EP0101922B1 - Procédé et dispositif pour traiter des matériaux ferro-magnétiques - Google Patents

Procédé et dispositif pour traiter des matériaux ferro-magnétiques Download PDF

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Publication number
EP0101922B1
EP0101922B1 EP83107298A EP83107298A EP0101922B1 EP 0101922 B1 EP0101922 B1 EP 0101922B1 EP 83107298 A EP83107298 A EP 83107298A EP 83107298 A EP83107298 A EP 83107298A EP 0101922 B1 EP0101922 B1 EP 0101922B1
Authority
EP
European Patent Office
Prior art keywords
pulses
treatment
control block
ferromagnetic materials
polarity
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
EP83107298A
Other languages
German (de)
English (en)
Other versions
EP0101922A1 (fr
Inventor
Boris Georgiev Dipl.-Ing. Makedonski
Janaki Rostislavov Dipl.-Ing. Blaskov
Ljubomir Pavlov Dipl.-Ing. Alipiev
Haralampi Angelov Dipl.-Ing. Atanassov
Nedeltscho Christov Dipl.-Ing. Todorov
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.)
ZENTRALEN MASCHINOSTROITELEN INSTITUT
Original Assignee
ZENTRALEN MASCHINOSTROITELEN INSTITUT
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 ZENTRALEN MASCHINOSTROITELEN INSTITUT filed Critical ZENTRALEN MASCHINOSTROITELEN INSTITUT
Priority to AT83107298T priority Critical patent/ATE17535T1/de
Publication of EP0101922A1 publication Critical patent/EP0101922A1/fr
Application granted granted Critical
Publication of EP0101922B1 publication Critical patent/EP0101922B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a method and a device for treating ferromagnetic materials for use in mechanical engineering.
  • a method for treating ferromagnetic materials by means of a pulse magnetic field with single-pole magnetic pulses with a specific pulse repetition frequency, amplitude and length is known.
  • the ferromagnetic material to be treated is introduced into the magnetic field of the inductor, after which it is subjected to complete demagnetization.
  • a device for performing the method which consists of a series connection of a power source, a generator for single-pole electrical pulses, which can be regulated according to amplitude and frequency, and a power block with an inductor, in the magnetic field of which the ferromagnetic material to be treated is introduced; there is also a control block connected to the power source.
  • a disadvantage of the method and the device is the low wear resistance of the ferromagnetic materials.
  • the object on which the invention is based is to specify a method and a device for treating ferromagnetic materials with increased wear resistance.
  • the object of the invention is achieved by a method in which the ferromagnetic material is treated in a bipolar magnetic field with a certain length and repetition frequency of the pulses and the ratio between the amplitudes of the positive and negative pulses of 1.8 to 0.2.
  • the pulses of one polarity have a uniform or lower frequency compared to the repetition frequency of the pulses of the other polarity.
  • the bipolar magnetic pulses gradually decrease.
  • the device contains a power supply source which is connected to a control block and a generator.
  • a stabilized, adjustable rectifier is connected to the power supply source and the control block.
  • the power block with an inductor consists of two parts, each of which consists of a series connection of capacitor and coil and a thyristor connected in parallel.
  • the anodes of the thyristors are connected to the stabilized, adjustable rectifier, their control electrodes are connected to the generator.
  • the control block is connected to a trigger.
  • the drawing shows the block diagram of an embodiment of the device according to the invention.
  • the device consists of a power supply source 1, which is connected to a stabilized, adjustable rectifier 2, a generator 3 and a control block 4.
  • the control block 4 is connected to the stabilized, adjustable rectifier 2 and the generator 3.
  • the supply voltage is simultaneously supplied to the current supply source 1 and the stabilized, adjustable rectifier 2.
  • the power block with inductor 5 consists of two parts, each of which consists of a series connection of capacitor 6 and coil 7 and a thyristor 8 connected in parallel.
  • the anodes of the two thyristors 8 are each connected to an output of the stabilized, adjustable rectifier 2. Your cathodes are grounded.
  • the control electrodes of the thyristors 8 are connected to the two outputs of the generator 3.
  • the ferromagnetic material 9 to be treated is introduced into the field generated by the coils 7;
  • a trigger 10 is arranged in front of the coils 7 and is connected to the control block 4.
  • the coils 7 can also have a magnetic conductor, not shown.
  • the operation of the device is as follows: depending on the type of ferromagnetic material to be treated, a certain program is entered in the control block 4. With the introduction of the ferromagnetic material 9 to be treated into the field generated by the coils 7, the trigger 10 actuates the control block 4, which supplies the stabilized, adjustable rectifier 2 and the generator 3 with control pulses. Control pulses are supplied from generator 3 to the two parts of the power block with inductor 5. Both thyristors 8 open one after the other, the field of coils 7 being bipolar. Each polarity is determined by which one of the coils 7 has been actuated by the corresponding thyristor 8. The amplitude is changed by the voltage supplied by the stabilized, controllable current rectifier 2. After the time entered in advance by the program has elapsed, signals are generated and fed from the control block 4 to the stabilized, adjustable rectifier 2, which gradually begins to reduce the supply voltage of the two thyristors 8 to zero.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Magnetic Treatment Devices (AREA)
  • Chemical Vapour Deposition (AREA)
  • Feedback Control In General (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Liquid Crystal Substances (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Vending Machines For Individual Products (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Soft Magnetic Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Hard Magnetic Materials (AREA)

Claims (2)

1. Procédé pour le traitement de matériaux ferro-magnétiques, selon lequel on soument les matériaux (9) à un champ magnétique pulsé dont les impulsions ont une fréquence de pulsation, une amplitude et une longueur déterminées, et on les désaimante à la fin du traitement, caractérisé en ce que le champ pulsé est bipolaire avec un rapport de 1,8 à 0,2 entre les amplitudes positives et négatives, les impulsions présentant l'une des polarités ayant une fréquence de pulsation égale ou inférieure à celle'des impulsions présentant l'autre polarité.
2. Dispositif pour le traitement de matériaux ferro-magnétiques pour la mise en oeuvre du procédé selon le préambule de la revendication l,comprenant une source d'alimentation en courant (1), qui est raccordée à un bloc de commande (4) et à un générateur (3) qui est relié à un bloc de puissance (5) muni d'un inducteur, caractérisé par un redresseur stabilisé réglable (2) qui est raccordé à la source d'alimentation en courant (1) et au bloc de commande (4), le bloc de puissance (5) muni de l'inducteur étant - constitué de deux parties qui sont formées par un circuit série formé d'un condensateur (6) et d'une bobine (7) et par un thyristor (8) monté en parallèle avec ce circuit, les anodes des thyristors (8) étant reliées au redressur stabilisé réglable (2), tandis que les électrodes de commande sont reliées au générateur (3) et qu'un circuit de déclenchement (10) est raccordé au bloc de commande (4).
EP83107298A 1982-07-27 1983-07-25 Procédé et dispositif pour traiter des matériaux ferro-magnétiques Expired EP0101922B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107298T ATE17535T1 (de) 1982-07-27 1983-07-25 Verfahren und vorrichtung zur behandlung von ferromagnetischen werkstoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG57551/82 1982-07-27
BG8257551A BG38909A1 (en) 1982-07-27 1982-07-27 Method and device for acting on ferromagnetic materials

Publications (2)

Publication Number Publication Date
EP0101922A1 EP0101922A1 (fr) 1984-03-07
EP0101922B1 true EP0101922B1 (fr) 1986-01-15

Family

ID=3911066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107298A Expired EP0101922B1 (fr) 1982-07-27 1983-07-25 Procédé et dispositif pour traiter des matériaux ferro-magnétiques

Country Status (8)

Country Link
EP (1) EP0101922B1 (fr)
JP (1) JPS5972115A (fr)
AT (1) ATE17535T1 (fr)
AU (2) AU1722983A (fr)
BG (1) BG38909A1 (fr)
CA (1) CA1223303A (fr)
CS (1) CS256908B1 (fr)
DE (1) DE3361854D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG41281A1 (en) * 1985-07-29 1987-05-15 Makedonski Device for magneto- impulse treatment of ferromagnetic materials
EP1513168B1 (fr) * 2003-09-02 2017-03-08 Albert Maurer Méthode et dispositif de magnétisation d'un système magnétique
US7868721B2 (en) * 2008-04-04 2011-01-11 Cedar Ridge Research, Llc Field emission system and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD146726A1 (de) * 1979-10-22 1981-02-25 Siegfried Wirthgen Verfahren zur erzeugung von gleichstromimpulsen in spulen von elektromagneten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790729A (fr) * 1971-11-19 1973-02-15 Lenoir Raoul Ets Dispositif de commande de courant d'excitation d'une bobine produisant un flux magnetique de polarite inversable
CH582411A5 (fr) * 1975-03-03 1976-11-30 Bbc Brown Boveri & Cie
US4158873A (en) * 1977-08-31 1979-06-19 Magnaflux Corporation Demagnetizing methods and apparatus
IT1119003B (it) * 1979-06-25 1986-03-03 Riv Officine Di Villar Perosa Dispositivo smagnetizzatore
IT1141165B (it) * 1980-02-06 1986-10-01 Sdm Sistemi & Dispositivi Magn Sistema e disposizione circuitale per la smagnetizzazione di magneti permanenti

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD146726A1 (de) * 1979-10-22 1981-02-25 Siegfried Wirthgen Verfahren zur erzeugung von gleichstromimpulsen in spulen von elektromagneten

Also Published As

Publication number Publication date
BG38909A1 (en) 1986-03-14
AU1722983A (en) 1984-02-02
CA1223303A (fr) 1987-06-23
JPS5972115A (ja) 1984-04-24
ATE17535T1 (de) 1986-02-15
CS256908B1 (en) 1988-04-15
AU1377388A (en) 1988-07-07
EP0101922A1 (fr) 1984-03-07
DE3361854D1 (en) 1986-02-27

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