JPS56133801A - Manufacture of insulating soft magnetic plate - Google Patents

Manufacture of insulating soft magnetic plate

Info

Publication number
JPS56133801A
JPS56133801A JP3647880A JP3647880A JPS56133801A JP S56133801 A JPS56133801 A JP S56133801A JP 3647880 A JP3647880 A JP 3647880A JP 3647880 A JP3647880 A JP 3647880A JP S56133801 A JPS56133801 A JP S56133801A
Authority
JP
Japan
Prior art keywords
soft magnetic
core
insulating
superior
magnetic plate
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.)
Pending
Application number
JP3647880A
Other languages
Japanese (ja)
Inventor
Ryo Masumoto
Yuetsu Murakami
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.)
DENKI JIKI ZAIRYO KENKYUSHO
Research Institute for Electromagnetic Materials
Original Assignee
DENKI JIKI ZAIRYO KENKYUSHO
Research Institute for Electromagnetic Materials
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 DENKI JIKI ZAIRYO KENKYUSHO, Research Institute for Electromagnetic Materials filed Critical DENKI JIKI ZAIRYO KENKYUSHO
Priority to JP3647880A priority Critical patent/JPS56133801A/en
Publication of JPS56133801A publication Critical patent/JPS56133801A/en
Pending 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
    • H01F1/12—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
    • H01F1/14708—Fe-Ni based alloys
    • H01F1/14716—Fe-Ni based alloys in the form of sheets
    • H01F1/14725—Fe-Ni based alloys in the form of sheets with insulating coating
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/105—Mounting of head within housing or assembling of head and housing
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets

Landscapes

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

Abstract

PURPOSE:To obtain a superior insulating soft magnetic plate by insulating a soft magnetic core with a substance having small contraction in volume in sodification and a coefficient of thermal expansion of 10X10<-6> or less or by molding the core in a shield case. CONSTITUTION:When a soft magnetic core of soft magnetic alloy consisting of a substance having small contraction in volume in solidification and a coefficient of thermal expansion of 10X10<-6> or less is molded in a shield case after stacking an insulator, an insulating soft magnetic plate which can maintain the initial superior magnetic characteristics is permitted to obtain by reducing compressive stress acting to the above core at normal temperature. For example, a mixed solution consisting mixtures of one or two kinds or more of insulating oxides as a principal compound is applied to a thin alloy plate of Ni-Fe group to compose as an insulating core and the core is fixed by solidifying at high temperatures. In this way, a superior magnetic head having a small reduction in magnetic permeability and widening an operating frequency region will be obtained.
JP3647880A 1980-03-21 1980-03-21 Manufacture of insulating soft magnetic plate Pending JPS56133801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3647880A JPS56133801A (en) 1980-03-21 1980-03-21 Manufacture of insulating soft magnetic plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3647880A JPS56133801A (en) 1980-03-21 1980-03-21 Manufacture of insulating soft magnetic plate

Publications (1)

Publication Number Publication Date
JPS56133801A true JPS56133801A (en) 1981-10-20

Family

ID=12470915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3647880A Pending JPS56133801A (en) 1980-03-21 1980-03-21 Manufacture of insulating soft magnetic plate

Country Status (1)

Country Link
JP (1) JPS56133801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1482072A3 (en) * 2003-05-30 2008-07-30 Vacuumschmelze GmbH & Co. KG Metallic object provided with electrically insulating coating as well as process for making electrically insulating coating
CN113628824A (en) * 2021-08-23 2021-11-09 北京航空航天大学 High-strength ceramic-coated iron-based composite soft magnetic material and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156199A (en) * 1978-05-31 1979-12-08 Kawasaki Steel Co Directional silicon steel plate having crystal vitreous insulating film

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156199A (en) * 1978-05-31 1979-12-08 Kawasaki Steel Co Directional silicon steel plate having crystal vitreous insulating film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1482072A3 (en) * 2003-05-30 2008-07-30 Vacuumschmelze GmbH & Co. KG Metallic object provided with electrically insulating coating as well as process for making electrically insulating coating
EP1482072B1 (en) * 2003-05-30 2014-04-16 Vacuumschmelze GmbH & Co. KG Metallic object provided with electrically insulating coating as well as process for making electrically insulating coating
CN113628824A (en) * 2021-08-23 2021-11-09 北京航空航天大学 High-strength ceramic-coated iron-based composite soft magnetic material and preparation method thereof

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