GB750537A - Method of producing permanent magnets - Google Patents
Method of producing permanent magnetsInfo
- Publication number
- GB750537A GB750537A GB3670/54A GB367054A GB750537A GB 750537 A GB750537 A GB 750537A GB 3670/54 A GB3670/54 A GB 3670/54A GB 367054 A GB367054 A GB 367054A GB 750537 A GB750537 A GB 750537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- binding agent
- mould
- compressed
- magnetic field
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
-
- 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
- H01F41/0273—Imparting anisotropy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Hard Magnetic Materials (AREA)
Abstract
A pulverulent mixture of magnetic material and a binding agent is sprinkled into a mould whilst under the influence of a magnetic field directed so as to correspond to the direction of flux in the finished magnet and is there compressed, at right angles to said direction, to form a coherent body. The mould may be filled in layers, each layer being compressed before further filling. The moulded body may be a "tablet", several of which are stacked with their magnetic directions in alignment, heated and finally pressed. The magnetic material may be Al-Ni or Al-Ni-Co alloys, and magnetic oxides as of iron, barium or manganese and the particle size less than 0.1m . Metallic oxides may be subjected to heat treatment in a magnetic field before, or during, mixing with the binding agent, which may be of synthetic resin.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE329182X | 1953-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB750537A true GB750537A (en) | 1956-06-20 |
Family
ID=6186794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3670/54A Expired GB750537A (en) | 1953-02-06 | 1954-02-08 | Method of producing permanent magnets |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH329182A (en) |
FR (1) | FR1092081A (en) |
GB (1) | GB750537A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3849213A (en) * | 1966-09-01 | 1974-11-19 | M Baermann | Method of producing a molded anisotropic permanent magnet |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1263195B (en) * | 1962-04-24 | 1968-03-14 | Magnetfab Bonn Gmbh | Process for the production of anisotropic permanent magnets from powdered magnetic material |
DE102012208362A1 (en) * | 2012-05-18 | 2013-11-21 | Siemens Aktiengesellschaft | Process for producing a permanent magnet |
-
1954
- 1954-01-12 CH CH329182D patent/CH329182A/en unknown
- 1954-01-28 FR FR1092081D patent/FR1092081A/en not_active Expired
- 1954-02-08 GB GB3670/54A patent/GB750537A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3849213A (en) * | 1966-09-01 | 1974-11-19 | M Baermann | Method of producing a molded anisotropic permanent magnet |
Also Published As
Publication number | Publication date |
---|---|
FR1092081A (en) | 1955-04-18 |
CH329182A (en) | 1958-04-15 |
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