EP0761325A1 - Installation et procédé pour la production d'une bande d'acier ferritique laminée à chaud - Google Patents

Installation et procédé pour la production d'une bande d'acier ferritique laminée à chaud Download PDF

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Publication number
EP0761325A1
EP0761325A1 EP96113056A EP96113056A EP0761325A1 EP 0761325 A1 EP0761325 A1 EP 0761325A1 EP 96113056 A EP96113056 A EP 96113056A EP 96113056 A EP96113056 A EP 96113056A EP 0761325 A1 EP0761325 A1 EP 0761325A1
Authority
EP
European Patent Office
Prior art keywords
rolling
stand
production plant
cooling
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.)
Granted
Application number
EP96113056A
Other languages
German (de)
English (en)
Other versions
EP0761325B1 (fr
Inventor
Wolfgang Prof. Dr. Rohde
Manfred Albedyhl
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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 SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0761325A1 publication Critical patent/EP0761325A1/fr
Application granted granted Critical
Publication of EP0761325B1 publication Critical patent/EP0761325B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B21B1/28—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 cold-rolling, e.g. Steckel cold mill
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/04—Ferritic rolling

Definitions

  • the invention relates to a production system for the production of hot-rolled flat products, consisting of a multi-stand rolling mill, an outfeed roller table with devices for cooling the hot strip and with downstream winding machines for winding the strip.
  • Rolling plants for the production of hot-rolled strips are generally designed and operated today in such a way that the forming in the individual stands is austenitic, which means that it is ensured that the rolling temperatures in the individual stands are above the GOS line of the iron-carbon diagram. Only after the last rolling pass, which should be as close as possible to the GOS line to achieve a fine-grained final structure, does cooling to the coiling temperature take place with structural change in the cooling section or in the wound bundle.
  • the final rolling temperature for the rolling according to the process described above i.e. the temperature in the last mill stand of the rolling mill, is 840 to 920 ° C depending on the level of carbon content.
  • the final rolling temperature is maintained by selecting the final rolling speed with which the natural cooling of the strip in the rolling mill and the heat input can be controlled by the drive power of the roll stands.
  • This method is easily applicable for strip thicknesses above a minimum strip thickness, each is of the order of 1.3 mm depending on the road type. If this strip thickness is undershot, the required rolling speed with values above 12 m per second reaches a height that can no longer be controlled in the free run-out on the roller table behind the rolling mill.
  • a preferred method provides for preliminary rolling in the austenitic range down to an intermediate thickness of 2 to 8 mm and finish rolling in the ferritic range for minimum final thicknesses below 1.3 mm.
  • the rolling stock must be cooled from the finish rolling temperature in the austenitic range to the rolling temperature in the ferritic range. This means cooling from the temperature range of 840 to 920 ° C to the temperature range of 600 to 780 ° C.
  • the final rolling temperature after the second deformation stage is also in the range from 600 to 780 ° C and thus in a range at which recrystallization of the structure in the wound bundle occurs after reeling.
  • a structure is created which enables the product to be used without further cold forming or heat treatment.
  • the object of the invention is to provide a production plant for the ferritic rolling of hot strip, with which the aforementioned disadvantages and problems are eliminated.
  • the object of the invention is also to provide a method with which finish rolling of hot strip in the ferritic range is made possible without problems.
  • the problem is solved in a production plant of the type mentioned at the outset with the invention in that the additional arrangement of a one to four-stand compact rolling mill 6 behind the coiler 5 of the conventionally designed hot strip mill 3 is proposed (see FIG. 1).
  • This rolling mill is specially designed for forming in the ferritic area. This includes, among other things, equipping with work roll diameters of less than 500 mm as well as adjusting and control loops to achieve strip tolerances for thickness and flatness, as required by cold rolled products.
  • the conventionally designed hot strip mill 3 takes over the production of an intermediate thickness by rolling in the austenitic area and the compact ferritic forming stage 6 takes over the final rolling in the ferritic area.
  • the cooling of the strip with an intermediate thickness from the austenitic area into the ferritic area takes place in the simplest way when passing through the run-out roller table 4 between the austenitic forming step 3 and the ferritic forming step 6. Due to the length of this roller table, the strips which are rolled for cooling austenitic to the coiling temperature Throughput times result which, in the case of ferritic rolling, normally ensure the necessary cooling and the conversion of austenite into ferrite.
  • the cooling devices 9 available for the austenitic rolling process can, if necessary, also be used to achieve the required cooling rate. If the throughput time from the last austenitic forming 3.1 to the first ferritic forming 6.1 is not sufficient for a sufficient conversion from austenite to ferrite, a heated loop storage device (not shown) is provided, which is located directly between the conventional coiler system 5 and the compact ferritic forming step 6 is to be arranged.
  • reels 8 specially designed for winding thin strip 7 are arranged. Since the needs of thicker belts no longer have to be taken into account for the local conditions, the construction of such devices is possible without any problems.
  • the hot strip production plant 1 for austenitic and ferritic rolling shown in the single figure is preceded by a roughing mill 12 (not shown in more detail) or a thin slab furnace with casting machine 13 before the first multi-stand rolling mill 3.
  • the invention results in an overall system concept which optimally permits both the austenitic process and the ferritic rolling process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Winding Of Webs (AREA)
  • Laminated Bodies (AREA)
EP96113056A 1995-08-25 1996-08-14 Installation et procédé pour la production d'une bande d'acier ferritique laminée à chaud Expired - Lifetime EP0761325B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19531538A DE19531538A1 (de) 1995-08-25 1995-08-25 Warmbandproduktionsanlage für ferritisches Walzen und Verfahren zur Erzeugung von ferritischem Walzband
DE19531538 1995-08-25

Publications (2)

Publication Number Publication Date
EP0761325A1 true EP0761325A1 (fr) 1997-03-12
EP0761325B1 EP0761325B1 (fr) 2001-11-28

Family

ID=7770535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113056A Expired - Lifetime EP0761325B1 (fr) 1995-08-25 1996-08-14 Installation et procédé pour la production d'une bande d'acier ferritique laminée à chaud

Country Status (12)

Country Link
US (1) US5771731A (fr)
EP (1) EP0761325B1 (fr)
JP (1) JP3883614B2 (fr)
KR (1) KR100424528B1 (fr)
CN (1) CN1081961C (fr)
AT (1) ATE209537T1 (fr)
CA (1) CA2183950C (fr)
DE (2) DE19531538A1 (fr)
ES (1) ES2169184T3 (fr)
MY (1) MY118124A (fr)
RU (1) RU2179083C2 (fr)
TW (1) TW311890B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870553A2 (fr) * 1997-04-10 1998-10-14 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et train de laminage pour produits plats et minces
DE19758108C1 (de) * 1997-12-17 1999-01-14 Mannesmann Ag Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten
WO1999004915A1 (fr) * 1997-07-21 1999-02-04 Kvaerner Metals Continuous Casting Limited Procede de fabrication de metal en continu et appareil correspondant

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903926A1 (de) * 1999-02-01 2000-08-03 Sms Demag Ag Verfahren und Anlage zum Umformen von Metallband
FR2792857B1 (fr) * 1999-04-28 2001-07-27 Kvaerner Metals Clecim Procede de fabrication, en continu, d'une bande metallique
US20050115649A1 (en) * 2003-03-27 2005-06-02 Tokarz Christopher A. Thermomechanical processing routes in compact strip production of high-strength low-alloy steel
EP2301684A1 (fr) * 2009-09-24 2011-03-30 Siemens Aktiengesellschaft Procédé de laminage doté d'une pénétration de contrainte optimisée
AT509707B1 (de) * 2010-05-04 2011-11-15 Siemens Vai Metals Tech Gmbh Verfahren zum warmwalzen von stahlbändern und warmwalzstrasse
CN106391710B (zh) * 2016-09-27 2018-07-31 武汉钢铁有限公司 薄板坯连铸连轧产线小批量产品的生产方法及控制装置
CN113996651A (zh) * 2021-10-29 2022-02-01 马鞍山钢铁股份有限公司 一种低碳钢及提高csp流程铁素体轧制低碳钢性能均匀性的制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903554A1 (de) * 1968-01-24 1969-08-28 Sumitomo Metal Ind Verfahren zur Herstellung von warmgewalztem Bandstahl
DE2613459A1 (de) * 1976-03-30 1977-10-13 Schloemann Siemag Ag Verfahren und anlage zur vermeidung des schrottanfalles in kontinuierlichen breitbandstrassen
EP0226446A2 (fr) * 1985-12-12 1987-06-24 Kawasaki Steel Corporation Procédé pour produire des bandes laminées minces à bonne formabilité
JPS62230403A (ja) * 1985-12-12 1987-10-09 Kawasaki Steel Corp 薄鋼板製造設備列
JPH0446608A (ja) * 1990-06-12 1992-02-17 Kawasaki Steel Corp 多段熱間圧延機
EP0524162A2 (fr) * 1991-07-17 1993-01-20 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé de fabrication d'une bande mince en acier doux

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5133205A (en) * 1990-11-13 1992-07-28 Mannesmann Aktiengesellschaft System and process for forming thin flat hot rolled steel strip
JPH0655202A (ja) * 1992-08-07 1994-03-01 Kawasaki Steel Corp 温間圧延鋼板の圧延方法
ES2112440T3 (es) * 1993-05-17 1998-04-01 Danieli Off Mecc Linea para producir banda y/o plancha.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903554A1 (de) * 1968-01-24 1969-08-28 Sumitomo Metal Ind Verfahren zur Herstellung von warmgewalztem Bandstahl
DE2613459A1 (de) * 1976-03-30 1977-10-13 Schloemann Siemag Ag Verfahren und anlage zur vermeidung des schrottanfalles in kontinuierlichen breitbandstrassen
EP0226446A2 (fr) * 1985-12-12 1987-06-24 Kawasaki Steel Corporation Procédé pour produire des bandes laminées minces à bonne formabilité
JPS62230403A (ja) * 1985-12-12 1987-10-09 Kawasaki Steel Corp 薄鋼板製造設備列
JPH0446608A (ja) * 1990-06-12 1992-02-17 Kawasaki Steel Corp 多段熱間圧延機
EP0524162A2 (fr) * 1991-07-17 1993-01-20 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé de fabrication d'une bande mince en acier doux

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 229 (M - 1255) 27 May 1992 (1992-05-27) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 91 (M - 679) 24 March 1988 (1988-03-24) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870553A2 (fr) * 1997-04-10 1998-10-14 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et train de laminage pour produits plats et minces
EP0870553A3 (fr) * 1997-04-10 1999-02-10 DANIELI & C. OFFICINE MECCANICHE S.p.A. Procédé et train de laminage pour produits plats et minces
US6062055A (en) * 1997-04-10 2000-05-16 Danieli & C. Officine Meccaniche Spa Rolling method for thin flat products and relative rolling line
WO1999004915A1 (fr) * 1997-07-21 1999-02-04 Kvaerner Metals Continuous Casting Limited Procede de fabrication de metal en continu et appareil correspondant
DE19758108C1 (de) * 1997-12-17 1999-01-14 Mannesmann Ag Produktionsverfahren und -anlage zur endlosen Erzeugung von warmgewalzten dünnen Flachprodukten
WO1999030847A1 (fr) * 1997-12-17 1999-06-24 Sms Demag Ag Procede et installation de production continue de produits plats et minces lamines a chaud

Also Published As

Publication number Publication date
ES2169184T3 (es) 2002-07-01
US5771731A (en) 1998-06-30
ATE209537T1 (de) 2001-12-15
MY118124A (en) 2004-09-30
TW311890B (fr) 1997-08-01
DE59608302D1 (de) 2002-01-10
DE19531538A1 (de) 1997-02-27
JP3883614B2 (ja) 2007-02-21
CA2183950A1 (fr) 1997-02-26
CN1153685A (zh) 1997-07-09
EP0761325B1 (fr) 2001-11-28
CN1081961C (zh) 2002-04-03
JPH09122708A (ja) 1997-05-13
KR19980015600A (ko) 1998-05-25
CA2183950C (fr) 2007-04-24
KR100424528B1 (ko) 2004-05-20
RU2179083C2 (ru) 2002-02-10

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