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USRE35052E - Method for hot rolling metal strip with composite metal rolls - Google Patents

Method for hot rolling metal strip with composite metal rolls Download PDF

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Publication number
USRE35052E
USRE35052E US08/021,035 US2103593A USRE35052E US RE35052 E USRE35052 E US RE35052E US 2103593 A US2103593 A US 2103593A US RE35052 E USRE35052 E US RE35052E
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US
United States
Prior art keywords
rolls
content
carbon
chromium
strip
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
US08/021,035
Inventor
Jean-Claude Werquin
Bernard Mercier
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.)
Forcast International
Original Assignee
Forcast International
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Filing date
Publication date
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Application filed by Forcast International filed Critical Forcast International
Priority to US08/021,035 priority Critical patent/USRE35052E/en
Assigned to FORCAST INTERNATIONAL reassignment FORCAST INTERNATIONAL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KETIN, CHAVANNE
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Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12958—Next to Fe-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12958—Next to Fe-base component
    • Y10T428/12965—Both containing 0.01-1.7% carbon [i.e., steel]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
    • Y10T428/12979—Containing more than 10% nonferrous elements [e.g., high alloy, stainless]

Definitions

  • the present invention relates to rolling mill rolls for in particular roughing stands and the first finishing stands of a hot strip train or mill.
  • banding which consists in a phenomenon of the embedding in the surface of the rolls of hard scale or oxides which come from the rolled strip and are formed on this surface at the high rolling temperatures. These oxides are torn away from the surface of the roll, sometimes carrying along therewith certain parts of the metal, and are thereafter rolled in the following stands with the strip and result in a deterioration of the quality of this strip owing to the occurrence of surface defects termed "gravel”.
  • a first solution consists in making the rolls from chrome iron, it being possible to employ chromium contents of from 12 to 20% whereas the carbon content is of the order of 2.5%.
  • This first solution resulted in a certain improvement in particular as concerns the hardness of the roll.
  • this improvement was found to be insufficient since with such chrome irons carbides are formed in the material of the roll which break and result in cracks which facilitate the encrusting of the oxides or scale.
  • the problem that the invention is intended to solve is consequently to provide rolling mill rolls which are intended to equip mainly roughing stands for the first finishing stands of a hot strip train or mill, it being required that these rolls have an increased duration of utilization and be less susceptible to the encrusting phenomenon, notwithstanding the fact that these rolls operate under particularly difficult conditions.
  • the prescribed solution is based on an original approach which consists in associating more closely than in the past the carbon and chromium contents and in finding between these two elements an optimum ratio for the contemplated application.
  • the invention provides a rolling mill roll whose surface is made from chrome steel and in which the ratio between the respective contents of chromium and carbon is between 7 and 12 and in which the content of equivalent carbon is between 1.5 and 1.7%, this content of equivalent carbon being calculated as the sum of the carbon content and the chromium content, the latter being given a coefficient of 0.05 said chrome steel excluding boron and tungsten apart from any traces of boron and tungsten as impurities.
  • the carbon content remains limited, which permits the avoidance of the formation of intergranular carbides of the type M 7 C 3 which no heat treatment can put in solution.
  • the chromium content is sufficient to obtain a matrix which is rich in chromium but however remains within such limits that the chromium oxide can form to a certain extent and constitute a protective lubricating layer which constitutes a positive element. It is therefore essential to conform to the aforementioned ratios and magnitudes.
  • a roll having such a composition has a much better structure than a chrome iron or a steel of the adamite type, in particular as concerns the secondary carbides which are extremely fine and dispersed.
  • a roll according to the invention may be made by a composite casting method and preferably by a centrifugal casting method, this type of method having the desired effect as concerns the refining and distribution of the carbides.
  • a roll may have the following composition:
  • the ratio Cr/C is in the neighbourhood of 12 and the content of equivalent carbon equals 1.535.
  • composition is of course that of the working surface or outer region of the roll whose heart or core may be made for example from nodular iron. .Iadd.As is apparent from the foregoing, the roll is preferably bimetallic, lacking any partition wall. .Iaddend.After centrifugal casting, the roll is subjected to a suitable heat treatment comprising, for example, a simple quenching in air from a temperature of 1,000° C., if desired with a stage or step in the course of the cooling; these treatments are conventional and are consequently not described in more detail.
  • Such a roll has a hardness higher than 70 shore C.
  • Tests were carried out, in particular by using such a roll with a chrome iron roll of conventional design and composition C: 2.9--Si: 0.6--Mn: 0.91--Cr: 18.9--Ni: 0.92--Mo: 1.45. These two rolls were mounted together, while regularly reversing their positions, in the F3 stand of a hot continuous train or mill. It was found that, after an equivalent period of operation, the roll according to the invention had no geometrical wear and no trace of encrusting with oxide or scale, whereas the conventional roll already has a marked commencement of banding.
  • the object of the invention is therefore attained and a roll having in its working region the claimed composition has in the particularly difficult conditions of utilization encountered in roughing stands and in the first finishing stands of a hot train or mill, a behaviour and performance which are very substantially improved relative to known rolls, so that the overall output of the train or mill can be increased in the same proportions.

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  • 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)
  • Rolls And Other Rotary Bodies (AREA)
  • Metal Rolling (AREA)
  • Laminated Bodies (AREA)
  • Massaging Devices (AREA)
  • Braking Arrangements (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The object of the invention is to improve the performance of the rolls of roughing and finishing stands of a hot strip train or mill and in particular to retard as far as possible the banding phenomenon, namely the phenomenon of the incrusting of hard oxides or scale formed at the convenience rolling temperatures.
For this purpose, the roll is made, at least in the working region thereof, from a chrome steel in which the ratio between the respective contents of chromium and carbon is between 7 and 12 and in which the content of equivalent carbon is between 1.5 and 1.7%. This content of equivalent carbon is calculated as the sum of the content of carbon and the content of chromium, the latter being given a coefficient 0.05.

Description

This is a continuation of application Ser. No. 206,177, filed Nov. 12, 1980, now abandoned.
The present invention relates to rolling mill rolls for in particular roughing stands and the first finishing stands of a hot strip train or mill.
As concerns the rolls of these hot train stands, there is encountered a problem termed "banding" which consists in a phenomenon of the embedding in the surface of the rolls of hard scale or oxides which come from the rolled strip and are formed on this surface at the high rolling temperatures. These oxides are torn away from the surface of the roll, sometimes carrying along therewith certain parts of the metal, and are thereafter rolled in the following stands with the strip and result in a deterioration of the quality of this strip owing to the occurrence of surface defects termed "gravel". This is a serious problem since it leads either to a lowering of the rolling temperatures so as to limit the oxidation, which is not desirable, or the frequent replacement of the rolls which reduces the overall output of the rolling mill train.
In an effort to retard this phenomenon, a first solution consists in making the rolls from chrome iron, it being possible to employ chromium contents of from 12 to 20% whereas the carbon content is of the order of 2.5%. This first solution resulted in a certain improvement in particular as concerns the hardness of the roll. However, this improvement was found to be insufficient since with such chrome irons carbides are formed in the material of the roll which break and result in cracks which facilitate the encrusting of the oxides or scale.
In a second solution in an effort to solve this problem, it was attempted to employ steels containing between 1.3 to 1.9% of carbon and roughly between 1 to 1.5% of chromium, with a certain number of alloy elements moreover for improving the hardness. However, here again, this solution was not found to be absolutely satisfactory since the oxide which is formed on the surface of the roll is fragile and easily scales off and this increases the risk of adhesion between the roll and the strip and facilitates the encrusting phenomenon since, in scaling off, the oxide tears away a part of the metal. In an effort to overcome this drawback, an intense lubrication must be provided and this complicates the installation and increases the cost. Moreover, such rolls have a hardness which is insufficient to oppose the banding or encrusting phenomenon.
The problem that the invention is intended to solve is consequently to provide rolling mill rolls which are intended to equip mainly roughing stands for the first finishing stands of a hot strip train or mill, it being required that these rolls have an increased duration of utilization and be less susceptible to the encrusting phenomenon, notwithstanding the fact that these rolls operate under particularly difficult conditions.
The prescribed solution is based on an original approach which consists in associating more closely than in the past the carbon and chromium contents and in finding between these two elements an optimum ratio for the contemplated application. For this purpose, the invention provides a rolling mill roll whose surface is made from chrome steel and in which the ratio between the respective contents of chromium and carbon is between 7 and 12 and in which the content of equivalent carbon is between 1.5 and 1.7%, this content of equivalent carbon being calculated as the sum of the carbon content and the chromium content, the latter being given a coefficient of 0.05 said chrome steel excluding boron and tungsten apart from any traces of boron and tungsten as impurities.
These conditions result in carbon contents of between 0.9 and 1.3% and in chromium contents of between 6 and 15%, the other alloy elements, such as manganese, silicon, nickel, molybdenum, etc . . . , being chosen in accordance with the desired hardness.
In contrast to the situation with high chrome irons, the carbon content remains limited, which permits the avoidance of the formation of intergranular carbides of the type M7 C3 which no heat treatment can put in solution. The chromium content is sufficient to obtain a matrix which is rich in chromium but however remains within such limits that the chromium oxide can form to a certain extent and constitute a protective lubricating layer which constitutes a positive element. It is therefore essential to conform to the aforementioned ratios and magnitudes.
It was found that a roll having such a composition has a much better structure than a chrome iron or a steel of the adamite type, in particular as concerns the secondary carbides which are extremely fine and dispersed.
A roll according to the invention may be made by a composite casting method and preferably by a centrifugal casting method, this type of method having the desired effect as concerns the refining and distribution of the carbides. By way of example, such a roll may have the following composition:
C: 0.96
Mn: 0.58
Si: 1.4
Ni: 0.62
Cr: 11.5
Mo: 1.13
In this composition, the ratio Cr/C is in the neighbourhood of 12 and the content of equivalent carbon equals 1.535.
This composition is of course that of the working surface or outer region of the roll whose heart or core may be made for example from nodular iron. .Iadd.As is apparent from the foregoing, the roll is preferably bimetallic, lacking any partition wall. .Iaddend.After centrifugal casting, the roll is subjected to a suitable heat treatment comprising, for example, a simple quenching in air from a temperature of 1,000° C., if desired with a stage or step in the course of the cooling; these treatments are conventional and are consequently not described in more detail.
Such a roll has a hardness higher than 70 shore C.
Tests were carried out, in particular by using such a roll with a chrome iron roll of conventional design and composition C: 2.9--Si: 0.6--Mn: 0.91--Cr: 18.9--Ni: 0.92--Mo: 1.45. These two rolls were mounted together, while regularly reversing their positions, in the F3 stand of a hot continuous train or mill. It was found that, after an equivalent period of operation, the roll according to the invention had no geometrical wear and no trace of encrusting with oxide or scale, whereas the conventional roll already has a marked commencement of banding.
The object of the invention is therefore attained and a roll having in its working region the claimed composition has in the particularly difficult conditions of utilization encountered in roughing stands and in the first finishing stands of a hot train or mill, a behaviour and performance which are very substantially improved relative to known rolls, so that the overall output of the train or mill can be increased in the same proportions.

Claims (4)

    Having now described our invention what we claim as new and desire to secure by Letters Patent is: .[.1. A mill comprising a stand including rolls operating under hot conditions, said rolls having an improved resistance to banding and each comprising a metal core and a radially outer cast chrome steel cylindrical working region, said cast chrome steel containing between 0.9 and 1.3% of carbon and between 6 and 15% of chromium, the ratio between respective contents of chromium and carbon being between 7 and 12 and the content of equivalent carbon being between 1.5 and 1.7%, said content of equivalent carbon being calculated as the sum of the content of carbon and the content of chromium with the content of chromium being given a coefficient of 0.05, said chrome steel excluding boron and tungsten apart from any traces of boron and tungsten as
  1. impurities..]. 2. A method for hot rolling hot metal strip in a mill comprising a stand including rolls, said method comprising hot rolling the metal strip with composite metal rolls each of which rolls comprises a metal core and a radially outer cast chrome steel cylindrical working region, said cast chrome steel comprises between 0.9 and 1.3% of carbon and between 6 and 15% of chromium and wherein the ratio between respective contents of chromium and carbon is between 7 and 12 and the content of equivalent carbon is between 1.5 and 1.7%, said content of equivalent carbon being calculated as the sum of the content of carbon and the content of chromium with the content of chromium being given a coefficient of 0.05, said chrome steel excluding boron and tungsten apart from any
  2. traces of boron and tungsten as impurities. 3. A method for hot rolling hot metal strip in a mill comprising a stand including rolls, said method comprising hot rolling the metal strip with composite metal rolls each of which rolls comprises a metal core and a radially outer cast chrome steel cylindrical working region, said cast chrome steel comprises between 0.9 and 1.3% of carbon and between 6 and 15% of chromium and wherein the ratio between respective contents of chromium and carbon is between 7 and 12 and the content of equivalent carbon is between 1.5 and 1.7%, said equivalent carbon being calculated as the sum of the content of carbon and the content of chromium with the content of chromium being given a coefficient
  3. of 0.05. .Iadd.4. The method according to claim 1, wherein said strip is rolled with rolls of a roughing or finishing stand of a hot strip mill. .Iaddend. .Iadd.5. The method according to claim 2, wherein said strip is rolled with rolls of a roughing or finishing stand of a hot strip mill. .Iaddend. .Iadd.6. The method according to claim 1, wherein said strip is rolled with bimetallic rolls which lack a partition wall between metallic layers thereof. .Iaddend. .Iadd.7. The method according to claim 2, wherein said strip is rolled with bimetallic rolls which lack a partition wall between metallic layers thereof. .Iaddend. .Iadd.8. The method according to claim 1, wherein said strip is rolled with rolls which have
  4. been manufactured by centrifugal casting. .Iaddend. .Iadd.9. The method according to claim 2, wherein said strip is rolled with rolls which have been manufactured by centrifugal casting. .Iaddend. .Iadd.10. The method according to claim 1, wherein said strip is rolled with rolls having a core of nodular iron. .Iaddend. .Iadd.11. The method according to claim 2, wherein said strip is rolled with rolls having a core of nodular iron. .Iaddend.
US08/021,035 1979-11-13 1993-02-23 Method for hot rolling metal strip with composite metal rolls Expired - Lifetime USRE35052E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/021,035 USRE35052E (en) 1979-11-13 1993-02-23 Method for hot rolling metal strip with composite metal rolls

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR7927952A FR2469221A1 (en) 1979-11-13 1979-11-13 HAMMER ROLLER CYLINDER
FR7927952 1979-11-13
US20617780A 1980-11-12 1980-11-12
US06/490,161 US4507366A (en) 1979-11-13 1983-04-29 Rolling mill roll for a hot train of rolls
US08/021,035 USRE35052E (en) 1979-11-13 1993-02-23 Method for hot rolling metal strip with composite metal rolls

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US20617780A Continuation 1979-11-13 1980-11-12
US06/490,161 Reissue US4507366A (en) 1979-11-13 1983-04-29 Rolling mill roll for a hot train of rolls

Publications (1)

Publication Number Publication Date
USRE35052E true USRE35052E (en) 1995-10-03

Family

ID=9231611

Family Applications (2)

Application Number Title Priority Date Filing Date
US06/490,161 Ceased US4507366A (en) 1979-11-13 1983-04-29 Rolling mill roll for a hot train of rolls
US08/021,035 Expired - Lifetime USRE35052E (en) 1979-11-13 1993-02-23 Method for hot rolling metal strip with composite metal rolls

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US06/490,161 Ceased US4507366A (en) 1979-11-13 1983-04-29 Rolling mill roll for a hot train of rolls

Country Status (9)

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US (2) US4507366A (en)
EP (1) EP0028980B2 (en)
JP (1) JPS5696055A (en)
AT (1) ATE5569T1 (en)
BE (1) BE886137A (en)
DE (1) DE3065911D1 (en)
ES (1) ES8106844A1 (en)
FR (1) FR2469221A1 (en)
IT (1) IT1129847B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5868112A (en) * 1981-10-16 1983-04-22 Inoue Japax Res Inc Computer numerical control system
LU85579A1 (en) * 1984-10-08 1986-06-11 Marichal Ketin & Cie TWO-METAL ROLLER CYLINDER FOR DEGREASER OR FINISHER CAGE OF A HOT BAD TRAIN
LU85578A1 (en) * 1984-10-08 1986-06-11 Marichal Ketin & Cie LAYOUT OF THE LAST FINISHING CAGES OF A HOT STRIP TRAIN
ATE47675T1 (en) * 1984-11-14 1989-11-15 Centre Rech Metallurgique METHOD OF MARKING THE SURFACE OF A ROLLER.
FI853544A7 (en) * 1985-09-16 1987-03-17 Valmet Oy Press roll and method for manufacturing same.
JPS6224806A (en) * 1985-07-23 1987-02-02 Kubota Ltd composite sleeve
AU624109B2 (en) * 1987-12-23 1992-06-04 Chavanne-Ketin Composite bi-metallic support roll for 4- or 6- high hot rolling mill finisher
US5292382A (en) * 1991-09-05 1994-03-08 Sulzer Plasma Technik Molybdenum-iron thermal sprayable alloy powders
BE1006356A3 (en) * 1991-12-19 1994-08-02 Fond Marichal Ketin & Cie Sa D Bimetal working cylinder for hot rolling of steel strips
KR101592470B1 (en) * 2014-10-30 2016-02-11 주식회사 포스코 Hot rooling apparutus and hot rooling mothod

Citations (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB279149A (en) * 1926-07-07 1927-10-07 Francis David Corbin Improved rolls for rolling metals
DE562829C (en) * 1931-02-27 1932-10-29 Heraeus Vacuumschmelze Akt Ges Cold rolling
GB504224A (en) * 1937-04-30 1939-04-21 Sandvikens Jernverks Ab Alloy steel
US2576782A (en) * 1948-08-31 1951-11-27 Nat Tube Co Method of making hot mill tools
US3342058A (en) * 1962-03-26 1967-09-19 Hitachi Ltd Roll for cold-rolling metallic sheet materials
DE1284094B (en) * 1964-11-27 1968-11-28 Xaloy Inc Durable, stainless steel alloy and its use especially for rollers
FR1574542A (en) * 1967-07-27 1969-07-11
US3553993A (en) * 1969-01-31 1971-01-12 United States Steel Corp Method and apparatus for hot rolling
US3555003A (en) * 1968-10-22 1971-01-12 Hoechst Ag Water-insoluble benzimidazolone containing monoazo dyestuffs
FR2086965A5 (en) * 1970-04-15 1971-12-31 Usinor Prodn of rolling mill rolls
GB1271959A (en) * 1968-07-26 1972-04-26 Hitachi Ltd Compound cast rolls
FR2178319A5 (en) * 1972-03-28 1973-11-09 Ugine Aciers NEW APPLICATIONS OF HIGH FREQUENCY STEELS
DE2422629A1 (en) * 1973-05-11 1974-11-28 Hitachi Metals Ltd LARGE-FORMAT AND THICK COMPOSITE COATS OF HIGH HARDNESS
US3855015A (en) * 1969-11-04 1974-12-17 Hitachi Ltd Work roll for hot rolling
JPS5180350A (en) * 1975-01-10 1976-07-13 Mitsubishi Monsanto Chem Taryonoekijojozaino haigosaretasuchirenkeijushisoseibutsuno seizohoho
US3968551A (en) * 1974-06-12 1976-07-13 Hitachi Metals, Ltd. Adamite roll containing cobalt
US4035159A (en) * 1976-03-03 1977-07-12 Toyota Jidosha Kogyo Kabushiki Kaisha Iron-base sintered alloy for valve seat
US4043843A (en) * 1975-03-05 1977-08-23 Armco Steel Corporation Abrasion resistant, heat hardenable, stainless steel
US4064608A (en) * 1976-09-30 1977-12-27 Eutectic Corporation Composite cast iron drier roll
JPS536220A (en) * 1976-07-07 1978-01-20 Daido Steel Co Ltd Heat resistance steel having good hot crack resistance and wear resistance
SU596653A1 (en) * 1977-01-12 1978-03-05 Центральный Научно-Исследовательский Институт Технологии Машиностроения Steel
BE863704A (en) * 1978-02-06 1978-05-29 Hubner Bruno METHOD FOR MANUFACTURING FRETS IN IRON ALLOY AND APPARATUS FOR CARRYING OUT THE PROCESS
FR2374826A7 (en) * 1976-12-17 1978-07-13 Alsa Prod Vertrieb Sintered titanium carbide steel alloy - for woodworking tools and cold rolling cylinder surfacing
FR2382955A1 (en) * 1977-03-11 1978-10-06 Southwire Co METHOD AND DEVICE FOR HOT ROLLED NON-FERROUS METALS
US4365995A (en) * 1980-07-14 1982-12-28 Daido Metal Company Ltd. Method of producing multi-layer sliding material
US4436791A (en) * 1980-10-31 1984-03-13 Union Siderurgique Du Nord Et De L'est De La France Cast cold rolling roll
JPS6476119A (en) * 1987-09-18 1989-03-22 Hitachi Ltd Program edition executing system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR38706E (en) * 1930-05-26 1931-07-04 Improvements in the manufacture of cutting tools and instruments, and special composition steel for this manufacture

Patent Citations (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB279149A (en) * 1926-07-07 1927-10-07 Francis David Corbin Improved rolls for rolling metals
DE562829C (en) * 1931-02-27 1932-10-29 Heraeus Vacuumschmelze Akt Ges Cold rolling
GB504224A (en) * 1937-04-30 1939-04-21 Sandvikens Jernverks Ab Alloy steel
US2576782A (en) * 1948-08-31 1951-11-27 Nat Tube Co Method of making hot mill tools
US3342058A (en) * 1962-03-26 1967-09-19 Hitachi Ltd Roll for cold-rolling metallic sheet materials
DE1284094B (en) * 1964-11-27 1968-11-28 Xaloy Inc Durable, stainless steel alloy and its use especially for rollers
FR1574542A (en) * 1967-07-27 1969-07-11
GB1271959A (en) * 1968-07-26 1972-04-26 Hitachi Ltd Compound cast rolls
US3555003A (en) * 1968-10-22 1971-01-12 Hoechst Ag Water-insoluble benzimidazolone containing monoazo dyestuffs
US3553993A (en) * 1969-01-31 1971-01-12 United States Steel Corp Method and apparatus for hot rolling
US3855015A (en) * 1969-11-04 1974-12-17 Hitachi Ltd Work roll for hot rolling
FR2086965A5 (en) * 1970-04-15 1971-12-31 Usinor Prodn of rolling mill rolls
FR2178319A5 (en) * 1972-03-28 1973-11-09 Ugine Aciers NEW APPLICATIONS OF HIGH FREQUENCY STEELS
US3894325A (en) * 1973-05-11 1975-07-15 Hitachi Metals Ltd Large-sized and thick compound sleeves of high hardness
DE2422629A1 (en) * 1973-05-11 1974-11-28 Hitachi Metals Ltd LARGE-FORMAT AND THICK COMPOSITE COATS OF HIGH HARDNESS
US3968551A (en) * 1974-06-12 1976-07-13 Hitachi Metals, Ltd. Adamite roll containing cobalt
JPS5180350A (en) * 1975-01-10 1976-07-13 Mitsubishi Monsanto Chem Taryonoekijojozaino haigosaretasuchirenkeijushisoseibutsuno seizohoho
US4043843A (en) * 1975-03-05 1977-08-23 Armco Steel Corporation Abrasion resistant, heat hardenable, stainless steel
US4035159A (en) * 1976-03-03 1977-07-12 Toyota Jidosha Kogyo Kabushiki Kaisha Iron-base sintered alloy for valve seat
JPS536220A (en) * 1976-07-07 1978-01-20 Daido Steel Co Ltd Heat resistance steel having good hot crack resistance and wear resistance
US4064608A (en) * 1976-09-30 1977-12-27 Eutectic Corporation Composite cast iron drier roll
FR2374826A7 (en) * 1976-12-17 1978-07-13 Alsa Prod Vertrieb Sintered titanium carbide steel alloy - for woodworking tools and cold rolling cylinder surfacing
SU596653A1 (en) * 1977-01-12 1978-03-05 Центральный Научно-Исследовательский Институт Технологии Машиностроения Steel
FR2382955A1 (en) * 1977-03-11 1978-10-06 Southwire Co METHOD AND DEVICE FOR HOT ROLLED NON-FERROUS METALS
BE863704A (en) * 1978-02-06 1978-05-29 Hubner Bruno METHOD FOR MANUFACTURING FRETS IN IRON ALLOY AND APPARATUS FOR CARRYING OUT THE PROCESS
US4365995A (en) * 1980-07-14 1982-12-28 Daido Metal Company Ltd. Method of producing multi-layer sliding material
US4436791A (en) * 1980-10-31 1984-03-13 Union Siderurgique Du Nord Et De L'est De La France Cast cold rolling roll
JPS6476119A (en) * 1987-09-18 1989-03-22 Hitachi Ltd Program edition executing system

Non-Patent Citations (42)

* Cited by examiner, † Cited by third party
Title
Bashnin et al., Selection of steels for manufacturing work rolls of 20 roll mills, Steel in the USSR, Dec. 1978, (12), pp. 688 690. *
Bashnin et al., Selection of steels for manufacturing work rolls of 20-roll mills, Steel in the USSR, Dec. 1978, (12), pp. 688-690.
Discussions on papers presented at sessions `B` and `C` at the Institute's Annual Conference at Stratford upon Avon in May, The British Foundryman, Nov. 1974, vol. 67, Part 11, pp. 312-315.
Discussions on papers presented at sessions B and C at the Institute s Annual Conference at Stratford upon Avon in May, The British Foundryman, Nov. 1974, vol. 67, Part 11, pp. 312 315. *
Durman, A Study of the Fractography of High Chromium Alloys, paper 14 St Etienne 29/30 Nov., 1977 pp. 1 22. *
Durman, A Study of the Fractography of High Chromium Alloys, paper 14--St-Etienne 29/30 Nov., 1977 pp. 1-22.
E. Peterson, Cause and Prevention of Hot Strip Work Roll Banding, Iron and Steel Engineer, Dec. 1956, pp. 98 101. *
E. Peterson, Cause and Prevention of Hot Strip Work Roll Banding, Iron and Steel Engineer, Dec. 1956, pp. 98-101.
Harper, High Chromium Iron Roll Manufacture, 13th Annual Conference of Metallurgists (1974), Toronto, Canada, pp. 1 6 and FIGS. 1 23. *
Harper, High Chromium Iron Roll Manufacture, 13th Annual Conference of Metallurgists (1974), Toronto, Canada, pp. 1-6 and FIGS. 1-23.
Jackson et al., Metallurigical and production aspects of high chromium cast irons for abrasion resisting applications, The British Foundryman, Feb. 1974, pp. 34 41. *
Jackson et al., Metallurigical and production aspects of high chromium cast irons for abrasion resisting applications, The British Foundryman, Feb. 1974, pp. 34-41.
Kohira et al., The Recent Development of Rolls, Nippon Steel Technical Report Overseas No. 5, Mar. 1974 pp. 39 61. *
Kohira et al., The Recent Development of Rolls, Nippon Steel Technical Report Overseas No. 5, Mar. 1974 pp. 39-61.
Kudrna, The Development of Highly Hypereutectoid Alloy Steels for Section Rolls, (Hutn. Listy, 1966, 21, (10), pp. 712 720). *
Kudrna, The Development of Highly Hypereutectoid Alloy Steels for Section Rolls, (Hutn. Listy, 1966, 21, (10), pp. 712-720).
Maratray et al., Contribution A L Etude De La Durete Ses Structures Martensitiques Et De La Retention D Austenite, De Son Controle Et De Sa Transformation Dans Les Alliages Ferreus A Hautes Teneurs En Carbone Et En Chrome, Cercle d etude des Metaux, Nov. 29, 1977. *
Maratray et al., Contribution A L Etude Des Alliages Fe Cr Mo C, Bulletin du Cercle d Etudes des Metaux, Nov. 1973 pp. 11 55. *
Maratray et al., Contribution A L'Etude De La Durete Ses Structures Martensitiques Et De La Retention D'Austenite, De Son Controle Et De Sa Transformation Dans Les Alliages Ferreus A Hautes Teneurs En Carbone Et En Chrome, Cercle d'etude des Metaux, Nov. 29, 1977.
Maratray et al., Contribution A L'Etude Des Alliages Fe-Cr-Mo-C, Bulletin du Cercle d'Etudes des Metaux, Nov. 1973 pp. 11-55.
Metal Abstracts, vol. 8, No. 11, Nov. 1975, p. 2024, Item 51 0746: Maksimov et al., "Experience in Making Cast Rolls for Hot-Rolling [Mills]", Liteinoe Proizv., Mar. 1975, (3), 18-19.
Metal Abstracts, vol. 8, No. 11, Nov. 1975, p. 2024, Item 51 0746: Maksimov et al., Experience in Making Cast Rolls for Hot Rolling Mills , Liteinoe Proizv., Mar. 1975, (3), 18 19. *
Norman, Verschleissfeste Gusswerkstoffe Stand und Entwicklungen, Giesserei Praxis, Nr. 20/1969, pp. 359 364. *
Norman, Verschleissfeste Gusswerkstoffe--Stand und Entwicklungen, Giesserei-Praxis, Nr. 20/1969, pp. 359-364.
Patt, "Development, properties and applications of High Chromium Cast Steel in Hot Strip Mills, Plate Mills and cold Strip Mills", Karl Buch Roll-Foundry, 1979, pp. 1-19.
Patt, Development, properties and applications of High Chromium Cast Steel in Hot Strip Mills, Plate Mills and cold Strip Mills , Karl Buch Roll Foundry, 1979, pp. 1 19. *
R. V. Williams et al., Roll surface deterioration in hot strip mills, Journal of The Iron and Steel Institute, Apr. 1965, pp. 369 377. *
R. V. Williams et al., Roll surface deterioration in hot strip mills, Journal of The Iron and Steel Institute, Apr. 1965, pp. 369-377.
Roesch, Die verschleissfesten Stahlgusssorten, Giesserei, Jun. 23, 1966, pp. 430 435. *
Roesch, Die verschleissfesten Stahlgusssorten, Giesserei, Jun. 23, 1966, pp. 430-435.
Schmitz, Liste der in der Bundesrepublic Deutschland hergestellten Eisenwerkstoffe, Stahl Eisen Liste, 1977, pp. 64 73. *
Schmitz, Liste der in der Bundesrepublic Deutschland hergestellten Eisenwerkstoffe, Stahl-Eisen-Liste, 1977, pp. 64-73.
Staska et al., Untersuchungen an Fe Cr C Legierungen mit Molybd nzus tzen, Mikrochimica Acta Wien , Suppl. 5, 1974, pp. 111 127. *
Staska et al., Untersuchungen an Fe-Cr-C-Legierungen mit Molybdanzusatzen, Mikrochimica Acta [Wien], Suppl. 5, 1974, pp. 111-127.
Stevens et al, Increasing Work Roll Life by Improving Roll Cooling Practice, 5th Bisra 21/23 Oct. 1969, pp. 86 109. *
Stevens et al, Increasing Work Roll Life by Improving Roll Cooling Practice, 5th Bisra 21/23 Oct. 1969, pp. 86-109.
W. J. Williams, Banding in Hot Strip Mill Work Rolls, Iron & Steel, Aug. 1962, pp. 372 383. *
W. J. Williams, Banding in Hot Strip Mill Work Rolls, Iron & Steel, Aug. 1962, pp. 372-383.
Werquin et al., Nouveaux Developpements Des Cylindres A Haute Teneur En Chrome Pour Laminage A Chaud Et A Froid Des Metaux Ferreux Et Non Ferreux, Bulletin du Cercle D Etude des Metaux Dec. 1978, pp. 261 292. *
Werquin et al., Nouveaux Developpements Des Cylindres A Haute Teneur En Chrome Pour Laminage A Chaud Et A Froid Des Metaux Ferreux Et Non Ferreux, Bulletin du Cercle D'Etude des Metaux Dec. 1978, pp. 261-292.
Werquin, Le Comportement Au Laminage De La Surface Des Cylindres De Travail De Premieres Cages De Groupe Finisseur A Chaud A Haute Teneur En Chrome, Bulletin du Cercle d Etudes des Metaus Nov. 1973, pp. 195 and 226. *
Werquin, Le Comportement Au Laminage De La Surface Des Cylindres De Travail De Premieres Cages De Groupe Finisseur A Chaud A Haute Teneur En Chrome, Bulletin du Cercle d'Etudes des Metaus Nov. 1973, pp. 195 and 226.

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BE886137A (en) 1981-05-13
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FR2469221A1 (en) 1981-05-22
FR2469221B1 (en) 1983-12-02
EP0028980B1 (en) 1983-12-14
US4507366A (en) 1985-03-26
JPS641542B2 (en) 1989-01-11
IT1129847B (en) 1986-06-11
ATE5569T1 (en) 1983-12-15
ES8106844A1 (en) 1981-10-01

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