JPS6445108A - Treatment of magnetism of magnetic body - Google Patents

Treatment of magnetism of magnetic body

Info

Publication number
JPS6445108A
JPS6445108A JP20231587A JP20231587A JPS6445108A JP S6445108 A JPS6445108 A JP S6445108A JP 20231587 A JP20231587 A JP 20231587A JP 20231587 A JP20231587 A JP 20231587A JP S6445108 A JPS6445108 A JP S6445108A
Authority
JP
Japan
Prior art keywords
curve
residual magnetism
sample
magnetic body
magnetism
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
JP20231587A
Other languages
Japanese (ja)
Inventor
Norio Tsujimura
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.)
Shimadzu Corp
Original Assignee
Shimadzu 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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP20231587A priority Critical patent/JPS6445108A/en
Publication of JPS6445108A publication Critical patent/JPS6445108A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Magnetic Variables (AREA)

Abstract

PURPOSE:To shorten the time for aligning permanent magnetism to a specified objective value or less, by decreasing a current value at an optimum decreasing rate, which is computed based on the attenuating degrees of a residual magnetism curve of a sample and a residual magnetism curve of a magnetic body to be treated. CONSTITUTION:The B-H curve of a sample having the same quality as that of a ship 1, which is a magnetic body to be treated, is measured and stored in advance. Positive and negative currents are gradually decreased at a specified decreasing rate and made to flow through a coil 1a. Residual magnetism for each shot is measured with a magnetism detector 4. The residual magnetism of the sample and that of the magnetic body to be treated 1 are compared at an arbitrary shot. The optimum decreasing rate to the final shot is computed based on the attenuating degrees of the residual magnetism curve of the sample and the residual magnetism curve of the magnetic body to be treated. Thereafter, the current value is decreased at the optimum decreasing rate. The decreasing rate is changed at the arbitrary shot so that the B-H curve of the sample is approached in this way. Thus, the intended residual magnetism can be finally reached in the shortest time.
JP20231587A 1987-08-13 1987-08-13 Treatment of magnetism of magnetic body Pending JPS6445108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20231587A JPS6445108A (en) 1987-08-13 1987-08-13 Treatment of magnetism of magnetic body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20231587A JPS6445108A (en) 1987-08-13 1987-08-13 Treatment of magnetism of magnetic body

Publications (1)

Publication Number Publication Date
JPS6445108A true JPS6445108A (en) 1989-02-17

Family

ID=16455511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20231587A Pending JPS6445108A (en) 1987-08-13 1987-08-13 Treatment of magnetism of magnetic body

Country Status (1)

Country Link
JP (1) JPS6445108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH092385A (en) * 1995-06-26 1997-01-07 Tech Res & Dev Inst Of Japan Def Agency Permanent magnetic demagnetization method for ships

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH092385A (en) * 1995-06-26 1997-01-07 Tech Res & Dev Inst Of Japan Def Agency Permanent magnetic demagnetization method for ships

Similar Documents

Publication Publication Date Title
JPS5654523A (en) Controller for stopping main axle at fixed position
EP0295011A3 (en) Self regulating heater
CA2046165A1 (en) Method and apparatus for shaping a magnetic field
JPS6445108A (en) Treatment of magnetism of magnetic body
SE7711722L (en) KIT FOR PROTECTIVE MAGNETIZATION OF SHIPS
JPS5226498A (en) Permanent magnet and its manufactured process
ES8607738A1 (en) Apparatus for magnetic field therapy with vector field coils.
JPS56137532A (en) Optical pickup driving device
CA2012294A1 (en) Magnetic devices with enhanced poles
JPS53146922A (en) Heat treating method for amorphous metal body in magnetic field
JPS5398795A (en) Exciting method for superconduction magnet
JPS57118619A (en) High speed sputtering device for ferromagnetic material
Martin et al. Crystalline and Magnetic Structures in REAl sub x Ga sub 2 x Systems(RE= Neodymium, Erbium; O<= x<= 2). II.--Magnetic Structures
JPS57196513A (en) Choke coil of switching regulator or the like
Schneider et al. The Phase Diagram of Fe--Nd--B and the Optimization of the Microstructure of Sintered Magnets
Dolgikh et al. The Effect of Elastic Stresses on the Magnetization Processes in the Compound SmFe sub 2
JPS5441221A (en) Amorphous alloy and stabilizing method for magnetic characteristics theereof
JPS5299764A (en) Magnetic field type electron lens
JPS56157200A (en) Speaker
JPS52136578A (en) Electron beam exposure apparatus
JPS5212498A (en) Magnetic alloy
Petrakovskii A Study by the Monte Carlo Method of the Ising Model with Random Exchange Bonds
JPS5730127A (en) Movable light emitting element
JPS55103708A (en) Control of electromagnetic solenoid
Amitin et al. The Anomaly in the Electrical Resistivity of Rare-Earth Metals Having a'Simple-Spiral' Magnetic Structure in the Vicinity of the Neel Point