DE715947C - Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer - Google Patents

Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer

Info

Publication number
DE715947C
DE715947C DEV35653D DEV0035653D DE715947C DE 715947 C DE715947 C DE 715947C DE V35653 D DEV35653 D DE V35653D DE V0035653 D DEV0035653 D DE V0035653D DE 715947 C DE715947 C DE 715947C
Authority
DE
Germany
Prior art keywords
aluminum oxide
oxide layer
individual
core composed
magnetic
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
DEV35653D
Other languages
German (de)
Inventor
Cesare Cippitelli
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.)
Voigt and Haeffner AG
Original Assignee
Voigt and Haeffner 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 Voigt and Haeffner AG filed Critical Voigt and Haeffner AG
Priority to DEV35653D priority Critical patent/DE715947C/en
Application granted granted Critical
Publication of DE715947C publication Critical patent/DE715947C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Laminated Bodies (AREA)

Description

Aus einzelnen mit einer Aluminiunöxydschicht überzogenen Magnetblechen zusammengesetzter Magnetkern Bei zusammengesetzten Magnetkernen werden mehrere Magnetbleche unter Zwischenfügung von Isolation übereinander angeordnet und mittels Nietbolzen zusammengehalten. Hierbei kann -die Isolation aus Papier oder. auch durch überziehen der Bleche mit .einer Isolierschicht; z. B. Aluminiumoxyd, bestehen. Solche Nietbefestigungen haben den Nachteil, daß während des Betriebs Wirbelströme entstehen, die :eine starke Erwärmung des Magnetkerns hervorrufen: Um diese Wirbelstrombildung zu vermeiden, wurde bereits vorgeschlagen, die einzelnen Magnetbleche ohne Verwendung von Nieten durch seine Uminantelung aus Isoliermaterial zusammenzuhalten. . Diese Ummantelung vergrößert aber den Magnetkern nicht unwesentlich.Made of individual magnetic sheets coated with an aluminum oxide layer Composite magnetic core With composite magnetic cores, several magnetic sheets are used Arranged one above the other with the interposition of insulation and by means of rivet bolts held together. Here, the insulation made of paper or. also by pulling it over the sheets with .einer insulating layer; z. B. aluminum oxide exist. Such rivet fastenings have the disadvantage that eddy currents arise during operation, which: a strong Induce heating of the magnetic core: To avoid this eddy current formation, it has already been proposed to use the individual magnetic sheets without the use of rivets hold together by its sheathing made of insulating material. . This sheath but does not enlarge the magnetic core insignificantly.

Um ohne Verwendung von Nieten oder einer Ummantelung die Bleche zusammenzuhalten, sind gemäß der Erfindung die einzelnen mit einer Aluminiumoxydsrhicht überzogenen Magnetbleche mit trichterförmigen Ausbeulungen versehen, die in entsprechende Öffnungen des nächsten anliegenden Eisenbleches passen und deren überragender Rand umgebördelt ist. Auf diese Weise sind sämtliche Bleche ohne Nietbolzen fest miteinander verbunden. Wirbelströme können nicht auftreten. Die Verwendung von Eisenblechen, die mit einer Aluminiumoxydschicht überzogen sind; hat den besonderen Vorteil; daß trotz Umbördeln die Isolatiönsschicht die erforderliche Festigkeit beibehält und so eine zuverlässige Wirbelstromisolierung ermöglicht wird.To hold the sheets together without using rivets or a sheathing, are, according to the invention, the individual coated with an aluminum oxide layer Magnetic sheets are provided with funnel-shaped bulges that fit into corresponding openings of the next adjacent sheet of iron fit and their protruding edge flanged is. In this way, all metal sheets are firmly connected to one another without rivet bolts. Eddy currents cannot occur. The use of iron sheets that come with a Are coated with aluminum oxide; has the particular advantage; that despite flanging the Isolatiönsschicht retains the required strength and thus a reliable one Eddy current isolation is made possible.

Die Zeichnung .zeigt ein. -Ausführungsbeispiel. der Erfindung in verschiedenen Ansichten. Die- Magnetbleche a sind an ihrer einen Selbe trichterförmig ausgebeult, und zwar vorzugsweise in Form einer Hülse b. Das nächstanliagende Blech c - hat eine Öffnung,d, in die die trichterförmig ausgebildeten Bleche eingesetzt sind, Der überragende Teil der trichterförmig ausgebildeten Bleche wird umgebördelt. Die einzelnen Bleche sind mit einer Aluminiumoxydschicht überzogen. Die Abb.3 zeigt die Zusammensetzung der einzelnen Bleche zu einem Magnetsystem.The drawing shows a. -Example. of the invention in different Views. The magnetic sheets a are bulged in a funnel shape on one of them, and preferably in the form of a sleeve b. The next adjacent sheet c - has an opening, d, into which the funnel-shaped sheets are inserted, The protruding part of the funnel-shaped metal sheets is flanged. the individual sheets are coated with an aluminum oxide layer. Figure 3 shows the composition of the individual sheets to form a magnet system.

Claims (1)

PATENTANSPRUCH: Aus einzelnen mit einer Aluminiumoxydschicht überzogenen Magnetblechen zusammengesetzter Magnetkern, dadurch gekennzeichnet, daß- die einzelnen Magnetbleche mit trichterförmigen Ausbeulungen versehen sind, die in entsprechende öffn.ungen des nächstanliegenden Eisenblechs passen und deren überragender Rand umgebördelt ist.PATENT CLAIM: Made of individual pieces coated with an aluminum oxide layer Magnetic core composed of magnetic sheets, characterized in that the individual Magnetic sheets are provided with funnel-shaped bulges, which are in corresponding Openings of the closest iron sheet fit and their protruding edge is beaded.
DEV35653D 1939-02-12 1939-02-12 Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer Expired DE715947C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV35653D DE715947C (en) 1939-02-12 1939-02-12 Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV35653D DE715947C (en) 1939-02-12 1939-02-12 Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer

Publications (1)

Publication Number Publication Date
DE715947C true DE715947C (en) 1942-01-09

Family

ID=7589884

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV35653D Expired DE715947C (en) 1939-02-12 1939-02-12 Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer

Country Status (1)

Country Link
DE (1) DE715947C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917626C (en) * 1952-02-03 1954-09-09 Siemens Ag Iron body made of layered sheet metal for electrical machines and devices
DE1161637B (en) * 1963-03-07 1964-01-23 Licentia Gmbh Layered pole wheel for electrical machines
DE3227681A1 (en) * 1982-07-24 1984-02-02 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR PRODUCING A LAMINATE PACKAGE FOR ANCHOR ELECTRICAL MACHINES
DE3408563A1 (en) * 1984-03-09 1985-09-19 Kienle & Spiess Stanz- und Druckgießwerk GmbH, 7123 Sachsenheim Stamped sheet part for the production of bundles of laminations for rotors, stators, magnet cores and the like
DE102012223318A1 (en) * 2012-12-17 2014-06-18 Voith Patent Gmbh Stator with laminated core of an electrical machine and method of construction

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917626C (en) * 1952-02-03 1954-09-09 Siemens Ag Iron body made of layered sheet metal for electrical machines and devices
DE1161637B (en) * 1963-03-07 1964-01-23 Licentia Gmbh Layered pole wheel for electrical machines
DE3227681A1 (en) * 1982-07-24 1984-02-02 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR PRODUCING A LAMINATE PACKAGE FOR ANCHOR ELECTRICAL MACHINES
DE3408563A1 (en) * 1984-03-09 1985-09-19 Kienle & Spiess Stanz- und Druckgießwerk GmbH, 7123 Sachsenheim Stamped sheet part for the production of bundles of laminations for rotors, stators, magnet cores and the like
DE102012223318A1 (en) * 2012-12-17 2014-06-18 Voith Patent Gmbh Stator with laminated core of an electrical machine and method of construction

Similar Documents

Publication Publication Date Title
DE715947C (en) Magnetic core composed of individual magnetic sheets coated with an aluminum oxide layer
CH372879A (en) Flexible wire shaft
DE710983C (en) Iron core for electrical apparatus, in particular converters and measuring instruments, which is composed of more than three sheets of different permeability arranged parallel to the flow direction, preferably sheets of silicon steel and sheets of higher permeability
CH240899A (en) High frequency coil.
DE2024522A1 (en) Transformer, transducer or the gletchen
DE414386C (en) Groove lock for electrical machines with separating joints running in the longitudinal direction of the groove between magnetically conductive layers
DE1056251B (en) Insulation of the laminated core of electrical machines
DE181457C (en)
DE898173C (en) Device for generating high inductions in magnetic cores of electrical apparatus, in particular transformers and chokes
DE599955C (en) Magnetic core without sheet metal joint, especially converter core
DE489952C (en) Core sheets made of dynamo sheet, especially for transformers
DE527562C (en) Sheet metal body for electrical machines, which is arranged in a stand housing and is composed of segmented sheet metal stacks
DE528164C (en) Choke coil with a bare conductor wound on a sheet metal jacket
DE1247468B (en) Three-legged or multi-legged core made of grain-oriented sheet metal for transformers, inductors or the like. Electrical induction devices
DE568303C (en) Transmitters, relay coils or the like with several pairs of symmetrical windings
DE742657C (en) Process for manufacturing electrical inductors
DE396566C (en) Process for the production of helically stranded cables with a D-shaped or rectangular cross-section
DE722800C (en) Transverse hole current transformer
DE586821C (en) Coil for induction ovens
DE424237C (en) Method of making a telephone magnet system
DE727282C (en) Rectangular bobbin
DE702142C (en) Magnetic core made of wires, strips or sheets that are electrically isolated from one another
DE472131C (en) Drive iron body for induction measuring devices
DE1659129B1 (en) Concrete reinforcement and beam provided with it
DE2000539C3 (en) Process for the manufacture of coils and a set of coils manufactured according to this process