EP0178022B1 - Zylinderrolle aus zwei Metallen für Vor- oder Fertigwalzgerüste in einer Warmbandstrasse - Google Patents

Zylinderrolle aus zwei Metallen für Vor- oder Fertigwalzgerüste in einer Warmbandstrasse Download PDF

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Publication number
EP0178022B1
EP0178022B1 EP85201613A EP85201613A EP0178022B1 EP 0178022 B1 EP0178022 B1 EP 0178022B1 EP 85201613 A EP85201613 A EP 85201613A EP 85201613 A EP85201613 A EP 85201613A EP 0178022 B1 EP0178022 B1 EP 0178022B1
Authority
EP
European Patent Office
Prior art keywords
carbides
metals
hot strip
type
roll made
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
EP85201613A
Other languages
English (en)
French (fr)
Other versions
EP0178022A1 (de
Inventor
Jean-Pierre Breyer
Jacques Purnode
Jacques Evrard
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.)
Sa Des Fonderies J Marichal Ketin & Cie
Original Assignee
Sa Des Fonderies J Marichal Ketin & Cie
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 Sa Des Fonderies J Marichal Ketin & Cie filed Critical Sa Des Fonderies J Marichal Ketin & Cie
Priority to AT85201613T priority Critical patent/ATE71861T1/de
Publication of EP0178022A1 publication Critical patent/EP0178022A1/de
Application granted granted Critical
Publication of EP0178022B1 publication Critical patent/EP0178022B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • 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

Definitions

  • the present invention relates to rolls of two-metal alloy rolling mills intended to equip roughing or finishing cages of a hot strip train.
  • the object of the invention is to avoid this creep phenomenon, and consequently, to obtain surface aspects that are clearly improved compared to the existing qualities.
  • a rolling cylinder with two metals, resistant to creep on the surface, for roughing or finishing cage of a hot strip train consisting in its external working zone of a high cast alloy -chrome with carbon contents between 0.9% and 1.9% and chromium contents between 8% and 16%, said external working area containing secondary carbides, characterized in that it has in said external zone of molybdenum contents located between 2% and 5% and in that said external zone also contains fine and discontinuous carbides of the M7C3 type forming a network as well as carbides of the Mo2C type.
  • the other alloying elements and the types of heat treatment of a rolling mill cylinder produced according to the invention are chosen according to a desired final hardness and structure.
  • the percentages of the elements Cr, C and Mo allow in all cases to obtain an ideal compromise for all applications, whether for roughing cages or finishing cages in the different rolling mills. We can both limit the phenomena of banding and avoid the problem of skating.
  • Molybdenum improves mechanical properties. These, with these analyzes, are higher than those recorded by the qualities previously used. This eliminates the phenomena of surface creep.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)

Claims (1)

  1. Walze für Walzwerksanlage aus zwei Metallen mit hoher Oberflächenkriechfestigkeit für das Vorgerüst oder das Endgerüst einer Warmblechwalzstraße, deren äußere Arbeitszone aus einer Gußlegierung mit hohem Chromgehalt mit einem Kohlenstoffgehalt, der zwischen 0,9 % und 1,9 % und mit einem Chormgehalt, der zwischen 8 % und 16 % liegt, besteht, und deren äußere Arbeitszone Sekundärkarbide enthält, dadurch gekennzeichnet, daß die Walze in der äußeren Zone Gehalte an Molybden, die zwischen 2 % und 5 % liegen, aufweist und daß die äußere Zone des weiteren feine und unterbrochene, ein Gitter bildende Karbide des Typs M₇C₃ sowie Karbide des Typs Mo₂C enthält.
EP85201613A 1984-10-08 1985-10-05 Zylinderrolle aus zwei Metallen für Vor- oder Fertigwalzgerüste in einer Warmbandstrasse Expired - Lifetime EP0178022B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85201613T ATE71861T1 (de) 1984-10-08 1985-10-05 Zylinderrolle aus zwei metallen fuer vor- oder fertigwalzgerueste in einer warmbandstrasse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU85579 1984-10-08
LU85579A LU85579A1 (fr) 1984-10-08 1984-10-08 Cylindre de laminoir a deux metaux pour cage degrossisseuse ou finisseuse d'un train a bades a chaud

Publications (2)

Publication Number Publication Date
EP0178022A1 EP0178022A1 (de) 1986-04-16
EP0178022B1 true EP0178022B1 (de) 1992-01-22

Family

ID=19730336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201613A Expired - Lifetime EP0178022B1 (de) 1984-10-08 1985-10-05 Zylinderrolle aus zwei Metallen für Vor- oder Fertigwalzgerüste in einer Warmbandstrasse

Country Status (4)

Country Link
EP (1) EP0178022B1 (de)
AT (1) ATE71861T1 (de)
DE (2) DE3585258D1 (de)
LU (1) LU85579A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601268B1 (fr) * 1986-07-11 1992-07-24 Chavanne Ketin Cylindre de travail composite en acier pour train a chaud.
AU624109B2 (en) * 1987-12-23 1992-06-04 Chavanne-Ketin Composite bi-metallic support roll for 4- or 6- high hot rolling mill finisher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864495A (en) * 1956-08-02 1961-04-06 Heinz Teves Steel alloy for valve members
FR1276495A (fr) * 1960-12-21 1961-11-17 Latrobe Steel Co Acier résistant à l'usure aux températures élevées
DE1228067B (de) * 1962-03-09 1966-11-03 Teves Thompson & Co G M B H Verwendung einer Stahllegierung als Werkstoff fuer Kolbenringe
US3342058A (en) * 1962-03-26 1967-09-19 Hitachi Ltd Roll for cold-rolling metallic sheet materials
US4150978A (en) * 1978-04-24 1979-04-24 Latrobe Steel Company High performance bearing steels
FR2469221A1 (fr) * 1979-11-13 1981-05-22 Usinor Cylindre de laminoir pour train a chaud

Also Published As

Publication number Publication date
DE3585258D1 (de) 1992-03-05
ATE71861T1 (de) 1992-02-15
LU85579A1 (fr) 1986-06-11
DE178022T1 (de) 1987-01-15
EP0178022A1 (de) 1986-04-16

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