GB743636A - Improvements in or relating to the manufacture of permanent magnets - Google Patents

Improvements in or relating to the manufacture of permanent magnets

Info

Publication number
GB743636A
GB743636A GB34764/53A GB3476453A GB743636A GB 743636 A GB743636 A GB 743636A GB 34764/53 A GB34764/53 A GB 34764/53A GB 3476453 A GB3476453 A GB 3476453A GB 743636 A GB743636 A GB 743636A
Authority
GB
United Kingdom
Prior art keywords
space
permanent magnets
dec
casting
filled
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
GB34764/53A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB743636A publication Critical patent/GB743636A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

743,636. Casting-processes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 14, 1953 [Dec. 17, 1952], No. 34764/53. Class 83 (1). In a, method of casting anisotropic permanent magnets from an iron-base alloy containing Ni, A1 and Co in which, during solidification, the magnet-body between the two pole-faces is surrounded by a chemically-exothermic material 2 and preferably at least one of the polefaces is cooled as by a metal chill plate 1, the material 2 is ignited, prior to the molten alloy being poured into the moulding space 5, by molten metal poured into a space 4 surrounding the material. The space 4 may be filled with the molten alloy itself which, after filling the space, runs over the upper edge of the material 2 to fill the space 5. Apertures 6 may be provided in the material 2 so that the alloy flows into the moulding space 5 before the space 4 is filled. Specification 661,727 is referred to.
GB34764/53A 1952-12-17 1953-12-14 Improvements in or relating to the manufacture of permanent magnets Expired GB743636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL743636X 1952-12-17

Publications (1)

Publication Number Publication Date
GB743636A true GB743636A (en) 1956-01-18

Family

ID=19822775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34764/53A Expired GB743636A (en) 1952-12-17 1953-12-14 Improvements in or relating to the manufacture of permanent magnets

Country Status (1)

Country Link
GB (1) GB743636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110943A (en) * 1958-10-02 1963-11-19 Inca Steel Company Ltd Production of metal ingots, castings and the like
US3234609A (en) * 1960-01-28 1966-02-15 Riken Piston Ring Ind Co Ltd Method of making magnetically anisotropic permanent magnets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110943A (en) * 1958-10-02 1963-11-19 Inca Steel Company Ltd Production of metal ingots, castings and the like
US3234609A (en) * 1960-01-28 1966-02-15 Riken Piston Ring Ind Co Ltd Method of making magnetically anisotropic permanent magnets

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