EP0919635A3 - Verfahren zum Herstellen eines Formteils aus Sinterstahlpulver - Google Patents

Verfahren zum Herstellen eines Formteils aus Sinterstahlpulver Download PDF

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Publication number
EP0919635A3
EP0919635A3 EP98121445A EP98121445A EP0919635A3 EP 0919635 A3 EP0919635 A3 EP 0919635A3 EP 98121445 A EP98121445 A EP 98121445A EP 98121445 A EP98121445 A EP 98121445A EP 0919635 A3 EP0919635 A3 EP 0919635A3
Authority
EP
European Patent Office
Prior art keywords
sintered
steel powder
compacts
powder
preparing
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.)
Withdrawn
Application number
EP98121445A
Other languages
English (en)
French (fr)
Other versions
EP0919635A2 (de
Inventor
Bernhard Moellersmann
Rudolf Schneider
Ralf Rudzinski-Lorenzen
Ralf Matke
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.)
Sinterwerke Herne GmbH
Original Assignee
BT Magnet Technologie GmbH
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 BT Magnet Technologie GmbH filed Critical BT Magnet Technologie GmbH
Publication of EP0919635A2 publication Critical patent/EP0919635A2/de
Publication of EP0919635A3 publication Critical patent/EP0919635A3/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1258—Container manufacturing
    • B22F3/1266—Container manufacturing by coating or sealing the surface of the preformed article, e.g. by melting
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F3/15—Hot isostatic pressing
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • 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
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zum Herstellen eines hochfesten und verschleißbeständigen Formteils mit geringer Maßstreuung aus niedriglegiertem Stahlpulver, bei dem das Stahlpulver mit Beimengungen formgepreßt, gesintert und das gesinterte Formteil einer Wärmenachbehandlung unterzogen wird. Der Sinterschwund und das Abmaß vom Nennmaß läßt sich für die Sinterteile dadurch wesentlich reduzieren, daß das mit Chrom, Molybdän, Vanadium legierte und mit Kohlenstoff gemischten Stahlpulver in einem Warmpreßvorgang zu Grünlingen oder Pulverpreßlingen bis zu einer gleichförmigen Ausgangsdichte von ≥ 7,2 g/cm3 formgepreßt werden, daß die formgerechten Grünlinge oder Pulverpreßlinge zum Erreichen einer geschlossenen Porosität bei einer Temperatur von 1150° C bis 1300° C gesintert werden und daß die Sinterteile in einem abschließenden HIP-Vorgang auf Dichten > 99 % der theoretischen Dichte nachverdichtet werden.
EP98121445A 1997-11-27 1998-11-11 Verfahren zum Herstellen eines Formteils aus Sinterstahlpulver Withdrawn EP0919635A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997152505 DE19752505C1 (de) 1997-11-27 1997-11-27 Verfahren zum Herstellen eines Formteils aus Sinterstahlpulver
DE19752505 1997-11-27

Publications (2)

Publication Number Publication Date
EP0919635A2 EP0919635A2 (de) 1999-06-02
EP0919635A3 true EP0919635A3 (de) 2002-12-18

Family

ID=7849937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121445A Withdrawn EP0919635A3 (de) 1997-11-27 1998-11-11 Verfahren zum Herstellen eines Formteils aus Sinterstahlpulver

Country Status (2)

Country Link
EP (1) EP0919635A3 (de)
DE (1) DE19752505C1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2123377A1 (de) 2008-05-23 2009-11-25 Rovalma, S.A. Verfahren zur Herstellung eines Werkstücks, insbesondere eines Formgebungswerkzeugs oder eines Formgebungswerkzeugteils.
SE534273C2 (sv) * 2009-01-12 2011-06-28 Metec Powder Metal Ab Stålprodukt och tillverkning av stålprodukt genom bland annat sintring, höghastighetspressning och varmisostatpressning

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368630A (en) * 1993-04-13 1994-11-29 Hoeganaes Corporation Metal powder compositions containing binding agents for elevated temperature compaction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE376856B (de) * 1968-12-13 1975-06-16 Sumitomo Electric Industries
GB2051881B (en) * 1979-07-04 1983-02-09 Neil Holdings Ltd James Carbonitriding ferrous materials
DE3807096A1 (de) * 1988-03-04 1989-09-14 Bayer Ag Verfahren zur herstellung von gummi/metall-verbundmaterialien mit hoher gummi/metall-haftung
JPH03219050A (ja) * 1990-01-24 1991-09-26 Komatsu Ltd 耐摩耗摺動材とその製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368630A (en) * 1993-04-13 1994-11-29 Hoeganaes Corporation Metal powder compositions containing binding agents for elevated temperature compaction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
E. KLAR (COORDINATOR): "Metals Handbook Ninth Ed. Vol. 7 Powder Metallurgy", 1984, ASM, USA, XP002188392 *

Also Published As

Publication number Publication date
DE19752505C1 (de) 1999-04-08
EP0919635A2 (de) 1999-06-02

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