US20060053617A1 - Method and device for the continuous production of metallic strips - Google Patents

Method and device for the continuous production of metallic strips Download PDF

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Publication number
US20060053617A1
US20060053617A1 US10/522,484 US52248405A US2006053617A1 US 20060053617 A1 US20060053617 A1 US 20060053617A1 US 52248405 A US52248405 A US 52248405A US 2006053617 A1 US2006053617 A1 US 2006053617A1
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US
United States
Prior art keywords
strip
installation
rolling
heating
chemically treating
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.)
Abandoned
Application number
US10/522,484
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English (en)
Inventor
Withold Richert
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
Individual
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 Individual filed Critical Individual
Assigned to SMS DEMAG AKTIENGESELLSCHAFT reassignment SMS DEMAG AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: RICHERT, WITHOLD
Publication of US20060053617A1 publication Critical patent/US20060053617A1/en
Assigned to SMS SIEMAG AKTIENGESELLSCHAFT reassignment SMS SIEMAG AKTIENGESELLSCHAFT CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SMS DEMAG AKTIENGESELLSCHAFT
Abandoned 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
    • 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
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0035—Forging or pressing devices as units
    • B21B15/005—Lubricating, cooling or heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B3/02—Rolling special iron alloys, e.g. stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/44—Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices 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
    • B21B45/06—Devices 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
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49988—Metal casting
    • Y10T29/49991—Combined with rolling

Definitions

  • the invention pertains to a process for the continuous production of metal strip, preferably cold-rolled strip, and especially for the production of high-grade steel strip, where the strip to be produced is conducted in a transport direction through a system in which the strip is subjected to a rolling process, to a heating process, and to a chemical treatment.
  • the invention also pertains to a system especially for implementing the process.
  • a metal strip passes through a production system, in which various processes are performed on the strip.
  • the thickness of the strip is reduced by a rolling process. This can be followed by a heat treatment, by means of which the strip acquires special material properties.
  • the strip must have a scale-free surface, for which reason it is passed through a pickling line, in which a chemical treatment is applied to remove the scale.
  • the hot-rolled steel strip For further processing, which can involve, for example, cold-rolling, the application of a metallic coating, or direct processing into an end product, the hot-rolled steel strip must have a scale-free surface. For this reason, the scale which has formed during the hot-rolling operation and the following cooling phase must be removed completely. This is usually done by a pickling process, during which the scale, which consists of various iron oxides (FeO, Fe 3 O 4 , Fe 2 O 3 ) or, in the case of stainless steels, of these iron oxides plus chromium-rich iron oxides, is removed at elevated temperatures by chemical reaction with one of various acids, e.g., hydrochloric acid, sulfuric acid, nitric acid, or mixed acids, depending on the grade of steel.
  • various acids e.g., hydrochloric acid, sulfuric acid, nitric acid, or mixed acids, depending on the grade of steel.
  • an additional mechanical treatment by stretcher and roller leveling is usually required in the case of normal steel in order to break up the scale and thus to allow the acid to penetrate more quickly into the scale layer.
  • an annealing treatment and a mechanical pre-descaling of the strip are conducted prior to the pickling process so that the surface can be pickled as effectively as possible.
  • a process and a system of the general type in question is known from DE 100 22 045 C1.
  • a strip is guided through a pickling installation, which is both preceded and followed by a rolling unit. Downstream of the second rolling unit, the strip passes through an annealing furnace and then a pickling tank, in which the scale is removed from the surface of the strip. Before the strip, which is finished at this point, is coiled up, it can also be given a final treatment in a skin pass mill.
  • WO 00/37,189 and WO 00/37,190 disclose a system for the production of a metal strip, in which the thickness of the strip is first reduced in a multi-stand rolling mill. Then the strip passes through an annealing furnace; after that, the strip is guided through a pickling installation. Before the strip is coiled up, a rolling operation can be performed here, too, but it is used to reduce the thickness of the strip to only a very slight degree.
  • U.S. 2001/0,037,667 A1 discloses a similar system for the production of metal strip. Here, however, the strip is not heated. The strip is merely passed through a rolling mill after it has been descaled in a pickling line.
  • the dimensions of the equipment installed downstream from the rolling mill namely, the annealing furnace and the pickling line, must be adapted to the thickness of the strip, which has typically been reduced by the rolling process by 30-40%. Because the strip is now thinner but also longer, the annealing furnace and the pickling line must also be given a corresponding length, which increases the cost of the overall system.
  • the invention is therefore based on the task of creating a process and an associated system of the general type indicated above by means of which it is possible to avoid the disadvantages cited, and where in particular it is possible to achieve higher productivity and economy in the production of strip.
  • the surface quality of the finished strip is also to be improved.
  • this task is accomplished according to the invention in that the rolling process is not conducted until after the strip has been heated and after it has been chemically treated.
  • the goal is achieved that the above-mentioned disadvantages do not appear when the three process steps, namely, the rolling of the strip to the desired thickness, the heat treatment of the strip by an annealing process, and the descaling of the strip by pickling, are performed in the production system.
  • the strip is rolled from the original thickness to the reduced, final thickness only downstream of the annealing furnace and the pickling line, both the annealing furnace and the pickling line can be designed with smaller dimensions.
  • the above-cited rolling process is carried out only after the surface of the strip has been completely descaled, which minimizes the wear on the rolls.
  • the quality of the strip surface is improved without the need for any further measures.
  • the heating of the strip, the chemical treatment of the strip, and the rolling process are preferably conducted in that order.
  • the rolling process is preferably a tandem rolling process.
  • a “rolling process” is understood to involve a significant reduction in the thickness of the strip, preferably by at least 20%.
  • the chemical treatment of the strip is preferably a pickling process.
  • the inventive system for the continuous production of a cold-rolled metal strip has an installation for heating, i.e., especially for the annealing, of the strip; an installation for chemically treating the strip; and an installation for rolling the strip. It is provided according to the invention that the installation for rolling the strip is installed downstream of the installation for heating the strip and the installation for chemically treating the strip, where the installation for rolling the strip has at least one tandem rolling mill. This consists of several roll stands, which can be of the 6-high type or of the Z-high type. Beyond this rolling installation, nothing else is required to reduce the thickness of the strip.
  • a stretcher leveling unit between the installation for heating the strip (the annealing furnace) and the installation for chemically treating in the strip (the pickling line).
  • a metal grain shot-blasting unit can also be installed between the annealing furnace and the pickling line.
  • Providing the installation with at least one, preferably with three, loop towers makes it easier to keep the strip running as smoothly and uniformly as possible through the production system.
  • the previously explained production system can also be operated as a combination annealing and pickling line with integrated rolling mill (tandem mill) for hot-rolled and cold-rolled strip.
  • a degreasing installation can be also be installed upstream of the installation for heating the strip, especially upstream of the entry-side loop tower.
  • the drawing shows an exemplary embodiment of the invention.
  • the single FIGURE is a schematic diagram of a system for the production of high-grade steel strip.
  • a system 2 in which a metal strip 1 (metal strand) is processed.
  • the strip 1 is guided through the system 2 in the transport direction R, that is, from left to right in the FIGURE, the goal being for the strip 1 to pass through continuously (i.e., to pass through at a more-or-less constant speed).
  • the strip 1 is supplied to the system 2 from an entry-side section 13 (not shown). That is, the strip 1 is unwrapped with an uncoiler (not shown) and fed into the system 2 .
  • a degreasing installation 12 is Next in the transport direction R , in which the surface of the strip is cleaned. Then the strip 1 arrives in a loop tower 9 (entry-side storing unit), which is positioned underneath an installation 3 for heating the strip 1 (annealing furnace).
  • the loop tower 9 ensures the continuous travel of the strip even when slight external disturbances occur in the infeed of the strip.
  • the strip 1 is subjected to a heat treatment in the annealing furnace 3 . Then it arrives in a stretcher leveling unit 6 , in which the strip 1 is flattened.
  • the stretcher leveling unit 6 is followed by a metal grain shot-blasting unit 7 .
  • an installation 4 for chemically treating the strip 1 is installed, namely, a pickling line, in which the strip 1 is guided through tanks filled with acid.
  • the pickling process is able to remove the layer of scale on the surface of the strip 1 , and the quality of the surface of the strip 1 can thus be improved.
  • the pickling line 4 is a loop tower 11 (intermediate storing unit). From here, the strip 1 passes onward to a trimmer unit 8 , in which the sides of the strip are trimmed. From the edge trimmer 8 , the strip 1 passes by way of another loop tower 10 (exit-side storing unit) to the installation 5 for rolling the strip 1 .
  • This installation 5 is designed as a tandem rolling mill. A succession of three rolling stands 5 a , 5 b , 5 c , is provided, in which the strip 1 is rolled and its thickness thus reduced.
  • an exit section 14 Downstream of the tandem rolling mill 5 is an exit section 14 , which has a coiler (not shown), by means of which the finished strip 1 can be wound up into a coil.
  • the tandem rolling mill 5 has three rolling stands 5 a , 5 b , 5 c , which can be designed as a multi-roll cold-rolling mill in the form of a 6-high mill or a Z-high mill. Because the thickness reduction of the strip 1 occurs only at the end of the system 2 in the single installation 5 for rolling the strip 1 , the strip 1 is still relatively thick upon arrival at the tandem rolling mill 5 . That is, the strip still has the same thickness which it did on entering the system 2 . This means that the design length of both the annealing furnace 3 and the pickling line 4 can be kept relatively short.
  • Both the annealing furnace 3 and the pickling line 4 can be designed for the original thickness of the strip 1 , i.e., the thickness at which the strip 1 enters the system 2 .
  • the thickness can be reduced without previous annealing. As a result, the maximum thickness reduction is decreased to no more than 30-40%.
  • the maximum thickness reduction per pass of the strip 1 through the system 2 is based only on the materials and the capacity of the tandem rolling mill 5 . There is no need to take into consideration the unannealed strip.
  • a rolling stand of the tandem rolling mill 5 can be designed so that the strip 1 can be given a skin pass after a final annealing.
  • the descaled and preferably already side-trimmed strip can be supplied continuously to a following installation (a hot-dip galvanizing plant, etc.) under uniform strip tension without intermediate storage. After leaving the following installation, the finished strip can then be coiled up alternately on two different reels and cut into sections with shears.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating With Molten Metal (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
US10/522,484 2002-07-26 2003-07-10 Method and device for the continuous production of metallic strips Abandoned US20060053617A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102-34-109.5 2002-07-26
DE10234109A DE10234109A1 (de) 2002-07-26 2002-07-26 Verfahren und Vorrichtung zur kontinuierlichen Herstellung metallischer Bänder
PCT/EP2003/007464 WO2004012878A1 (de) 2002-07-26 2003-07-10 Verfahren und vorrichtung zur kontinuierlichen herstellung metallischer bänder

Publications (1)

Publication Number Publication Date
US20060053617A1 true US20060053617A1 (en) 2006-03-16

Family

ID=30010423

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/522,484 Abandoned US20060053617A1 (en) 2002-07-26 2003-07-10 Method and device for the continuous production of metallic strips

Country Status (15)

Country Link
US (1) US20060053617A1 (de)
EP (1) EP1525060B1 (de)
JP (1) JP2006502003A (de)
KR (1) KR100990865B1 (de)
CN (1) CN1671490A (de)
AT (1) ATE337862T1 (de)
AU (1) AU2003250025B2 (de)
BR (1) BR0312756B1 (de)
DE (2) DE10234109A1 (de)
ES (1) ES2271651T3 (de)
MX (1) MXPA05001083A (de)
RU (1) RU2350415C2 (de)
TW (1) TWI273929B (de)
WO (1) WO2004012878A1 (de)
ZA (1) ZA200500458B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095125A1 (en) * 2007-10-16 2011-04-28 Nobuhiro Tazoe Recoiling facility for magnesium alloy sheets

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101103346B1 (ko) * 2009-07-14 2012-01-11 주식회사 동방플랜텍 냉연 강판의 프로세싱 라인장치
RU2499640C1 (ru) * 2012-06-14 2013-11-27 Открытое акционерное общество "Северсталь" (ОАО "Северсталь") Способ производства холоднокатаного проката для упаковочной ленты
RU2592609C1 (ru) * 2015-04-21 2016-07-27 Публичное акционерное общество "Северсталь" (ПАО "Северсталь") Способ производства холоднокатаного проката для упаковочной ленты
TWI625172B (zh) * 2016-09-19 2018-06-01 複合式冷軋線
KR102503902B1 (ko) * 2018-09-28 2023-02-27 제이에프이 스틸 가부시키가이샤 방향성 전기 강판의 제조 방법 및 냉간 압연 설비

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5759307A (en) * 1995-09-01 1998-06-02 Keramchemie Gmbh Method of producing a cold-rolled strip in one pass
US5759306A (en) * 1995-03-10 1998-06-02 Kawasaki Steel Corporation Method for making a steel sheet suitable as a material for can making
US20010037667A1 (en) * 2000-04-21 2001-11-08 Francois Leroux Cold rolling method and installtion
US6478899B1 (en) * 1998-02-25 2002-11-12 Ugine S.A. Installation for making cold rolled stainless steel bands

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JPH05161901A (ja) * 1991-12-12 1993-06-29 Sumitomo Metal Ind Ltd 表面光沢の良好な冷延金属帯の製造方法
JPH07164008A (ja) * 1993-12-15 1995-06-27 Nkk Corp 酸洗−冷間圧延設備
JPH0824936A (ja) * 1994-07-15 1996-01-30 Nisshin Steel Co Ltd 金属帯の圧延方法および設備
RU2221655C2 (ru) * 1998-12-18 2004-01-20 АВЕСТА ПОЛАРИТ АКТИЕБОЛАГ (публ) Способ производства полос и технологическая линия прокатного стана
JP3460612B2 (ja) * 1999-03-04 2003-10-27 Ｊｆｅスチール株式会社 表面欠陥計を備えるプロセスライン
JP3695212B2 (ja) * 1999-03-30 2005-09-14 Ｊｆｅスチール株式会社 ステンレス鋼帯の冷間圧延方法
DE10022045C1 (de) * 2000-02-22 2001-07-19 Sundwig Gmbh Fertigungslinie und Verfahren zum kontinuierlichen Herstellen von kaltgewalzten metallischen Bändern
JP2001262232A (ja) * 2000-03-15 2001-09-26 Kawasaki Steel Corp ステンレス鋼帯の製造方法
JP2001340905A (ja) * 2000-05-31 2001-12-11 Kawasaki Steel Corp 黒皮鋼板の圧延方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5759306A (en) * 1995-03-10 1998-06-02 Kawasaki Steel Corporation Method for making a steel sheet suitable as a material for can making
US5759307A (en) * 1995-09-01 1998-06-02 Keramchemie Gmbh Method of producing a cold-rolled strip in one pass
US6478899B1 (en) * 1998-02-25 2002-11-12 Ugine S.A. Installation for making cold rolled stainless steel bands
US20010037667A1 (en) * 2000-04-21 2001-11-08 Francois Leroux Cold rolling method and installtion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095125A1 (en) * 2007-10-16 2011-04-28 Nobuhiro Tazoe Recoiling facility for magnesium alloy sheets

Also Published As

Publication number Publication date
AU2003250025B2 (en) 2008-08-28
AU2003250025A1 (en) 2004-02-23
BR0312756A (pt) 2005-04-26
EP1525060A1 (de) 2005-04-27
BR0312756B1 (pt) 2011-05-31
WO2004012878A1 (de) 2004-02-12
KR20050021565A (ko) 2005-03-07
KR100990865B1 (ko) 2010-10-29
ZA200500458B (en) 2006-04-26
CN1671490A (zh) 2005-09-21
TW200414942A (en) 2004-08-16
ES2271651T3 (es) 2007-04-16
RU2005105314A (ru) 2005-07-20
JP2006502003A (ja) 2006-01-19
DE10234109A1 (de) 2004-02-05
MXPA05001083A (es) 2005-06-06
DE50304876D1 (de) 2006-10-12
TWI273929B (en) 2007-02-21
ATE337862T1 (de) 2006-09-15
EP1525060B1 (de) 2006-08-30
RU2350415C2 (ru) 2009-03-27

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Owner name: SMS DEMAG AKTIENGESELLSCHAFT, GERMANY

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Effective date: 20050112

STCB Information on status: application discontinuation

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