EP1246950B1 - Pressen und sintern von stahlpulver - Google Patents

Pressen und sintern von stahlpulver Download PDF

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Publication number
EP1246950B1
EP1246950B1 EP00981941A EP00981941A EP1246950B1 EP 1246950 B1 EP1246950 B1 EP 1246950B1 EP 00981941 A EP00981941 A EP 00981941A EP 00981941 A EP00981941 A EP 00981941A EP 1246950 B1 EP1246950 B1 EP 1246950B1
Authority
EP
European Patent Office
Prior art keywords
mpa
compacting
temperature
sintering
presintering
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.)
Expired - Lifetime
Application number
EP00981941A
Other languages
English (en)
French (fr)
Other versions
EP1246950A1 (de
Inventor
Hanna; WIŚNIEWSKA-WEINERT
Ewgienij Stepanowicz; Sewastianow
Michajlowicz Leszczynski Wolf
Aleksandr Anatolewicz; Stojanow
Jurij Jakowlewicz; Kuczma
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.)
Instytut Obrobki Plastycznej
Original Assignee
Instytut Obrobki Plastycznej
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 Instytut Obrobki Plastycznej filed Critical Instytut Obrobki Plastycznej
Publication of EP1246950A1 publication Critical patent/EP1246950A1/de
Application granted granted Critical
Publication of EP1246950B1 publication Critical patent/EP1246950B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (7)

  1. Verfahren zum Herstellen von geformten Elementen durch Sintern und Pressen von Pulver-Mischungen, die Stahl und Legierungszusätze enthalten, bei dem ein vorgeformtes, halbfertiges Produkt durch Vorsintern und erstes Verdichten unter einem Druck von 700-800 MPa und dann durch ein zweites Verdichten mit gleichzeitiger Kalibrierung unter einem Druck von 900-1000 MPa bearbeitet wird, und dann durch Endsintern bei einer Temperatur von 1100-1200 °C bearbeitet wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Vorsinter-Bearbeitung in einer dissoziierten Ammoniak-Atmosphäre bei einer Temperatur von 700-750 °C, vorzugsweise 720-730 °C, durchgeführt wird.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Vorsinter-Bearbeitung für 20-40 Minuten, vorzugsweise 30 Minuten, durchgeführt wird.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der erste Verdichtungsdruck 750 MPa beträgt.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der zweite Verdichtungsdruck 950 MPa beträgt.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Endsinter-Temperatur 1120-1150 °C beträgt.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Endsintern für 40-50 Minuten, vorzugsweise 45 Minuten, durchgeführt wird.
EP00981941A 1999-12-31 2000-12-14 Pressen und sintern von stahlpulver Expired - Lifetime EP1246950B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PL337637A PL191806B1 (pl) 1999-12-31 1999-12-31 Sposób otrzymywania elementów kształtowych
PL33763799 1999-12-31
PCT/PL2000/000098 WO2001049891A1 (en) 1999-12-31 2000-12-14 Compacting and sintering steel powder

Publications (2)

Publication Number Publication Date
EP1246950A1 EP1246950A1 (de) 2002-10-09
EP1246950B1 true EP1246950B1 (de) 2003-07-23

Family

ID=20075799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00981941A Expired - Lifetime EP1246950B1 (de) 1999-12-31 2000-12-14 Pressen und sintern von stahlpulver

Country Status (5)

Country Link
EP (1) EP1246950B1 (de)
AT (1) ATE245715T1 (de)
DE (1) DE60004106T2 (de)
PL (1) PL191806B1 (de)
WO (1) WO2001049891A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002714B3 (de) * 2004-01-19 2005-05-19 SCHWäBISCHE HüTTENWERKE GMBH Verfahren zum Leichtmetall-Legierungs-Sintern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2648519B2 (ja) * 1989-10-03 1997-09-03 日立粉末冶金株式会社 シンクロナイザーハブの製造方法
US5080712B1 (en) * 1990-05-16 1996-10-29 Hoeganaes Corp Optimized double press-double sinter powder metallurgy method
AU723317B2 (en) * 1996-05-13 2000-08-24 Gkn Sinter Metals Inc. Method for preparing high performance ferrous materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002714B3 (de) * 2004-01-19 2005-05-19 SCHWäBISCHE HüTTENWERKE GMBH Verfahren zum Leichtmetall-Legierungs-Sintern

Also Published As

Publication number Publication date
PL337637A1 (en) 2001-07-02
ATE245715T1 (de) 2003-08-15
WO2001049891A1 (en) 2001-07-12
EP1246950A1 (de) 2002-10-09
DE60004106D1 (de) 2003-08-28
DE60004106T2 (de) 2004-04-22
PL191806B1 (pl) 2006-07-31

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