DE430738C - Process for mixing powdery components for the production of magnetic bodies - Google Patents

Process for mixing powdery components for the production of magnetic bodies

Info

Publication number
DE430738C
DE430738C DEA44605D DEA0044605D DE430738C DE 430738 C DE430738 C DE 430738C DE A44605 D DEA44605 D DE A44605D DE A0044605 D DEA0044605 D DE A0044605D DE 430738 C DE430738 C DE 430738C
Authority
DE
Germany
Prior art keywords
production
mixing
magnetic bodies
powdery components
mixing powdery
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
DEA44605D
Other languages
German (de)
Inventor
Dr Walther Ehlers
Karl Grohmann
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 DEA44605D priority Critical patent/DE430738C/en
Application granted granted Critical
Publication of DE430738C publication Critical patent/DE430738C/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)
  • Powder Metallurgy (AREA)

Description

Verfahren zum mischen von pulverförmigen Bestandteilen zur Herstellung von 1Vlagnetkörpern. Aus Pulver zusammengepreßte magnetische Leiter, speziell Magnetkerne für Pupinspulen, werden im allgemeinen so hergestellt, daß das magnetische Pulver mit einer Lösung eines Isoliermaterials, beispielsweise einer alkoholischen Schellacklösung, vermischt, getrocknet und zu einem festen Körper unter hohem Druck zusammengepreßt wird. Zum Mischen des magnetischen Materials mit der isolierenden Lösung sind die verschiedensten Maschinen, u. a. aus der Isolierrnaterialindustrie, bekannt.Process for mixing powdery ingredients for production of 1 flag bodies. Magnetic conductors compressed from powder, especially magnetic cores for Pupin's coils, are generally manufactured so that the magnetic powder with a solution of an insulating material, for example an alcoholic shellac solution, mixed, dried and compressed into a solid body under high pressure will. To mix the magnetic material with the insulating solution are the various machines, including known from the insulating material industry.

Anders. liegen die - Mischungsbedingungen für trocknes magnetisches Pulver mit sehr feinem, trocknem, isolierendem Pulver, z. B. keramischen Stoffen, verschiedenen Glassorten oder Materialien mit ähnlichen mechanischen, thermischen und elektrischen Eigenschäften. Die Mischung derartiger pulverförmiger Bestandteile zur Herstellung von Magnetkernen für Pupinspulen muß außerordentlich gut durchgeführt werden. Ähnliche Bedingungen sind in anderen Industriezweigen, in denen pulverförmige Bestandteile gemischt werden, nicht vorhanden.Different. are the - mixing conditions for dry magnetic Powder with very fine, dry, insulating powder, e.g. B. ceramic materials, different types of glass or materials with similar mechanical, thermal and electrical properties. The mixture of such powdery ingredients for the production of magnetic cores for Pupin's coils must be carried out extremely well will. Similar conditions are found in other industries where powdery Ingredients are mixed, not available.

Zur sorgfältigen Durchmischung derartiger Pulver aus magnetischem und isolierendem Material werden Trommeln mit diagonal eingesetzten Achsen verwendet, deren Innenwand mit Schaufeln, Leisten, Stäbchen o. dgl. besetzt ist. Es hat sich jedoch gezeigt, daß auch durch Anwendung derartiger Mischtrommeln die zur Erzielung gleichmäßiger und möglichst verlustfreier Magnetkerne erforderliche Durchmischung nicht erreicht wird, weil einerseits die zu mischenden Körnungen ",on sehr verschiedener Größenordnung sind und andererseits das Isoliermaterial eine außergewöhnliche Feinheit des Kornes besitzt.For thorough mixing of such magnetic powders and insulating material, drums with diagonally inserted axes are used, the inner wall of which is covered with shovels, strips, chopsticks or the like. It has however, shown that even by using such mixing drums to achieve uniform and loss-free magnetic cores required mixing is not achieved because, on the one hand, the grain sizes to be mixed are very different And, on the other hand, the insulating material is extraordinarily fine of the grain.

Gemäß der Erfindung wird eine sehr gute Durchmischung der pulverförmigen Bestandteile des Kernes dadurch erzielt, daß den zu mischenden Substanzen für die Dauer des Mischprozesses ein gröber gekörntes Hilfsmaterial (etwa Stahlschrot) zugesetzt wird; beispielsweise kommen auf 6 kg Mischung ungefähr a1112 kg Hilfsmaterial. Das Durchmesser verhältnis der Magnetpulverkörner und der Körner des Hilfsmaterials beträgt ungefähr i : io. Der Zusatz eines solchen Hilfsmaterials hat den Zweck, das spezifische Gewicht des zu mischenden Materials zu erhöhen und dadurch eine bessere Durcharbeitung der Mischung zu ermöglichen. Zweckmäßigerweise wird nur eine verhältnismäßig geringe Menge des zu mischenden Materials in die Mischtrommel getan, auch bei ausgedehnter Massenfabrikation; die Innigkeit der Durchmischung wird dadurch weiter gefördert.According to the invention, a very good mixing of the powdery Components of the core achieved in that the substances to be mixed for the During the mixing process, a coarser grained auxiliary material (such as steel shot) is added will; For example, there are approximately 1112 kg of auxiliary material for every 6 kg of mixture. That Diameter ratio of the magnetic powder grains and the grains of the auxiliary material is approximately i: io. The purpose of adding such auxiliary material is to increase the specific weight of the material to be mixed and thereby a to enable better working through of the mixture. Appropriately, only one a relatively small amount of the material to be mixed is put into the mixing drum, even with extensive mass production; the intimacy of the mixing is thereby further promoted.

Claims (1)

PATENTANSPRUCH: Verfahren zum Mischen von pulverförmigen Bestandteilen zur Herstellung von Magnetkörpern, dadurch gekennzeichnet, daß dem Mischgut für die Dauer des Mischprozesses gröber gekörntes Hilfsmaterial zugesetzt wird. Claim: Method for mixing powdery components for the production of magnetic bodies, characterized in that coarser grained auxiliary material is added to the mixed material for the duration of the mixing process.
DEA44605D 1925-03-31 1925-03-31 Process for mixing powdery components for the production of magnetic bodies Expired DE430738C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA44605D DE430738C (en) 1925-03-31 1925-03-31 Process for mixing powdery components for the production of magnetic bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA44605D DE430738C (en) 1925-03-31 1925-03-31 Process for mixing powdery components for the production of magnetic bodies

Publications (1)

Publication Number Publication Date
DE430738C true DE430738C (en) 1926-06-22

Family

ID=6934277

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA44605D Expired DE430738C (en) 1925-03-31 1925-03-31 Process for mixing powdery components for the production of magnetic bodies

Country Status (1)

Country Link
DE (1) DE430738C (en)

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