DE471309C - Magnetic sheet with an insulating cover made of hardening material such as linseed oil, synthetic resin or the like, especially for electrical equipment - Google Patents

Magnetic sheet with an insulating cover made of hardening material such as linseed oil, synthetic resin or the like, especially for electrical equipment

Info

Publication number
DE471309C
DE471309C DEA47246D DEA0047246D DE471309C DE 471309 C DE471309 C DE 471309C DE A47246 D DEA47246 D DE A47246D DE A0047246 D DEA0047246 D DE A0047246D DE 471309 C DE471309 C DE 471309C
Authority
DE
Germany
Prior art keywords
magnetic sheet
synthetic resin
linseed oil
hardening material
electrical equipment
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
Application number
DEA47246D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE471309C publication Critical patent/DE471309C/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Insulating Bodies (AREA)

Description

Magnetblech mit einem isolierenden Überzug aus erhärtendem Material, wie Leinöl, Kunstharz o. dgl., insbesondere für elektrische Apparate L m dieWirbelstromverluste in den Kernen von elektrischen Apparaten. z. B. von Transformatoren, Elektromotoren usw., herabzusetzen, hat man dieKerne lamelliert und jedes einzelne Blech mit Isolationsmaterial überzogen. Als 'Material für einen derartigen Schutzüberzug. der durch Spritzen oder Walzen hergestellt wird. verwendet man bekanntlich Gummi oder harzartige Stoffe, beispielsweise auch Kondensationsharze.Magnetic sheet with an insulating coating made of hardening material, such as linseed oil, synthetic resin or the like, especially for electrical equipment L m die eddy current losses in the cores of electrical apparatus. z. B. transformers, electric motors etc., you have laminated the cores and each individual sheet with insulation material overdrawn. As a material for such a protective cover. the one by spraying or rolling. it is well known that rubber or resinous substances are used, for example also condensation resins.

Es hat sich nun herausgestellt. daß der isolierende Überzug bei dem großen Druck, mit dem die Bleche eines Kernes zusammengepreßt werden. zu fließen beginnt. Hierdurch wird der Isolationswert des Schutzüberzuges stark herabgesetzt.It has now turned out. that the insulating coating in the great pressure with which the sheets of a core are pressed together. to flow begins. This greatly reduces the insulation value of the protective coating.

Gemäß der Erfindung wird dieser Nachteil dadurch vermieden. das, man dem aus erhärtendem 'Material bestehenden isolierenden Schutzüberzug laus Leinöl. Kunstharz o. dglJ (ier 'ia-netbleche ein festes Isolationsmaterial in fein verteilter Form zusetzt. und zwar dient hierzu z. B. Porzellanerde (Kaolin). Kieselerde, Glimmer u. dgl. Die Menge der Zusätze aus festem Isolationsmaterial beträgt vorteilhaft etwa 2o°'.- Jer gesamten- Isolationsmasse. Bei Versuchen, die mit derartig behandelten Blechen vorgenommen worden sind, hat sich herausgestellt, daß die Wirbelstromverluste etwa nur halb so groß sind wie bei den bisher bekannten isolierenden Überzügen. Ferner ist der elektrische Widerstand eines Körpers aus Blechen mit dem Überzug gemäß der Erfindung etwa zehnmal so groß wie der eines Körpers aus Blechen mit einem der bekannten Überzüge ohne Beimengung von festen Isolationsmaterialien.According to the invention, this disadvantage is avoided. that, man The insulating protective coating made of hardening material is made of linseed oil. Synthetic resin or the like (ier 'ia-netbleche a solid insulation material in finely divided Form clogs. and that is used for this purpose, for. B. China clay (kaolin). Silica, mica and the like. The amount of solid insulation material additives is advantageous about 20 ° '.- Jer total insulation mass. In experiments with those treated in this way Sheets have been made, it has been found that the eddy current losses are only about half the size of the previously known insulating coatings. Furthermore, the electrical resistance of a body of sheet metal with the coating according to the invention about ten times as large as that of a body of sheet metal with a the known coatings without the addition of solid insulation materials.

Claims (1)

PATENTANSPRÜCHE: i. Magnetblech mit einem isolierenden Überzug aus erhärtendem Material, wie Leinöl, Kunstharz o. dgl., insbesondere für elektrische Apparate, dadurch gekennzeichnet, daß dem erhärtenden Material ein festes Isolationsmaterial, z. B. Porzellanerde, Kieselerde, Glimmer usw., in fein verteiltem Zustand zugesetzt ist. a. Magnetblech nach Anspruch i, dadurch gekennzeichnet, daß die Zusätze aus festem Material etwa 2001" der gesamten Isolationsmasse betragen.PATENT CLAIMS: i. Magnetic sheet with an insulating coating hardening material such as linseed oil, synthetic resin or the like, especially for electrical Apparatus, characterized in that the hardening material is a solid insulation material, z. B. china clay, silica, mica, etc., added in a finely divided state is. a. Magnetic sheet according to claim i, characterized in that the additives consist of solid material should be about 2001 "of the total insulation mass.
DEA47246D 1925-03-12 1926-03-13 Magnetic sheet with an insulating cover made of hardening material such as linseed oil, synthetic resin or the like, especially for electrical equipment Expired DE471309C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US471309XA 1925-03-12 1925-03-12

Publications (1)

Publication Number Publication Date
DE471309C true DE471309C (en) 1929-02-15

Family

ID=21947228

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA47246D Expired DE471309C (en) 1925-03-12 1926-03-13 Magnetic sheet with an insulating cover made of hardening material such as linseed oil, synthetic resin or the like, especially for electrical equipment

Country Status (1)

Country Link
DE (1) DE471309C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194517B (en) * 1958-05-23 1965-06-10 Honeywell Regulator Co Magnetic core layered from ferromagnetic sheets, the sheets of which are connected to one another by a binding agent with embedded filler between them, and process for its production
DE1218051B (en) * 1963-05-06 1966-06-02 Liebknecht Transformat Insulation of the sheets for the sheet metal stacks of electrical machines, preferably for transformers that are processed with high pressures
DE3012320A1 (en) * 1980-03-29 1981-10-08 Forschungsinstitut Prof. Dr.-Ing.habil., Dr.phil.nat. Karl Otto Lehmann, Nachf. GmbH & Cie, 7570 Baden-Baden Laminated cores for inductive components - where laminations are sepd. from each other by silica grains to form gaps filled with casting resin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194517B (en) * 1958-05-23 1965-06-10 Honeywell Regulator Co Magnetic core layered from ferromagnetic sheets, the sheets of which are connected to one another by a binding agent with embedded filler between them, and process for its production
DE1218051B (en) * 1963-05-06 1966-06-02 Liebknecht Transformat Insulation of the sheets for the sheet metal stacks of electrical machines, preferably for transformers that are processed with high pressures
DE3012320A1 (en) * 1980-03-29 1981-10-08 Forschungsinstitut Prof. Dr.-Ing.habil., Dr.phil.nat. Karl Otto Lehmann, Nachf. GmbH & Cie, 7570 Baden-Baden Laminated cores for inductive components - where laminations are sepd. from each other by silica grains to form gaps filled with casting resin

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