WO2015079633A1 - 絶縁被膜付き電磁鋼板 - Google Patents
絶縁被膜付き電磁鋼板 Download PDFInfo
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- WO2015079633A1 WO2015079633A1 PCT/JP2014/005661 JP2014005661W WO2015079633A1 WO 2015079633 A1 WO2015079633 A1 WO 2015079633A1 JP 2014005661 W JP2014005661 W JP 2014005661W WO 2015079633 A1 WO2015079633 A1 WO 2015079633A1
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- Prior art keywords
- insulating coating
- steel sheet
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- adhesion
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- 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
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
- C21D8/1283—Application of a separating or insulating coating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14775—Fe-Si based alloys in the form of sheets
- H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
- H01F1/18—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating
Definitions
- strain-relief tempering is often performed at a temperature of about 700 to 800 ° C. Therefore, when performing post-processing strain relief annealing, the insulating coating is required to have heat resistance that can withstand the heat during strain relief annealing.
- Patent Document 2 discloses an insulating coating that does not contain a chromium compound and can improve the punchability.
- the insulating coating described in Patent Document 2 includes a resin and colloidal silica (alumina-containing silica).
- Patent Document 3 discloses an insulating coating comprising one or more of colloidal silica, alumina sol, and zirconia sol and containing a water-soluble or emulsion resin.
- Patent Document 4 discloses an insulating coating that does not contain a chromium compound, is mainly composed of phosphate, and contains a resin.
- Patent Documents 7 and 8 as a method for producing an iron core having end face insulation at a low temperature in a short time, Fe, Li, Na, K, Mg, Ca, Cr, Mn, Co, Ni, Cu, Zn , Y, Ti, Zr, Nb, B, Al, Ge, Sn, P, Sb, Bi, by introducing a siloxane bond network by introducing a metal or metalloid into the insulating film in the form of alkoxide or chloride A method of accelerating is described. However, Patent Documents 7 and 8 do not show specific contents in terms of accelerating the formation of a siloxane bond network in the examples, and show specific possibilities such as punchability and adhesion improvement. It has not been.
- Si compounds having a silicon atom-bonded alkoxy group and an epoxy group-containing organic group such as 3-glycidoxypropyltrimethoxysilane and 3-glycidoxypropylmethyldimethoxysilane, and 3-aminopropyltrimethoxysilane
- Si compounds having a silicon atom-bonded alkoxy group and an amino group-containing organic group such as N-2- (aminoethyl) -3-aminopropyltrimethoxysilane.
- the elution amount of Fe can be adjusted by the steel component of the electrical steel sheet, the pH of the treatment liquid for forming the insulating coating, the standing time until the treatment liquid is applied to the electrical steel sheet and baked. Specifically, the amount of Fe elution tends to decrease as the amount of Al component in the electrical steel sheet increases, and the amount of Fe elution tends to increase as the amount of Si component in the electrical steel sheet increases. When the pH is lowered, the Fe elution amount tends to increase, and when the treatment liquid is applied to the magnetic steel sheet and the time until baking is increased, the Fe elution amount tends to increase. With these adjustments, the Fe elution amount can be increased to increase the Fe amount contained in the insulating coating, or the Fe elution amount can be reduced to reduce the Fe amount contained in the insulating coating.
- the content of Fe in the insulating coating must be adjusted so that the ratio of Fe to Si in the insulating coating (Fe / Si) is in the range of 0.01 to 0.6.
- the reason why the film characteristics are improved when the ratio (Fe / Si) is in the above range is not clear, but is considered to be due to the high reactivity between the Si compound and Fe. That is, it is considered that an excellent insulating film is formed by bonding Si and Fe through O.
- the ratio (Fe / Si) is extremely small, it is considered that the adhesion is insufficient because the reaction that proceeds between the insulating coating and the surface of the electrical steel sheet is insufficient.
- the lubricant examples include polyolefin wax (for example, polyethylene wax), paraffin wax (for example, synthetic paraffin and natural paraffin), fluororesin wax (for example, polytetrafluoroethylene), fatty acid amide compound (for example, stearin). Acid amide, palmitic acid amide, etc.), metal soaps (eg, calcium stearate, lead stearate, etc.), metal sulfides (eg, molybdenum disulfide, tungsten disulfide, etc.), graphite, graphite fluoride, boron nitride, poly 1 type (s) or 2 or more types, such as alkylene glycol and alkali metal sulfate, can be used.
- polyethylene wax and PTFE (polytetrafluoroethylene) wax are particularly preferable.
- the insulating coating of the electrical steel sheet with the insulating coating of the present invention may contain both an organic resin and a lubricant.
- the content of the organic resin and the lubricant in the insulating film is the C conversion of the total amount of the organic resin and the lubricant relative to the total of the adhesion amount of Fe in terms of Fe 2 O 3 and the adhesion amount of Si in terms of SiO 2. It is preferable to adjust the adhesion amount ratio (C (organic resin + lubricant) / (Fe 2 O 3 + SiO 2 )) to be 0.05 to 0.8. Within this range, the effects of both the organic resin and the lubricant described above can be obtained.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Dispersion Chemistry (AREA)
- Electromagnetism (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
本発明で用いる電磁鋼板は、特定の電磁鋼板に限定されない。例えば、電磁鋼板として、一般的な成分組成の電磁鋼板を用いることができる。一般的な電磁鋼板が含有する成分としては、Si、Al等が挙げられる。また、電磁鋼板の残部は、Feおよび不可避的不純物からなる。通常、Siの含有量は0.05~7.0質量%の範囲にあり、Alの含有量は2.0質量%以下の範囲にある。
本発明の絶縁被膜付き電磁鋼板における絶縁被膜はSi及びFeを含む。また、絶縁被膜は有機樹脂等のその他の任意成分を含んでもよい。以下、絶縁被膜に含まれる成分を説明する。
絶縁被膜付き電磁鋼板に対して、15mmφスチールダイスを用いて、かえり高さが50μmに達するまで打ち抜きを行い、その打ち抜き数で評価した。評価基準は以下の通りであり、評価結果を表1に示した。
(判定基準)
◎:120万回以上
○:100万回以上、120万回未満
○-:70万回以上、100万回未満
△:30万回以上、70万回未満
×:30万回未満
<密着性>
絶縁被膜付き電磁鋼板の表面にセロハン粘着テープを貼り、φ10mm内曲げ後セロハン粘着テープを剥離し、被膜の残存状態を目視で観察して評価した。評価基準は以下の通りであり、評価結果を表1に示した。また、図1に比較例1~4、発明例1~7のモル比(Fe/Si)と密着性との関係を示した。
(判定基準)
◎:残存率 90%以上
○:残存率 60%以上、90%未満
△:残存率 30%以上、60%未満
×:残存率 30%未満
表1に示したとおり、本発明に従い得られた絶縁被膜付き電磁鋼板はいずれも、打抜き性および密着性に優れていた。
Claims (2)
- 電磁鋼板と、該電磁鋼板上に形成された絶縁被膜とを備え、
前記絶縁被膜はSi及びFeを含み、
前記絶縁被膜における、前記SiのSiO2換算での付着量が全付着量の50~99%であり、
前記絶縁被膜における、前記Feの含有量と前記Siの含有量との比(Fe/Si)がモル比で0.01~0.6であることを特徴とする絶縁被膜付き電磁鋼板。 - 前記絶縁被膜は有機樹脂および/または潤滑剤を含み、
前記絶縁被膜における、前記FeのFe2O3換算での付着量と前記SiのSiO2換算での付着量の合計に対する前記有機樹脂および/または潤滑剤のC換算での付着量の比(C(有機樹脂+潤滑剤)/(Fe2O3+SiO2))が0.05~0.8であることを特徴とする請求項1に記載の絶縁被膜付き電磁鋼板。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015518100A JP5780379B1 (ja) | 2013-11-28 | 2014-11-11 | 絶縁被膜付き電磁鋼板 |
US15/039,161 US10403417B2 (en) | 2013-11-28 | 2014-11-11 | Electrical steel sheet provided with insulating coating |
EP14866336.2A EP3075877B1 (en) | 2013-11-28 | 2014-11-11 | Electromagnetic steel sheet having insulating coating film attached thereto |
RU2016125633A RU2644487C2 (ru) | 2013-11-28 | 2014-11-11 | Электротехническая листовая сталь с изоляционным покрытием |
KR1020167016934A KR101811249B1 (ko) | 2013-11-28 | 2014-11-11 | 절연 피막 부착 전자 강판 |
CN201480065155.1A CN105793466B (zh) | 2013-11-28 | 2014-11-11 | 带绝缘膜的电磁钢板 |
US16/517,760 US11177052B2 (en) | 2013-11-28 | 2019-07-22 | Method of making an electrical steel sheet provided with insulating coating |
US17/493,900 US20220028576A1 (en) | 2013-11-28 | 2021-10-05 | Method of making an electrical steel sheet provided with insulating coating |
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JP2013246473 | 2013-11-28 | ||
JP2013-246473 | 2013-11-28 | ||
JP2014-133514 | 2014-06-30 | ||
JP2014133514 | 2014-06-30 |
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US15/039,161 A-371-Of-International US10403417B2 (en) | 2013-11-28 | 2014-11-11 | Electrical steel sheet provided with insulating coating |
US16/517,760 Division US11177052B2 (en) | 2013-11-28 | 2019-07-22 | Method of making an electrical steel sheet provided with insulating coating |
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US (3) | US10403417B2 (ja) |
EP (1) | EP3075877B1 (ja) |
JP (1) | JP5780379B1 (ja) |
KR (1) | KR101811249B1 (ja) |
CN (1) | CN105793466B (ja) |
RU (1) | RU2644487C2 (ja) |
TW (1) | TWI558848B (ja) |
WO (1) | WO2015079633A1 (ja) |
Cited By (1)
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JP2018021242A (ja) * | 2016-08-05 | 2018-02-08 | 新日鐵住金株式会社 | 無方向性電磁鋼板、無方向性電磁鋼板の製造方法及びモータコアの製造方法 |
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JP6350773B1 (ja) * | 2016-10-18 | 2018-07-04 | Jfeスチール株式会社 | 方向性電磁鋼板および方向性電磁鋼板の製造方法 |
CN110055382B (zh) * | 2019-05-10 | 2020-07-17 | 安徽长江紧固件有限责任公司 | 一种扭剪型螺柱的制造方法 |
JP7310880B2 (ja) * | 2019-12-09 | 2023-07-19 | 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 |
US11827961B2 (en) | 2020-12-18 | 2023-11-28 | Vacuumschmelze Gmbh & Co. Kg | FeCoV alloy and method for producing a strip from an FeCoV alloy |
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2014
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- 2014-11-11 US US15/039,161 patent/US10403417B2/en active Active
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EP3075877A4 (en) | 2017-01-04 |
US11177052B2 (en) | 2021-11-16 |
EP3075877B1 (en) | 2021-03-03 |
CN105793466B (zh) | 2018-06-08 |
JP5780379B1 (ja) | 2015-09-16 |
JPWO2015079633A1 (ja) | 2017-03-16 |
US20220028576A1 (en) | 2022-01-27 |
US20170162295A1 (en) | 2017-06-08 |
KR20160090863A (ko) | 2016-08-01 |
RU2644487C2 (ru) | 2018-02-12 |
KR101811249B1 (ko) | 2017-12-21 |
US10403417B2 (en) | 2019-09-03 |
CN105793466A (zh) | 2016-07-20 |
TWI558848B (zh) | 2016-11-21 |
RU2016125633A (ru) | 2018-01-10 |
EP3075877A1 (en) | 2016-10-05 |
TW201525193A (zh) | 2015-07-01 |
US20190348195A1 (en) | 2019-11-14 |
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