DE1614118A1 - Anisotropic permanent magnetic body - Google Patents
Anisotropic permanent magnetic bodyInfo
- Publication number
- DE1614118A1 DE1614118A1 DE1967M0072816 DEM0072816A DE1614118A1 DE 1614118 A1 DE1614118 A1 DE 1614118A1 DE 1967M0072816 DE1967M0072816 DE 1967M0072816 DE M0072816 A DEM0072816 A DE M0072816A DE 1614118 A1 DE1614118 A1 DE 1614118A1
- Authority
- DE
- Germany
- Prior art keywords
- anisotropic permanent
- remanence
- permanent magnetic
- magnetic body
- starting material
- 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.)
- Granted
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
-
- 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
-
- 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
- H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
-
- 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
- H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
- H01F1/113—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0286—Trimming
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
H AGHETPABR Γ Κ BONN GmbH· vorm. Gewerkschaft WindhorstH AGHETPABR Γ Κ BONN GmbH Windhorst union
Patentanmeldung Anisotroper dauermagnetischer KörperPatent application Anisotropic permanent magnetic body
Die Erfindung betrifft einen anisotropen dauermagnet!sehen Körper, der aus einem Dauermagnetpulver und einem Bindemittel im Hagnetfeld gepresst wird.The invention relates to an anisotropic permanent magnet! See body, the one made of a permanent magnet powder and a binding agent in the magnetic field is pressed.
Die magnetischen Gütewerte der auf dieee an «loh bekannt· Wels« bisher hergestellten Dauermagnete liegen verhältnismäßig niedrig· Wird als Ausgangswerkstoff ein Bariujaferrit verwendet, so wurden bisher etwa folgende Werte bekannt:The magnetic quality values of the "loh known catfish" Permanent magnets manufactured up to now are relatively low. If a barium ferrite is used as the starting material, then so far the following values are known:
Br = ?.200 Gauß, BHC =1,480 Oersted, (Β.Η)Β&χ - 1,08.106 Ö.Oe,B r =? .200 Gauss, B H C = 1.480 Oersted, (Β.Η) Β & χ - 1.08.10 6 Ö.Oe,
und dieβ, obwohl Bariumferrit als ein "Werkstoff mit mögliohat hoher Koerzitivfeidstärke" für dieses Verfahren besonders geeignet sein soll (z.3. DAS 1 168 578). .and this, although barium ferrite can be used as a "material" high coercive force "is particularly suitable for this process should be (e.g. 3rd DAS 1 168 578). .
Der Erfinder hat eich die Aufgabe gestellt, die magnetischen Werte dieser Pressmagnete wesentlich zu verbessern· Dies ist ihm gelungen, nachdem er erkannt hat, auf welche Eigenschaften des Auegangewerkstoffes es ankommt, wenn hohe magnetische Werte des gepressten Zcrpers erreicht werden sollen.The inventor has set the task, the magnetic values to improve this press magnet significantly · He succeeded in doing this, after he has recognized which properties of the external material are important when high magnetic values of the pressed Zcrpers should be reached.
■»■ »
Erfindungsgemäß wird als Ausgangswerkstoff»für diesen anisotropen dauerma^netischen Körper, der aus anisotropem Magnetpulver mit einem Bindemittel im Magnetfeld gepresst wird, ein solcher verwendet, dessen Koerzitivfeldstärke jHq mindestens gleich der geforderten Remanenz des fertigen MagnetTcörpere ist, dessen Remanenz etwa das 1,3 bis 1,5 fache der geforderten Remanenz 41TJ„ des fertigen Magneten ist und dessen Ausbauchungsfaktor I421£äI]äSS größer als 0,6 ist.According to the invention, the starting material for this is anisotropic permanent body made of anisotropic magnetic powder with a binding agent is pressed in a magnetic field, such a binding agent is used, whose coercive field strength jHq is at least equal to that required The remanence of the finished magnet body is whose remanence is about 1.3 to 1.5 times the required remanence 41TJ “of the finished magnet and whose bulging factor I421 £ äI] äSS is greater than 0.6.
4<rjA 4 <rj A
009822/0568009822/0568
- 2- 2
BADBATH
Ein Beispiel für die Erfindung sei die Herstellung eines anisotropen Pressmagneten mit einem (B.H) - Wert von 1,6.10 G.O· und einer Remanenz B von 2.800 Gauß. Nach der Erfindung wurde ein Ausgangswerkstoff mit den Werten:An example of the invention is the production of an anisotropic Press magnets with a (B.H) value of 1.6.10 G.O and a remanence B of 2,800 Gauss. According to the invention, a Base material with the values:
Br * 1,3. 2.800 G = 3.800 G, rEn = 2.800 Oe1 B r * 1.3. 2,800 G = 3,800 G, r E n = 2,800 Oe 1
> 0,6 verwendet,> 0.6 used,
Entmagnetisierunsskurve in Bild 1 mit a bezeichnet ist· E1. wurd· zerkleinert, mit 3 Gewichtsprozent Kunststoffbindemittel vermischt und in einem Magnetfeld von 5.000 Oersted kalt zu einem Körper gepresst, der nach dem Herausnehmen der Pressform durch Erwärmen (ca. 1 Stunde in einem Ofen auf HO0C) verfestigt wurde, ohne dabei seine KaSe merklich zu verändern. An einem so hergestellten Körper wurde die in 3ild 1 mit b bezeichnete Kurve gerneaeentThe demagnetization curve in Figure 1 is labeled a · E 1 . was comminuted, mixed with 3 percent by weight plastic binder and pressed cold in a magnetic field of 5,000 Oersted to form a body which, after removing the mold , was solidified by heating (about 1 hour in an oven at HO 0 C) without its cheese to change noticeably. On a body produced in this way, the curve labeled b in Fig. 1 was shown
Br = 2.800 G, BHC = 1.900 G, (B-H)n^1x = 1,6e106 G.Oe.B r = 2,800 G, B H C = 1,900 G, (BH) n ^ 1x = 1.6 e 10 6 G.Oe.
Eamit wurden die bisher bekannten Werte für solche Presemagnete erheblich, überschritten und diesem Herstellungsverfahren viele Anwendungsir.öglichkeiten erschlossen.Thus the values known up to now for such presence magnets have become considerable, exceeded and this manufacturing process many possible uses opened up.
Zu der bisher bekannten Lehre steht die Verwendung dieses .Werkstoffee ala Ausgangswerkstoff für die Preasmagnetherstellung im Widerspruch· Nach der bekannten ^ehre soll ein Magnetwerkstoff w mit möglichst hoher ^oersLtivfeldstärke" verwendet werden, der auch bei geringer Remanenz jute magnetische Werte ergeben soll (z.B. DAS 1 168 578). Durch eine Herstellung des oben genannten Ausgangswerkstoffes bei einer niedrigeren Brenntemperatur könnte dieser mit höherer Koersitivfeldstärke jHq als 2.800 0·, zum Beispiel mit jHc β 4.000 - 5.000 0«,To the previously known teaching is the use of this .Werkstoffee ala starting material for Preasmagnetherstellung contradict · According to the known ^ honor to a magnetic material w are used with the highest possible ^ oersLtivfeldstärke ", is said to give the jute even at low remanence magnetic values (eg DAS 1 168 578). By producing the above-mentioned starting material at a lower firing temperature, it could have a higher coercive field strength jHq than 2,800 0 ·, for example with jH c β 4,000 - 5,000 0 «,
- 3 009822/056· - 3 009822/056
BADBATH
bei gleichzeitiger niedriger Remanenz ausgestattet werden (Kurve c in Bild 1)· Die damit hergestellten Preesmagnete zeigen aber wegen der niedrigen Remanenz wieder niedrigere magnetische Werte als das obige Beispiel b. Erst die Verwendung eines Ausgangewerkstoffes mit den vom Erfinder erkannten Eigenschaften brachte die wesentliche Verbesserung des magnetischen GUtewertes auf 1,6.10 G.Oe.with simultaneous low remanence (curve c in picture 1) · The Prees magnets manufactured with it show because of the low remanence again lower magnetic values than that example above b. Only the use of a starting material with the properties recognized by the inventor brought the significant improvement in the magnetic Gt value to 1.6.10 G.Oe.
Die Erfindung kann auch bei anderen Magnetwerkstoffen, zum Beispiel bei Alnico-Legierungen, bei Mn-Bi- oder Mn-Al-Legierun^en, bei Yttrium-Kobalt-Legierun^en Anwendung finden.The invention can also be applied to other magnetic materials, for example in Alnico alloys, in Mn-Bi- or Mn-Al alloys, at Yttrium-cobalt alloys find application.
BAD ORIGINAL 009822/0568 BATH ORIGINAL 009822/0568
Claims (3)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1967M0072816 DE1614118C3 (en) | 1967-02-18 | 1967-02-18 | Process for producing an aminotropic permanent magnet body from an aminotropic permanent magnet powder |
FR1568137D FR1568137A (en) | 1967-02-18 | 1968-02-16 | |
US05/598,342 US4063970A (en) | 1967-02-18 | 1975-07-23 | Method of making permanent magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1967M0072816 DE1614118C3 (en) | 1967-02-18 | 1967-02-18 | Process for producing an aminotropic permanent magnet body from an aminotropic permanent magnet powder |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1614118A1 true DE1614118A1 (en) | 1970-05-27 |
DE1614118B2 DE1614118B2 (en) | 1973-08-02 |
DE1614118C3 DE1614118C3 (en) | 1980-01-17 |
Family
ID=7314684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1967M0072816 Expired DE1614118C3 (en) | 1967-02-18 | 1967-02-18 | Process for producing an aminotropic permanent magnet body from an aminotropic permanent magnet powder |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1614118C3 (en) |
FR (1) | FR1568137A (en) |
-
1967
- 1967-02-18 DE DE1967M0072816 patent/DE1614118C3/en not_active Expired
-
1968
- 1968-02-16 FR FR1568137D patent/FR1568137A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1614118C3 (en) | 1980-01-17 |
FR1568137A (en) | 1969-05-23 |
DE1614118B2 (en) | 1973-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
SH | Request for examination between 03.10.1968 and 22.04.1971 | ||
C3 | Grant after two publication steps (3rd publication) | ||
8320 | Willingness to grant licences declared (paragraph 23) |