GB752112A - Improvements in and relating to electric induction apparatus - Google Patents

Improvements in and relating to electric induction apparatus

Info

Publication number
GB752112A
GB752112A GB3927/54A GB392754A GB752112A GB 752112 A GB752112 A GB 752112A GB 3927/54 A GB3927/54 A GB 3927/54A GB 392754 A GB392754 A GB 392754A GB 752112 A GB752112 A GB 752112A
Authority
GB
United Kingdom
Prior art keywords
lubricant
cutting
laminations
impregnated
core
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
GB3927/54A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB752112A publication Critical patent/GB752112A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • 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
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

752,112. Making magnetic cores; shearing. GENERAL ELECTRIC CO. Feb. 10, 1954 [Feb. 17, 1953], No. 3927/54. Classes 83 (2) and 83 (4). To assemble a coil on a closed laminated magnetic core, the core is cut at one or more places by forcing a wedge-shaped blade through the laminations after the core has been impregnated with a lubricant. The lubricant may be oil having a viscosity above 1200 centipose at the cutting temperature. The laminations 1, e.g. formed from cold rolled silicon steel strip, are impregnated at an elevated temperature and cut at normal temperature or are impregnated at normal temperature and refrigerated before cutting. The lubricant may be water which is frozen for the cutting operation; or a solid such as naphthalene, camphene, or camphor which can be melted for impregnation solidified for cutting and then removed by vaporization. The laminations are subsequently bonded together with a plastic. Synthetic resins such as epoxy resins may serve as a lubricant and bonding agent so eliminating the operation of removing the lubricant. The blade 6 is of high carbon tool steel hardened to at least Rockwell C60 and may be operated hydraulically. The apex angle is 35-55 degrees and the apex is blunted to about 0.001 inch radius. Specification 545,229, [Group XXXV], is referred to.
GB3927/54A 1953-02-17 1954-02-10 Improvements in and relating to electric induction apparatus Expired GB752112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US752112XA 1953-02-17 1953-02-17

Publications (1)

Publication Number Publication Date
GB752112A true GB752112A (en) 1956-07-04

Family

ID=22124262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3927/54A Expired GB752112A (en) 1953-02-17 1954-02-10 Improvements in and relating to electric induction apparatus

Country Status (1)

Country Link
GB (1) GB752112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000490A1 (en) * 1978-01-10 1979-07-26 Createc Sa Process for production of a wound magnetic circuit;wound magnetic circuit resulting from this process;devices for carrying out the process
EP2395520A1 (en) * 2010-06-08 2011-12-14 ABB Technology AG Core ring of a transformer or a choke designed as a wound strip core

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000490A1 (en) * 1978-01-10 1979-07-26 Createc Sa Process for production of a wound magnetic circuit;wound magnetic circuit resulting from this process;devices for carrying out the process
EP2395520A1 (en) * 2010-06-08 2011-12-14 ABB Technology AG Core ring of a transformer or a choke designed as a wound strip core
WO2011154235A1 (en) * 2010-06-08 2011-12-15 Abb Technology Ag Core ring of a transformer or a choke, designed as a ribbon core

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