EP1129803A3 - Material prepared by powder metallurgy with improved isotropy of the mechanical properties - Google Patents

Material prepared by powder metallurgy with improved isotropy of the mechanical properties Download PDF

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Publication number
EP1129803A3
EP1129803A3 EP01890047A EP01890047A EP1129803A3 EP 1129803 A3 EP1129803 A3 EP 1129803A3 EP 01890047 A EP01890047 A EP 01890047A EP 01890047 A EP01890047 A EP 01890047A EP 1129803 A3 EP1129803 A3 EP 1129803A3
Authority
EP
European Patent Office
Prior art keywords
flat
subjected
blank
section
cross
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
EP01890047A
Other languages
German (de)
French (fr)
Other versions
EP1129803A2 (en
EP1129803B1 (en
Inventor
Siegfried Dipl.-Ing. Wilmes
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.)
Voestalpine Edelstahl GmbH
Original Assignee
Voestalpine Edelstahl 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 Voestalpine Edelstahl GmbH filed Critical Voestalpine Edelstahl GmbH
Priority to EP06025501A priority Critical patent/EP1779947A1/en
Publication of EP1129803A2 publication Critical patent/EP1129803A2/en
Publication of EP1129803A3 publication Critical patent/EP1129803A3/en
Application granted granted Critical
Publication of EP1129803B1 publication Critical patent/EP1129803B1/en
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
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 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
    • B22F3/16—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
    • 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
    • B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
    • 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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/006—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of flat products, e.g. sheets
    • 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)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Forging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur pulvermetallurgischen Herstellung von verbesserte Isotropie der mechanischen Eigenschaften aufweisendem Material mit rechteckigem oder flachelliptischem Querschnitt, sogenannten Breit-Flach-Material, insbesondere Vormaterial für die Herstellung von Schneid-, Stanz- und Umformwerkzeugen, bei welchem Verfahren ein mit Gas hergestelltes, insbesondere mit Stickstoff verdüstes Pulver einer Legierung in eine Kapsel eingebracht, verdichtet und diese, gegebenefalls nach einem Evakuieren, verschlossen wird, wonach ein Erwärmen und isostatisches Pressen (HIP-en) der Pulverkapsel erfolgen und der derart hergestellte heißisostatisch gepreßte Rohling einer Verformung durch Schmieden und/oder Walzen unterworfen wird.The invention relates to a method for the powder metallurgical production of improved isotropy of the material having mechanical properties rectangular or flat-elliptical cross-section, so-called wide-flat material, especially raw material for the production of cutting, punching and Forming tools, in which method a gas-made in particular a nitrogen-atomized powder of an alloy in a capsule introduced, compressed and this, if necessary after an evacuation, is closed, after which heating and isostatic pressing (HIP-en) of the Powder capsule and the hot isostatically pressed blank produced in this way is subjected to deformation by forging and / or rolling.

Um in Dickenrichtung des Querschnittes bei einer Längsbeanspruchung hohe Zähigkeitseigenschaften zu erzielen, ist erfindungsgemäß vorgesehen, daß ein Rohling mit einer derart rechteckigen oder flachelliptischen Querschnittsform erstellt und einer Umformung unterworfen wird, daß bei dieser der Unterschied zwischen der Verformung in Richtung der Breite und der Verformung in Dickenrichtung des Querschnittes des Breit-Flach-Materials höchstens das 2-fache, vorzugsweise höchstens das 1,5-fache des niedrigeren Verformungswertes beträgt oder daß der heißisostatisch gepeßte Rohling in Richtung der Längserstreckung einer Stauchumformung mit einem mindestens zweifachen Stauchgrad unterworfen wird, wonach eine Reckumformung des gestauchten Rohlings unter Ausformung des Breit-Flach-Materials erfolgt, oder daß der heißisostatisch gepreßte Rohling einer Diffusionsglühbehandlung mit einer höchsten Temperatur von 20°C unterhalb der Solidustemperatur der Legierung und einer Mindestglühdauer von 4 Stunden unterworfen wird, wonach dieser durch Reckumformung zu einem Breit-Flach-Material geschmiedet und/oder gewalzt wird.To be high in the thickness direction of the cross section with a longitudinal stress To achieve toughness properties, the invention provides that a Blank with such a rectangular or flat elliptical cross-sectional shape created and is subjected to a transformation that the difference between the deformation in the width direction and the deformation in the thickness direction of the Cross-section of the wide-flat material at most 2 times, preferably is at most 1.5 times the lower deformation value or that the hot isostatically pressed blank in the direction of the longitudinal extent of a Is subjected to upsetting with at least twice the amount of upsetting, whereupon a stretch forming of the compressed blank while shaping the Wide flat material takes place, or that the hot isostatically pressed blank one Diffusion annealing treatment with a maximum temperature of 20 ° C below the Solidus temperature of the alloy and a minimum annealing time of 4 hours is subjected, after which this by stretching to a Wide flat material is forged and / or rolled.

Ein erfindungsgemäß hergestelltes Material ist dadurch gekennzeichnet, daß die Zähigkeit des Werkstoffes gemessen in jeglicher Richtung, insbesondere in Dickenrichtung des Querschnittes des Materials, größer ist als jene des Werkstoffes im heißisostatisch gepreßten umverformten Zustand.A material produced according to the invention is characterized in that the Toughness of the material measured in any direction, especially in Thickness direction of the cross section of the material is larger than that of the material in the hot isostatically pressed, deformed state.

EP01890047A 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties Expired - Lifetime EP1129803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06025501A EP1779947A1 (en) 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0034900A AT409831B (en) 2000-03-03 2000-03-03 METHOD FOR THE POWDER METALLURGICAL PRODUCTION OF PRE-MATERIAL AND PRE-MATERIAL
AT3492000 2000-03-03

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06025501A Division EP1779947A1 (en) 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties

Publications (3)

Publication Number Publication Date
EP1129803A2 EP1129803A2 (en) 2001-09-05
EP1129803A3 true EP1129803A3 (en) 2001-10-04
EP1129803B1 EP1129803B1 (en) 2006-12-20

Family

ID=3672384

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01890047A Expired - Lifetime EP1129803B1 (en) 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties
EP06025501A Ceased EP1779947A1 (en) 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06025501A Ceased EP1779947A1 (en) 2000-03-03 2001-02-23 Material prepared by powder metallurgy with improved isotropy of the mechanical properties

Country Status (8)

Country Link
US (1) US6630102B2 (en)
EP (2) EP1129803B1 (en)
JP (2) JP2001316706A (en)
AT (2) AT409831B (en)
DE (1) DE50111660D1 (en)
DK (1) DK1129803T3 (en)
ES (1) ES2275645T3 (en)
PT (1) PT1129803E (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10340133B3 (en) * 2003-08-28 2005-02-03 Eads Deutschland Gmbh Reducing oxides on surface of metal particles during sintering comprises applying layer of fullerenes to them before sintering, which is carried out below melting point of metal
US8778259B2 (en) 2011-05-25 2014-07-15 Gerhard B. Beckmann Self-renewing cutting surface, tool and method for making same using powder metallurgy and densification techniques
EP2662166A1 (en) * 2012-05-08 2013-11-13 Böhler Edelstahl GmbH & Co KG Material with high wear resistance
RU2504455C1 (en) * 2012-11-01 2014-01-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" Method of making billets from metal powders

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726447A1 (en) * 1986-08-12 1988-02-18 Bbc Brown Boveri & Cie Process for powder-metallurgical production of a workpiece based on an aluminium alloy having high strength in the range between room temperature and 300@C
DD279428A1 (en) * 1989-01-16 1990-06-06 Freiberg Bergakademie METHOD FOR THE POWDER METALLURGIC MANUFACTURE OF QUICK WORKING STEEL

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE279428C (en)
US4121927A (en) * 1974-03-25 1978-10-24 Amsted Industries Incorporated Method of producing high carbon hard alloys
US3966422A (en) * 1974-05-17 1976-06-29 Cabot Corporation Powder metallurgically produced alloy sheet
US4479833A (en) * 1981-06-26 1984-10-30 Bbc Brown, Boveri & Company, Limited Process for manufacturing a semi-finished product or a finished component from a metallic material by hot working
SE451549B (en) * 1983-05-09 1987-10-19 Kloster Speedsteel Ab POWDER METAL SURGICAL METHOD TO MAKE METAL BODIES OF MAGNETIZABLE SPHERICAL POWDER
DE3530741C1 (en) * 1985-08-28 1993-01-14 Avesta Nyby Powder AB, Torshälla Process for the manufacture of powder metallurgical objects
US5201966A (en) * 1989-08-31 1993-04-13 Hitachi Powdered Metals, Co., Ltd. Method for making cylindrical, iron-based sintered slugs of specified porosity for subsequent plastic deformation processing
AT395230B (en) * 1989-11-16 1992-10-27 Boehler Gmbh METHOD FOR PRODUCING PRE-MATERIAL FOR WORKPIECES WITH A HIGH PROPORTION OF METAL CONNECTIONS
JPH0474804A (en) * 1990-07-16 1992-03-10 Mitsubishi Heavy Ind Ltd Manufacture of rectangular material from hardened powder material in high temperature range
JPH0533012A (en) * 1991-07-24 1993-02-09 Sumitomo Metal Ind Ltd Method for working steel reinforced by dispersion with small plane anisotropy
JPH09194905A (en) * 1996-01-16 1997-07-29 Mitsubishi Heavy Ind Ltd Production of cutting tool and so on
JPH09310108A (en) * 1996-05-16 1997-12-02 Daido Steel Co Ltd Manufacture of blank for die and blank for die
US5830287A (en) * 1997-04-09 1998-11-03 Crucible Materials Corporation Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726447A1 (en) * 1986-08-12 1988-02-18 Bbc Brown Boveri & Cie Process for powder-metallurgical production of a workpiece based on an aluminium alloy having high strength in the range between room temperature and 300@C
DD279428A1 (en) * 1989-01-16 1990-06-06 Freiberg Bergakademie METHOD FOR THE POWDER METALLURGIC MANUFACTURE OF QUICK WORKING STEEL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WILMES S: "PULVERMETALLURGISCHE WERKZEUGSTAHLE - HERSTELLUNG, EIGENSCHAFTEN UND ANWENDUNG", STAHL UND EISEN,DE,VERLAG STAHLEISEN GMBH. DUSSELDORF, vol. 110, no. 1, 15 January 1990 (1990-01-15), pages 93 - 103, XP000103109, ISSN: 0340-4803 *

Also Published As

Publication number Publication date
US20010022945A1 (en) 2001-09-20
DK1129803T3 (en) 2007-04-30
JP2001316706A (en) 2001-11-16
EP1779947A1 (en) 2007-05-02
EP1129803A2 (en) 2001-09-05
JP2010047840A (en) 2010-03-04
ATE348673T1 (en) 2007-01-15
ES2275645T3 (en) 2007-06-16
DE50111660D1 (en) 2007-02-01
PT1129803E (en) 2007-03-30
US6630102B2 (en) 2003-10-07
EP1129803B1 (en) 2006-12-20
ATA3492000A (en) 2002-04-15
AT409831B (en) 2002-11-25

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