JPS566410A - Die for production of ferrite magnet - Google Patents

Die for production of ferrite magnet

Info

Publication number
JPS566410A
JPS566410A JP8102479A JP8102479A JPS566410A JP S566410 A JPS566410 A JP S566410A JP 8102479 A JP8102479 A JP 8102479A JP 8102479 A JP8102479 A JP 8102479A JP S566410 A JPS566410 A JP S566410A
Authority
JP
Japan
Prior art keywords
outlet
molding
parallel section
die
extrusion
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
JP8102479A
Other languages
Japanese (ja)
Inventor
Kazunori Tawara
Katsunobu Yamamoto
Tokuyuki Noda
Motoharu Shimizu
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP8102479A priority Critical patent/JPS566410A/en
Publication of JPS566410A publication Critical patent/JPS566410A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To prevent possible cracks with a promoted magnetic anisotropy and an even molding density by means of a parallel section over 1,000 times as long as the grain size of the ferrite powder arranged at the tip of a extrusion outlet of the die connected to the outlet of a molding machine. CONSTITUTION:The parallel section 3 over 1,000 times as long as the grain size of the ferrite powder is provided at the tip of the extrusion outlet of the die connected to the outlet of the molding machine. Positioned following a tapered section, this proper parallel section 3 eliminates roughness on the surface of the molding thereby uniformizing the molding density. Thus, the magnetic anisotropy accompanied by the extrusion effect or the like can be promoted and variance in the molding density checked thereby preventing possible cracks in the sintered body.
JP8102479A 1979-06-27 1979-06-27 Die for production of ferrite magnet Pending JPS566410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8102479A JPS566410A (en) 1979-06-27 1979-06-27 Die for production of ferrite magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8102479A JPS566410A (en) 1979-06-27 1979-06-27 Die for production of ferrite magnet

Publications (1)

Publication Number Publication Date
JPS566410A true JPS566410A (en) 1981-01-23

Family

ID=13734901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8102479A Pending JPS566410A (en) 1979-06-27 1979-06-27 Die for production of ferrite magnet

Country Status (1)

Country Link
JP (1) JPS566410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07317238A (en) * 1994-05-26 1995-12-05 Yamato Kazarishiya:Kk Rafter for eaves gutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07317238A (en) * 1994-05-26 1995-12-05 Yamato Kazarishiya:Kk Rafter for eaves gutter

Similar Documents

Publication Publication Date Title
ES280851U (en) Set of catheter or cannula and mandrel.
CH476541A (en) Method and negative mold for the production of a metallic file part, file part and its use with the working surface
JPS566410A (en) Die for production of ferrite magnet
GB973331A (en) Method of producing anisotropic permanent magnets
ES427294A1 (en) Adjusting pin for a ferro-magnetic core
JPS55124631A (en) Manufacturing method of annular magnet
FR2039980A5 (en) Gramophone record mould
GB1483287A (en) Adjustable inductors
JPS5373128A (en) Production of magnetic head
GB1498975A (en) Threaded sleeve
JPS553684A (en) Electromagnet that use non-magnetic body film
JPS57103116A (en) Magnetic head
JPS5640536A (en) Injection machine for long rubber, plastic body
JPS566409A (en) Die for production of ferrite magnet
AT270589B (en) Process for the production of an Fe2 O3 powder with a particle size between 0.02 µm and 0.15 µm
JPS5342018A (en) Magnetic head and preparation thereof
JPS57135423A (en) Manufacture of magnetic head
JPS55138806A (en) Magnet supported with non-magnetic base body and production of the same
JPS57158302A (en) Method and device for molding composite material
JPS5337009A (en) Production of head core
JPS51138989A (en) A method for producing wheel head stock for cutting
JPS55115318A (en) Manufacturing method of rubber magnet
JPS5392401A (en) Mold electrical winding and its manufacturing method
JPS5593398A (en) Magnetic circuit for speaker
JPS57164771A (en) Magnet roll for magnetic brush