EP0341643B1 - Acier formé à froid résistant à la corrosion et composite contenant une matrice de cet acier et un matériau dur - Google Patents

Acier formé à froid résistant à la corrosion et composite contenant une matrice de cet acier et un matériau dur Download PDF

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Publication number
EP0341643B1
EP0341643B1 EP89108269A EP89108269A EP0341643B1 EP 0341643 B1 EP0341643 B1 EP 0341643B1 EP 89108269 A EP89108269 A EP 89108269A EP 89108269 A EP89108269 A EP 89108269A EP 0341643 B1 EP0341643 B1 EP 0341643B1
Authority
EP
European Patent Office
Prior art keywords
percent
matrix
cold
corrosion
weight
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
EP89108269A
Other languages
German (de)
English (en)
Other versions
EP0341643A1 (fr
Inventor
Helmut Dipl.-Ing. Seilstorfer
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.)
Seilstorfer & Co Metallurgische Verfahrenstechnik KG GmbH
Original Assignee
Seilstorfer & Co Metallurgische Verfahrenstechnik KG GmbH
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Publication date
Application filed by Seilstorfer & Co Metallurgische Verfahrenstechnik KG GmbH filed Critical Seilstorfer & Co Metallurgische Verfahrenstechnik KG GmbH
Priority to AT89108269T priority Critical patent/ATE81874T1/de
Publication of EP0341643A1 publication Critical patent/EP0341643A1/fr
Application granted granted Critical
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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%
    • C22C33/0292—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% with more than 5% preformed carbides, nitrides or borides
    • 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%
    • C22C33/0285—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% with Cr, Co, or Ni having a minimum content higher than 5%

Definitions

  • the invention relates to a cold work steel formed by hot isostatic pressing of a prealloyed powder and to a steel matrix-hard material composite material containing such a cold work steel.
  • DE-PS 29 37 724 describes a cold work steel known as CPM 10 V with the following analysis (in percent by weight): 2.45 C. 0.50 mn 0.90 Si 5.25 cr 9.75 V. 1.30 mo 0.07 p Rest of Fe. For him, the carbide content is approx. 33% by volume with an MC content of approx. 16%.
  • the materials mentioned are characterized by good machinability, since the carbide distribution is in fine form.
  • the object of the invention is to provide a cold work steel which has both a high carbide content and is corrosion-resistant, as well as a steel matrix-hard material composite material containing such cold work steel, which is corrosion-resistant and in which the service hardness of the steel matrix is the hardness of the hard material is as close as possible.
  • the pre-alloyed powder which is preferably obtained by atomizing - most preferably spherical - has a grain size of less than 500 micrometers in pure cold work steel.
  • the grain size - spherical or speckled - in adaptation to a hard material powder with a grain size of 5-10 micrometers is preferably less than 50 micrometers.
  • CPM T 440 Another well-known stainless cold steel sold under the name CPM T 440 with the composition (in percent by weight) 2.20 C. 0.50 mn 0.50 Si 17.50 cr 5.75 V. 0.50 mo 0.06 p Rest of Fe can at best be described as inert because, due to the high carbon layer of 2.20%, most of the 17.50% chromium present is bound in the form of carbides, so that the matrix sinks below the resistance limit of 13% chromium.
  • this steel Due to the favorable ratio of service hardness to annealing hardness, i.e. low annealing hardness and high service hardness, in connection with its corrosion resistance, this steel also forms the matrix basis for an advantageous metal matrix-hard material composite material of the basic type, as described for example in DE-OS 35 07 332, because this composite material is itself easily machinable in the soft-annealed state and is resistant to abrasive wear in the hardened state of the matrix, since washing out of the matrix is largely avoided due to the proximity of the hardness of the matrix and hardness of the hard material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Claims (6)

  1. Acier pour travail à froid, résistant à la corrosion, formé par compression isostatique à chaud de poudre prémélangée composée de (en % en poids) 2,0 - 3,5 % de C 0 - 1,5 % de Si 0 - 1,5 % de Mn 23,0 - 27,0 % de Cr 0,5 - 2,5 % de Mo 3,0 - 6,0 % de V le reste étant constitué de Fe et d'impuretés inévitables.
  2. Acier pour travail à froid, résistant à la corrosion, ayant la composition suivante (en % en poids): 2,0 - 3,5 % de C 0 - 1,5 % de Si 0 - 1,5 % de Mn 24,0 - 26,0 % de Cr 0,5 - 2,5 % de Mo 3,0 - 6,0 % de V le reste étant constitué de Fe et d'impuretés inévitables.
  3. Acier pour travail à froid, résistant à la corrosion, ayant la composition suivante (en % en poids): 2,3 % de C ≦0,4 % de Si ≦0,4 % de Mn 25,0 % de Cr 1,0 % de Mo 4,1 % de V le reste étant constitué de Fe et d'impuretés inévitables.
  4. Matériau composite à base d'une matrice en acier et d'une matière dure, formé par compression isostatique à chaud d'un mélange de poudres constitué de 60 à 90 % en volume d'une poudre prémélangée de matrice en acier pour travail à froid, durcissable, de composition (en % en poids): 2,0 - 3,5 % de C 0 - 1,5 % de Si 0 - 1,5 % de Mn 23,0 - 27,0 % de Cr 0,5 - 2,5 % de Mo 3,0 - 6,0 % de V le reste étant constitué de Fe et d'impuretés inévitables,
    et de 40 à 10 % en volume d'une poudre d'une des matières dures TiC, Al₂O₃, B₄C, VC ou d'un mélange de deux de ces matières dures ou plus.
  5. Matériau composite à base d'une matrice en acier et d'une matière dure, selon la revendication 4, comportant une matrice en acier pour travail à froid de composition suivante (en % en poids): 2,0 - 3,5 % de C 0 - 1,5 % de Si 0 - 1,5 % de Mn 24,0 - 26,0 % de Cr 0,5 - 2,5 % de Mo 3,0 - 6,0 % de V le reste étant constitué de Fe et d'impuretés inévitables.
  6. Matériau composite à base d'une matrice en acier et d'une matière dure, selon la revendication 5, comportant une matrice en acier pour travail à froid de composition suivante (en % en poids): 2,3 % de C ≦0,4 % de Si ≦0,4 % de Mn 25,0 % de Cr 1,0 % de Mo 4,1 % de V le reste étant constitué de Fe et d'impuretés inévitables.
EP89108269A 1988-05-09 1989-05-09 Acier formé à froid résistant à la corrosion et composite contenant une matrice de cet acier et un matériau dur Expired - Lifetime EP0341643B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89108269T ATE81874T1 (de) 1988-05-09 1989-05-09 Korrosionsbestaendiger kaltarbeitsstahl und diesen kaltarbeitsstahl aufweisender stahlmatrix- hartstoff-verbundwerkstoff.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3815833 1988-05-09
DE3815833A DE3815833A1 (de) 1988-05-09 1988-05-09 Korrosionsbestaendiger kaltarbeitsstahl und diesen kaltarbeitsstahl aufweisender stahlmatrix-hartstoff-verbundwerkstoff

Publications (2)

Publication Number Publication Date
EP0341643A1 EP0341643A1 (fr) 1989-11-15
EP0341643B1 true EP0341643B1 (fr) 1992-10-28

Family

ID=6354000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89108269A Expired - Lifetime EP0341643B1 (fr) 1988-05-09 1989-05-09 Acier formé à froid résistant à la corrosion et composite contenant une matrice de cet acier et un matériau dur

Country Status (4)

Country Link
EP (1) EP0341643B1 (fr)
AT (1) ATE81874T1 (fr)
DE (2) DE3815833A1 (fr)
ES (1) ES2035421T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5290507A (en) * 1991-02-19 1994-03-01 Runkle Joseph C Method for making tool steel with high thermal fatigue resistance
DE4118067A1 (de) * 1991-06-01 1992-12-03 Krupp Widia Gmbh Metallbasiswerkstoff, formkoerper und verfahren zu seiner herstellung sowie verwendung
DE4235148C1 (de) * 1992-10-19 1994-04-07 Hans Prof Dr Ing Berns Verfahren zur Herstellung von PM-Hartlegierungen
US5679908A (en) * 1995-11-08 1997-10-21 Crucible Materials Corporation Corrosion resistant, high vanadium, powder metallurgy tool steel articles with improved metal to metal wear resistance and a method for producing the same
US5900560A (en) * 1995-11-08 1999-05-04 Crucible Materials Corporation Corrosion resistant, high vanadium, powder metallurgy tool steel articles with improved metal to metal wear resistance and method for producing the same
FR2744046B1 (fr) * 1996-01-30 1998-04-30 Framatome Sa Procede de fabrication d'un materiau metallique de grande durete et utilisations
SE0200429D0 (sv) * 2002-02-15 2002-02-15 Uddeholm Tooling Ab Stållegering och verktyg tillverkat av stållegeringen
DE102004034905A1 (de) 2004-07-19 2006-04-13 Böhler-Uddeholm Precision Strip GmbH & Co. KG Stahlband für Streichmesser, Auftragsmesser und Kreppschaber und pulvermetallurgisches Verfahren zu ihrer Herstellung
US7320832B2 (en) 2004-12-17 2008-01-22 Integran Technologies Inc. Fine-grained metallic coatings having the coefficient of thermal expansion matched to the one of the substrate
US7387578B2 (en) 2004-12-17 2008-06-17 Integran Technologies Inc. Strong, lightweight article containing a fine-grained metallic layer
US7354354B2 (en) 2004-12-17 2008-04-08 Integran Technologies Inc. Article comprising a fine-grained metallic material and a polymeric material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1259034B (de) * 1964-12-22 1968-01-18 Constructa Werke Ges Mit Besch Vorrichtung zum Erzeugen von Spruehstrahlen, insbesondere fuer eine Geschirrspuelmaschine
US4469514A (en) * 1965-02-26 1984-09-04 Crucible, Inc. Sintered high speed tool steel alloy composition
US4249945A (en) 1978-09-20 1981-02-10 Crucible Inc. Powder-metallurgy steel article with high vanadium-carbide content
FI830737L (fi) * 1983-03-04 1984-09-05 Telatek Oy Foerfarande foer aostadkommande av en belaeggning, som motstaor bra kemisk och mekanisk slitning och en traod foer anvaendning vid foerfarandet.
SE450469B (sv) * 1985-02-19 1987-06-29 Asea Stal Ab Sett vid framstellning av en formkropp av en jernlegering med hog kromhalt
DE3507332A1 (de) * 1985-03-01 1986-09-04 Seilstorfer GmbH & Co Metallurgische Verfahrenstechnik KG, 8092 Haag Stahlmatrix-hartstoff-verbundwerkstoff
US4765836A (en) * 1986-12-11 1988-08-23 Crucible Materials Corporation Wear and corrosion resistant articles made from pm alloyed irons

Also Published As

Publication number Publication date
DE58902537D1 (de) 1992-12-03
EP0341643A1 (fr) 1989-11-15
ES2035421T3 (es) 1993-04-16
DE3815833A1 (de) 1989-11-23
ATE81874T1 (de) 1992-11-15

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