DE559943C - Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes - Google Patents

Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes

Info

Publication number
DE559943C
DE559943C DEA55536D DEA0055536D DE559943C DE 559943 C DE559943 C DE 559943C DE A55536 D DEA55536 D DE A55536D DE A0055536 D DEA0055536 D DE A0055536D DE 559943 C DE559943 C DE 559943C
Authority
DE
Germany
Prior art keywords
powder
production
induction coils
mass
magnetizable
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
DEA55536D
Other languages
German (de)
Inventor
Dr Walther Ehlers
Fritz Falkenberg
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
Priority to DEA55536D priority Critical patent/DE559943C/en
Application granted granted Critical
Publication of DE559943C publication Critical patent/DE559943C/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
    • H01F1/20—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 particles, e.g. powder

Landscapes

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

Description

Verfahren zur Herstellung von Massekernen aus Pulver magnetisierbarer Stoffe für Induktionsspulen u. dgl., vorzugsweise für Fernsprechzwecke In dem.Hauptpatent 554217 ist ein Verfahren zur Herstellung von Massekernen aus Pulver magnetisierbarer Stoffe für Induktionsspulen u. dgl., vorzugsweise für Fernsprechzwecke, beschrieben, bei dem die zur Herstellung des Massekernes dienende, aus einem Gemisch von magnetisierbaretn Pulver und einem isolierenden Pulver bestehende Masse in einem Gefäß einem Schüttelprozeß solcher Stärke und Dauer unterworfen wird, daß die Teilchen ihre im fertigen Massekern vorhandene Lagerungsdichte erhalten.Process for the production of mass cores from powder magnetizable Substances for induction coils and the like, preferably for telephone purposes In dem.Hauptpatent 554217 is a process for the production of mass cores from powder magnetizable Substances for induction coils and the like, preferably for telephone purposes, described, in which the one used to manufacture the mass core is made from a mixture of magnetizable Powder and an insulating powder existing mass in a vessel a shaking process is subjected to such strength and duration that the particles are in the finished mass core Preserve the existing storage density.

Es hat sich nun herausgestellt, daß bei diesen geringen Drucken die Isolierschichten im Kernmaterial fortgelassen werden können, ohne daß hierdurch die elektrischen und magnetischen Kerneigenschaften merklich verschlechtert werden. Der Grund hierfür ist darin zu suchen, daß infolge des hohen Übergangswiderstandes an den Kontaktstellen der Eisenteilchen bei der sehr geringfügigen Zusammenpressung Wirbelströme nicht auftreten. Die Herstellung der Magnetkerne erfolgt daher erfindungsgemäß so, daß das magnetisierbare Pulver ohne Beimengung von Isolationspulver dem vorstehend beschriebenen Schüttelprozeß unterworfen wird. Die nachträgliche Tränkung findet, wie im Hauptpatent 554:217 beschrieben, statt.It has now been found that at these low pressures the Insulating layers in the core material can be omitted without this the core electrical and magnetic properties are markedly deteriorated. The reason for this is to be found in the fact that as a result of the high contact resistance at the contact points of the iron particles with the very slight compression Eddy currents do not occur. The magnetic cores are therefore manufactured according to the invention so that the magnetizable powder without adding insulation powder to the above is subjected to the shaking process described. The subsequent watering takes place, as described in main patent 554: 217 instead.

Durch den Fortfall des isolierenden Pulvers nach der Erfindung wird eine wesentliche Vereinfachung des Kernaufbaues sowie eine bedeutende Erleichterung im Herstellungsprozeß erreicht.By eliminating the insulating powder according to the invention a significant simplification of the core structure as well as a significant relief achieved in the manufacturing process.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Massekernen aus Pulver magnetisierbarer Stoffe für Induktionsspulen u. dgl., vorzugsweise für Fernsprechzwecke, nach Patent 554217, dadurch gekennzeichnet, daß das magnetisierbare Pulver ohne Beimengung von Isolationspulver in einem Gefäß einem Schüttelprozeß solcher Stärke und Dauer unterworfen wird, daß die Teilchen ihre im fertigen Massekern vorhandene Lagerungsdichte erhalten.PATENT CLAIM: Process for the production of mass cores from powder of magnetizable substances for induction coils and the like, preferably for telephone purposes, according to Patent 554217, characterized in that the magnetizable powder is subjected to a shaking process of such strength and duration in a vessel without adding insulating powder the particles receive their storage density present in the finished mass core.
DEA55536D 1926-11-02 1926-11-02 Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes Expired DE559943C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA55536D DE559943C (en) 1926-11-02 1926-11-02 Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA55536D DE559943C (en) 1926-11-02 1926-11-02 Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes

Publications (1)

Publication Number Publication Date
DE559943C true DE559943C (en) 1932-09-26

Family

ID=6940040

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA55536D Expired DE559943C (en) 1926-11-02 1926-11-02 Process for the production of mass cores from powder magnetizable substances for induction coils and Like., Preferably for telephone purposes

Country Status (1)

Country Link
DE (1) DE559943C (en)

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