DE3643257A1 - Work roll of composite casting for a rolling mill - Google Patents

Work roll of composite casting for a rolling mill

Info

Publication number
DE3643257A1
DE3643257A1 DE19863643257 DE3643257A DE3643257A1 DE 3643257 A1 DE3643257 A1 DE 3643257A1 DE 19863643257 DE19863643257 DE 19863643257 DE 3643257 A DE3643257 A DE 3643257A DE 3643257 A1 DE3643257 A1 DE 3643257A1
Authority
DE
Germany
Prior art keywords
work roll
iron alloy
weight
shell
rolling mill
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
DE19863643257
Other languages
German (de)
Other versions
DE3643257C2 (en
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
GONTERMANN PEIPERS GmbH
Original Assignee
GONTERMANN PEIPERS 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
Application filed by GONTERMANN PEIPERS GmbH filed Critical GONTERMANN PEIPERS GmbH
Priority to DE19863643257 priority Critical patent/DE3643257A1/en
Publication of DE3643257A1 publication Critical patent/DE3643257A1/en
Application granted granted Critical
Publication of DE3643257C2 publication Critical patent/DE3643257C2/de
Granted 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/011—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of iron alloys or steels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

The invention relates to a work roll of composite casting for a rolling mill, the core of the roll consisting of an iron alloy and the shell thereof having an iron alloy with the following constituents in % by weight: C = 3-3.5, Si = 0.5-1.2, Mn = 0.5-1.5, P less than 0.7, S less than 0.5, Cr = 1.0-2.0, Ni = 2-5 and Mo = 0.2-1. In order to improve a work roll of the abovementioned type with respect to its wear resistance, it is proposed according to the invention that the Cr content of the iron alloy of the shell is increased to 4-7% by weight and that of Mo is increased to 1-5% by weight. The basic analysis is otherwise unchanged, with the same core material. Surface hardnesses of between 60 and 100 ShC are achievable.

Description

Die Erfindung betrifft eine Arbeitswalze aus Verbundguß für ein Walzwerk, deren Kern aus einer Eisenlegierung besteht und deren Hülle eine Eisenlegierung mit folgenden Bestandteilen in Gew.-% aufweist:The invention relates to a work roll made of composite casting for a rolling mill, the core of which is made of an iron alloy consists and the shell of an iron alloy with has the following components in% by weight:

C= 3-3,5 Si= 0,5-1,2 Mn= 0,5-1,5 P= kleiner als 0,7 S= kleiner als 0,5 Cr= 1,0-2,0 Ni= 2-5 Mo= 0,2-1C = 3-3.5 Si = 0.5-1.2 Mn = 0.5-1.5 P = less than 0.7 S = less than 0.5 Cr = 1.0-2.0 Ni = 2-5 Mo = 0.2-1

Derartige Arbeitswalzen, auch als Indefinite-Verbundgußwalzen (ICDP) bezeichnet, finden in Warmstraßen sowie in Kaltstraßen Verwendung. Die bekannten Walzen sind im Verbund mit einem Kern aus GG oder GGG hergestellt und sind wärmebehandelt.Work rolls of this type, also as indefinite composite cast rolls (ICDP), can be found in warm streets as well as in Cold street use. The known rollers are in Composite with a core made of GG or GGG and are heat treated.

Diese bekannten Arbeitswalzen haben sich an sich bewährt, jedoch reicht in vielen Anwendungsfällen die Verschleißfestigkeit der Hülle dieser Arbeitswalzen nicht aus.These well-known work rolls have proven themselves however, wear resistance is sufficient in many applications  the shell of these work rolls.

Um eine Arbeitswalze der eingangs genannten Art hinsichtlich ihrer Verschleißfestigkeit zu verbessern wird erfindungsgemäß vorgeschlagen, daß die Anteile der Eisenlegierung der Hülle an Cr auf 4-7 Gew.-% und an Mo auf 1-5 Gew.-% erhöht werden. Die Grundanalyse ist ansonsten unverändert bei gleichem Kernwerkstoff. Es sind Oberflächenhärten zwischen 60 und 100 ShC erreichbar.To a work roll of the type mentioned in terms To improve their wear resistance is inventively suggested that the proportions of iron alloy the shell on Cr to 4-7% by weight and on Mo to 1-5 % By weight can be increased. The basic analysis is otherwise unchanged with the same core material. There are surface hardnesses reachable between 60 and 100 ShC.

Die Arbeitswalze kann folgende Zusammensetzungen in Gew.-% aufweisen:The work roll can have the following compositions in% by weight exhibit:

Beispiel 1 example 1

Beispiel 2 Example 2

Die erfindungsgemäße Arbeitswalze eignet sich besonders zum Einsatz in Warmbandstraßen in allen Gerüsten, in Großblechstraßen, in Steckelgerüsten sowie in Kaltstraßen.The work roll according to the invention is particularly suitable for use in hot strip mills in all scaffolding, in Large sheet metal lines, in Steckel scaffolding as well as in cold lines.

Claims (5)

1. Arbeitswalze aus Verbundguß für ein Walzwerk, deren Kern aus einer Eisenlegierung besteht und deren Hülle eine Eisenlegierung mit folgenden Bestandteilen in Gew.-% aufweist: C= 3-3,5 Si= 0,5-1,2 Mn= 0,5-1,5 P= kleiner als 0,7 S= kleiner als 0,5 Cr= 1,0-2,0 Ni= 2-5 Mo= 0,2-1dadurch gekennzeichnet, daß die Anteile der Eisenlegierung der Hülle an Cr auf 4-7 Gew.-% und an Mo auf 1-5 Gew.-% erhöht sind.1. Compound cast work roll for a rolling mill, the core of which is made of an iron alloy and the shell of which is made of an iron alloy with the following components in% by weight: C = 3-3.5 Si = 0.5-1.2 Mn = 0, 5-1.5 P = less than 0.7 S = less than 0.5 Cr = 1.0-2.0 Ni = 2-5 Mo = 0.2-1 characterized in that the proportions of the iron alloy of the shell Cr to 4-7 wt .-% and Mo to 1-5 wt .-% are increased. 2. Arbeitswalze nach Anspruch 1, dadurch gekennzeichnet, daß die Eisenlegierung der Hülle folgende Bestandteile in Gew.-% aufweist: C3,19 Si2,43 Mn0,91 P0,038 S0,016 Cr4,98 Mo2,03 Ni4,282. work roll according to claim 1, characterized in that the iron alloy of the shell contains the following components % By weight: C3.19 Si2.43 Mn 0.91 P0.038 S0.016 Cr4.98 Mo2.03 Ni4.28 3. Arbeitswalze nach Anspruch 1, dadurch gekennzeichnet, daß die Eisenlegierung der Hülle folgende Bestandteile in Gew.-% aufweist: C3,31 Si2,28 Mn0,93 P0,037 S0,011 Cr4,73 Mo1,92 Ni4,213. work roll according to claim 1, characterized in that the iron alloy of the shell following components in% by weight: C3.31 Si2.28 Mn 0.93 P0.037 S0.011 Cr4.73 Mo 1.92  Ni4.21 4. Arbeitswalze nach Anspruch 1 oder einem der vorhergehenden, dadurch gekennzeichnet, daß die Eisenlegierung des Kerns folgende Bestandteile in Gew.-% aufweist: C2,79 Si2,28 Mn0,54 P0,010 S0,0114. work roll according to claim 1 or one of the preceding, characterized in that the iron alloy of the core has the following components in% by weight: C2.79 Si2.28 Mn0.54 P0.010 S0.011 5. Arbeitswalze nach Anspruch 1 oder einem der vorhergehenden, dadurch gekennzeichnet, daß die Eisenlegierung des Kerns folgende Bestandteile in Gew.-% aufweist: C3,13 Si2,0 Mn0,48 P0,035 S0,0115. work roll according to claim 1 or one of the preceding, characterized in that the iron alloy of the core has the following components in% by weight: C3.13 Si2.0 Mn 0.48 P0.035 S0.011
DE19863643257 1986-12-18 1986-12-18 Work roll of composite casting for a rolling mill Granted DE3643257A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863643257 DE3643257A1 (en) 1986-12-18 1986-12-18 Work roll of composite casting for a rolling mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863643257 DE3643257A1 (en) 1986-12-18 1986-12-18 Work roll of composite casting for a rolling mill

Publications (2)

Publication Number Publication Date
DE3643257A1 true DE3643257A1 (en) 1988-07-07
DE3643257C2 DE3643257C2 (en) 1990-05-31

Family

ID=6316479

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863643257 Granted DE3643257A1 (en) 1986-12-18 1986-12-18 Work roll of composite casting for a rolling mill

Country Status (1)

Country Link
DE (1) DE3643257A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0464780A1 (en) * 1990-07-04 1992-01-08 Kubota Corporation Abrasion-resistant cast iron material for rolling rolls and composite rolls
US5081760A (en) * 1989-06-26 1992-01-21 Hitachi, Ltd. Work roll for metal rolling

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116227A1 (en) * 1981-04-23 1982-11-18 Kubota Ltd., Osaka Work roll of high chromium content and process for producing it
DE3244328A1 (en) * 1981-12-01 1983-07-14 Kubota Ltd., Osaka COMPOSITE COVER FOR ROLLING FOR HOT ROLLING OF H-PROFILE STEEL AND U-PROFILE STEEL

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116227A1 (en) * 1981-04-23 1982-11-18 Kubota Ltd., Osaka Work roll of high chromium content and process for producing it
DE3244328A1 (en) * 1981-12-01 1983-07-14 Kubota Ltd., Osaka COMPOSITE COVER FOR ROLLING FOR HOT ROLLING OF H-PROFILE STEEL AND U-PROFILE STEEL

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DE-FB: Roll, F. Handbuch der Gießereitechnik Erster Band, 2. Teil, Springer-Verlag, Berlin, Göttingen, Heidelberg, 1960, S. 321-328 *
RAPATZ, F., Kleines Lexikon Eisenwerkstoffe, Deutsche Verlagsanstalt, 1964 *
Stahlschlüssel-Taschenbuch, Stahlschlüssel-Verlag,1971, S. 8, 9 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5081760A (en) * 1989-06-26 1992-01-21 Hitachi, Ltd. Work roll for metal rolling
EP0464780A1 (en) * 1990-07-04 1992-01-08 Kubota Corporation Abrasion-resistant cast iron material for rolling rolls and composite rolls

Also Published As

Publication number Publication date
DE3643257C2 (en) 1990-05-31

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee