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GB989992A - The forming of crystalline structures in alnico alloy workpieces - Google Patents

The forming of crystalline structures in alnico alloy workpieces

Info

Publication number
GB989992A
GB989992A GB662363A GB662363A GB989992A GB 989992 A GB989992 A GB 989992A GB 662363 A GB662363 A GB 662363A GB 662363 A GB662363 A GB 662363A GB 989992 A GB989992 A GB 989992A
Authority
GB
United Kingdom
Prior art keywords
temperature
zone
forming
magnet
temperature gradient
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
Application number
GB662363A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAGNETFAB GEWERKSCH WINDHORST
Original Assignee
MAGNETFAB GEWERKSCH WINDHORST
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAGNETFAB GEWERKSCH WINDHORST filed Critical MAGNETFAB GEWERKSCH WINDHORST
Publication of GB989992A publication Critical patent/GB989992A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

Permanent magnet alloys containing in percentage by weight .Co.10-40 .Ni.10-22 .Al.5-14 .Cu.0-10 .Ti.0-10 .Si.0-3 .Fe.balance are heat treated to produce columnar crystallization by heating them to the secondary recrystallization temperature and subjecting them to a temperature gradient in the direction of the desired structure and moving the magnet in the direction of the lower temperature zone, the region of the magnet being subjected to the temperature gradient being surrounded by a heated ceramic jacket to maintain a substantially uniform temperature over the cross-section. As shown in Fig. 2, workpiece 1 moves through high temperaure zone 2 to lower-temperature zone 3, the region subjected to the resultant temperature gradient being enclosed in ceramic jacket 4 in which are disposed heating elements 5. <PICT:0989992/C6-C7/1>
GB662363A 1962-02-21 1963-02-19 The forming of crystalline structures in alnico alloy workpieces Expired GB989992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM51887A DE1179968B (en) 1962-02-21 1962-02-21 Process for the production of recrystallization textures in metallic permanent magnets

Publications (1)

Publication Number Publication Date
GB989992A true GB989992A (en) 1965-04-22

Family

ID=7307285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB662363A Expired GB989992A (en) 1962-02-21 1963-02-19 The forming of crystalline structures in alnico alloy workpieces

Country Status (2)

Country Link
DE (1) DE1179968B (en)
GB (1) GB989992A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772090A (en) * 1971-07-22 1973-11-13 Gen Electric Alloy microstructure control

Also Published As

Publication number Publication date
DE1179968B (en) 1964-10-22

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