DE912842C - Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet - Google Patents

Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet

Info

Publication number
DE912842C
DE912842C DES25565A DES0025565A DE912842C DE 912842 C DE912842 C DE 912842C DE S25565 A DES25565 A DE S25565A DE S0025565 A DES0025565 A DE S0025565A DE 912842 C DE912842 C DE 912842C
Authority
DE
Germany
Prior art keywords
magnetic powder
magnet
binding agent
permanent magnet
melt flow
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
DES25565A
Other languages
German (de)
Inventor
Dr Phil Hans Edler
Dr Walter Haenlein
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES25565A priority Critical patent/DE912842C/en
Application granted granted Critical
Publication of DE912842C publication Critical patent/DE912842C/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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/06—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/08—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/083—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Description

Aus Magnetpulver und Bindemittel bestehender Magnet, insbesondere Dauermagnet Es ist bekannt, Magnetkerne und Dauermagnete aus Magnetpulver unter Zuhilfenahme eines organischen Bindemittels, z. B. eines härtbaren Kunstharzes, herzustellen. Kommt es auf große Maßhaltigkeit solcher Magnete an, dann müßte, dafür gesorgt werden, daß sie stets etwa den gleichen Feuchtigkeitsgehalt und nach Möglichkeit auch dauernd. die gleiche Temperatur haben, weil sich die Abmessungen solcher Körper, wenn auch nur geringfügig, mit dem Feuchtigkeiitsgrad und der Temperatur ändern. Es gibt verschiedene Anwendungsgebiete solcher Magnete, z. B. das Gebiet der Zählerbremsmagnete, bei denen schon ganz geringfügige. Formänderungen Einfluß auf die Meßgenauigkeit haben. Erfindungsgemäß werden diese Mängel dadurch vermieden, daß man für die. Herstellung solcher Magnete statt der bisher üblichen organischen Bindemittel dinen anorganischem Schmelzfluß, wie Glas, Basalt, Hochofenschlacke od. dgl., verwendet.Magnet consisting of magnetic powder and binding agent, in particular Permanent magnet It is known to take magnetic cores and permanent magnets from magnetic powder With the aid of an organic binder, e.g. B. a curable synthetic resin, to manufacture. If the dimensional accuracy of such magnets is important, then it would have to be care should be taken that they always have about the same moisture content and whenever possible also continuously. have the same temperature because the dimensions of such bodies change with humidity and temperature, even if only slightly. There are various fields of application for such magnets, e.g. B. the area of counter brake magnets, with which already very minor. Changes in shape influence the measurement accuracy to have. According to the invention these shortcomings are avoided in that one for the. Manufacturing Such magnets instead of the previously common organic binders are inorganic Melt flow, such as glass, basalt, blast furnace slag or the like. Used.

Besteht die Gefahr, da.ß dieser Schmelzfluß an sich das Magnetpulver zu stark angreifen würde, dann empfiehlt es sich, die chemische Aktivität dieses Stoffeis zuvor ahzu.sättigen, indem man z. B. den Schmelzfluß vor der Vermischung mit dem Magnetpulver durch Beimischung einer gewissen Menge von Eisenpulver oel. dgl. absättigt. Bei der Herstellung solcher Magnetkörper kann der Schmelzfluß mit dem Magnetpulver zunächst vermischt und dann (iin die gewünschte Magnetform gegossen oder gepreßt werden, oder man kann einen pulverisierten Schmelzflußkörper mit dem Magnetpulver vermischen, in die gewünschte Form pressten und anschließend bis zum Verschmelzen erhitzen.There is a risk that this melt flow in itself will be the magnetic powder would attack too strongly, then it is advisable to reduce the chemical activity of this Saturate the substance beforehand by e.g. B. the melt flow prior to mixing with the magnetic powder by adding a certain amount of iron powder oil. the like. saturates. In the production of such magnetic bodies, the melt flow can also be used mixed with the magnetic powder and then into the desired magnetic shape poured or pressed, or you can a powdered melt flow body with the Mix the magnetic powder, press it into the desired shape and then until the Heat the fusion.

Die Erfindung bietet den Vorteil, daß auf diese Weise - hergestellte Magnetkörper sehr formbeständig sind.The invention has the advantage that in this way - manufactured Magnetic bodies are very dimensionally stable.

Claims (1)

PATENTANSPRUCU: Aus Magnetpulver und Bindemittel bestehender Magnet, insbesondere Dauermagnet, dadurch gekennzeichnet, daß als Bindemittel ein anorganischer Schmelzfluß, wie Glas od. dgl., verwendet ist.PATENT APPLICATION: Magnet consisting of magnetic powder and binding agent, in particular permanent magnet, characterized in that an inorganic binder is used Melt flow, such as glass or the like. Is used.
DES25565A 1951-11-10 1951-11-10 Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet Expired DE912842C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES25565A DE912842C (en) 1951-11-10 1951-11-10 Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES25565A DE912842C (en) 1951-11-10 1951-11-10 Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet

Publications (1)

Publication Number Publication Date
DE912842C true DE912842C (en) 1954-06-03

Family

ID=7478396

Family Applications (1)

Application Number Title Priority Date Filing Date
DES25565A Expired DE912842C (en) 1951-11-10 1951-11-10 Magnet consisting of magnetic powder and binding agent, in particular a permanent magnet

Country Status (1)

Country Link
DE (1) DE912842C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041960A1 (en) * 1979-11-08 1981-05-27 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Magnetic powder prodn. for high density magnetic recording - by heat treating amorphous material in glass matrix to give substd. hexagonal ferrite
FR2518528A1 (en) * 1981-12-23 1983-06-24 Europ Composants Electron Formation of magnetic castings - by cold forming followed by thermal treatment at 500 degrees Celsius in air
WO1991014273A1 (en) * 1990-03-09 1991-09-19 Magnetfabrik Schramberg Gmbh & Co. PROCESS FOR MANUFACTURING A SINTERED SEFe PERMANENT MAGNET

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3041960A1 (en) * 1979-11-08 1981-05-27 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Magnetic powder prodn. for high density magnetic recording - by heat treating amorphous material in glass matrix to give substd. hexagonal ferrite
FR2518528A1 (en) * 1981-12-23 1983-06-24 Europ Composants Electron Formation of magnetic castings - by cold forming followed by thermal treatment at 500 degrees Celsius in air
WO1991014273A1 (en) * 1990-03-09 1991-09-19 Magnetfabrik Schramberg Gmbh & Co. PROCESS FOR MANUFACTURING A SINTERED SEFe PERMANENT MAGNET

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