GB1070729A - Method of producing permanent magnets - Google Patents

Method of producing permanent magnets

Info

Publication number
GB1070729A
GB1070729A GB4522563A GB4522563A GB1070729A GB 1070729 A GB1070729 A GB 1070729A GB 4522563 A GB4522563 A GB 4522563A GB 4522563 A GB4522563 A GB 4522563A GB 1070729 A GB1070729 A GB 1070729A
Authority
GB
United Kingdom
Prior art keywords
rollers
magnetic
particles
admixture
granules
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
GB4522563A
Inventor
Walter Scott Blume
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.)
Leyman Corp
Original Assignee
Leyman Corp
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 Leyman Corp filed Critical Leyman Corp
Priority to GB4522563A priority Critical patent/GB1070729A/en
Publication of GB1070729A publication Critical patent/GB1070729A/en
Expired 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
    • H01F1/032—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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • H01F1/113—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

1,070,729. Magnetic structures. LEYMAN CORPORATION. Nov. 15, 1963, No. 45225/63. Heading H1H. In a method of making a permanent magnet somewhat similar to that disclosed in Specification 860,220, anisotropic magnetic particles are admixed or dispersed in a non-magnetic matrix material and the admixture is divided into granules, these granules then being subjected to a shear force to form an elongated body whilst at the same time the particles are moved so that their axes are parallel or coplanar. The magnetic material may be Ba, Sr or Pb ferrite or single domain iron, the former being plate like and the latter elongated. The matrix may be a solid, semi-solid, or viscous liquid, and examples include rubber, resin, plastic elastomer or metal materials. In one example 16.76 1b. of barium ferrite is ground to single domain size, and 1À295 1b. of uncured rubber is softened by rollers. These are mixed at a temperature below 300‹ F., 25.5 gm. of wax and 6.5 gm. of stearic acid are added, and the admixture is granulated to a size which will pass a 20-mesh screen. The material is then passed through rollers providing a shear force and forming an extended sheet in which the particles are orientated. The rollers may rotate at different speeds. The sheets so formed may be stacked to form blocks. The sheets or blocks are then cured by a conventional vulcanizing process, e.g. heating for 12 minutes at 278‹ F., cut to shape, and magnetized to form a permanent magnet.
GB4522563A 1963-11-15 1963-11-15 Method of producing permanent magnets Expired GB1070729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4522563A GB1070729A (en) 1963-11-15 1963-11-15 Method of producing permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4522563A GB1070729A (en) 1963-11-15 1963-11-15 Method of producing permanent magnets

Publications (1)

Publication Number Publication Date
GB1070729A true GB1070729A (en) 1967-06-01

Family

ID=10436371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4522563A Expired GB1070729A (en) 1963-11-15 1963-11-15 Method of producing permanent magnets

Country Status (1)

Country Link
GB (1) GB1070729A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426968A1 (en) * 1978-05-26 1979-12-21 Philips Nv PROCESS FOR THE MANUFACTURE OF ANISOTROPIC PERMANENT MAGNETS WITH SYNTHETIC BOND
EP1304542A3 (en) * 2001-10-19 2004-08-11 Philips Intellectual Property & Standards GmbH Method for Determining the spacial distribution of magnetic particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426968A1 (en) * 1978-05-26 1979-12-21 Philips Nv PROCESS FOR THE MANUFACTURE OF ANISOTROPIC PERMANENT MAGNETS WITH SYNTHETIC BOND
EP1304542A3 (en) * 2001-10-19 2004-08-11 Philips Intellectual Property & Standards GmbH Method for Determining the spacial distribution of magnetic particles

Similar Documents

Publication Publication Date Title
US2999275A (en) Mechanical orientation of magnetically anisotropic particles
US3024392A (en) Process for the manufacture of plastic bound permanent magnets
US3051988A (en) Material with permanent magnetic properties
US3070841A (en) Method and apparatus for making magnetically anisotropic elongated magnets
US2964793A (en) Method of making permanent magnets
US4200547A (en) Matrix-bonded permanent magnet having highly aligned magnetic particles
KR870009410A (en) Magnetic anisotropic bond magnets, magnetic powders used in the same, and methods for producing the same
GB1209934A (en) Improvements in or relating to coded cards for actuating or setting a magnetically operated mechanism
GB1070729A (en) Method of producing permanent magnets
US3141050A (en) Mechanical orientation of magnetically anisotropic particles
GB1365983A (en) Method for preparing liquid mixtures in manufacture of latex arti cles
GB860220A (en) Mechanical orientation of magnetically anisotropic particles
DE2140319C3 (en) Flexible permanent magnets
US4321222A (en) Method of manufacturing plastic-bonded anisotropic permanent magnets
DE2140320A1 (en) Flexible permanent magnets and method of making barium ferrite particles for magnets
US4444670A (en) Method of manufacturing magnetic, plastic-bonded molded bodies
DE2136893A1 (en) SLOT FOR ELECTRIC MACHINERY
GB882712A (en) Material with permanent magnetic properties
ES395450A3 (en) A procedure for the manufacture of permanent magnets. (Machine-translation by Google Translate, not legally binding)
DE1614330C3 (en)
GB1051338A (en)
GB1357251A (en) System for feeding grinding media to continuous attrition mill and process for grinding particulate solids therein
GB1299490A (en) Improvements relating to anisotropic magnet bodies
JPS5621303A (en) Magnet roll and manufacture thereof
GB1025616A (en) Flexible permanent magnet devices