JPS5640207A - Magnetizing distribution control method for rare earth cobalt magnet - Google Patents

Magnetizing distribution control method for rare earth cobalt magnet

Info

Publication number
JPS5640207A
JPS5640207A JP11519979A JP11519979A JPS5640207A JP S5640207 A JPS5640207 A JP S5640207A JP 11519979 A JP11519979 A JP 11519979A JP 11519979 A JP11519979 A JP 11519979A JP S5640207 A JPS5640207 A JP S5640207A
Authority
JP
Japan
Prior art keywords
rare earth
magnetizing
earth cobalt
cobalt magnet
core rod
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.)
Granted
Application number
JP11519979A
Other languages
Japanese (ja)
Other versions
JPS598044B2 (en
Inventor
Tetsuo Hori
Junichi Shiraishi
Hiroshi Shimizu
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP54115199A priority Critical patent/JPS598044B2/en
Publication of JPS5640207A publication Critical patent/JPS5640207A/en
Publication of JPS598044B2 publication Critical patent/JPS598044B2/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To obtain a desired magnetizing distribution with simplicity, in the case of conducting forming process of a diameter-wise annular rare earth cobalt magnet in magnetic field, by changing magnetic characteristics of a core rod. CONSTITUTION:A bottom punch 4 is fit into a mortar 1, a powdery material 8 is put into a piercing hole 2 of the mortar 1 in a condition that a core rod 5 is stricking out, and while keeping a condition that electric current is passing through a coil 6, a top punch 3 is lowered for compression forming of the powdery material 8. And by further sintering and processing it, it is possible to obtain an annular power-sintered-type rare earth cobalt magnet having a magnetizing direction in diametrical direction. In this case, by changing magnetic characteristics of the core rod 5, it is possible to control magnetizing distribution of the diameter-wise annular magnet and to obtain a desired magnetizing distribution with simplicity.
JP54115199A 1979-09-10 1979-09-10 Magnetization distribution control method for rare earth cobalt magnets Expired JPS598044B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54115199A JPS598044B2 (en) 1979-09-10 1979-09-10 Magnetization distribution control method for rare earth cobalt magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54115199A JPS598044B2 (en) 1979-09-10 1979-09-10 Magnetization distribution control method for rare earth cobalt magnets

Publications (2)

Publication Number Publication Date
JPS5640207A true JPS5640207A (en) 1981-04-16
JPS598044B2 JPS598044B2 (en) 1984-02-22

Family

ID=14656803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54115199A Expired JPS598044B2 (en) 1979-09-10 1979-09-10 Magnetization distribution control method for rare earth cobalt magnets

Country Status (1)

Country Link
JP (1) JPS598044B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5091799A (en) * 1973-12-19 1975-07-22
JPS5138918A (en) * 1974-09-30 1976-03-31 Hitachi Ltd
JPS5227356A (en) * 1975-08-27 1977-03-01 Nec Corp Manufacturing process of silicon epitaxial wafer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5091799A (en) * 1973-12-19 1975-07-22
JPS5138918A (en) * 1974-09-30 1976-03-31 Hitachi Ltd
JPS5227356A (en) * 1975-08-27 1977-03-01 Nec Corp Manufacturing process of silicon epitaxial wafer

Also Published As

Publication number Publication date
JPS598044B2 (en) 1984-02-22

Similar Documents

Publication Publication Date Title
JPS6427208A (en) Cylindrical permanent magnet, motor using same and manufacture thereof
KR850000141A (en) Cylindrical permanent magnet manufacturing method
US5079534A (en) Electromagnet with press die and adjustable air gap
JPS5674907A (en) Manufacturing process of permanent magnet magnetized in radial direction
JPS5640207A (en) Magnetizing distribution control method for rare earth cobalt magnet
JPS57128909A (en) Manufacture of permanent magnet having a plurality of radial magnetic dipoles
JPS57173918A (en) Laminated inductor
GB1531317A (en) Method for the manufacture of permanent magnets
JPS57187914A (en) Formation of bipolar radial anisotropic magnet
JPS5739102A (en) Production of permanent magnet
US4056800A (en) Magnetic field aligning means
JPS5630706A (en) Method and device for formation of eare earth cobalt magnet in magnetic field
SU557874A1 (en) Mold for ring annular anisotropic magnets
JPS56125814A (en) Manufacture of cylindrical permanent magnet
GB2165395A (en) Magnetising apparatus for keys and rotors of magnetic safety lock systems
JPS55160404A (en) Manufacture of magnetically anisotropic permanent magnet and device thereof
JPH01124208A (en) Manufacture of diametrical bipolar magnet
JPS567406A (en) Pole piece material for magnet
JPS5398795A (en) Exciting method for superconduction magnet
JPS57173919A (en) Laminated transformer
JPS5697952A (en) Microwave ion source
JPS57103303A (en) Manufacture of permanent magnet in cylindrical shape
JPS5731109A (en) Manufacture of cylindrical anisotropic permanent magnet
JPS53115279A (en) Inspecting method of electromagnetic parts
SU1731432A1 (en) Device for manufacturing anisotropic permanent magnets from magnetically hard powders