EP1249510B2 - Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl - Google Patents

Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl Download PDF

Info

Publication number
EP1249510B2
EP1249510B2 EP01890158.7A EP01890158A EP1249510B2 EP 1249510 B2 EP1249510 B2 EP 1249510B2 EP 01890158 A EP01890158 A EP 01890158A EP 1249510 B2 EP1249510 B2 EP 1249510B2
Authority
EP
European Patent Office
Prior art keywords
powder
melt
temperature
container
process according
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
EP01890158.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1249510A3 (de
EP1249510A2 (de
EP1249510B1 (de
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(B2) "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/sl
Publication of EP1249510A2 publication Critical patent/EP1249510A2/de
Publication of EP1249510A3 publication Critical patent/EP1249510A3/de
Application granted granted Critical
Publication of EP1249510B1 publication Critical patent/EP1249510B1/de
Publication of EP1249510B2 publication Critical patent/EP1249510B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to a process for powder metallurgy production of tool steel articles having improved homogeneity, higher purity and improved properties.
  • Tool steels with high carbon concentrations and high levels of carbide-forming elements are used for cutting parts and components with high wear resistance. Because in a solidification of such alloys in molds inhomogeneities and coarse primary and eutectic carbides are formed which cause manufacturing problems and poor mechanical properties of the tools or components created therefrom, powder metallurgy production of such parts is advantageous.
  • Powder metallurgy production essentially involves atomizing a tool steel melt into metal powder, introducing and compacting the metal powder into a container, sealing the capsule, and heating and hot isostatically pressing the powder in the capsule into a dense homogeneous material.
  • melt atomization which is advantageously nitrogen-based in the prior art
  • small metal droplets having a high surface to volume ratio are formed in the gas stream, causing a high rate of cooling and solidification of the liquid metal and thereby small carbide particles in the powder grains.
  • the powder compacted at first by tapping in the capsule is then formed therein by hot isostatic pressing at temperatures generally above 1080 ° C, at a pressure of greater than 85 MPa, to form a completely dense metal body.
  • This as-HIPed metal body which can still be subjected to hot forming, has an advantageously low carbide size of on average 1-3 ⁇ m at high carbide content and good mechanical material properties in comparison with a melt metallurgical production.
  • the invention seeks to remedy and sets itself the goal of eliminating the lack of quality of the state-of-the-art PM tool steel objects and to provide a method of the type mentioned above, with which an isostatically pressed metal body with the highest material isotropy and lowest content oxide inclusions can be produced.
  • the advantages achieved by the method according to the invention are essentially based on the fact that synergistically improved metallurgical work on a melt introduced into a metallurgical vessel whose oxidic purity significantly and the temperature is adjusted homogeneously to an advantageous overheating value, after which an atomization of the liquid metal takes place in that the mean grain diameter is 50 to 70 ⁇ m.
  • This ensures that on the one hand in the powder, the oxygen content is surprisingly low and on the other hand, the fine grain content is substantially increased in terms of achieving a high tapping and Jottelêt in the capsule.
  • An inventive distribution of the grain diameter with an average value in the range of 50 to 70 microns allows reaching an unexpectedly high powder density in the capsule, so that on the one hand their shrinkage in hot isostatic pressing is low and on the other hand there is a largely complete isotropy of the pressed dense metal body.
  • the parameters for the hot isostatic press cycle involve warming up the powder in the container with substantially equal increases in temperature and pressure, thereby increasing material density and homogeneity already at this stage, as has been shown.
  • the subsequent pressing is carried out in the temperature range of 1100 ° C to 1180 ° C at a pressure of 90 MPa and greater with a period of at least three hours, followed by a slow cooling of the compact.
  • Lower pressing temperatures than 1100 ° C and pressures below 90 MPa and less pressing times than three hours can cause discontinuities in the material
  • the pressed body has a completely dense material structure after HIPing, so it can be processed in this state or after a hot forming into a tool.
  • the conditioned melt is introduced through a nozzle body in the metallurgical vessel with a melt flow diameter of 4.0 to 10.0 mm in an atomization chamber and in this with at least three consecutive nitrogen, with a purity of at least 99.999% nitrogen , Gas jet is acted upon with the proviso that the last loading of the melt stream is carried out by a gas jet, which at least in places has a speed which is greater than the speed of sound. Compliance with the melt flow diameter and the high kinetic energy of the gas flow of the metal stream cause a favorable particle size distribution and a desired fineness of the metal powder produced.
  • the conditioning and adjustment of the temperature of the liquid metal in the metallurgical vessel and the high degree of purity of the sputtering gas nitrogen are further the causes of a surprisingly high degree of purity or a low oxygen content of the powder and as a result of hot isostatically gerpeßten block.
  • a particularly significant increase in the quality of the article is achieved in its production by the process according to the invention, when the melt of an iron-based alloy containing in wt .-% Carbon (C) 0.52 to 3.74 Manganese (Mn) to 2.9 Chrome (Cr) to 21.0 Molybdenum (Mo) to 10.0 Nickel (Ni) optionally to 1.0 Cobalt (Co) to 20.8 Vanadin (V) to 14.9 Niobium (Nb) Tantalum (Ta) singly or in total to 2.0 Tungsten (W) to 20.0 Sulfur (S) to 0.5 and accompanying elements up to a cumulative concentration of 4.8 and impurities and iron as the remainder.
  • the above chemical composition of the tool steel includes particularly carbide-rich tool steels with high abrasion resistance and high cutting strength of the tools produced therefrom. Since high carbide contents usually worsen the mechanical properties of the material, their fundamental improvement by the method according to the invention is of particular importance. It has been found that these high mechanical characteristics, in particular the impact resistance of the material, are due to the small mean grain diameter of the powder, a homogeneous dense bed of the same in the capsule and the high degree of oxidic purity in isotropic structure of the hot isostatically pressed article ,
  • the oxidic purity of the liquid metal can be effectively improved by metallurgical work, when conditioning the melt in the metallurgical vessel at an induced turbulent flow thereof and at a complete coverage of the metal bath by liquid slag, which is heated in particular by direct passage of current, during a time of at least 15 minutes.
  • liquid slag which is heated in particular by direct passage of current, during a time of at least 15 minutes.
  • a release of oxygen compounds or oxides is promoted from the melt and a recording of the same in the hot slag, wherein the induced flow of the metal bath increases the efficiency.
  • the diameter of the powder grains atomization technology is adjusted or classified to a maximum value of 500 microns.
  • the powder collected in a staging area fluidized by nitrogen and mixed and introduced while maintaining the nitrogen atmosphere in a container or a capsule with a total weight of greater than 0.5 t, compressed by mechanical shocks and sealed gas-tight.
  • the heat-soaking time can be shortened due to increased heat conduction and the powder mass can be precompressed with respect to a substantially complete block isotropy.
  • the inventive method provides a tool steel article with improved processing and performance characteristics with increased service life. These advantages were in a powder metallurgically produced article of tool steel with improved material properties consisting of an iron-based alloy containing in wt .-% Carbon (C) 0.52 to 3.74 Manganese (Mn) to 2.9 Chromium (Ce) to 21.0 Molybdenum (Mo) to 10.0 Nickel (Ni) optionally to 1.0 Cobalt (Co) to 20.8 Vanadin (V) to 14.9 Niobium (Nb) Tantalum (Ta) singly or in total to 2.0 Tungsten (W) to 20.0 Sulfur (S) to 0.5 and accompanying elements up to a total concentration of 4.8 and impurities and iron as the remainder, which material according to DIN 50 602 has a K0-W of at most 3, achieved.
  • Tool steels have a wide range of the concentration of the respective alloying elements, which always interact and are seen in terms of carbon content.
  • Lower carbon contents than 0.52 wt .-% lead to a low carbide content and / or low matrix hardness in the thermally tempered state of the steel, whereas higher than 3.74 wt .-% carbon, even in a powder metallurgical production, the material largely preclude use as a tool due to the mechanical property profile.
  • the high affinity for carbon of the elements Mo, V, Nb / Ta and W causes in appropriate proportions a desired carbide and Mischkarbid produced in an alloyed matrix.
  • concentration values in wt% 10.0, 14.9; 2.0; 20.0 are not exceeded because on the one hand a desired compensation behavior and on the other hand, the manufacturability and the intended mechanical properties of the materials can not be achieved.
  • Ni may optionally be present in the alloy without adverse effect up to a content of 1.0% by weight
  • Co increases the hot hardness and cutting strength of the tools, but has a property of 20.8 wt .-% property-degrading ..
  • Sulfur contents up to 0.5 wt .-% improve the machinability of the tool steel, but without affecting the degree of purity of the same disadvantageous, that the mechanical material values are lowered.
  • the tool steel has a defined according to DIN 50 602 K0 value of substantially at most 3.
  • This high degree of purity of the material not only causes a great improvement of the mechanical properties in the tempered state, for example, a significantly increased toughness of the material, but it also the performance characteristics, especially the cutting edge of fine-cut tools for hard objects are skyrocketed.
  • This increase in the quality of the powder metallurgy tool steel articles according to the invention has been found, in particular, to be due to the fact that the small proportion of smaller and the absence of larger non-metallic inclusions minimizes any crack initiation caused by them.
  • Powders prepared by a method according to the invention had a proportion of the total amount of 52% and a proportion of about 72% up to a particle size of up to 100 ⁇ m up to a particle diameter of 63 ⁇ m.
  • powders prepared according to the prior art have proportions of 21.7% and 36.2% for the same classes. If one compares the determined average particle size, then this is in the case of powder production according to the invention 61 microns, whereas in a powder production according to the prior art, a more than twice as large average particle size of 141 microns was determined.
  • Fig. 1 Inventive manufacturing method
  • Fig. 2 Prior art production method
  • Fig. 2 shows, in the comparative powder (prior art) segregation areas with an accumulation of coarse powder grains 1 and 2 fine fractions.
  • the powder produced according to the invention has largely homogeneity.
  • Fig. 3 Powder preparation according to the invention
  • Fig. 4 Comparative powder
  • Tool steels of the type described can, as was surprisingly found from the investigations, be alloyed with sulfur according to the invention up to a content of 0.5 wt .-%, without the content of non-metallic inclusions is substantially increased and a DIN-K0 value of greater than 3 sets.

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)
EP01890158.7A 2001-04-11 2001-05-25 Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl Expired - Lifetime EP1249510B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130841T SI1249510T2 (sl) 2001-04-11 2001-05-25 Postopek praškasto-metalurške izdelave predmetov iz orodnega jekla

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0058501A AT411580B (de) 2001-04-11 2001-04-11 Verfahren zur pulvermetallurgischen herstellung von gegenständen
AT5852001 2001-04-11

Publications (4)

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

Family

ID=3677034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890158.7A Expired - Lifetime EP1249510B2 (de) 2001-04-11 2001-05-25 Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl

Country Status (8)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409235B (de) * 1999-01-19 2002-06-25 Boehler Edelstahl Verfahren und vorrichtung zur herstellung von metallpulver
AT410448B (de) * 2001-04-11 2003-04-25 Boehler Edelstahl Kaltarbeitsstahllegierung zur pulvermetallurgischen herstellung von teilen
US20060249230A1 (en) * 2005-05-09 2006-11-09 Crucible Materials Corp. Corrosion and wear resistant alloy
CN103741042B (zh) * 2013-12-19 2015-12-09 马鞍山市方圆材料工程有限公司 一种高耐磨冷轧辊用合金材料及其制备方法
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 (zh) * 2019-07-24 2022-07-15 比亚迪股份有限公司 一种碳化硅粉的制备方法及碳化硅粉
CN111014704B (zh) * 2020-01-03 2021-01-05 东南大学 一种粉末冶金工模具钢的制备方法
CN116833409A (zh) * 2021-11-29 2023-10-03 河冶科技股份有限公司 粉末冶金工艺制备沉淀硬化高速钢的方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338369C1 (de) * 1983-10-21 1985-09-26 Nyby Uddeholm Powder AB, Torshälla Verfahren zur Herstellung pulvermetallurgischer Gegenstaende
SE462837B (sv) * 1988-07-04 1990-09-10 Kloster Speedsteel Ab Saett att pulvermetallurgiskt framstaella ett kvaevelegerat staal
AT395230B (de) * 1989-11-16 1992-10-27 Boehler Gmbh Verfahren zur herstellung von vormaterial fuer werkstuecke mit hohem anteil an metallverbindungen
IT1241490B (it) * 1990-07-17 1994-01-17 Sviluppo Materiali Spa Acciaio rapido da polveri.
ATA240391A (de) * 1991-12-04 1994-10-15 Boehler Edelstahl Gegenstand aus stahl für kunststofformen sowie verfahren und vorrichtung zu seiner herstellung
DE4334062A1 (de) * 1992-10-06 1994-04-07 Krupp Pulvermetall Gmbh Verwendung eines Stahls für warmfeste Werkzeuge
CA2131652C (en) * 1993-09-27 2004-06-01 William Stasko Sulfur-containing powder-metallurgy tool steel article
DE59609657D1 (de) * 1996-06-17 2002-10-17 Hau Hanspeter PM-Warmarbeitsstahl und Verfahren zu dessen Herstellung
SE508872C2 (sv) * 1997-03-11 1998-11-09 Erasteel Kloster Ab Pulvermetallurgiskt framställt stål för verktyg, verktyg framställt därav, förfarande för framställning av stål och verktyg samt användning av stålet
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
US6099796A (en) * 1998-01-06 2000-08-08 Crucible Materials Corp. Method for compacting high alloy steel particles
US5976459A (en) * 1998-01-06 1999-11-02 Crucible Materials Corporation Method for compacting high alloy tool steel particles
AU4100299A (en) * 1998-05-27 1999-12-13 U.S. Department of Commerce and National Institute of Standa rds and Technology High nitrogen stainless steel
AT409235B (de) * 1999-01-19 2002-06-25 Boehler Edelstahl Verfahren und vorrichtung zur herstellung von metallpulver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
T.A. TINGSKOG: "Advances in Powder Mettalurgy anD PARTICULATE MATERIALS", vol. 3, 1998, pages: 10-57 - 10-68 †

Also Published As

Publication number Publication date
SI1249510T2 (sl) 2015-02-27
US6506227B1 (en) 2003-01-14
DE50113936D1 (de) 2008-06-19
EP1249510A3 (de) 2004-01-21
ES2305049T5 (es) 2014-12-22
EP1249510A2 (de) 2002-10-16
DK1249510T3 (da) 2008-09-29
ATE394515T1 (de) 2008-05-15
ES2305049T3 (es) 2008-11-01
SI1249510T1 (sl) 2008-10-31
ATA5852001A (de) 2003-08-15
EP1249510B1 (de) 2008-05-07
AT411580B (de) 2004-03-25
PT1249510E (pt) 2008-08-12
DK1249510T4 (da) 2015-02-02

Similar Documents

Publication Publication Date Title
DE69818138T2 (de) Kaltarbeitswerkzeugstahlteilchen mit hoher Schlagfestigkeit aus Metallpulver und Verfahren zu seiner Herstellung
DE3239718C2 (da)
DE69213322T2 (de) Vorlegierte vanadiumreiche Kaltarbeitswerkzeugstahlteilchen und Verfahren zu deren Herstellung
EP2374560A1 (de) Verschleißbeständiger Werkstoff
DE3043503A1 (de) Kristalline metallegierung
DE3043290A1 (de) Stahllegierung mit einem gehalt an bor
DE1909781A1 (de) Metallpulver aus gekneteten Verbundteilchen und Verfahren zu deren Herstellung
DE3011152A1 (de) Borhaltige legierungen, verfahren zu deren herstellung und deren verwendung
DE2365046A1 (de) Pulvermetallurgische verarbeitung von hochleistungslegierungen
DE3781117T2 (de) Gegenstaende aus einer abnutzungs- und korrosionsbestaendigen-legierung.
DE2542094A1 (de) Metallpulver, verfahren zur behandlung losen metallpulvers und verfahren zur herstellung eines verdichteten presslings
DE2326284A1 (de) Werkstueck aus einer verdichteten superlegierung auf ni-basis
DE1783134A1 (de) Verfahren zur Herstellung von Hartlegierungen
EP1249510B2 (de) Verfahren zur pulvermetallurgischen Herstellung von Gegenständen aus Werkzeugstahl
EP3994289B1 (de) Nickel-basislegierung für pulver und verfahren zur herstellung eines pulvers
DE2200670B2 (da)
DE19711642C2 (de) Verfahren zur Herstellung eines Stahl-Matrix-Verbundwerkstoffes sowie Verbundwerkstoff, hergestellt nach einem derartigen Verfahren
WO2021032893A1 (de) Werkzeugstahl für kaltarbeits- und schnellarbeitsanwendungen
EP3988229A1 (de) Pulver für die verwendung in einem pulvermetallurgischen oder additiven verfahren, stahlwerkstoff und verfahren zur herstellung eines bauteils
DE69737265T2 (de) Herstellung nickelenthaltenden, gesinterten, verfestigten, feritischen rostfreien stahls
EP3326739A1 (de) Eisen-kohlenstoff-legierung sowie verfahren zur herstellung und verwendung der legierung
DE2846889C2 (de) Legierungspulver, Verfahren zu seiner Herstellung und seine Verwendung zur Herstellung von gesinterten Formteilen
EP0149210B1 (de) Verfahren zum Herstellen hochfester, duktiler Körper aus Kohlenstoffreichen Eisenbasislegierungen
EP1647606B1 (de) Hochharte Nickelbasislegierung für verschleissfeste Hochtemperaturwerkzeuge
EP0256449B1 (de) Pulvermetallurgische Herstellung eines Werkstücks aus einer warmfesten Aluminiumlegierung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

RIC1 Information provided on ipc code assigned before grant

Ipc: 7C 22C 33/02 A

Ipc: 7B 22F 3/15 B

AKX Designation fees paid
17P Request for examination filed

Effective date: 20040403

RAX Requested extension states of the european patent have changed

Extension state: SI

Payment date: 20040403

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

R17P Request for examination filed (corrected)

Effective date: 20040403

17Q First examination report despatched

Effective date: 20070503

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: SI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50113936

Country of ref document: DE

Date of ref document: 20080619

Kind code of ref document: P

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: HANS RUDOLF GACHNANG PATENTANWALT

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20080801

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20080401952

Country of ref document: GR

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2305049

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080507

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: ERASTEEL KLOSTER AKTIEBOLAG

Effective date: 20090203

NLR1 Nl: opposition has been filed with the epo

Opponent name: ERASTEEL KLOSTER AKTIEBOLAG

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080525

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080507

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: GACHNANG AG PATENTANWAELTE, CH

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20141029

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: SI

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 50113936

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AELC

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 50113936

Country of ref document: DE

Effective date: 20141029

REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Ref document number: 2305049

Country of ref document: ES

Kind code of ref document: T5

Effective date: 20141222

REG Reference to a national code

Ref country code: SE

Ref legal event code: RPEO

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T4

Effective date: 20150130

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20150400184

Country of ref document: GR

Effective date: 20150220

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200525

Year of fee payment: 20

Ref country code: NL

Payment date: 20200526

Year of fee payment: 20

Ref country code: DK

Payment date: 20200528

Year of fee payment: 20

Ref country code: PT

Payment date: 20200507

Year of fee payment: 20

Ref country code: GR

Payment date: 20200528

Year of fee payment: 20

Ref country code: ES

Payment date: 20200601

Year of fee payment: 20

Ref country code: FI

Payment date: 20200528

Year of fee payment: 20

Ref country code: DE

Payment date: 20200528

Year of fee payment: 20

Ref country code: CH

Payment date: 20200603

Year of fee payment: 20

Ref country code: TR

Payment date: 20200507

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20200527

Year of fee payment: 20

Ref country code: BE

Payment date: 20200527

Year of fee payment: 20

Ref country code: SE

Payment date: 20200601

Year of fee payment: 20

Ref country code: IT

Payment date: 20200522

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20200505

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50113936

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20210524

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

Expiry date: 20210525

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FI

Ref legal event code: MAE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20210524

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20210525

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK07

Ref document number: 394515

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20210603

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20210524

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20211230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20210526

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210525