GB1369903A - Self nucleating magnetic wire - Google Patents

Self nucleating magnetic wire

Info

Publication number
GB1369903A
GB1369903A GB4051771A GB4051771A GB1369903A GB 1369903 A GB1369903 A GB 1369903A GB 4051771 A GB4051771 A GB 4051771A GB 4051771 A GB4051771 A GB 4051771A GB 1369903 A GB1369903 A GB 1369903A
Authority
GB
United Kingdom
Prior art keywords
wire
aug
inches
shell
manufacture
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
GB4051771A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1369903A publication Critical patent/GB1369903A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/642—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent self supporting magnetic material, e.g. magnetisable wires
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/06—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using single-aperture storage elements, e.g. ring core; using multi-aperture plates in which each individual aperture forms a storage element
    • G11C11/06085—Multi-aperture structures or multi-magnetic closed circuits, each aperture storing a "bit", realised by rods, plates, grids, waffle-irons,(i.e. grooved plates) or similar devices
    • 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

Abstract

1369903 Heat treating magnetic wire J R WIEGAND and M VELINSKY 31 Aug 1971 [2 Nov 1970 26 April 1971 19 Aug 1971] 40517/71 Headings C7A and N [Also in Division H3] A magnetic wire has a generally uniform composition and is treated so that its inner and outer portions have different magnetic properties such as low and high coercivity or retentivity. Manufacture: the material is 48% Fe, 52% Ni, with a diameter of 0À001-0À03 inches, the highest signal to noise ratio coming from wires of 0À009-0À015 inches. The wire is made by heat treating and work hardening a conventional wire, as in Fig.9. The wire is taken from reel 86 and annealed at furnace 102 to make it uniformly soft, and then passed to a hardening station 91 where it passes through induction coils separated by water cooling sprays, Fig.10. The first induction coil heats the wire to 1720‹F, and successive coils to lower temperatures. The sprays cool the shell to about 1100‹F. Rollers 92 establish a strain of 2¢% in the wire, the result being that the core and shell have different coercivities. In another method of manufacture wire is drawn from a rod at a high enough temperature to produce a fine grain structure and then work hardened by stretching and twisting the wire to and fro. If the wire is left in a twisted state a helical easy axis is produced. Fe-Ni alloys containing Co may also be used.
GB4051771A 1970-11-02 1971-08-31 Self nucleating magnetic wire Expired GB1369903A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8616970A 1970-11-02 1970-11-02
US13756771A 1971-04-26 1971-04-26
US17307071A 1971-08-19 1971-08-19

Publications (1)

Publication Number Publication Date
GB1369903A true GB1369903A (en) 1974-10-09

Family

ID=27375337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4051771A Expired GB1369903A (en) 1970-11-02 1971-08-31 Self nucleating magnetic wire

Country Status (13)

Country Link
JP (1) JPS5515797B1 (en)
AR (1) AR197774A1 (en)
BE (1) BE771956A (en)
CA (1) CA969272A (en)
CH (1) CH564243A5 (en)
DE (1) DE2143326A1 (en)
ES (2) ES394664A1 (en)
FR (1) FR2112927A5 (en)
GB (1) GB1369903A (en)
IL (1) IL37613A (en)
IT (1) IT939766B (en)
NL (1) NL175478C (en)
SE (1) SE377627B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258538A1 (en) * 2000-07-17 2002-11-20 NHK Spring Co., Ltd. Magnetic marker and its manufacturing method

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008527C2 (en) * 1980-03-06 1982-04-29 Fa. Dr. Eugen Dürrwächter DODUCO, 7530 Pforzheim Circuit arrangement for the digital remote transmission of signals
DE3008583A1 (en) * 1980-03-06 1981-09-10 Fa. Dr. Eugen Dürrwächter DODUCO, 7530 Pforzheim PULSE TRANSFORMER
DE3008526C2 (en) * 1980-03-06 1981-11-26 Fa. Dr. Eugen Dürrwächter DODUCO, 7530 Pforzheim DC limit switch
DE3014783C2 (en) * 1980-04-17 1981-12-24 Fa. Dr. Eugen Dürrwächter DODUCO, 7530 Pforzheim Pulse generator
JPS5843667A (en) * 1981-09-09 1983-03-14 Sony Corp Display device
DE3152008C1 (en) * 1981-12-31 1983-07-07 Fried. Krupp Gmbh, 4300 Essen Elongated magnetic switching core
DE3205586C2 (en) * 1982-02-17 1985-10-03 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Electromechanical locking device for magnetic keys
DE3225499C2 (en) * 1982-07-08 1984-05-24 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Magnetic proximity sensor
DE3225500A1 (en) * 1982-07-08 1984-01-12 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim MAGNETIC PROBE
DE3729418A1 (en) * 1987-09-03 1989-03-16 Vacuumschmelze Gmbh SPOOL CORE FOR AN INDUCTIVE, FREQUENCY-INDEPENDENT SWITCHING DEVICE
DE3741780A1 (en) * 1987-12-10 1989-06-29 Karl Harms Handels Gmbh & Co K MAGNETIC THEFT OR BURGLAR SECURITY SYSTEM AND SENSOR METAL ELEMENT SUITABLE FOR THIS
DE3829269A1 (en) * 1988-08-30 1990-03-01 Leybold Ag INDICATOR TO DETECT THE EXCEEDMENT OF A PARTICULAR FIELD STRENGTH OF A MAGNETIC FIELD
DE10259223B3 (en) * 2002-11-20 2004-02-12 Mehnert, Walter, Dr. Position detector registering rotary- or linear motion, includes excitation magnet, ferromagnetic component, coil and sensor
DE102017002939B3 (en) 2017-03-24 2018-07-19 Sew-Eurodrive Gmbh & Co Kg Device, in particular machine, for producing Wiegand wire from a wire, in particular pulse wire, and method for operating the device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299034B (en) * 1961-07-20 1969-07-10 Sperry Rand Corp Parametron
GB1052649A (en) * 1964-06-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1258538A1 (en) * 2000-07-17 2002-11-20 NHK Spring Co., Ltd. Magnetic marker and its manufacturing method
EP1258538A4 (en) * 2000-07-17 2004-05-12 Nhk Spring Co Ltd Magnetic marker and its manufacturing method
US6864793B2 (en) 2000-07-17 2005-03-08 Nhk Spring Co., Ltd. Magnetic marker and manufacturing method therefor

Also Published As

Publication number Publication date
IL37613A0 (en) 1971-11-29
IT939766B (en) 1973-02-10
AR197774A1 (en) 1974-05-10
JPS5515797B1 (en) 1980-04-25
ES394664A1 (en) 1974-09-16
ES198819U (en) 1975-06-16
IL37613A (en) 1974-05-16
FR2112927A5 (en) 1972-06-23
ES198819Y (en) 1975-11-16
SE377627B (en) 1975-07-14
NL175478B (en) 1984-06-01
NL175478C (en) 1984-11-01
CA969272A (en) 1975-06-10
CH564243A5 (en) 1975-07-15
NL7111920A (en) 1972-05-04
DE2143326A1 (en) 1972-05-04
BE771956A (en) 1971-12-31
DE2143326C2 (en) 1983-10-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee