EP0368048B1 - Verfahren und Vorrichtung zur Herstellung von warmgewalzten Stahlbändern - Google Patents

Verfahren und Vorrichtung zur Herstellung von warmgewalzten Stahlbändern Download PDF

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Publication number
EP0368048B1
EP0368048B1 EP89119376A EP89119376A EP0368048B1 EP 0368048 B1 EP0368048 B1 EP 0368048B1 EP 89119376 A EP89119376 A EP 89119376A EP 89119376 A EP89119376 A EP 89119376A EP 0368048 B1 EP0368048 B1 EP 0368048B1
Authority
EP
European Patent Office
Prior art keywords
rolling
finishing
train
oven
equalising
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
EP89119376A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0368048A2 (de
EP0368048A3 (de
Inventor
Jürgen Seidel
Wolfgang Dr. Rohde
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
Priority to AT89119376T priority Critical patent/ATE102087T1/de
Publication of EP0368048A2 publication Critical patent/EP0368048A2/de
Publication of EP0368048A3 publication Critical patent/EP0368048A3/de
Application granted granted Critical
Publication of EP0368048B1 publication Critical patent/EP0368048B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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
    • B21B1/24Metal-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
    • B21B1/26Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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
    • B21B1/30Metal-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 non-continuous process
    • B21B1/32Metal-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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34Metal-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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/46Metal-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
    • B21B1/466Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B35/00Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/12Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203Cooling
    • B21B45/0209Cooling devices, e.g. using gaseous coolants
    • B21B45/0215Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/06Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/4998Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988Metal casting
    • Y10T29/49989Followed by cutting or removing material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/4998Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988Metal casting
    • Y10T29/49991Combined with rolling
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5184Casting and working
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5197Multiple stations working strip material
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5198Continuous strip

Definitions

  • the invention relates according to the preamble of claims 1 and 4 to a method and an apparatus for the production of hot-rolled steel strips etc. from continuously cast materials in continuously successive working steps, the continuously cast material being cut to a certain length after solidification, brought to rolling temperature in a compensating furnace and is introduced into a finishing mill for rolling; see JP-A-62 097 702.
  • the object of the invention consists in a further substantial process and device improvement, in particular the last-mentioned measures for producing hot-rolled steel strips etc.
  • the task is solved procedurally by that the continuously cast primary material after heating in the equalizing furnace is brought directly to a roller table and from there it is introduced into a reversible finishing mill and a reduction in the strand thickness is carried out in the first pass, the intermediate thickness achieved in this way being selected so that the strand is easily coilable after descaling and is wound up in a coil box, and then unwound from the coil box in a reversing stitch, rolled to final dimensions to form the finished strip, this is cooled and wound up on a reel between the roller table and the equalizing furnace.
  • an intermediate stand cooling which is regulated over the length and width of the strip in accordance with the temperature profile.
  • a constant rolling temperature is set by the intermediate stand cooling, whereby uniform, improved material properties are achieved over the entire length of the strip.
  • the object of the invention is achieved that the finishing mill is designed with reversing stands, which is followed by a coil box, and that a reversing roller table, both as a feed roller table and an outfeed roller table, is arranged between the equalizing furnace and finishing roller mill and a finishing strip reel is arranged between this and the equalizing furnace, and that the main load-bearing rolling mills of the finishing rolling mill are equipped with gearboxes are equipped.
  • the coil box can also be designed as a winding furnace. After leaving the last roll stand, the respective strand is wound up in the coil box. In this way, it is very advantageous to save on the length of the hall and, above all, the temperature loss for the intermediate belt end or intermediate strand end can be kept very low.
  • the device shown in the drawing is a continuous casting installation consisting of two casting machines (1 and 2). Each casting machine is followed by a compensating furnace (3) or (4), to which the strands (5) or (6) are fed directly. Cutting machines (7, 8) for cutting the strands (5, 6) to a predetermined length are arranged between the casting machines (1, 2).
  • This finishing mill (10) is advantageously designed with four stands, ie it has four rolling mills (F1, F2, F3, F4) arranged one after the other at a distance.
  • Devices (11, 12) for descaling or cooling the rolling strands are arranged between the rolling mills (F1, F2) and (F3).
  • a further descaling device (13) is connected to the finish rolling mill (10), followed by a coil box (14) (shown in a schematic side view rotated from the drawing plane by 90 degrees).
  • the rolling mills (F1, F2, F3, F4) of the finishing mill (10) are connected to the drive motors (19, 20, 21, 22) by way of comb rolling gears (15, 16, 17, 18).
  • gearboxes (24) and (25) are provided between the comb roller gears (16) and (17) and the drive motors (20) and (21).
  • These gearboxes (24, 25), via which the main load-bearing rolling mills (F2) and (F3) of the finishing mill (10) are driven, enable considerably better utilization of the drive motors (20, 21), ie the drive motors (20, 21) can can be operated at full capacity without oversizing.
  • the rolling mills (F2, F3) it is therefore possible to use much less complex motors than was previously the case with the conventional rolling mills for producing hot-rolled steel strips from continuously cast materials.
  • pre-strips or strands (5, 6) with a thickness of more than 50 mm, preferably of 65 mm, are produced in the casting machines (1, 2).
  • the strand (5) or (6) is cut off by the cutting machine (7) or (8) and in the compensating oven (3) or (4) to a temperature of 1100 degrees C to 1130 degrees C brought or heated.
  • the strand (5) is brought directly onto the roller table (9) directly (while the reel with driver (30) required for later winding of the finished rolled strip remains inoperative) and from there the rolling mill or reversible finishing mill (10) fed, while the strand (6) coming from the equalization furnace (4) is transported onto the feed roller table (9) with the aid of an encapsulated cross ferry (26) and with the aid of a transverse displacement device (not shown in the drawing) in the direction of the arrow (27), which at the same time also as Outfeed roller table is used.
  • the strand (6) is then unencapsulated and fed directly to the finishing mill (10) without the use of a buffer or holding furnace.
  • the feed of the strands (5) and (6) from the equalizing furnaces (3) and (4) into the finishing mill (10) is very advantageously alternating and continuous.
  • the higher pre-strip thickness or the thickness of the strands (5, 6) very advantageously reduces the temperature loss or the necessary temperature increase in the finishing mill (10).
  • the rolling mill (F1) On the rolling mill (F1), for example, no pass acceptance is carried out during the first pass through the respective strand.
  • the rolling mill (F1) therefore only takes over the transport function for the strip or the strand.
  • descaling of the rolling strands takes place in the devices (11, 12).
  • the intermediate thickness of the strands must be chosen so that the strands are easily coiled in the coil box (14) after descaling in the descaling device (13) without problems can.
  • the winding speed of the strands in the coil box (14) is relatively low at approximately 1.6 m / s at the head and 2.8 m / s (depending on the strip thickness) at the end.
  • the drives of the rolling mills (F2) and (F3) - in certain cases also of (F1) - are very advantageously equipped with manual transmissions (24) and (25) in order to be able to optimally use the drive motors (20, 21) and reduce investment costs.
  • the drives of the rolling mills have to be braked, the gear ratios on the rolling mills (F2) and (F3) have to be switched over and the drives have to be accelerated again.
  • the rollers designed as CVC rollers may have to be moved and the mechanical adjustments moved to the new positions.
  • the strand in the coil box (14) is kept warm. Only the outer strand turn cools more in the coil box (10) compared to the other inner turns of the strand.
  • this drop in temperature of about 15 degrees C of the outer strand turn can very easily be caused by a non-uniform increase in speed in the reversing stitch and / or by an increase in the length of the strip - corresponding to the Temperature curve - controlled interframe cooling can be reduced.
  • No manual gearbox is required on the roll stand (F4), since the roll speeds of the rolling mill (F4) are approximately the same for the first pass through the strands and the reversing process.
  • the rolling strip must be descaled in the descaling device (13) before it enters the rolling mill (F4). All rolling mills from (F4) to (F1) are used in the reversing process.
  • the strip which is then rolled in each case is cooled and wound on a reel shown in the drawing with the reference number (30).
  • the exit speed from the finishing mill (10) after the last pass is approx. 8 m / s for a 2 mm thick finishing strip.
  • the reduction in production due to the reversing process can, however, be easily compensated for at any time by correspondingly higher rolling speeds.
  • the object of the invention is not limited to the embodiment shown in the drawing. So without leaving the scope drawn by the claims if necessary, the finishing mill can also be very advantageously designed as a three-stand mill in a corresponding adaptation to the respective single-strand or multi-strand caster. It is also very advantageous to be able to swing the strip on the roller table in front of the finishing mill, on which if it is should be necessary for metallurgical reasons, lower pre-strip inlet temperatures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Laminated Bodies (AREA)
EP89119376A 1988-11-05 1989-10-19 Verfahren und Vorrichtung zur Herstellung von warmgewalzten Stahlbändern Expired - Lifetime EP0368048B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89119376T ATE102087T1 (de) 1988-11-05 1989-10-19 Verfahren und vorrichtung zur herstellung von warmgewalzten stahlbaendern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837642A DE3837642A1 (de) 1988-11-05 1988-11-05 Verfahren und vorrichtung zur herstellung von warmgewalzten stahlbaendern
DE3837642 1988-11-05

Publications (3)

Publication Number Publication Date
EP0368048A2 EP0368048A2 (de) 1990-05-16
EP0368048A3 EP0368048A3 (de) 1991-01-23
EP0368048B1 true EP0368048B1 (de) 1994-03-02

Family

ID=6366594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119376A Expired - Lifetime EP0368048B1 (de) 1988-11-05 1989-10-19 Verfahren und Vorrichtung zur Herstellung von warmgewalzten Stahlbändern

Country Status (6)

Country Link
US (1) US4998338A (es)
EP (1) EP0368048B1 (es)
JP (1) JPH02175009A (es)
AT (1) ATE102087T1 (es)
DE (2) DE3837642A1 (es)
ES (1) ES2050204T3 (es)

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DE4001288A1 (de) * 1990-01-18 1991-07-25 Schloemann Siemag Ag Anlage zum auswalzen von warmbreitband
DE4017928A1 (de) * 1990-06-05 1991-12-12 Schloemann Siemag Ag Verfahren und anlage zur herstellung von warmgewalzten baendern oder profilen aus stranggegossenem vormaterial
DE4041206C2 (de) * 1990-12-21 2003-04-17 Sms Demag Ag Verfahren und Anlage zur Herstellung von warmgewalztem Stahlband, insbesondere für Edelstähle aus stranggegossenem Vormaterial
DE4041205A1 (de) * 1990-12-21 1992-06-25 Schloemann Siemag Ag Verfahren und anlage zum auswalzen von warmbreitband aus stranggegossenen duennbrammen
ES2097223T5 (es) * 1991-02-19 2000-07-16 Danieli Off Mecc Sistema de tunel para un tren de laminado de bandas en caliente acoplado a la colada continua de planchas delgadas.
US5579569A (en) * 1992-05-12 1996-12-03 Tippins Incorporated Slab container
IT1259487B (it) * 1992-08-26 1996-03-20 Danieli Off Mecc Procedimento per la produzione di lamiere sottili ed impianto di laminazione compatto adottante tale procedimento
DE4234455A1 (de) * 1992-10-13 1994-04-14 Schloemann Siemag Ag Verfahren und Anlage zum Auswalzen von Warmbreitband aus stranggegossenen Dünnbrammen
US5430930A (en) * 1993-10-12 1995-07-11 Italimpianti Of America, Inc. Method of manufacturing hot strip
JP3063518B2 (ja) * 1993-12-27 2000-07-12 株式会社日立製作所 連続鋳造装置及び連続鋳造システム
US5632177A (en) * 1994-03-01 1997-05-27 Hitachi, Ltd. System and method for manufacturing thin plate by hot working
JP3413819B2 (ja) * 1995-01-19 2003-06-09 石川島播磨重工業株式会社 連続鋼板製造設備
DE19725434C2 (de) * 1997-06-16 1999-08-19 Schloemann Siemag Ag Verfahren zum Walzen von Warmbreitband in einer CSP-Anlage
US6158498A (en) 1997-10-21 2000-12-12 Wagstaff, Inc. Casting of molten metal in an open ended mold cavity
DE19814223A1 (de) * 1998-03-31 1999-10-07 Schloemann Siemag Ag Verfahren zur Herstellung von mikrolegierten Baustählen
DE10047044A1 (de) * 2000-09-22 2002-04-25 Sms Demag Ag Verfahren und Anlagen zum Herstellen von Bändern und Blechen aus Stahl
CN100443200C (zh) * 2004-01-12 2008-12-17 鞍钢股份有限公司 双连铸机四流单辊道三加热炉中薄板坯直装物流控制方法
DE102005010243A1 (de) * 2005-03-05 2006-09-07 Sms Demag Ag Verfahren und Anlage zur Herstellung eines Leichtbaustahls mit einem hohen Mangan-Gehalt
CN101293258B (zh) * 2007-04-25 2010-12-01 宝山钢铁股份有限公司 中薄板坯连铸连轧生产热轧带钢的方法
CN102764762A (zh) * 2012-08-01 2012-11-07 中冶京诚工程技术有限公司 生产长材的连铸连轧装置和方法
EP2944386A1 (en) 2014-05-13 2015-11-18 Primetals Technologies Austria GmbH Apparatus and method for production of long metal products
JP6233613B2 (ja) * 2016-01-26 2017-11-22 Jfeスチール株式会社 熱延鋼帯の製造設備列および熱延鋼帯の製造方法
CN106552831B (zh) * 2016-06-28 2019-07-12 东北大学 一种薄规格热轧带钢的制造方法
DE102021208149A1 (de) * 2021-07-28 2023-02-02 Sms Group Gmbh Verfahren und Anlage zum Warmwalzen von metallenem Walzgut

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JPS6297702A (ja) * 1985-10-24 1987-05-07 Sumitomo Metal Ind Ltd 熱間リバ−スミルによる鋼板の製造方法
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DE3665680D1 (en) * 1986-10-13 1989-10-26 Schloemann Siemag Ag Production of hot-rolled steel strip from continuously cast slabs
AU2669088A (en) * 1987-12-18 1989-06-22 Hitachi Limited Apparatus and method for hot-rolling slab into sheets

Also Published As

Publication number Publication date
DE3837642A1 (de) 1990-05-17
US4998338A (en) 1991-03-12
EP0368048A2 (de) 1990-05-16
DE58907090D1 (de) 1994-04-07
JPH02175009A (ja) 1990-07-06
EP0368048A3 (de) 1991-01-23
ATE102087T1 (de) 1994-03-15
ES2050204T3 (es) 1994-05-16

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