GB652022A - Improvements in or relating to the manufacture of permanent magnets - Google Patents
Improvements in or relating to the manufacture of permanent magnetsInfo
- Publication number
- GB652022A GB652022A GB2996048A GB2996048A GB652022A GB 652022 A GB652022 A GB 652022A GB 2996048 A GB2996048 A GB 2996048A GB 2996048 A GB2996048 A GB 2996048A GB 652022 A GB652022 A GB 652022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- cavities
- alloy
- temperature
- pouring
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 abstract 5
- 239000000956 alloy Substances 0.000 abstract 5
- 238000005266 casting Methods 0.000 abstract 5
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 238000005275 alloying Methods 0.000 abstract 1
- -1 aluminium-nickel-cobalt-iron Chemical compound 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 abstract 1
- 239000010955 niobium Substances 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011819 refractory material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 229910052715 tantalum Inorganic materials 0.000 abstract 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 229910052720 vanadium Inorganic materials 0.000 abstract 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/06—Special casting characterised by the nature of the product by its physical properties
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
652,022. Casting processes ; moulds ; mould materials. SWIFT LEVICK & SONS, Ltd., and HORSBURGH, G. D. L. Nov. 18, 1948, No. 29960. [Class 83 (i)] A method of casting a permanent magnet comprises pouring an alloy of the aluminiumnickel-iron or aluminium-nickel-cobalt-iron type with or without copper or other alloying constituent, from a recess 5 through gates 4 into cavities 3 in a mould 1 heated prior to or simultaneously with the pouring to delay the cooling via the sides of the mould cavities and chilling the cavities at one end by means of a chill plate 2, which may be solid or watercooled., to induce the formation of columnar crystals in a direction normal to that end, the alloy being poured at a temperature of at least 1500‹ C. to maintain the castings fluid until columnar crystals have grown substantially throughout the entire length of each casting. In one method, the alloy is raised to a temperature, e.g. of 1600‹ C. and upwards, substantially in excess of the normal pouring temperature, and the mould may be heated to a temperature in the range 600‹ to 1200‹ C. In another method, the pouring of the alloy is carried out at the usual temperature, i.e. about 1500 C. the alloy containing a metallic element, e.g. niobium, tantalum, molybdenum, titanium, tungsten, or vanadium or a combination of elements to retard the rate of setting. The mould may be made of or lined with insulating or refractory material or be of metal, e.g. steel or cast iron, suitably lined. Further, the mould may comprise a heated top part with holes forming gates leading to the mould cavities which is placed on a heated mould of a thickness equal to the length required for the cavities. In another construction, the same molten metal as is to form the castings is used to heat the mould to lessen the rate of transverse heat loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2996048A GB652022A (en) | 1948-11-18 | 1948-11-18 | Improvements in or relating to the manufacture of permanent magnets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2996048A GB652022A (en) | 1948-11-18 | 1948-11-18 | Improvements in or relating to the manufacture of permanent magnets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB652022A true GB652022A (en) | 1951-04-11 |
Family
ID=10299999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2996048A Expired GB652022A (en) | 1948-11-18 | 1948-11-18 | Improvements in or relating to the manufacture of permanent magnets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB652022A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821759A (en) * | 1952-12-17 | 1958-02-04 | Philips Corp | Method of manufacturing permanent magnets from an iron-base alloy containing ni, al, and co as principal elements |
| 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 |
| US3234609A (en) * | 1960-01-28 | 1966-02-15 | Riken Piston Ring Ind Co Ltd | Method of making magnetically anisotropic permanent magnets |
| US3248764A (en) * | 1964-01-08 | 1966-05-03 | Trw Inc | Method for improving grain structure and soundness in castings |
-
1948
- 1948-11-18 GB GB2996048A patent/GB652022A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821759A (en) * | 1952-12-17 | 1958-02-04 | Philips Corp | Method of manufacturing permanent magnets from an iron-base alloy containing ni, al, and co as principal elements |
| US3110943A (en) * | 1958-10-02 | 1963-11-19 | Inca Steel Company Ltd | Production of metal ingots, castings and the like |
| US3234609A (en) * | 1960-01-28 | 1966-02-15 | Riken Piston Ring Ind Co Ltd | Method of making magnetically anisotropic permanent magnets |
| 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 |
| US3248764A (en) * | 1964-01-08 | 1966-05-03 | Trw Inc | Method for improving grain structure and soundness in castings |
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