JPS5568200A - Forming method of green compact - Google Patents

Forming method of green compact

Info

Publication number
JPS5568200A
JPS5568200A JP13938778A JP13938778A JPS5568200A JP S5568200 A JPS5568200 A JP S5568200A JP 13938778 A JP13938778 A JP 13938778A JP 13938778 A JP13938778 A JP 13938778A JP S5568200 A JPS5568200 A JP S5568200A
Authority
JP
Japan
Prior art keywords
green compact
powder
green
compacts
molding pressure
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
JP13938778A
Other languages
Japanese (ja)
Other versions
JPS6351800B2 (en
Inventor
Noriyuki Kiyousei
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.)
NSK Ltd
Original Assignee
NSK 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 NSK Ltd filed Critical NSK Ltd
Priority to JP13938778A priority Critical patent/JPS5568200A/en
Publication of JPS5568200A publication Critical patent/JPS5568200A/en
Publication of JPS6351800B2 publication Critical patent/JPS6351800B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: To obtain the green compact of a long length with dies of a short length by putting the second powder to the top of the first green compact and pressure molding this second powder and the first green compact.
CONSTITUTION: First powder 7 is put in the hole 4 of dies and is pressed by upper and lower punches 6 and 5 to obtain the first green compact 8. Thence, the second powder 10 is put on top 9 of the first green compact 8 and this second powder 10 and green compact 8 are pressed with the punches 6 and 5, whereby the green compact 13 is obtained. In this case, the first molding pressure is made 10kg/mm2 or less and the second molding pressure is made 30kg/mm2 or more, whereby the upper part 14 of the first green compact and the second powder 10 are compression- bonded and the green compact 13 is integrated. Also, by making the first molding pressure at 10W20kg/mm2 and the second at 30kg/mm2 or more, the density near the boundary of the green compacts may be made lowest and if desired the separated green compacts may be obtained. If necessary, it is possible to mold two kinds of green compacts of different shapes with the same die.
COPYRIGHT: (C)1980,JPO&Japio
JP13938778A 1978-11-14 1978-11-14 Forming method of green compact Granted JPS5568200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13938778A JPS5568200A (en) 1978-11-14 1978-11-14 Forming method of green compact

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13938778A JPS5568200A (en) 1978-11-14 1978-11-14 Forming method of green compact

Publications (2)

Publication Number Publication Date
JPS5568200A true JPS5568200A (en) 1980-05-22
JPS6351800B2 JPS6351800B2 (en) 1988-10-17

Family

ID=15244114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13938778A Granted JPS5568200A (en) 1978-11-14 1978-11-14 Forming method of green compact

Country Status (1)

Country Link
JP (1) JPS5568200A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0356683U (en) * 1989-10-02 1991-05-30

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147411A (en) * 1975-06-03 1976-12-17 Amsted Ind Inc Continuous process for shaping bar from powdery metal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147411A (en) * 1975-06-03 1976-12-17 Amsted Ind Inc Continuous process for shaping bar from powdery metal

Also Published As

Publication number Publication date
JPS6351800B2 (en) 1988-10-17

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