EP0634759A3 - Semi-hard and deformable iron based permanent magnet alloy. - Google Patents
Semi-hard and deformable iron based permanent magnet alloy. Download PDFInfo
- 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- Withdrawn
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)
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)
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)
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 |
-
1994
- 1994-07-06 JP JP6177622A patent/JPH0754107A/en active Pending
- 1994-07-06 EP EP94110507A patent/EP0634759A3/en not_active Withdrawn
Patent Citations (5)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
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AK | Designated contracting states |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19950307 |
|
R18W | Application withdrawn (corrected) |
Effective date: 19950307 |