JPS552776A - Production of porous magnet plates - Google Patents

Production of porous magnet plates

Info

Publication number
JPS552776A
JPS552776A JP7587778A JP7587778A JPS552776A JP S552776 A JPS552776 A JP S552776A JP 7587778 A JP7587778 A JP 7587778A JP 7587778 A JP7587778 A JP 7587778A JP S552776 A JPS552776 A JP S552776A
Authority
JP
Japan
Prior art keywords
powder
molding
punch
holes
lower punches
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
JP7587778A
Other languages
Japanese (ja)
Other versions
JPS6054361B2 (en
Inventor
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 JP7587778A priority Critical patent/JPS6054361B2/en
Publication of JPS552776A publication Critical patent/JPS552776A/en
Publication of JPS6054361B2 publication Critical patent/JPS6054361B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Powder Metallurgy (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE: To produce a porous magnet plate with high quality and productivity by compression-molding the powder for sintered magnet between upper and lower punches to the plate-form body which is alternately provided with a multiplicity of taper form holes which do not completely penetrate down to the other side, on both surfaces and sintering said body then grinding the same from both surfaces.
CONSTITUTION: After the specified amount of powder 5 for sintered magnet is packed in the space formed by a lower punch 1 and case 2, an upper punch 3 is lowered to allow the tapered pins 4 respectively provided to the upper and lower punches 1, 3 to enter the inside of the powder 5. Here, the multiple pins 4 of the upper and lower punches 1, 3 are disposed approximately in grating form and alternately. Next, while the punch 3 is moved downward together with the case 2, the powder 5 is compression-molded to obtain a plateform molding 6 having tapered holes on the top and bottom surfaces. Next, the molding 6 is sintered in a firing furnace, after which both surfaces thereof are ground with a grinder or the like until the through-holes of the specified size are obtained, whereby a porous magnet plate 8 is produced.
COPYRIGHT: (C)1980,JPO&Japio
JP7587778A 1978-06-22 1978-06-22 Manufacturing method of porous magnetic plate Expired JPS6054361B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7587778A JPS6054361B2 (en) 1978-06-22 1978-06-22 Manufacturing method of porous magnetic plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7587778A JPS6054361B2 (en) 1978-06-22 1978-06-22 Manufacturing method of porous magnetic plate

Publications (2)

Publication Number Publication Date
JPS552776A true JPS552776A (en) 1980-01-10
JPS6054361B2 JPS6054361B2 (en) 1985-11-29

Family

ID=13588938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7587778A Expired JPS6054361B2 (en) 1978-06-22 1978-06-22 Manufacturing method of porous magnetic plate

Country Status (1)

Country Link
JP (1) JPS6054361B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02107402A (en) * 1988-10-17 1990-04-19 Hitachi Zosen Sangyo Kk Water permeable ceramic pavement slab and manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02107402A (en) * 1988-10-17 1990-04-19 Hitachi Zosen Sangyo Kk Water permeable ceramic pavement slab and manufacture thereof

Also Published As

Publication number Publication date
JPS6054361B2 (en) 1985-11-29

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