IT1272012B - Procedimento e dispositivo per la realizzazione di corpi stampati a piu' gradini. - Google Patents

Procedimento e dispositivo per la realizzazione di corpi stampati a piu' gradini.

Info

Publication number
IT1272012B
IT1272012B ITMI930475A ITMI930475A IT1272012B IT 1272012 B IT1272012 B IT 1272012B IT MI930475 A ITMI930475 A IT MI930475A IT MI930475 A ITMI930475 A IT MI930475A IT 1272012 B IT1272012 B IT 1272012B
Authority
IT
Italy
Prior art keywords
filling
molded
heights
nominal
filling volume
Prior art date
Application number
ITMI930475A
Other languages
English (en)
Inventor
Gerd Hinzmann
Norbert Nies
Manfred Gunther
Original Assignee
Mannesmann Ag
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 Mannesmann Ag filed Critical Mannesmann Ag
Publication of ITMI930475A0 publication Critical patent/ITMI930475A0/it
Publication of ITMI930475A1 publication Critical patent/ITMI930475A1/it
Application granted granted Critical
Publication of IT1272012B publication Critical patent/IT1272012B/it

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
    • B30B11/005—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/004—Filling molds with powder
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Control Of Presses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invenzione concerne un procedimento e una pressa per la sua attuazione per la realizzazione di corpi stampati a più gradini in materiale polverulento, il quale viene versato in una cavità di stampaggio (volume di riempimento) circondata da una matrice e viene compresso da punzoni inferiori mobili relativamente fra loro e da almeno un punzone superiore mosso relativamente verso i punzoni inferiori, la quantità del materiale polverulento versato essendo regolata ad un valore nominale con correzione del volume di riempimento e scostamenti da valori nominali essendo rilevati direttamente o indirettamente per via automatica.Affinché corpi stampati, nonostante l'alta densità e una forma complicata, possano essere prodotti con alta sicurezza esente da fessure, viene proposto che la correzione del volume di riempimento per raggiungere una densità uguale nei diversi gradini del corpo stampato, ha luogo con variazione rispettivamente differentemente forte delle altezze di riempimento dei singoli stampi inferiori in modo che i valori di rapporto delle altezze di riempimento corrette corrispondano in una prima approssimazione ai valori di rapporto delle altezze nominali dei gradini rispettivamente associati nel corpo stampato.
ITMI930475A 1992-03-23 1993-03-12 Procedimento e dispositivo per la realizzazione di corpi stampati a piu' gradini. IT1272012B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4209767A DE4209767C1 (it) 1992-03-23 1992-03-23

Publications (3)

Publication Number Publication Date
ITMI930475A0 ITMI930475A0 (it) 1993-03-12
ITMI930475A1 ITMI930475A1 (it) 1994-09-12
IT1272012B true IT1272012B (it) 1997-06-10

Family

ID=6455026

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930475A IT1272012B (it) 1992-03-23 1993-03-12 Procedimento e dispositivo per la realizzazione di corpi stampati a piu' gradini.

Country Status (4)

Country Link
DE (1) DE4209767C1 (it)
FR (1) FR2688724B1 (it)
GB (1) GB2265567B (it)
IT (1) IT1272012B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428842C1 (de) * 1994-08-02 1996-01-18 Mannesmann Ag Vorrichtung zur Herstellung von Preßkörpern
DE19717217C2 (de) * 1997-04-24 1999-12-02 Fette Wilhelm Gmbh Verfahren und Vorrichtung zur Herstellung von Preßlingen aus Hartmetall, Keramik, Sintermetall oder dergleichen
DE10010671C2 (de) † 2000-03-04 2002-03-14 Fette Wilhelm Gmbh Verfahren zur Herstellung von Preßteilen durch Pressen von Metallpulver und anschließendes Sintern des Preßlings
DE10051236A1 (de) * 2000-10-16 2002-04-25 Dorst Masch & Anlagen Verfahren und Vorrichtung zum Bestimmen von Pressparametern zum Pressen komplex aufgebauter Presslinge
DE10142772C2 (de) * 2001-08-31 2003-09-25 Fette Wilhelm Gmbh Verfahren zur Herstellung von Pressteilen in einer Pulverpresse
SE0203475A0 (en) * 2002-01-25 2003-07-26 Ck Man Ab A method and an apparatus for producing multi-level or stepped components for shock (impact) compression of powdered material
DE10254656B4 (de) 2002-11-22 2005-10-13 Dorst Technologies Gmbh & Co. Kg Presseneinrichtung zum Herstellen maßhaltiger Presslinge mit zentraler Stempelabstützung
US7207103B2 (en) * 2003-12-08 2007-04-24 Kemet Electronics Corporation Powder compaction press for capacitor anodes
DE102004008322B4 (de) 2004-02-20 2008-11-27 Fette Gmbh Pulverpresse
US7981359B2 (en) * 2004-04-06 2011-07-19 Hitachi Metals, Ltd. Rotor and process for manufacturing the same
DE102005027032B4 (de) * 2005-06-11 2007-06-28 Sms Meer Gmbh Vorrichtung zum Herstellen eines Formteils
JP4853771B2 (ja) * 2006-03-01 2012-01-11 日立金属株式会社 ヨーク一体型ボンド磁石およびそれを用いたモータ用磁石回転子
CN102248705B (zh) * 2011-07-01 2014-01-01 宁波市北仑新港冶金机械有限公司 粉末成形机的多送料复合粉成型机构
DE102019104041A1 (de) * 2019-02-18 2020-08-20 Dorst Technologies Gmbh & Co. Kg Verfahren zum Pulverpressen
CN110116517A (zh) * 2019-06-06 2019-08-13 江苏集萃有机光电技术研究所有限公司 一种压头组件及热压机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610011A (en) * 1943-09-01 1948-10-11 American Electro Metal Corp Method and press for compacting metallic powder
CH275560A (de) * 1946-12-04 1951-05-31 Primavesi Davide Pressform zur Herstellung von Presskörpern.
US3172156A (en) * 1962-09-06 1965-03-09 Cincinnati Shaper Co Compacting press
GB1028523A (en) * 1964-01-10 1966-05-04 Saunders Roe & Nuclear Entpr Improvements in or relating to the measurement of density
US3389432A (en) * 1966-04-18 1968-06-25 Cincinnati Shaper Co Load indicating device for compacting press
GB1475272A (en) * 1974-06-28 1977-06-01 Kilian & Co Gmbh Rotary tablet press
DE2951716A1 (de) * 1979-12-19 1981-07-02 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum pressen von formkoerpern
DE3919821C2 (de) * 1989-06-15 1994-04-07 Mannesmann Ag Verfahren und Vorrichtung zum Herstellen von maßhaltigen Preßlingen

Also Published As

Publication number Publication date
GB2265567A (en) 1993-10-06
GB2265567B (en) 1995-12-06
DE4209767C1 (it) 1993-05-06
FR2688724A1 (fr) 1993-09-24
FR2688724B1 (fr) 1996-08-09
GB9306019D0 (en) 1993-05-12
ITMI930475A1 (it) 1994-09-12
ITMI930475A0 (it) 1993-03-12

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19990226