EP1249510A3 - Process for preparing tool steel articles by powder metallurgy - Google Patents

Process for preparing tool steel articles by powder metallurgy Download PDF

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Publication number
EP1249510A3
EP1249510A3 EP01890158A EP01890158A EP1249510A3 EP 1249510 A3 EP1249510 A3 EP 1249510A3 EP 01890158 A EP01890158 A EP 01890158A EP 01890158 A EP01890158 A EP 01890158A EP 1249510 A3 EP1249510 A3 EP 1249510A3
Authority
EP
European Patent Office
Prior art keywords
temperature
tool steel
powder
powder metallurgy
melt
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
EP01890158A
Other languages
German (de)
French (fr)
Other versions
EP1249510B2 (en
EP1249510B1 (en
EP1249510A2 (en
Inventor
Claes Dipl.-Ing. Tornberg
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 Boehler Edelstahl GmbH
Original Assignee
Boehler 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3677034&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1249510(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Boehler Edelstahl GmbH filed Critical Boehler Edelstahl GmbH
Priority to SI200130841T priority Critical patent/SI1249510T2/en
Publication of EP1249510A2 publication Critical patent/EP1249510A2/en
Publication of EP1249510A3 publication Critical patent/EP1249510A3/en
Application granted granted Critical
Publication of EP1249510B1 publication Critical patent/EP1249510B1/en
Publication of EP1249510B2 publication Critical patent/EP1249510B2/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
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0848—Melting process before atomisation
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0848—Melting process before atomisation
    • B22F2009/0852—Electroslag 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0896—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2241/00—Treatments in a special environment
    • C21D2241/01—Treatments in a special environment under pressure
    • C21D2241/02—Hot isostatic pressing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

Production of thick deformed or non-deformed objects made from tool steel comprises pouring a melt into a metallurgical vessel; conditioning to improve the degree of purity; adjusting the temperature to a value above the formation temperature of primary precipitation in the alloy; forming a powder having an average grain size of 50-70 mu m from the melt at constant temperature by injection nitrogen; disintegrating in the nitrogen stream; grading the powder; collecting, mixing and pouring into a container and compacting by hot isostatic pressing. The parameters of the pressing cycle are adjusted so that the temperature and pressure in the heating process are elevated.
EP01890158.7A 2001-04-11 2001-05-25 Process for preparing tool steel articles by powder metallurgy Expired - Lifetime EP1249510B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130841T SI1249510T2 (en) 2001-04-11 2001-05-25 Process for preparing tool steel articles by powder metallurgy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT5852001 2001-04-11
AT0058501A AT411580B (en) 2001-04-11 2001-04-11 METHOD FOR THE POWDER METALLURGICAL PRODUCTION OF OBJECTS

Publications (4)

Publication Number Publication Date
EP1249510A2 EP1249510A2 (en) 2002-10-16
EP1249510A3 true EP1249510A3 (en) 2004-01-21
EP1249510B1 EP1249510B1 (en) 2008-05-07
EP1249510B2 EP1249510B2 (en) 2014-10-29

Family

ID=3677034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890158.7A Expired - Lifetime EP1249510B2 (en) 2001-04-11 2001-05-25 Process for preparing tool steel articles by powder metallurgy

Country Status (8)

Country Link
US (1) US6506227B1 (en)
EP (1) EP1249510B2 (en)
AT (2) AT411580B (en)
DE (1) DE50113936D1 (en)
DK (1) DK1249510T4 (en)
ES (1) ES2305049T5 (en)
PT (1) PT1249510E (en)
SI (1) SI1249510T2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111014704A (en) * 2020-01-03 2020-04-17 东南大学 Preparation method of powder metallurgy tool and die steel

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409235B (en) * 1999-01-19 2002-06-25 Boehler Edelstahl METHOD AND DEVICE FOR PRODUCING METAL POWDER
AT410448B (en) * 2001-04-11 2003-04-25 Boehler Edelstahl COLD WORK STEEL ALLOY FOR THE POWDER METALLURGICAL PRODUCTION OF PARTS
US20060249230A1 (en) * 2005-05-09 2006-11-09 Crucible Materials Corp. Corrosion and wear resistant alloy
CN103741042B (en) * 2013-12-19 2015-12-09 马鞍山市方圆材料工程有限公司 A kind of high abrasion cold roll alloy material and preparation method thereof
GB2577788B (en) 2018-08-07 2021-09-29 Bae Systems Plc Hot isostatic pressing consolidation of powder derived parts
EP3608041A1 (en) * 2018-08-07 2020-02-12 BAE SYSTEMS plc Hot isostatic pressing consolidation of powder derived parts
CN112279254B (en) * 2019-07-24 2022-07-15 比亚迪股份有限公司 Preparation method of silicon carbide powder and silicon carbide powder
CN116833409A (en) * 2021-11-29 2023-10-03 河冶科技股份有限公司 Method for preparing precipitation hardening high-speed steel by powder metallurgy process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875588A2 (en) * 1997-04-09 1998-11-04 Crucible Materials Corporation Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same
EP1022078A2 (en) * 1999-01-19 2000-07-26 BÖHLER Edelstahl GmbH Process and apparatus for preparing metal powder by gas atomisation
EP1075886A2 (en) * 1999-08-13 2001-02-14 Crucible Materials Corporation Hot isostatic compacting of high alloy tool steel particles

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338369C1 (en) * 1983-10-21 1985-09-26 Nyby Uddeholm Powder AB, Torshälla Process for the manufacture of powder metallurgical objects
SE462837B (en) * 1988-07-04 1990-09-10 Kloster Speedsteel Ab Method for producing a nitrogen-alloyed steel by powder metallurgy
AT395230B (en) * 1989-11-16 1992-10-27 Boehler Gmbh METHOD FOR PRODUCING PRE-MATERIAL FOR WORKPIECES WITH A HIGH PROPORTION OF METAL CONNECTIONS
IT1241490B (en) * 1990-07-17 1994-01-17 Sviluppo Materiali Spa RAPID POWDER STEEL.
ATA240391A (en) * 1991-12-04 1994-10-15 Boehler Edelstahl STEEL OBJECT FOR PLASTIC MOLDS AND METHOD AND DEVICE FOR PRODUCING THE SAME
DE4334062A1 (en) * 1992-10-06 1994-04-07 Krupp Pulvermetall Gmbh Tool steel compsn. having high temp. strength - comprises manganese@, chromium@, molybdenum@, tungsten@, vanadium@, cobalt@ and nitrogen@
CA2131652C (en) * 1993-09-27 2004-06-01 William Stasko Sulfur-containing powder-metallurgy tool steel article
EP0814172B1 (en) * 1996-06-17 2002-09-11 Hau, Hanspeter Powder metallurgy hot-work tool steel, and process for its manufacture
SE508872C2 (en) * 1997-03-11 1998-11-09 Erasteel Kloster Ab Powder metallurgically made steel for tools, tools made therefrom, process for making steel and tools and use of steel
US5976459A (en) * 1998-01-06 1999-11-02 Crucible Materials Corporation Method for compacting high alloy tool steel particles
US6168755B1 (en) * 1998-05-27 2001-01-02 The United States Of America As Represented By The Secretary Of Commerce High nitrogen stainless steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0875588A2 (en) * 1997-04-09 1998-11-04 Crucible Materials Corporation Wear resistant, powder metallurgy cold work tool steel articles having high impact toughness and a method for producing the same
EP1022078A2 (en) * 1999-01-19 2000-07-26 BÖHLER Edelstahl GmbH Process and apparatus for preparing metal powder by gas atomisation
EP1075886A2 (en) * 1999-08-13 2001-02-14 Crucible Materials Corporation Hot isostatic compacting of high alloy tool steel particles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"SOEDERFORS POWDER AB NEW GENERATION HIGH SPEED STEEL POWDERS", POWDER METALLURGY, METALS SOCIETY. LONDON, GB, vol. 39, no. 3, 1996, pages 176 - 178, XP000641580, ISSN: 0032-5899 *
TORNBERG,C, AND BENGTSSON,B-O: "ESH: a tundish metallurgical process improving the properties of PM tool steels", SCANDINAVIAN JOURNAL OF METALLURGY, vol. 25, no. 1, February 1996 (1996-02-01), Copenhagen, pages 36 - 40, XP008024959 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111014704A (en) * 2020-01-03 2020-04-17 东南大学 Preparation method of powder metallurgy tool and die steel

Also Published As

Publication number Publication date
SI1249510T2 (en) 2015-02-27
ATE394515T1 (en) 2008-05-15
EP1249510B2 (en) 2014-10-29
PT1249510E (en) 2008-08-12
SI1249510T1 (en) 2008-10-31
US6506227B1 (en) 2003-01-14
AT411580B (en) 2004-03-25
ATA5852001A (en) 2003-08-15
EP1249510B1 (en) 2008-05-07
DE50113936D1 (en) 2008-06-19
DK1249510T3 (en) 2008-09-29
DK1249510T4 (en) 2015-02-02
EP1249510A2 (en) 2002-10-16
ES2305049T5 (en) 2014-12-22
ES2305049T3 (en) 2008-11-01

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