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GB1473397A - Moulded magnet core components utilising cut steel particles - Google Patents

Moulded magnet core components utilising cut steel particles

Info

Publication number
GB1473397A
GB1473397A GB3826674A GB3826674A GB1473397A GB 1473397 A GB1473397 A GB 1473397A GB 3826674 A GB3826674 A GB 3826674A GB 3826674 A GB3826674 A GB 3826674A GB 1473397 A GB1473397 A GB 1473397A
Authority
GB
United Kingdom
Prior art keywords
microlaminations
pressing
mould
core components
die
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
GB3826674A
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1473397A publication Critical patent/GB1473397A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • 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
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14775—Fe-Si based alloys in the form of sheets
    • H01F1/14783—Fe-Si based alloys in the form of sheets with insulating coating
    • 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
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

1473397 Magnetic core components WESTTINGHOUSE ELECTRIC CORP 2 Sept 1974 [11 Sept 1973] 38266/74 Heading B3A A method of producing magnetic core components comprises severing microlaminations 42 from thin flat strips of ferrous alloys, annealing the microlaminations in decarburizing and deoxidizing atmospheres, applying a thin elastic insulating layer to the microlaminations, assembly a plurality of the microlaminations in a mould 30, aligning the microlaimnations into a desired orientation and pressing the aligned microlaminations to form the core component. The microlaminations are formed of iron alloy containing 0À05 to 0À15% C and are annealed in wet hydrogen having a dew point in excess of +120‹ F. and in dry hydrogen having a dew point of less than -40‹ F. to decarburize and deoxidize the laminations respectively. The annealed microlaminations are coated in a slurry containing magnesium methylate and then placed in a die or mould of predetermined configuration. They are aligned with a magnetic probe, Fig. 4 (not shown), and then pressed with a pressure of at least 50,000 p.s.i. A binder may be admixed with the laminations prior to pressing in the die and set either during or after pressing. The mould 30 includes an outer die member 32 and top and bottom punches 38, 36. A core bar 40 is used to provide the desired inside diameter of the ring core. Uniaxial pressure may be supplied via a double or single action press. Hydrostatic as well as isostatic pressing can be utilized.
GB3826674A 1973-09-11 1974-09-02 Moulded magnet core components utilising cut steel particles Expired GB1473397A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39626073A 1973-09-11 1973-09-11

Publications (1)

Publication Number Publication Date
GB1473397A true GB1473397A (en) 1977-05-11

Family

ID=23566520

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3826674A Expired GB1473397A (en) 1973-09-11 1974-09-02 Moulded magnet core components utilising cut steel particles

Country Status (10)

Country Link
JP (1) JPS5810846B2 (en)
BR (1) BR7407533D0 (en)
CA (1) CA1036659A (en)
DE (1) DE2443192C2 (en)
ES (1) ES429978A1 (en)
FR (1) FR2243515B1 (en)
GB (1) GB1473397A (en)
IN (1) IN141767B (en)
IT (1) IT1024021B (en)
PH (1) PH11060A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101431279B (en) * 2007-11-07 2012-08-15 通用汽车环球科技运作公司 Rotating electric machine stator core and method of making

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1172006A (en) * 1981-01-23 1984-08-07 Orville W. Reen Method for making cores for alternating current applications
DE102021203308A1 (en) * 2021-03-31 2022-10-06 Universität Stuttgart, Körperschaft Des Öffentlichen Rechts Process for manufacturing an electrical component

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209731C (en) *
DE336507C (en) * 1919-10-04 1921-05-03 Edmund Schroeder Process for the production of iron bodies for the magnetic field of transformers, dynamos, choke coils etc. from iron in crushed form
US1850181A (en) * 1929-02-08 1932-03-22 Automatic Telephone Mfg Co Ltd Magnet core
DE899360C (en) * 1942-02-03 1953-12-10 Eisen & Stahlind Ag Process to achieve a temperature-dependent magnetization intensity
US2689398A (en) * 1948-03-24 1954-09-21 Plessey Co Ltd Method of making magnetizable compacts
US2937964A (en) * 1957-07-23 1960-05-24 Adams Edmond Magnetic flake core
US3255052A (en) * 1963-12-09 1966-06-07 Magnetics Inc Flake magnetic core and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101431279B (en) * 2007-11-07 2012-08-15 通用汽车环球科技运作公司 Rotating electric machine stator core and method of making

Also Published As

Publication number Publication date
DE2443192A1 (en) 1975-07-24
JPS5810846B2 (en) 1983-02-28
ES429978A1 (en) 1977-01-16
DE2443192C2 (en) 1983-12-08
CA1036659A (en) 1978-08-15
IT1024021B (en) 1978-06-20
IN141767B (en) 1977-04-16
JPS5054898A (en) 1975-05-14
AU7306874A (en) 1976-03-11
FR2243515B1 (en) 1980-11-28
PH11060A (en) 1977-10-25
BR7407533D0 (en) 1975-07-08
FR2243515A1 (en) 1975-04-04

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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