DE526972C - Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds - Google Patents

Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds

Info

Publication number
DE526972C
DE526972C DEI39170D DEI0039170D DE526972C DE 526972 C DE526972 C DE 526972C DE I39170 D DEI39170 D DE I39170D DE I0039170 D DEI0039170 D DE I0039170D DE 526972 C DE526972 C DE 526972C
Authority
DE
Germany
Prior art keywords
pitch
production
metal powders
carbonyl compounds
high permeability
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
DEI39170D
Other languages
German (de)
Inventor
Dr Friedrich Bergmann
Dr Karl Eisenmann
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI39170D priority Critical patent/DE526972C/en
Application granted granted Critical
Publication of DE526972C publication Critical patent/DE526972C/en
Expired legal-status Critical Current

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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
    • H01F1/22—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 pressed, sintered, or bound together
    • H01F1/24—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 pressed, sintered, or bound together the particles being insulated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Working-Up Tar And Pitch (AREA)

Description

Verfahren zur Herstellung von Massekernen hoher Permeabilität durch Pressung von mit Isolationsmitteln gemischten Metallpulvern, die zweckmäßig aus ihren Carbonylverbindungen erhalten sind Bekanntlich werden Massekerne, wie sie für Pupinspulen, Magnete usw. Verwendung finden, in der Weise aus Metallpulvern hergestellt, daß man diese mit einem isolierend wirkenden Stoff innig vermischt und dann unter Anwendung hoher Drucke in die gewünschten Formen preßt.Process for the production of mass cores of high permeability by Pressing of metal powders mixed with insulating agents, which are expediently made Their carbonyl compounds are known to be mass nuclei like them for Pupin coils, magnets etc. use in the manner of metal powders produced that this is intimately mixed with an insulating substance and then pressed into the desired shapes using high pressures.

Als geeignete Isolationsmittel hat man schon Schellack, Harze, Kautschuk und Alkalisilikate verwendet. Man hat auch bereits vorgeschlagen, magnetisch leitende, feste Körper dadurch herzustellen, daß man magnetisch leitende, relativ große Teilchen durch ein Isolationsmittel verbindet, in welchem sehr kleine magnetisch leitende Teilchen eingebettet sind, welche durch Abschleifen der größeren Teilchen mittels Schleifmittel, z. B. Glas, gewonnen werden, wobei das Schleifmittel als Isolationsmittel verwendet werden kann.Shellac, resins and rubber are already used as suitable insulation materials and alkali silicates are used. It has also already been proposed to use magnetically conductive, To produce solid bodies by making magnetically conductive, relatively large particles connects by an insulating means in which very small magnetically conductive Particles are embedded, which means by grinding away the larger particles Abrasives, e.g. B. glass, are obtained, with the abrasive as an insulating agent can be used.

Es wurde nun gefunden, daß man zu besonders günstigen Ergebnissen hinsichtlich der wirksamen Permeabilität gelangt, wenn zur Herstellung von Massekernen hoher Permeabilität durch Pressung von mit Isolationsmitteln gemischten Metallpulvern, die zweckmäßig aus ihren Carbonylverbindungen erhalten sind, gemäß der Erfindung als Isolationsmittel Stoffe verwendet werden, die durch Behandlung von Gemischen aus Asphalt, Teer oder anderen Pecharten und pflanzlichen oder tierischen Ölen mit sauerstoffhaltigen Gasen bei erhöhter Temperatur oder durch Zusammenschmelzen von Weichharzen mit Pechen oder Asphalten oder durch Zusammenschmelzen von Weichharzen mit Pechen oder Asphalten oder durch Einwirkenlassen von Schwefel oder Schwefel abgebenden Stoffen bei erhöhter Temperatur auf Gemische aus Stearinpech oder ähnlichen Pecharten. pflanzlichen oder tierischen Ölen und aus Stein- oder Braunkohlenteer durch Extraktion mit geeigneten Lösungsmitteln erhältlichen Stoffen gewonnen werden.It has now been found that particularly favorable results can be obtained in terms of effective permeability when used for the production of mass cores high permeability by pressing metal powders mixed with insulating agents, suitably obtained from their carbonyl compounds, according to the invention Substances are used as insulation materials obtained by treating mixtures from asphalt, tar or other types of pitch and vegetable or animal oils with oxygen-containing gases at elevated temperature or by melting together of Soft resins with pitch or asphalt or by melting soft resins together with pitch or asphalt or by allowing sulfur or sulfur to act emitting substances at elevated temperature on mixtures of stearin pitch or similar Bad luck. vegetable or animal oils and from coal or lignite tar substances obtainable by extraction with suitable solvents.

Vorteilhaft verwendet man Metallpulver, die durch thermische Zersetzung aus ihren Carbonylverbindungen erhalten worden sind. Die nach vorliegendem Verfahren verwendeten Isolationsstoffe haben den Vorteil, sehr billig und leicht zugänglich zu sein; im Gegensatz zu anderen bekannten Isolationsmitteln, wie Schellack, Kautschuk und Harze, werden sie fast ausschließlich aus inländischen Rohstoffen hergestellt.It is advantageous to use metal powder which is produced by thermal decomposition have been obtained from their carbonyl compounds. The following procedure The insulation materials used have the advantage of being very cheap and easily accessible to be; in contrast to other well-known insulation materials such as shellac, rubber and resins, they are made almost entirely from domestic raw materials.

Beispiel In einer geeigneten Knetmaschine fügt man zu 4 kg eines z. B. durch thermische Zersetzung von Eisencarbonyl erhaltenen Eisenpulvers i ob g eines ",durch Einwirkenlassen von Schwefel bei i 7o bis i 8o° auf ein Gemisch aus Stearinpech, Dorschtran und aus Braunkohlenteer durch Extraktion mit Äthylalkohol gewonnenen Stoffen erhaltenen Produktes in kleinen Stücken hinzu und knetet die Mischung a Stunden bei iao0. Das so imprägnierte Eisenpulver wird in einer Form unter einem Druck von etwa 8 5oo kgIqcm zu Ringen geprellt.Example In a suitable kneading machine, 4 kg of a z. B. by thermal Decomposition of iron powder obtained from iron carbonyl i ob g a ", by allowing sulfur to act at i 70 to i 80 ° on a mixture from stearin pitch, cod oil and from lignite tar by extraction with ethyl alcohol The obtained substances are added to the product obtained in small pieces and kneaded Mix a hours at iao0. The iron powder thus impregnated is in a mold bruised into rings under a pressure of about 8500 kgIqcm.

Ein aus drei derartigen Ringen zusammengesetzter, einlagig bewickelter Kern hat folgende Eigenschaften: Verlustzahlen, bezogen auf Permeabilität i H/i Amperewindung/cm Verlustwiderstand - 5 000 f. 0,2 H; i- i,o m A ..-5000 w h n 37,0 3.7 32,9 3,0 1,71 Vergleichszahlen des gleichen Eisenpulvers mit gleichen Gewichtsmengen anderer Isolierstoffe imprägniert Mexphalt 35,0 4,05 33,4 3,6 =,9i Gilsonitasphalt 43,9 12,25 44,8 6,0 4,11 A single-layer wound core composed of three such rings has the following properties: Loss numbers, based on Permeability i H / i ampere turn / cm loss resistance - 5,000 f. 0.2 H; i- i, om A ..- 5000 whn 37.0 3.7 32.9 3.0 1.71 Comparative figures of the same iron powder with the same amounts by weight impregnated with other insulating materials Mexphalt 35.0 4.05 33.4 3.6 = .9i Gilsonitasphalt 43.9 12.25 44.8 6.0 4.11

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Massekernen hoher Permeabilität durch Pressung von mit Isolationsmitteln gemischten Metallpulvern, die zweckmäßig aus ihren Carbonylverbindungen erhalten sind, dadurch gekennzeichnet, daß als Isolationsmittel Stoffe verwendet werden, die durch Behandlung von Gemischen aus Asphalt, Teer oder anderen Pecharten und pflanzlichen oder tierischen Ölen mit sauerstoffhaltigen Gasen bei erhöhter Temperatur oder durch Zusammenschmelzen von Weichharzen mit Pechen oder Asphalten oder durch Einwirkenlassen von Schwefel oder Schwefel abgebenden Stoffen bei erhöhter Temperatur auf Gemische aus Stearinpech oder ähnlichen Pecharten, pflanzlichen oder tierischen Ölen und aus Stein- oder Braunkohlenteer durch Extraktion mit geeigneten Lösungsmitteln erhältlichen Stoffen gewonnen werden. PATENT CLAIM: Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds, characterized in that substances are used as insulating agents which are obtained by treating mixtures of asphalt, tar or other types of pitch and vegetable or animal oils with oxygen-containing gases at elevated temperature or by melting soft resins with pitch or asphalt or by allowing sulfur or sulfur-releasing substances to act at elevated temperature on mixtures of stearin pitch or similar types of pitch, vegetable or animal oils and from coal or lignite tar by extraction with substances available in suitable solvents can be obtained.
DEI39170D 1928-03-31 1928-03-31 Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds Expired DE526972C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI39170D DE526972C (en) 1928-03-31 1928-03-31 Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI39170D DE526972C (en) 1928-03-31 1928-03-31 Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds

Publications (1)

Publication Number Publication Date
DE526972C true DE526972C (en) 1931-06-16

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DEI39170D Expired DE526972C (en) 1928-03-31 1928-03-31 Process for the production of mass cores of high permeability by pressing metal powders mixed with insulating agents, which are expediently obtained from their carbonyl compounds

Country Status (1)

Country Link
DE (1) DE526972C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970695C (en) * 1943-11-17 1958-10-16 Siemens Ag Process for the production of magnetic powder cores, especially for the purposes of high frequency technology
DE1243076B (en) * 1961-02-15 1967-06-22 Siemens Ag Elastic ferromagnetic body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970695C (en) * 1943-11-17 1958-10-16 Siemens Ag Process for the production of magnetic powder cores, especially for the purposes of high frequency technology
DE1243076B (en) * 1961-02-15 1967-06-22 Siemens Ag Elastic ferromagnetic body

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