EP0634759A3 - Semi-hard and deformable iron based permanent magnet alloy. - Google Patents

Semi-hard and deformable iron based permanent magnet alloy. Download PDF

Info

Publication number
EP0634759A3
EP0634759A3 EP94110507A EP94110507A EP0634759A3 EP 0634759 A3 EP0634759 A3 EP 0634759A3 EP 94110507 A EP94110507 A EP 94110507A EP 94110507 A EP94110507 A EP 94110507A EP 0634759 A3 EP0634759 A3 EP 0634759A3
Authority
EP
European Patent Office
Prior art keywords
semi
hard
permanent magnet
iron based
magnet alloy
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.)
Withdrawn
Application number
EP94110507A
Other versions
EP0634759A2 (en
Inventor
Gernot Dr. Hausch
Gerhard Zieger
Ottmar Roth
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
Publication of EP0634759A2 publication Critical patent/EP0634759A2/en
Publication of EP0634759A3 publication Critical patent/EP0634759A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • G08B13/2411—Tag deactivation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following hot rolling
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
    • 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
    • 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
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • 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
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
EP94110507A 1993-07-14 1994-07-06 Semi-hard and deformable iron based permanent magnet alloy. Withdrawn EP0634759A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4323497 1993-07-14
DE4323497 1993-07-14

Publications (2)

Publication Number Publication Date
EP0634759A2 EP0634759A2 (en) 1995-01-18
EP0634759A3 true EP0634759A3 (en) 1995-02-22

Family

ID=6492736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110507A Withdrawn EP0634759A3 (en) 1993-07-14 1994-07-06 Semi-hard and deformable iron based permanent magnet alloy.

Country Status (2)

Country Link
EP (1) EP0634759A3 (en)
JP (1) JPH0754107A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998026434A1 (en) * 1996-12-13 1998-06-18 Vacuumschmelze Gmbh Display unit for use in a magnetic anti-theft system
DE19740908C1 (en) * 1997-09-17 1999-08-05 Vacuumschmelze Gmbh Indicator for use in a magnetic anti-theft system and method of making an activation strip therefor
IL155198A0 (en) * 2000-10-10 2003-11-23 Crs Holdings Inc Soft magnetic steel alloys
JP6868174B2 (en) * 2019-10-10 2021-05-12 マグネデザイン株式会社 Stainless magnet

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1282444A (en) * 1960-03-04 1962-01-19 Beteiligungs & Patentverw Gmbh Advanced magnetic alloy with rectangular magnetization characteristic, its production process and its use
FR2282736A1 (en) * 1974-08-21 1976-03-19 Hitachi Ltd Steel alloy rotor for fast hysteresis motor - has steel alloy of specified composition to give desired properties
US4007073A (en) * 1974-10-15 1977-02-08 Felix Lvovich Levin Method of producing articles having alternating magnetic and non-magnetic portions from continuous metal blanks
EP0239838A1 (en) * 1986-04-04 1987-10-07 Vacuumschmelze GmbH Application of a fast quenched alloy to an iron-chrome-cobalt base
JPH04254303A (en) * 1991-02-06 1992-09-09 Toshiba Corp Parmanent magnet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1282444A (en) * 1960-03-04 1962-01-19 Beteiligungs & Patentverw Gmbh Advanced magnetic alloy with rectangular magnetization characteristic, its production process and its use
FR2282736A1 (en) * 1974-08-21 1976-03-19 Hitachi Ltd Steel alloy rotor for fast hysteresis motor - has steel alloy of specified composition to give desired properties
US4007073A (en) * 1974-10-15 1977-02-08 Felix Lvovich Levin Method of producing articles having alternating magnetic and non-magnetic portions from continuous metal blanks
EP0239838A1 (en) * 1986-04-04 1987-10-07 Vacuumschmelze GmbH Application of a fast quenched alloy to an iron-chrome-cobalt base
JPH04254303A (en) * 1991-02-06 1992-09-09 Toshiba Corp Parmanent magnet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 17, no. 32 (E - 1309) 21 January 1993 (1993-01-21) *

Also Published As

Publication number Publication date
EP0634759A2 (en) 1995-01-18
JPH0754107A (en) 1995-02-28

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