EP0264528B1 - Aciers rapides non lédéburitiques - Google Patents

Aciers rapides non lédéburitiques Download PDF

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Publication number
EP0264528B1
EP0264528B1 EP87105124A EP87105124A EP0264528B1 EP 0264528 B1 EP0264528 B1 EP 0264528B1 EP 87105124 A EP87105124 A EP 87105124A EP 87105124 A EP87105124 A EP 87105124A EP 0264528 B1 EP0264528 B1 EP 0264528B1
Authority
EP
European Patent Office
Prior art keywords
tungsten
molybdenum
ledeburitic
carbon
niobium
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
EP87105124A
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German (de)
English (en)
Other versions
EP0264528A1 (fr
Inventor
Henryk Christoph
Jan Cwajna
Franciszek Grosman
Marek Hetmanczyk
Jerzy Lejawka
Marian Malinski
Adolf Maciejny
Janusz Szala
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.)
Huta Baildon Przedsiebiorstwo Panstwowe
Politechnika Slaska im Wincentego Pstrowskiego
Original Assignee
Huta Baildon Przedsiebiorstwo Panstwowe
Politechnika Slaska im Wincentego Pstrowskiego
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 Huta Baildon Przedsiebiorstwo Panstwowe, Politechnika Slaska im Wincentego Pstrowskiego filed Critical Huta Baildon Przedsiebiorstwo Panstwowe
Priority to AT87105124T priority Critical patent/ATE60810T1/de
Publication of EP0264528A1 publication Critical patent/EP0264528A1/fr
Application granted granted Critical
Publication of EP0264528B1 publication Critical patent/EP0264528B1/fr
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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
    • C22C38/36—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
    • 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
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Definitions

  • This invention relates to non-ledeburitic, economical, high-speed steels containing tungsten and/or molybdenum, chromium, vanadium and titanium and/or niobium as carbide­forming elements.
  • high-speed steels comprising 0.8-1.15 wt.% C, 3.8-4.2 wt.% Cr, 0.6-1.2 wt.% V, 4.5­5.5 wt.% Mo, 0.2-0.4 wt.% Si, 0.2-0.4 wt.% Mn, 4.5­10.5 wt.% Co, 0.6-1.2 wt.% Ti and the balance being iron are known which show improved hardness and heat resistance.
  • EP-0 105 861 Al high-speed steels which include 0.84-1.05 wt.% C, up to 1.0 wt.% Si, up to 1.0 wt.% Mn, 3.6-4.5 wt.% Cr, 4.6-6.5 wt.% Mo, 2.0­4.0 wt.% W, 0.5-1.6 wt.% V, 0.5-1.5 wt.% Nb, the balance being iron and unavoidable impurities.
  • a steel containing by weight 1.2 to 2.3% carbon, 6.0 to 7.0% tungsten, 4.0 to 7.0% chromium, 1.0 to 1.3% vanadium, up to 1.5% manganese, 0.2 to 0.5% zirconium, 0.4 to 1.5% silicon, up to 0.4% nickel, up to 0.03% sulphur, up to 0.03% phosphorus, totally 1.5 to 6.0% titanium and/or niobium, the balance being iron and unavoidable impurities.
  • the 6.0 to 7.0% tungsten in the above steel is replaced by 5.0 to 6.0% molybdenum.
  • the invention comprises a steel of the above first-indicated art, wherein the 6.0 to 7.0% tungsten is substituted by 1.0 to 6.0% tungsten and molybdenum.
  • the above steels have a proper carbon content of the following inequality: 0.5 + 0.2 [% Ti + % Nb + % Zr + (% V _ 1)] ⁇ % C ⁇ 0.65 + 0.26 [% Ti + % Nb + % Zr + % V _ 1)]
  • the inventive steels are used for the manufacture of tools.
  • Steels according to the invention contained in the casting form no carbon eutectics. Moreover, these steels do not exhibit, after having been both cast or plastic worked, any macrosegregation or microsegregation of carbides. After final heat treatment, the structure of these steels exhibits a uniform distribution of primary carbides of titanium, niobium and zirconium, as well as secondary car­bides containing mainly tungsten, molybdenum and vanadium in tempered martensite matrix and a small amount of re­tained austenite.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Coating With Molten Metal (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)
  • Vending Machines For Individual Products (AREA)

Claims (5)

1. Acier rapide au tungstène non lédéburitique constitué en poids de 1,2 à 2,3% de carbone, 4,0 à 7,0% de chrome, 6,0 à 7,0% de tungstène, 1,0 à 1,3% de vanadium, jusqu'à 1,5% de manganèse, 0,2 à 0,5% de zirconium, 0,4 à 1,5% de silicium, jusqu'à 0,4% de nickel, jusqu'à 0,03% de souffre, jusqu'à 0,03% de phosphore, au total 1,5 à 6,0% de titane et/ou de niobium, le complément étant du fer et des impuretés inévitables.
2. Acier rapide au molybdène non lédéburitique constitué en poids de 1,2 à 2,3% de carbone, 4,0 à 7,0% de chrome, 5,0 à 6,0% de molybdène, 1,0 à 1,3% de vanadium, jusqu'à 1,5% de manganèse, 0,2 à 0,5% de zirconium, 0,4 à 1,5% de silicium, jusqu'à 0,4% de nickel, jusqu'à 0,03% de souffre, jusqu'à 0,03% de phosphore, au total 1,5 à 6,0% de titane et/ou de niobium, le complément étant du fer et des impuretés inévitables.
3. Acier rapide au tungstène-molybdène non lédéburitique constitué en poids de 1,2 à 2,3% de carbone, 4,0 à 7,0% de chrome, 1,0 à 6,0% de tungstène et de molybdène, 1,0 à 1,3% de vanadium, jusqu'à 1,5% de manganèse, 0,2 à 0,5% de zirconium, 0,4 à 1,5% de silicium, jusqu'à 0,4% de nickel, jusqu'à 0,03% de souffre, jusqu'à 0,03% de phosphore, au total de 1,5 à 6,0% de titane et/ou de niobium, le complément étant du fer et des impuretés inévitables.
4. Acier rapide non lédéburitique selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il a une teneur de carbone propre en conformité avec l'inégalité suivante :
0.5 + 0.2 [% Ti + % Nb + % Zr + (% V _ 1)] < % C < 0.65 + 0.26 [% Ti + % Nb + % Zr + % V _ 1)]
Figure imgb0005
5. L'utilisation de l'acier en conformité avec les revendications 1 à 4 pour la fabrication d'outils.
EP87105124A 1986-09-15 1987-04-07 Aciers rapides non lédéburitiques Expired - Lifetime EP0264528B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87105124T ATE60810T1 (de) 1986-09-15 1987-04-07 Nicht-ledeburitische schnellschnittstaehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL1986261399A PL261399A3 (en) 1986-09-15 1986-09-15 Economic nonledeburitic high-speed steels
PL261399 1986-09-15

Publications (2)

Publication Number Publication Date
EP0264528A1 EP0264528A1 (fr) 1988-04-27
EP0264528B1 true EP0264528B1 (fr) 1991-02-06

Family

ID=20032651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87105124A Expired - Lifetime EP0264528B1 (fr) 1986-09-15 1987-04-07 Aciers rapides non lédéburitiques

Country Status (4)

Country Link
EP (1) EP0264528B1 (fr)
AT (1) ATE60810T1 (fr)
DE (1) DE3767961D1 (fr)
PL (1) PL261399A3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT392805B (de) * 1988-02-15 1991-06-25 Boehler Gmbh Schnellstahllegierung, verfahren zu ihrer herstellung und verwendung derselben
US5674449A (en) * 1995-05-25 1997-10-07 Winsert, Inc. Iron base alloys for internal combustion engine valve seat inserts, and the like
US6200528B1 (en) 1997-09-17 2001-03-13 Latrobe Steel Company Cobalt free high speed steels
US7611590B2 (en) 2004-07-08 2009-11-03 Alloy Technology Solutions, Inc. Wear resistant alloy for valve seat insert used in internal combustion engines
US7754142B2 (en) 2007-04-13 2010-07-13 Winsert, Inc. Acid resistant austenitic alloy for valve seat inserts

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU823450A1 (ru) * 1979-07-31 1981-04-23 Краматорский Научно-Исследовательскийи Проектно-Технологический Институтмашиностроения Быстрорежуща сталь

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271409B (de) * 1961-12-28 1968-06-27 Fujikoshi Kozai Kogyo Kabushik Titan und Tantal enthaltender Schnellarbeitsstahl
US3367770A (en) * 1965-02-01 1968-02-06 Latrobe Steel Co Ferrous alloys and abrasion resistant articles thereof
US3692515A (en) * 1968-07-30 1972-09-19 Latrobe Steel Co Ferrous alloys and abrasion resistant articles thereof
JPS52111411A (en) * 1976-03-17 1977-09-19 Hitachi Metals Ltd High speed tool steel
AT390967B (de) * 1982-09-14 1990-07-25 Boehler Gmbh Schnellarbeitsstahllegierung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU823450A1 (ru) * 1979-07-31 1981-04-23 Краматорский Научно-Исследовательскийи Проектно-Технологический Институтмашиностроения Быстрорежуща сталь

Also Published As

Publication number Publication date
ATE60810T1 (de) 1991-02-15
PL261399A3 (en) 1988-08-18
DE3767961D1 (de) 1991-03-14
EP0264528A1 (fr) 1988-04-27

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