JPS5791504A - Method and device for demagnetizing permanent magnet - Google Patents

Method and device for demagnetizing permanent magnet

Info

Publication number
JPS5791504A
JPS5791504A JP16663280A JP16663280A JPS5791504A JP S5791504 A JPS5791504 A JP S5791504A JP 16663280 A JP16663280 A JP 16663280A JP 16663280 A JP16663280 A JP 16663280A JP S5791504 A JPS5791504 A JP S5791504A
Authority
JP
Japan
Prior art keywords
permanent magnet
poles
electromagnet
coil
power source
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.)
Pending
Application number
JP16663280A
Other languages
Japanese (ja)
Inventor
Hideyuki Tanaka
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.)
TOUHOKU KINZOKU KOGYO KK
Tokin Corp
Original Assignee
TOUHOKU KINZOKU KOGYO KK
Tohoku Metal Industries Ltd
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 TOUHOKU KINZOKU KOGYO KK, Tohoku Metal Industries Ltd filed Critical TOUHOKU KINZOKU KOGYO KK
Priority to JP16663280A priority Critical patent/JPS5791504A/en
Publication of JPS5791504A publication Critical patent/JPS5791504A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material

Abstract

PURPOSE:To effectively demagnetize a permanent magnet to zero in a short time by rotating the permanent magnet between the poles of an electromagnet and applying single pulse electric field from the poles of the electromagnet to the permanent magnet. CONSTITUTION:A magnetic field generator 2 has a coil 2a and poles 3. Fixing means for fixing or containing a permanent magnet 1 is connected to a rotary drive unit such as a motor separately secured through a shaft 5a. A power source 7 for generating a pulsating current is connected to the coil 2a via a cable 6. The poles of the permanent magnet 1 are disposed in the same direction as the generator 2 and are mounted by fixing means 4 to the center of the poles 3, the means 4 is rotated by a motor 5 together with the permanent magnet 1, and an input pulse 8 from the power source 7 is applied thereto.
JP16663280A 1980-11-28 1980-11-28 Method and device for demagnetizing permanent magnet Pending JPS5791504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16663280A JPS5791504A (en) 1980-11-28 1980-11-28 Method and device for demagnetizing permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16663280A JPS5791504A (en) 1980-11-28 1980-11-28 Method and device for demagnetizing permanent magnet

Publications (1)

Publication Number Publication Date
JPS5791504A true JPS5791504A (en) 1982-06-07

Family

ID=15834877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16663280A Pending JPS5791504A (en) 1980-11-28 1980-11-28 Method and device for demagnetizing permanent magnet

Country Status (1)

Country Link
JP (1) JPS5791504A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123612A2 (en) * 1983-04-26 1984-10-31 THOMSON TUBES & DISPLAYS SA Apparatus for speedily adjusting the static convergence and the purity in a colour television tube by making use of a permanent magnet
JP2008258502A (en) * 2007-04-06 2008-10-23 Nippon Denji Sokki Kk Demagnetization apparatus and demagnetization method
JP2017130636A (en) * 2016-01-22 2017-07-27 株式会社メルビル Rotary device for demagnetization

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123612A2 (en) * 1983-04-26 1984-10-31 THOMSON TUBES & DISPLAYS SA Apparatus for speedily adjusting the static convergence and the purity in a colour television tube by making use of a permanent magnet
JP2008258502A (en) * 2007-04-06 2008-10-23 Nippon Denji Sokki Kk Demagnetization apparatus and demagnetization method
JP2017130636A (en) * 2016-01-22 2017-07-27 株式会社メルビル Rotary device for demagnetization

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