JPS6468403A - Method for forging powder - Google Patents

Method for forging powder

Info

Publication number
JPS6468403A
JPS6468403A JP22470587A JP22470587A JPS6468403A JP S6468403 A JPS6468403 A JP S6468403A JP 22470587 A JP22470587 A JP 22470587A JP 22470587 A JP22470587 A JP 22470587A JP S6468403 A JPS6468403 A JP S6468403A
Authority
JP
Japan
Prior art keywords
forging
die
bottom part
sintered compact
porosity ratio
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
JP22470587A
Other languages
Japanese (ja)
Inventor
Hiroshi Takigawa
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP22470587A priority Critical patent/JPS6468403A/en
Publication of JPS6468403A publication Critical patent/JPS6468403A/en
Pending legal-status Critical Current

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  • Forging (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To produce a high strength product having only a little surface porosity ratio in good yield by spreading a low heat conductive and heat resistant sheet specifying porosity ratio and thickness on bottom part of a die at the time of hot-forging a sintered compact in the forging die after solid-compacting and sintering the powder. CONSTITUTION:At the time of hot-forging the sintered compact by charging into the forging die after solid-compacting and sintering the powder, the low heat conductive and heat resistant sheet (graphite sheet, etc.,) having >=30%, porosity ratio and>=0.3mm thickness is spread beforehand on the bottom part of the forging die. By this method, as the heated sintered compact preform is not brought into direct contact with the bottom part of the die, it is not rapidly cooled, the porous layer is sufficiently forged and made dense, and the development of the surface porous layer is prevented.
JP22470587A 1987-09-07 1987-09-07 Method for forging powder Pending JPS6468403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22470587A JPS6468403A (en) 1987-09-07 1987-09-07 Method for forging powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22470587A JPS6468403A (en) 1987-09-07 1987-09-07 Method for forging powder

Publications (1)

Publication Number Publication Date
JPS6468403A true JPS6468403A (en) 1989-03-14

Family

ID=16817954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22470587A Pending JPS6468403A (en) 1987-09-07 1987-09-07 Method for forging powder

Country Status (1)

Country Link
JP (1) JPS6468403A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07179909A (en) * 1993-12-24 1995-07-18 Sumitomo Electric Ind Ltd Powder forging method
JP2016081942A (en) * 2014-10-09 2016-05-16 トヨタ自動車株式会社 Rare earth magnet manufacturing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07179909A (en) * 1993-12-24 1995-07-18 Sumitomo Electric Ind Ltd Powder forging method
JP2016081942A (en) * 2014-10-09 2016-05-16 トヨタ自動車株式会社 Rare earth magnet manufacturing method

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