JPH01232705A - Electromagnetic steel plate for laminated iron core, and laminated iron core - Google Patents
Electromagnetic steel plate for laminated iron core, and laminated iron coreInfo
- Publication number
- JPH01232705A JPH01232705A JP63059141A JP5914188A JPH01232705A JP H01232705 A JPH01232705 A JP H01232705A JP 63059141 A JP63059141 A JP 63059141A JP 5914188 A JP5914188 A JP 5914188A JP H01232705 A JPH01232705 A JP H01232705A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- roughness
- laminated iron
- iron core
- rough
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims abstract 2
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 2
- 238000004080 punching Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000003746 surface roughness Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 5
- 238000013022 venting Methods 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229910000576 Laminated steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electromagnetic steel sheet for a 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、そのエツ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ツジ部
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。Laminated iron cores for motors and the like are manufactured by punching out a large number of electromagnetic steel plates, stacking them together, and welding the edges. In the manufacture of such laminated iron cores, punchability and weldability of the steel plate are issues. In other words, when punching an electromagnetic steel plate with a punching die, it is necessary to punch out as much of the steel plate as possible in one die polishing, that is, it is required to have excellent punching properties, and when welding the edges of laminated steel plates. , it is required that welding can be performed at high speed without causing defects such as blowholes in the welded part.
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ツ
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 these, punching properties can be significantly improved by using an organic insulating film on the surface of the steel sheet. However, when welding the above-mentioned edges, such an organic film decomposes and gasifies due to the heat, and this gas enters the weld bead and causes blowholes in the weld, reducing 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２０８μｍｓ
μ１ｎｃｈ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は用の空
隙（通路）を形成し。To address this problem, Japanese Patent Publication No. 49-6744 has been proposed. This electromagnetic steel sheet has 208μms on the surface of the steel sheet.
This steel plate has a roughness of 1 nch or more and has an organic film formed thereon, and the surface roughness of the steel sheet forms voids (passages) for gas venting.
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。By dissipating the decomposed gas generated during welding through this gap, the gas is prevented from entering the weld bead.
しかし、この電磁鋼板には次のような問題がある。 However, this electrical 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。(a) When the surface of an electromagnetic steel sheet is roughened, the movement of domain walls is obstructed, magnetic permeability decreases, and low-field characteristics deteriorate.
（０） １１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、ガス抜は用の空隙（６）を期待するほど
有効に確保できない。(0) Even if the surface of the 11 plates is roughened, when the steel plates are stacked, the surface unevenness of the adjacent steel plates (5) will interlock with each other as shown in Figure 5, and the gaps (6) will be used for gas release. It cannot be secured as effectively as expected.
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 was made in view of such conventional problems,
It is an object of the present invention to provide an electromagnetic steel sheet for a laminated iron core that has excellent punchability and weldability and can also ensure sufficient magnetic properties, 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、−方の面が粗
さＲｚ ２μ〜２０μの粗面に構成されるとともに、他
方の面が粗さＲｚ ２μ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, in the electromagnetic steel sheet for laminated iron core of the present invention, the - side is configured as a rough surface with a roughness Rz of 2μ to 20μ, and the other side is configured as a smooth surface with a roughness Rz of less than 2μ, and Its feature is that an insulating film containing an organic substance is formed on both surfaces or either one of the surfaces.
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。In addition, the laminated iron core of the present invention includes a punched material of the above-mentioned electromagnetic steel sheet,
The feature is that a plurality of adjacent punched materials are stacked so that the rough and smooth surfaces overlap.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明の電磁鋼板は、片面が粗さＲｚ ２μ〜２０μの
粗面に、また他の片面が粗さＲｚ ２μ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は用の空隙（４）
を確保するものである。The electromagnetic steel sheet of the present invention has one side having a rough surface with a roughness Rz of 2μ to 20μ, and the other side having a smooth surface with a roughness Rz of less than 2μ. When such a steel plate is made into a laminated iron core, as shown in Fig. 1 (schematic diagram), adjacent steel plates (1) (
The rough surface (2) and smooth surface (3) are stacked so that they overlap between the punched materials), thereby creating a gap (4) for gas release.
This is to ensure that
粗面側については、その粗さがＲｚ ２μ未満であると
、ガス抜は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Ｒｚ ２０μ以下（好ましく
は１０μ以下）とする。Regarding the rough side, if the roughness is less than Rz 2μ, voids for gas venting cannot be formed appropriately, so the roughness needs to be Rz 2μ or more (preferably 5μ or more). On the other hand, as the roughness increases, the space factor decreases and the magnetic properties deteriorate, so the roughness is set to Rz 20μ or less (preferably 10μ or less).
また平滑面側については、その粗さがＲｚ ２μ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、ガス抜は用の空隙が適切に形成されなく
なる。このため、粗さはＲｚ ２μ未満とする必要かあ
る。Furthermore, if the roughness of the smooth surface side is Rz 2μ or more, when laminated, the unevenness of the surface will mesh with the rough surface of the adjacent steel plate, and voids for gas venting will not be properly formed. Therefore, it is necessary to set the roughness to less than Rz 2μ.
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。An insulating film containing an organic substance is formed on either or both surfaces of the steel sheet whose surface roughness has been adjusted in this manner. Examples of this insulating film include: (1) an organic film, (2) a mixed film of organic and inorganic materials, and (2) a laminated film of an organic film and an inorganic film.
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：Ｒｚ ２μ、片面：Ｒｚ１２μ）の
低磁場特性を両面とも粗面である鋼板（Ｒｚ １２μ）
及び両面とも平滑面（Ｒｚ ２μ未満）である鋼板と比
較して示したもので１両面とも粗面である鋼板に較へ１
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。The electromagnetic steel sheet of the present invention has improved low magnetic field characteristics because it has only one rough surface that hinders domain wall movement, compared to conventional electromagnetic steel sheets that have rough surfaces on both sides. Figure 2 shows the low magnetic field characteristics of the steel plate of the present invention (one side: Rz 2μ, one side: Rz 12μ) and the steel plate with rough surfaces on both sides (Rz 12μ).
and a steel plate with smooth surfaces on both sides (Rz less than 2 μ), compared to a steel plate with rough surfaces on both sides.
It can be seen that the magnetic properties of the steel sheet of the present invention are effectively improved.
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
は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−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。Furthermore, when the steel sheets of the present invention are stacked, the rough surfaces and smooth surfaces of adjacent steel sheets overlap each other, so that a gap for degassing can be appropriately secured. Figure 3 qualitatively shows the degree of void formation when laminated with the steel plate of the present invention and a steel plate with the same roughness on both sides. A void can be appropriately formed. Further, in the steel sheet of the present invention, since the amount of voids is directly proportional to the roughness of the rough surface, it is easy to manage to obtain the optimum voids.
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、そのエツジ部を溶接することにより構成
される。The laminated iron core made of the above-mentioned electromagnetic steel sheets is made by inserting punched steel sheets into adjacent punched sheets (one
), the rough surface (2) and the smooth surface (3) are stacked so that they overlap, and the edges are welded.
Ｓｉ ： ０．４５ｗｔ％を含有し、片面の粗さがＲｚ
２μ未満で、且つ他の片面の粗さがＲ７，２μ〜Ｒｚ
２０μ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
、比較のため両面間−粗さの鋼板を製造し、同様の試験
を行った。Si: Contains 0.45wt%, the roughness of one side is Rz
Less than 2μ, and the other side has a roughness of R7.2μ to Rz
A variety of different steel plates were manufactured in the range of 20 μm, and a laminated iron core was manufactured from each of these steel plates in such a way that the rough and smooth surfaces of adjacent steel plates overlapped, and the occurrence of blowholes in the welded parts was investigated. The magnetic flux density of the steel plate was investigated. In addition, for comparison, a steel plate with a roughness between 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Ｍｇ
２Ｃｒｙ、の混合物で皮膜厚＝２μｍとした。In addition, the insulation coating of each of the above steel sheets is made of phenolic resin and Mg.
The film thickness was set to 2 μm using a mixture of 2Cry and 2Cry.
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。Figure 4 shows the results. In the steel plate of the present invention, the occurrence of blowholes is effectively suppressed by the appropriate formation of voids, and in addition, the deterioration of magnetic properties is also suppressed compared to steel plates with rough surfaces on both sides. It is being
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。According to the present invention as described above, (a) Compared to a conventional electromagnetic steel sheet that has rough surfaces on both sides, the low magnetic field characteristics can be improved because only one side has a rough surface that interferes with domain wall movement.
（０）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、ガス抜は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。(0) When stacking, by overlapping the rough and smooth surfaces between adjacent steel plates, gaps for gas venting are appropriately formed, and the occurrence of blowholes can be effectively prevented. C) Since the rough surface and the smooth surface are polymerized, the amount of voids is directly proportional to the roughness of the rough surface, which makes it easy to manage the voids.
Desired voids can be secured with high accuracy, and as a result, it is possible to obtain an electromagnetic steel sheet for a laminated iron core and a laminated iron core made from the same, which have excellent punchability and 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。
慎１図
第５図FIG. 1 is a schematic diagram showing a cross section of the electromagnetic steel sheet of the present invention and its laminated state. 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 effect of 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 blowhole generation and magnetic flux density of each steel plate in Examples. FIG. 5 is a schematic diagram 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. Shin 1 Figure 5
Claims (2)
されるとともに、他方の面が粗さＲｚ ２μ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 surface is configured as a rough surface with a roughness Rz of 2μ to 20μ, and the other surface is configured as a smooth surface with a roughness Rz of less than 2μ, and both or one of the surfaces contains an organic substance. An electrical steel sheet for laminated iron cores on which an insulating film is formed.
されるとともに、他方の面が粗さＲｚ ２μ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 surface is configured as a rough surface with a roughness Rz of 2μ to 20μ, and the other surface is configured as a smooth surface with a roughness Rz of less than 2μ, and both or one of the surfaces contains an organic substance. A laminated iron core made by laminating multiple punched electromagnetic steel sheets with an insulating film formed thereon so that the rough and smooth surfaces overlap between adjacent punches.
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 true JPH01232705A (en) | 1989-09-18 |
| JPH0642413B2 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 (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 |
| JP2011087386A (en) * | 2009-10-14 | 2011-04-28 | Mitsui High Tec Inc | Stacked stator core and manufacturing method therefor |
| DE102012222410A1 (en) | 2011-12-16 | 2013-06-20 | Mitsubishi Electric Corp. | Stator core, manufacturing method thereof, and rotary electric machines using the stator core |
| CN105185532A (en) * | 2015-09-14 | 2015-12-23 | 广东新昇电业科技股份有限公司 | Reactor iron core structure with rough bonding surfaces and process method of reactor iron core structure |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023181024A (en) * | 2022-06-10 | 2023-12-21 | 株式会社日立製作所 | Manufacturing method for laminated core, laminated core, and rotating electric machine using laminated core |
Citations (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
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS496744A (en) * | 1972-05-04 | 1974-01-21 |
Cited By (7)
| 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 |
| JP2011087386A (en) * | 2009-10-14 | 2011-04-28 | Mitsui High Tec Inc | Stacked stator core and manufacturing method therefor |
| DE102012222410A1 (en) | 2011-12-16 | 2013-06-20 | Mitsubishi Electric Corp. | Stator core, manufacturing method thereof, and rotary electric machines using the stator core |
| FR2984631A1 (en) * | 2011-12-16 | 2013-06-21 | Mitsubishi Electric Corp | STATOR CORE, METHOD FOR MANUFACTURING SAME, AND ROTARY ELECTRIC MACHINE USING THE STATOR CORE |
| US8887377B2 (en) | 2011-12-16 | 2014-11-18 | Mitsubishi Electric Corporation | Method for manufacturing stator core |
| CN105185532A (en) * | 2015-09-14 | 2015-12-23 | 广东新昇电业科技股份有限公司 | Reactor iron core structure with rough bonding surfaces and process method of reactor iron core structure |
| 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 |
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| Publication number | Publication date |
|---|---|
| JPH0642413B2 (en) | 1994-06-01 |
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