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EP0327064A3 - Process for preparing articles by powder metallurgy, especially elongated articles such as rods, sections, tubes or such - Google Patents

Process for preparing articles by powder metallurgy, especially elongated articles such as rods, sections, tubes or such Download PDF

Info

Publication number
EP0327064A3
EP0327064A3 EP89101731A EP89101731A EP0327064A3 EP 0327064 A3 EP0327064 A3 EP 0327064A3 EP 89101731 A EP89101731 A EP 89101731A EP 89101731 A EP89101731 A EP 89101731A EP 0327064 A3 EP0327064 A3 EP 0327064A3
Authority
EP
European Patent Office
Prior art keywords
capsule
temperature
blank
pressed
heated
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.)
Ceased
Application number
EP89101731A
Other languages
German (de)
French (fr)
Other versions
EP0327064A2 (en
Inventor
Christer Aslund
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.)
ANVAL NYBY POWDER AB
Original Assignee
ANVAL NYBY POWDER AB
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
Priority claimed from SE8800365A external-priority patent/SE8800365D0/en
Priority claimed from SE8800366A external-priority patent/SE8800366D0/en
Application filed by ANVAL NYBY POWDER AB filed Critical ANVAL NYBY POWDER AB
Publication of EP0327064A2 publication Critical patent/EP0327064A2/en
Publication of EP0327064A3 publication Critical patent/EP0327064A3/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • 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
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Metal Rolling (AREA)

Abstract

Verfahren zur Herstellung pulvermetallurgischer Gegen­ stände, insbesondere langgestreckter Gegenstände, wie Stangen, Profile, Rohre od. dgl., bei dem Pulver aus Metall und/oder Metallegierungen hoher Härte, insbeson­ dere Werkzeugstahl- oder Schnellstahlpulver, in eine dünnwandige Kapsel eingefüllt, die Kapsel anschließend luftdicht verschlossen, erwärmt und unter Herstellung eines Rohlings isostatisch verpreßt wird, der dann zum Endprodukt warmverformt, insbesondere stranggepreßt wird. Bei einer ersten Alternative wird die luftdicht verschlossene Kapsel zunächst auf eine Temperatur von über 1000 °C erwärmt. Nach vollständiger Durchwärmung der Kapsel wird diese für eine längere Zeit bei erhöhter Temperatur gehalten. Anschließend erfolgt eine langsame Abkühlung der Kapsel, um vor der Endverformung kaltiso­ statisch verpreßt zu werden. Alternativ wird die Kapsel nach dem luftdichten Verschließen zunächst kaltisosta­ tisch verpreßt. Anschließend wird der Preßrohling auf eine Temperatur von über 1000 °C erwärmt. Nach vollstän­ diger Durchwärmung des Preßrohlings wird dieser für eine längere Zeit bei erhöhter Temperatur gehalten, um dann entweder unmittelbar oder nach vorheriger Abkühlung warmverformt, insbesondere stranggepreßt zu werden. Process for the preparation of powder metallurgical counter stands, especially elongated objects, such as Rods, profiles, pipes or the like, in the powder Metal and / or metal alloys of high hardness, in particular tool steel or high-speed steel powder, in one filled thin-walled capsule, then the capsule hermetically sealed, heated and under production of a blank is pressed isostatically, which then for The end product is thermoformed, especially extruded becomes. In the first alternative, it becomes airtight sealed capsule initially to a temperature of heated above 1000 ° C. After full warming the capsule will become elevated for a longer period of time Temperature maintained. Then there is a slow one Cooling of the capsule to be cold iso before final deformation to be statically pressed. Alternatively, the capsule after the airtight seal, first cold isosta pressed table. The blank is then opened heated to a temperature of over 1000 ° C. After complete diger warming of the press blank for one held at elevated temperature for a long time, then either immediately or after cooling to be thermoformed, especially to be extruded.

EP89101731A 1988-02-05 1989-02-01 Process for preparing articles by powder metallurgy, especially elongated articles such as rods, sections, tubes or such Ceased EP0327064A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8800365A SE8800365D0 (en) 1988-02-05 1988-02-05 METALLURGICAL PROCEDURE II
SE8800365 1988-02-05
SE8800366 1988-02-05
SE8800366A SE8800366D0 (en) 1988-02-05 1988-02-05 METALLURGICAL PROCEDURE I

Publications (2)

Publication Number Publication Date
EP0327064A2 EP0327064A2 (en) 1989-08-09
EP0327064A3 true EP0327064A3 (en) 1989-12-20

Family

ID=26660106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101731A Ceased EP0327064A3 (en) 1988-02-05 1989-02-01 Process for preparing articles by powder metallurgy, especially elongated articles such as rods, sections, tubes or such

Country Status (4)

Country Link
US (1) US4923671A (en)
EP (1) EP0327064A3 (en)
JP (1) JPH01287205A (en)
KR (1) KR890012729A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2681807B2 (en) * 1988-09-21 1997-11-26 株式会社トーキン Manufacturing method of metal compact by hot isostatic pressing
FR2680127A1 (en) * 1991-08-09 1993-02-12 Anor Acieries Forges PROCESS FOR COLINATING RAPID STEEL ON SOFT STEEL.
US5561829A (en) * 1993-07-22 1996-10-01 Aluminum Company Of America Method of producing structural metal matrix composite products from a blend of powders
US5482672A (en) * 1995-02-09 1996-01-09 Friedman; Ira Process for extruding tantalum and/or niobium
ATE223975T1 (en) * 1996-06-17 2002-09-15 Hau Hanspeter PM HOT WORK STEEL AND METHOD FOR PRODUCING THE SAME
US5885379A (en) * 1997-03-28 1999-03-23 The Landover Company Tempered powdered metallurgical construct and method
US7625520B2 (en) * 2003-11-18 2009-12-01 Dwa Technologies, Inc. Manufacturing method for high yield rate of metal matrix composite sheet production
EP2014394A1 (en) * 2007-07-13 2009-01-14 Alcan Technology & Management Ltd. Method, where metal powder, which has been heated by microwaves, is extruded
IT1395649B1 (en) * 2009-07-31 2012-10-16 Avio Spa PROCESS OF MANUFACTURE OF COMPONENTS OBTAINED BY SINTERING CO-CR-MO ALLOYS WITH IMPROVED DUCTILITY AT HIGH TEMPERATURES
KR101366821B1 (en) * 2011-11-03 2014-02-27 한국생산기술연구원 Method for plastic deformation of bulk metallic glass in a high temperature and atmospheric pressure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2659433A1 (en) * 1975-12-30 1977-07-14 Davy Loewy Ltd PROCESS FOR MANUFACTURING BODIES FROM METAL POWDER
DE2419014B2 (en) * 1974-04-19 1979-10-11 Nyby Bruk Ab, Nybybruk (Schweden) Method of manufacturing stainless steel pipes and application of the method to the manufacture of composite pipes
GB1590953A (en) * 1977-10-04 1981-06-10 Powdrex Ltd Making articles from metallic powder
EP0165409A1 (en) * 1984-05-22 1985-12-27 Kloster Speedsteel Aktiebolag Method of producing high speed steel products metallurgically
EP0252193A1 (en) * 1986-07-10 1988-01-13 Worl-Tech Limited Manufacture and consolidation of alloy metal powder billets

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846660C2 (en) * 1978-10-26 1984-03-08 Gränges Nyby AB, Nybybruk Annular casing for extrusion bolts for the powder metallurgical production of pipes
US4460541A (en) * 1980-01-16 1984-07-17 Reynolds Metals Company Aluminum powder metallurgy
AT377718B (en) * 1980-02-13 1985-04-25 Uk Nii Sp Stalej METHOD FOR PRODUCING TOOLS FROM TOOL STEEL POWDER
SE426791B (en) * 1980-04-25 1983-02-14 Asea Ab PROCEDURE FOR STRESSING A POWDER-FILLED Capsule
DE3582066D1 (en) * 1984-10-26 1991-04-11 Agency Ind Science Techn METHOD FOR PRODUCING SUPER HEAT-STABLE ALLOY MATERIAL.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419014B2 (en) * 1974-04-19 1979-10-11 Nyby Bruk Ab, Nybybruk (Schweden) Method of manufacturing stainless steel pipes and application of the method to the manufacture of composite pipes
DE2659433A1 (en) * 1975-12-30 1977-07-14 Davy Loewy Ltd PROCESS FOR MANUFACTURING BODIES FROM METAL POWDER
GB1590953A (en) * 1977-10-04 1981-06-10 Powdrex Ltd Making articles from metallic powder
EP0165409A1 (en) * 1984-05-22 1985-12-27 Kloster Speedsteel Aktiebolag Method of producing high speed steel products metallurgically
EP0252193A1 (en) * 1986-07-10 1988-01-13 Worl-Tech Limited Manufacture and consolidation of alloy metal powder billets

Also Published As

Publication number Publication date
US4923671A (en) 1990-05-08
JPH01287205A (en) 1989-11-17
KR890012729A (en) 1989-09-19
EP0327064A2 (en) 1989-08-09

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