EP0184637A3 - Process for the manufacture of a magnetic switch element which will demagnetize fast also in a slowly changing magnetic field - Google Patents

Process for the manufacture of a magnetic switch element which will demagnetize fast also in a slowly changing magnetic field Download PDF

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Publication number
EP0184637A3
EP0184637A3 EP85113068A EP85113068A EP0184637A3 EP 0184637 A3 EP0184637 A3 EP 0184637A3 EP 85113068 A EP85113068 A EP 85113068A EP 85113068 A EP85113068 A EP 85113068A EP 0184637 A3 EP0184637 A3 EP 0184637A3
Authority
EP
European Patent Office
Prior art keywords
manufacture
switch element
slowly changing
magnetic field
magnetic switch
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
EP85113068A
Other languages
German (de)
Other versions
EP0184637B1 (en
EP0184637A2 (en
Inventor
Gerd Dipl.-Phys. Rauscher
Christian Dr. Radeloff
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Vacuumschmelze GmbH and Co KG
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 Vacuumschmelze GmbH and Co KG filed Critical Vacuumschmelze GmbH and Co KG
Priority to AT85113068T priority Critical patent/ATE65640T1/en
Publication of EP0184637A2 publication Critical patent/EP0184637A2/en
Publication of EP0184637A3 publication Critical patent/EP0184637A3/en
Application granted granted Critical
Publication of EP0184637B1 publication Critical patent/EP0184637B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0304—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions adapted for large Barkhausen jumps or domain wall rotations, e.g. WIEGAND or MATTEUCCI effect
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0306—Metals or alloys, e.g. LAVES phase alloys of the MgCu2-type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Superconductor Devices And Manufacturing Methods Thereof (AREA)
  • Measuring Magnetic Variables (AREA)
  • Hard Magnetic Materials (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

A process for the manufacture of a magnetic switch element is specified. A fine-crystalline structure is produced by short-term annealing of a cobalt-iron-vanadium alloy at 630 to 900 DEG C, which leads to pulse voltages of over 10 volts when subjected to a slowly changing field under tensional stress in a coil with 1000 windings. This property is reproducible so that inductively operating sensors can be manufactured, for example, for speed transmitters operating down to zero speed.
EP85113068A 1984-11-09 1985-10-15 Process for the manufacture of a magnetic switch element which will demagnetize fast also in a slowly changing magnetic field Expired - Lifetime EP0184637B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113068T ATE65640T1 (en) 1984-11-09 1985-10-15 PROCESS FOR MANUFACTURING A MAGNETIC SWITCHING ELEMENT THAT QUICKLY REMAGNETIZES EVEN IF THE FIELD CHANGES SLOWLY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440918 1984-11-09
DE19843440918 DE3440918A1 (en) 1984-11-09 1984-11-09 METHOD FOR PRODUCING A MAGNETIC SWITCHING ELEMENT, WHICH RE-MAGNETIZES FAST, EVEN WITH SLOW FIELD CHANGE

Publications (3)

Publication Number Publication Date
EP0184637A2 EP0184637A2 (en) 1986-06-18
EP0184637A3 true EP0184637A3 (en) 1988-03-23
EP0184637B1 EP0184637B1 (en) 1991-07-24

Family

ID=6249864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113068A Expired - Lifetime EP0184637B1 (en) 1984-11-09 1985-10-15 Process for the manufacture of a magnetic switch element which will demagnetize fast also in a slowly changing magnetic field

Country Status (3)

Country Link
EP (1) EP0184637B1 (en)
AT (1) ATE65640T1 (en)
DE (2) DE3440918A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124776A1 (en) * 1991-07-26 1993-01-28 Schaeffler Waelzlager Kg Mfr. of pulse source with alternating magnetisable and non-magnetisable fields - involves deformation process subjecting source made of austenitic steel having face-centred cubic lattice
JPH08138919A (en) * 1994-11-04 1996-05-31 Nhk Spring Co Ltd Method and device for manufacture of magnetism-sensitive wire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458521A1 (en) * 1963-12-18 1968-12-19 Western Electric Co Magnetically operated switch
US3422407A (en) * 1964-10-20 1969-01-14 Bell Telephone Labor Inc Devices utilizing a cobalt-vanadium-iron magnetic material which exhibits a composite hysteresis loop
FR2389986A1 (en) * 1977-05-03 1978-12-01 Echlin Mfg Co

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458521A1 (en) * 1963-12-18 1968-12-19 Western Electric Co Magnetically operated switch
US3422407A (en) * 1964-10-20 1969-01-14 Bell Telephone Labor Inc Devices utilizing a cobalt-vanadium-iron magnetic material which exhibits a composite hysteresis loop
FR2389986A1 (en) * 1977-05-03 1978-12-01 Echlin Mfg Co

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PHYSIKALISCHE ZEITSCHRIFT, Band XXXIII, 1932, Seiten 913-923, S. Hirzel, Leipzig, DE; F. PREISACH: "Permeabilität und Hysterese bei Magnetisierung in der energetischen Vorzugsrichtung" *

Also Published As

Publication number Publication date
DE3440918A1 (en) 1986-05-15
EP0184637B1 (en) 1991-07-24
EP0184637A2 (en) 1986-06-18
DE3583589D1 (en) 1991-08-29
ATE65640T1 (en) 1991-08-15

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