JPS57106447A - Mold for rare earth magnet - Google Patents

Mold for rare earth magnet

Info

Publication number
JPS57106447A
JPS57106447A JP55184324A JP18432480A JPS57106447A JP S57106447 A JPS57106447 A JP S57106447A JP 55184324 A JP55184324 A JP 55184324A JP 18432480 A JP18432480 A JP 18432480A JP S57106447 A JPS57106447 A JP S57106447A
Authority
JP
Japan
Prior art keywords
fins
mold
rare earth
cooling
suited
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
JP55184324A
Other languages
Japanese (ja)
Inventor
Tadaharu Tomita
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55184324A priority Critical patent/JPS57106447A/en
Publication of JPS57106447A publication Critical patent/JPS57106447A/en
Pending legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE: To increase the ratio of columnar crystal suited for a raw material for high performance magnet by attaching ≥1 pieces of fins to the outside circumference of a mold for rare earth magnets.
CONSTITUTION: It is more effective to part fins 1, 2 for cooling than to adhere these tightly. If the thickness of the fins is small, the subsequent cooling rate is increased without changing a initial cooling rate. Further, the larger the size of the fins, the better. The rate of cooling is higher with the sand blasted surfaces of the fins than with the specular surfaces thereof. Steel and cast iron are suited for the material of the mold. In the case of a round type mold, the provision of the fins in the central part in its height direction gives higher effect.
COPYRIGHT: (C)1982,JPO&Japio
JP55184324A 1980-12-25 1980-12-25 Mold for rare earth magnet Pending JPS57106447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184324A JPS57106447A (en) 1980-12-25 1980-12-25 Mold for rare earth magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184324A JPS57106447A (en) 1980-12-25 1980-12-25 Mold for rare earth magnet

Publications (1)

Publication Number Publication Date
JPS57106447A true JPS57106447A (en) 1982-07-02

Family

ID=16151330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184324A Pending JPS57106447A (en) 1980-12-25 1980-12-25 Mold for rare earth magnet

Country Status (1)

Country Link
JP (1) JPS57106447A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01272706A (en) * 1988-04-21 1989-10-31 Ibiden Co Ltd Carbon mold for hot press
JPH07171660A (en) * 1991-08-22 1995-07-11 W C Heraeus Gmbh Method and casting mold for producing casting consisting of high-temperature crack-sensitive material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01272706A (en) * 1988-04-21 1989-10-31 Ibiden Co Ltd Carbon mold for hot press
JPH07171660A (en) * 1991-08-22 1995-07-11 W C Heraeus Gmbh Method and casting mold for producing casting consisting of high-temperature crack-sensitive material

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