GB634686A - Improvements in or relating to permanent magnets - Google Patents
Improvements in or relating to permanent magnetsInfo
- Publication number
- GB634686A GB634686A GB2232047A GB2232047A GB634686A GB 634686 A GB634686 A GB 634686A GB 2232047 A GB2232047 A GB 2232047A GB 2232047 A GB2232047 A GB 2232047A GB 634686 A GB634686 A GB 634686A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- permanent magnets
- alloy
- cooling
- per
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
In a method of manufacturing anisotropic permanent magnets of the type consisting of 10-30 per cent Ni, 6-11 per cent Al, 12-30 per cent Co, 0.5 to 8 per cent Cu and the balance iron and unavoidable impurities but also containing 0.5-1 per cent Nb, the alloy is submitted to the action of a magnetic field while cooling from a high solution temperature, e.g. 1200-1300 DEG C, or a low solution temperature, e.g., 850-950 DEG C, through the Curie point, then to an ageing process and then to a further ageing process. The alloy may also contain one or more of the elements Si, S, Ti, W. V, or Zr in amounts not exceeding a total of 5 per cent and C, P, Cr, Mn, and Mo should not be present in excess of 1 per cent. The cooling through the Curie point may be at 0.5 to 1.5 DEG C per second and the ageing treatments may be 1 hour at 650-700 DEG C furnace cooled to 350-450 DEG C in 20-24 hours followed by 16 hours at 540-580 DEG C. Specifications 431,660, 439,543 and 496,774 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2232047A GB634686A (en) | 1947-08-12 | 1947-08-12 | Improvements in or relating to permanent magnets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2232047A GB634686A (en) | 1947-08-12 | 1947-08-12 | Improvements in or relating to permanent magnets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB634686A true GB634686A (en) | 1950-03-22 |
Family
ID=10177485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2232047A Expired GB634686A (en) | 1947-08-12 | 1947-08-12 | Improvements in or relating to permanent magnets |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB634686A (en) |
-
1947
- 1947-08-12 GB GB2232047A patent/GB634686A/en not_active Expired
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