GB743635A - Improvements in or relating to the manufacture of permanent magnets - Google Patents
Improvements in or relating to the manufacture of permanent magnetsInfo
- Publication number
- GB743635A GB743635A GB34761/53A GB3476153A GB743635A GB 743635 A GB743635 A GB 743635A GB 34761/53 A GB34761/53 A GB 34761/53A GB 3476153 A GB3476153 A GB 3476153A GB 743635 A GB743635 A GB 743635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cylinder
- heat
- mould
- casting
- insulating 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.)
- Expired
Links
Classifications
-
- 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
Abstract
743,635. Casting-processes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 14, 1953 [Dec. 17, 1952], No. 34761/53. Class 83 (1). In a method of casting anisotropic permanent magnets from an iron-base alloy containing Ni, Al and Co in which at least one of the pole faces is cooled, as by chill plates 3, 4, at least the major portion of the side-wall of the mould between the pole faces consists of metal sheet insulated against heat losses during casting. The mould cylinder 2 of molybdenum or iron sheet is insulated by a cylinder 1 of heat-insulating material which surrounds the cylinder 2 and forms an air-gap therewith, and by heat-insulating material 5 between the cylinder 2 and the plate 3. The casting- channel is at 6. In a modification, Fig. 2, in which the plate 4 is omitted, the molten alloy is poured through a channel 7 in a block of heat-insulating material into a space outside the cylinder 2 which is thereby heated and the alloy subsequently flows over the upper edge 8 into the mould which is vented at 9. In a further modification, Fig. 3 (not shown), a number of magnets are cast in a mould divided into separate moulds by sheet-metal partitions and surrounded by an outer heat-insulating wall.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL743635X | 1952-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB743635A true GB743635A (en) | 1956-01-18 |
Family
ID=19822774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34761/53A Expired GB743635A (en) | 1952-12-17 | 1953-12-14 | Improvements in or relating to the manufacture of permanent magnets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB743635A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3110943A (en) * | 1958-10-02 | 1963-11-19 | Inca Steel Company Ltd | Production of metal ingots, castings and the like |
| US3189957A (en) * | 1956-05-04 | 1965-06-22 | Philips Corp | Method of manufacturing permanent magnets by continuous castings |
| US3233294A (en) * | 1962-02-07 | 1966-02-08 | U S Magnet & Alloy Corp | Method and apparatus for casting vertically stacked magnet bodies |
| US3233295A (en) * | 1962-02-07 | 1966-02-08 | U S Magnet & Alloy Corp | Method for casting magnet bodies |
| DE1253739B (en) * | 1956-03-06 | 1967-11-09 | Binder Magnete K G | Method for producing a component made of soft magnetic material, in particular a rotationally symmetrical component |
-
1953
- 1953-12-14 GB GB34761/53A patent/GB743635A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1253739B (en) * | 1956-03-06 | 1967-11-09 | Binder Magnete K G | Method for producing a component made of soft magnetic material, in particular a rotationally symmetrical component |
| US3189957A (en) * | 1956-05-04 | 1965-06-22 | Philips Corp | Method of manufacturing permanent magnets by continuous castings |
| US3110943A (en) * | 1958-10-02 | 1963-11-19 | Inca Steel Company Ltd | Production of metal ingots, castings and the like |
| US3233294A (en) * | 1962-02-07 | 1966-02-08 | U S Magnet & Alloy Corp | Method and apparatus for casting vertically stacked magnet bodies |
| US3233295A (en) * | 1962-02-07 | 1966-02-08 | U S Magnet & Alloy Corp | Method for casting magnet bodies |
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