DE744149C - Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder - Google Patents

Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder

Info

Publication number
DE744149C
DE744149C DEL92942D DEL0092942D DE744149C DE 744149 C DE744149 C DE 744149C DE L92942 D DEL92942 D DE L92942D DE L0092942 D DEL0092942 D DE L0092942D DE 744149 C DE744149 C DE 744149C
Authority
DE
Germany
Prior art keywords
cores
mass
high frequency
production
metal powder
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
DEL92942D
Other languages
German (de)
Inventor
Hans Brinkmann
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz 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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DEL92942D priority Critical patent/DE744149C/en
Application granted granted Critical
Publication of DE744149C publication Critical patent/DE744149C/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
    • H01F1/26—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 by macromolecular organic substances

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

Verfahren zur Herstellung von Massekernen für Magnetkerne, Hochfrequenzkerne u. dgl. aus fnagnetisierbarem Metallpulver Zur Herstellung von Massekernen, wie Magnetkernen, Hochfreguenzkernen u. dgl., aus ma-gnetisierbarem Metallpulver ist es notwendig, die Pulverteilchen mit Isolationsmitteln zu umgeben, bevor man das Pulver in die gewünschte Form preßt. Die bekannten Isolationsmittel sind Natur- und Kunstharze, feie Schellack, Phenol-Formaldehyd- und Harnstoff - Formaldehyd - Kondensationsprodukte sowie auch Celluloseabkömrnlinge, Wachse und asphaltartige -Massen. Alle diese Isolationsmittel haben den Nachteil, daß die mit diesen Isolations- und Bindemitteln angefertigten Kerne entweder nicht genügende mechanische Festigkeit und Wärmebeständigkeit besitzen oder ungenügende elektrische Resultate ergeben.Process for the production of mass cores for magnetic cores, high frequency cores and the like made of magnetizable metal powder Magnetic cores, high frequency cores and the like, made of magnetizable metal powder it is necessary to surround the powder particles with isolating agents before doing this Presses powder into the desired shape. The well-known isolating agents are natural and synthetic resins, free shellac, phenol-formaldehyde and urea-formaldehyde - Condensation products as well as cellulose pellets, waxes and asphalt-like -Masses. All of these isolating means have the disadvantage that those with these isolating and binders made cores either do not have sufficient mechanical strength and have heat resistance or give unsatisfactory electrical results.

\'orliegende Erfindung schlägt vor, als Bindemittel flüssige, wasserlösliche, härtbare alkalisch-kondensierte zu verwenden und nach der Vermischung mit den Pulverteilchen das Gemisch zu trocknen und in Formen zu pressen und darauf die Preßlinge einer Wärmebehandlung zu unterziehen, um sie wasserunlöslich und mechanisch fest zu machen.The present invention proposes liquid, water-soluble, curable alkaline-condensed to use and after mixing with the powder particles to dry the mixture and to press it into molds and then the compacts one Subject to heat treatment to make them water-insoluble and mechanically solid.

Es wurde durch eingehende Ziersuche festgestellt, däß auf diese Weise Metallkerne hergestellt werden können,. die außer einer großen mechanischen Festgkeit und hohen Wärmebeständigkeit auch gute magnetische und elektrische Eigenschaften besitzen.It was established through a thorough search for ornaments that in this way Metal cores can be made. which besides a great mechanical strength and high heat resistance also good magnetic and electrical properties own.

Erfindungsgemäß wird beispielsweise das magnetisierbare Pulver, insbesondere Eisen-und Nickelpulver, die :durch thermische Zersetzung der entsprechenden Metallcarbonvlverbindungen hergestellt sind, mit etwa 30/0 flüssigem, wasserlöslichem, härtbarem, alkalisch--kondensiertem, Phenol-FormaI.deiiydkondensation.sprodukt gemischt und in einer Knetmaschine einige Stunden verarbeitet. Das Gemisch wird naclilier getrocknet unrl nach dein Trocknen in einer Schlagmühle zerkleinert und vermahlen. Aus diesem Pulver, das auf einen bestimmten Feuchtigkeitswert gebracht wird, werden nun Preßlinbe unter einem bestimmten Druck herbestellt. Dies Preßlinbe erfahren nun eine inehrstündi Wärmevorheliandlung bei ungefähr 6o ;o° C. Hierdurch wird der Preß11ng @' Härtet. Um eine Wasserunlöslichkeit zu e., reichen, wird der Preßling einer kurz Wärinenachbehandhing bei ungefähr 16o° C unterzogen.According to the invention, for example, the magnetizable powder, in particular iron and nickel powder, which are: produced by thermal decomposition of the corresponding metal carbon compounds, is mixed with about 30/0 liquid, water-soluble, curable, alkaline-condensed, phenol-formaldehyde condensation product and in processed in a kneading machine for a few hours. The mixture is dried afterwards and, after drying, it is comminuted and ground in a hammer mill. This powder, which is brought to a certain moisture level, is now made of pressed linings made to a specific pressure. this Presslinbe now experience an hour Heat pre-heat treatment at around 6o ; o ° C. This means that the press @ ' Hardens. In order to be insoluble in water e., enough, the pellet will be short Post-heat treatment at around 160 ° C.

Claims (3)

PATENTANSPRÜCHE: 1. Verfahren zur Herstellung von Massekernen für Magnetkerne, Hochfreqtien7lcerne u. dgl. aus magnetisier- ba.m Metallpulver, dadurch gekenn- zL4rhnet, daß die Pulverteilchen mit einem
fäigen, wasserlöslichen, härtbaren, alkalisch-kondeusierten Plienol-Porma@dchvd-Kondensationsprodukt vermischt werden, [all darauf das Gemisch getrocknet und #i. Formen gepreßt wird uiid daß die ieliliiige nach der Formung eine Wärineachbehandlung erfahren, um die Kerne vasserunlöslich zu machen und eine holte mechanische Festigkeit zu erzielen. PATENT CLAIMS: 1. Process for the production of mass cores for magnetic cores, high frequency cores and the like from magnetized ba.m metal powder, thus identifiable zL4rhnet that the powder particles with a
capable, water-soluble, curable, alkaline-condensed Plienol-Porma @ dchvd condensation product are mixed, [all then the mixture is dried and #i. Molds are pressed uiid that the ieliliiige undergo a heat treatment after molding in order to make the cores insoluble in water and to achieve a high mechanical strength. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die gepreßten Kerne zunächst durch Erwärmen auf ungefähr 6o bis 7o° C gehärtet und dann kurzzeitig auf 16o° C erhitzt werden. 2. The method according to claim i, characterized in that the pressed cores are first hardened by heating to about 6o to 7o ° C and then briefly heated to 16o ° C. 3. Massekern, Hergestellt nach Verfahren gemäß Anspruch 1 o. f.3. Mass core, produced by the method according to claim 1 o. f.
DEL92942D 1937-07-24 1937-07-24 Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder Expired DE744149C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL92942D DE744149C (en) 1937-07-24 1937-07-24 Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL92942D DE744149C (en) 1937-07-24 1937-07-24 Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder

Publications (1)

Publication Number Publication Date
DE744149C true DE744149C (en) 1944-01-10

Family

ID=7287584

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL92942D Expired DE744149C (en) 1937-07-24 1937-07-24 Process for the production of mass cores for magnetic cores, high frequency cores u. Like. Made of magnetizable metal powder

Country Status (1)

Country Link
DE (1) DE744149C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966314C (en) * 1949-08-26 1957-07-25 Standard Elek K Ag Process for the production of mass cores from magnetizable powder particles raised with an insulating material of high softening temperature
DE1093442B (en) * 1956-07-16 1960-11-24 John Cockbain Briggs Electrical insulating material based on natural or synthetic rubber
DE1165699B (en) * 1958-11-26 1964-03-19 Myron Abraham Coler Granular product for the manufacture of electrically conductive plastic objects and process for its manufacture
DE977502C (en) * 1950-04-27 1966-09-15 Gen Aniline & Film Corp Process for the production of a carbonyl iron powder suitable for the production of magnetic cores with a high specific resistance and low energy loss at very high frequencies

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966314C (en) * 1949-08-26 1957-07-25 Standard Elek K Ag Process for the production of mass cores from magnetizable powder particles raised with an insulating material of high softening temperature
DE977502C (en) * 1950-04-27 1966-09-15 Gen Aniline & Film Corp Process for the production of a carbonyl iron powder suitable for the production of magnetic cores with a high specific resistance and low energy loss at very high frequencies
DE1093442B (en) * 1956-07-16 1960-11-24 John Cockbain Briggs Electrical insulating material based on natural or synthetic rubber
DE1165699B (en) * 1958-11-26 1964-03-19 Myron Abraham Coler Granular product for the manufacture of electrically conductive plastic objects and process for its manufacture

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