 | 1974-01-21 |
-
1988
- 1988-03-11 JP JP63059141A patent/JPH0642413B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023238472A1 (en) * | 2022-06-10 | 2023-12-14 | 株式会社日立製作所 | Laminated iron core production method, laminated iron core, and rotating electrical machine using laminated iron core |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01232705A (en) | 1989-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI709982B (en) | Then laminated iron core, its manufacturing method and rotating electric machine | |
| JPH0642413B2 (en) | Magnetic steel sheet for laminated iron core and laminated iron core | |
| JP2023018087A5 (en) | ||
| JPH0522885A (en) | Magnetic wedge for rotary electric machine | |
| JPS59210623A (en) | Magnetic core | |
| JPH0779042B2 (en) | Magnetic steel sheet for laminated iron core | |
| JP3799252B2 (en) | Manufacturing method of noise-suppressing laminated iron core | |
| CN110576656B (en) | Laminated body for iron core | |
| JP3530330B2 (en) | Manufacturing method of laminated iron core | |
| JP2020080629A (en) | Motor core | |
| JP2003282330A (en) | Adhesive-fixed laminated iron core and its manufacturing method | |
| JP2662337B2 (en) | Electromagnetic steel sheet for laminated iron core with excellent punchability and high-speed weldability | |
| JP2001295001A (en) | Nonoriented silicon steel sheet excellent in high frequency magnetic property and weldability | |
| JPH0365646B2 (en) | ||
| JP2742688B2 (en) | Electrical steel sheet with excellent automatic caulking | |
| KR100193776B1 (en) | MIG magnetic head and its manufacturing method | |
| JPH09293622A (en) | Magnetic shield of electric stationery equipment | |
| JPH07230926A (en) | Iron core-type reactor with magnetic gap | |
| JPH0435937A (en) | Magnetic composite parts | |
| JPH08339924A (en) | Reactor | |
| JPH0620836A (en) | Method of forming soft magnetic multilayer film | |
| JPS6117127B2 (en) | ||
| JPS5996852A (en) | Forming method for laminated core | |
| JPS60106349A (en) | Manufacture of core plate for rotary electric machine | |
| KR870002549A (en) | Double-sided thin film magnetic head and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080601 Year of fee payment: 14 |