JPS5514526A - Manufacture for magnetic head core - Google Patents

Manufacture for magnetic head core

Info

Publication number
JPS5514526A
JPS5514526A JP8673378A JP8673378A JPS5514526A JP S5514526 A JPS5514526 A JP S5514526A JP 8673378 A JP8673378 A JP 8673378A JP 8673378 A JP8673378 A JP 8673378A JP S5514526 A JPS5514526 A JP S5514526A
Authority
JP
Japan
Prior art keywords
sendust
core
high frequency
magnetic material
manufacture
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.)
Granted
Application number
JP8673378A
Other languages
Japanese (ja)
Other versions
JPS6215923B2 (en
Inventor
Nobuhiro Tsukagoshi
Toru Namiki
Hiroshi Ito
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP8673378A priority Critical patent/JPS5514526A/en
Publication of JPS5514526A publication Critical patent/JPS5514526A/en
Publication of JPS6215923B2 publication Critical patent/JPS6215923B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/1272—Assembling or shaping of elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To manufacture the core excellent in the saturated magnetic flux density from magnetic material of poor machining such as Sendust, by compressing the molten magnetic material with a press and forming the core with high speed cooling. CONSTITUTION:After the block 10 such as Sendust is placed on the material placing stand 3 and it is positioned on the center of the high frequency coil 2, the air in the vessel 1 is exhausted with the vacuum pump causing vacuum of 10<-3> Torr. or more. When current flows to the high frequency coil 2 with the operation of the high frequency oscillator 4, the molten Sendust drops with spherical shape and it reaches the part between the opposing sections 5b,5b' of the pistons 5,5'. Then, the Sendust compressed is rapidly cooled with the pistons 5,5' and it is formed into core shape with the concave of the opposing surfaces 5b,5b'. Accordingly, the heads excellent in magnetic performance can be made by using magnetic material such as Sendust in which the crystal grain is made smaller with rapid cooling.
JP8673378A 1978-07-18 1978-07-18 Manufacture for magnetic head core Granted JPS5514526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8673378A JPS5514526A (en) 1978-07-18 1978-07-18 Manufacture for magnetic head core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8673378A JPS5514526A (en) 1978-07-18 1978-07-18 Manufacture for magnetic head core

Publications (2)

Publication Number Publication Date
JPS5514526A true JPS5514526A (en) 1980-02-01
JPS6215923B2 JPS6215923B2 (en) 1987-04-09

Family

ID=13895025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8673378A Granted JPS5514526A (en) 1978-07-18 1978-07-18 Manufacture for magnetic head core

Country Status (1)

Country Link
JP (1) JPS5514526A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692199A (en) * 1985-12-13 1987-09-08 Lear Siegler, Inc. Method and apparatus for bonding fabric to a foam pad
JPH01175212A (en) * 1987-12-29 1989-07-11 Biimu Denshi Kogyo Kk Ring-shaped dust core, its manufacture and its manufacturing apparatus
US4877753A (en) * 1986-12-04 1989-10-31 Texas Instruments Incorporated In situ doped polysilicon using tertiary butyl phosphine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692199A (en) * 1985-12-13 1987-09-08 Lear Siegler, Inc. Method and apparatus for bonding fabric to a foam pad
US4877753A (en) * 1986-12-04 1989-10-31 Texas Instruments Incorporated In situ doped polysilicon using tertiary butyl phosphine
JPH01175212A (en) * 1987-12-29 1989-07-11 Biimu Denshi Kogyo Kk Ring-shaped dust core, its manufacture and its manufacturing apparatus

Also Published As

Publication number Publication date
JPS6215923B2 (en) 1987-04-09

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