Title:
強磁性体における非ヒステリシス磁気の除去
Document Type and Number:
Japanese Patent JP6612023
Kind Code:
B2
Abstract:
The aim is to improve the demagnetisation of ferromagnetic components by means of simple enhancements of a demagnetising device in such a manner that, in spite of the demagnetisation at approximately room temperature, ferromagnetic components with vanishingly low residual magnetism, as was previously only achievable by means of thermal demagnetisation, are achieved. This is achieved in that a chamber with walls made from magnetically highly-permeable ferromagnetic material for shielding from external interference fields, for example the magnetic field of the Earth, is used in the demagnetising coil of a demagnetising device, whereby an interference-field-free chamber interior is pushed with a reduction of the interference field strength in the chamber interior to such a small magnetic interference field, that the residual magnetism at the treated objects has a lower value after demagnetisation than the interference field outside of the chamber space.
Inventors:
Urs, Meyer
ALBERT MAURER
ALBERT MAURER
Application Number:
JP2014181515A
Publication Date:
November 27, 2019
Filing Date:
September 05, 2014
Export Citation:
Assignee:
ALBERT MAURER
International Classes:
H01F13/00
Domestic Patent References:
| JP2005196928A | ||||
| JP55165700A | ||||
| JP2000953Y2 | ||||
| JP2008288328A | ||||
| JP2009294062A | ||||
| JP2007194260A |
Foreign References:
| US2848660 | ||||
| WO2001020621A1 |
Attorney, Agent or Firm:
Takeshi Sekine
Hirohito Katsunuma
Yasukazu Sato
Yasushi Kawasaki
Hiroshi Yoshimoto
Hirohito Katsunuma
Yasukazu Sato
Yasushi Kawasaki
Hiroshi Yoshimoto