EP0947265B1 - Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz - Google Patents

Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz Download PDF

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Publication number
EP0947265B1
EP0947265B1 EP99106087A EP99106087A EP0947265B1 EP 0947265 B1 EP0947265 B1 EP 0947265B1 EP 99106087 A EP99106087 A EP 99106087A EP 99106087 A EP99106087 A EP 99106087A EP 0947265 B1 EP0947265 B1 EP 0947265B1
Authority
EP
European Patent Office
Prior art keywords
width
strip
setting
slab
finished
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
EP99106087A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0947265A3 (de
EP0947265A2 (de
Inventor
Jürgen Seidel
Karl-Ernst Dr. Hensger
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 Demag 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 Demag AG filed Critical SMS Demag AG
Publication of EP0947265A2 publication Critical patent/EP0947265A2/de
Publication of EP0947265A3 publication Critical patent/EP0947265A3/de
Application granted granted Critical
Publication of EP0947265B1 publication Critical patent/EP0947265B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • Y10T29/49764—Method of mechanical manufacture with testing or indicating
    • 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
    • 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 relates to a method for continuous casting and finish rolling of a casting slab within a given finished width tolerance, wherein for the casting slab and occasionally a follow-up ram an adjustment of the mold position especially made in accordance with different rolling conditions becomes.
  • the technology of casting thin slabs used with great advantage enables continuous casting with continuous casting formats between approx. 30 and 100 mm thickness at 800 to 2200 mm width and preferably direct rolling with Compared to conventional production processes considerably reduced forming work in a rolling mill, with the production chain from crude steel to Walzer product is significantly shortened.
  • a corresponding prior art shows the device according to EP-OS 0 149 734.
  • This document is a mold for continuous casting thin slabs with cooled broadside walls and narrow side walls, wherein the broad side walls limited to only a part of the mold height, funnel-shaped Eingello Scheme form, to the narrow sides and in the casting direction reduced to the format of the cast slab.
  • the broadside walls laterally of the funnel-shaped Eingello Schemees run in one of Slab thickness corresponding distance parallel, up to the respective narrow side wall forming a parallel area extending from the pouring area.
  • the narrow side walls are in the parallel region of the broad side walls adjustable. The adjustment, for example, the width of thin slabs u.a. also from DE 35 01 422 C2 known.
  • the invention has the object based, a method referred to in the preamble of claim 1.
  • the inventive method of width optimization can both in a multi-stand system, as well as in a reversing stand with several Find stitches application.
  • the actuators of Finishing line relieved and the finished width by presetting the mold slab used for slab.
  • Slab width is that preferably the finishing line actuators for the Width setting can be used.
  • the surface quality or the casting speed to avoid a change in the mold position or the Verstellbeträge or frequency to minimize, become the effective parameters of the finishing train used for the width so that the desired (often the same) finished tape width within the tolerance arises (see explanations to Fig. 3).
  • An embodiment of the method provides that the width preset for the Kokillenstellglieder and the finishing line actuators (preset) made so is that for each rolled strip about the middle of the tolerance band of the Finished width results.
  • a width presetting is made on the mold and at the same time the adjustment can be withdrawn in the rolling mill.
  • the method according to the invention provides that by comparing the measured width of the casting slab with the calculated slab width an adaptation correction coefficient won and to correct the Breitungsmodelles is used.
  • a width error measured in the area of the casting machine can be applied to the Breitungsmodell be switched to the finishing train.
  • the minimum / maximum Setting ranges of the finished road links are determined so that only after reaching minimum or maximum adjustment ranges of the finishing road actuators one Change the mold position is made.
  • the diagram lines in the upper area of FIG. 1 show a stitch plan with a larger number of coils, with the thicknesses of the products of individual coils between 1 and 3 mm vary.
  • the lower diagram shows that, when the position is kept constant the Kokille set themselves significantly different bandwidths.
  • the hatched Surfaces below the bandwidth line give the thickness of the rolled strip resulting overwidths. It can be seen that with increasing thickness a rolled strip whose width decreases disproportionately. It turns out the conclusion that for each finished strip a calculation of the necessary mold width must be carried out, and for the associated instantaneous cast slab or for the present slab.
  • a width adjustment The mold of slab to slab is required, as is the dependence between strip thickness and width can be read from the diagrams of FIG. 1, to the width of, for example. 1 mm strip thickness rolled strip within the tolerance width Tol, i. to lie under the hatched area.
  • the maximum permissible strip dimensions of a planned production program are considered and the effective parameters ( ⁇ W) of the finishing train are used in the direction of spreading or constriction. If the input width (B BR ) is present, then according to the flowchart of FIG. 2, the finishing line effect parameters ( ⁇ W) for the bandwidth corresponding to the claimed fine adjustment order are used such that the difference between the calculated tape width and the target width is less than Compliance with plant and material limits is minimized.
  • the width of the rolled strip is checked to see whether it is within the permissible range. If so, then there is no iteration of the optimization measures. If not, iteratively, ie step by step, the finishing-line parameters are changed.
  • the finishing line adjustment consisting of pass plan model 10, contour model 11 and spreading model 12 is restarted both for the width change (12a) on the casting machine (Caster C) and for the change in width (FIG. 12b) in the finishing line F.
  • This iteration loop is called up until the possibilities of changing the finishing-line effective parameters ⁇ W have been exhausted.
  • the designations B F1-n denote the bandwidths between the individual stands of the finishing train.
  • the flowchart further shows that an adaptation value 13 is obtained by comparing the measured width of the casting slab B BR with the calculated slab width (12 a). Also, the measured bandwidth 16 is used compared to the calculated bandwidth 14 for a correction value and applied to the spreading model 12. When the effective finished width B F is reached, the iteration for the change of the finishing line effective parameters is finished and the correct finished product needs no further corrections.
  • the mold width B K is chosen such that for the finished product 2, the bandwidth B F2 is in the hatched tolerance window or equal to the target width B Z , then often result for the finished product 1 with the same mold width excess width B F1 .
  • the width effective ranges W 1 , W 2 of the finishing line actuators for both finished products 2 and 1 are then determined.
  • the mean value B M between the maximum possible finished width B F2 and the minimum possible finished width B F1 is determined.
  • the optimized widths B ' F1 result with the use of the finishing line actuators .
  • B 'F2 both of which are within tolerance window width ⁇ B. If the finished width B ' F2 lies below the minimum width tolerance limit, ie in the impermissible range, then the mold width must be corrected by this amount.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
EP99106087A 1998-03-31 1999-03-26 Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz Expired - Lifetime EP0947265B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814222A DE19814222A1 (de) 1998-03-31 1998-03-31 Verfahren zum Stranggießen und Fertigwalzen eines Gießstranges innerhalb einer vorgegebenen Fertigbreitentoleranz
DE19814222 1998-03-31

Publications (3)

Publication Number Publication Date
EP0947265A2 EP0947265A2 (de) 1999-10-06
EP0947265A3 EP0947265A3 (de) 2001-01-31
EP0947265B1 true EP0947265B1 (de) 2005-09-28

Family

ID=7862993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99106087A Expired - Lifetime EP0947265B1 (de) 1998-03-31 1999-03-26 Verfahren zum Stranggiessen und Fertigwalzen eines Giessstranges innerhalb einer vorgegebenen Fertigbreitentoleranz

Country Status (6)

Country Link
US (1) US6112394A (cg-RX-API-DMAC7.html)
EP (1) EP0947265B1 (cg-RX-API-DMAC7.html)
JP (1) JPH11319901A (cg-RX-API-DMAC7.html)
AT (1) ATE305347T1 (cg-RX-API-DMAC7.html)
DE (2) DE19814222A1 (cg-RX-API-DMAC7.html)
ES (1) ES2249855T3 (cg-RX-API-DMAC7.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2453385C2 (ru) * 2010-08-30 2012-06-20 Закрытое акционерное общество "Волгоградский металлургический завод "Красный Октябрь" (ЗАО "ВМЗ "Красный Октябрь") Способ прокатки с созданием заданного напряженного состояния по сечению заготовки и заготовка для его осуществления

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10047381A1 (de) * 2000-09-25 2002-04-18 Siemens Ag Verfahren und Vorrichtung zum Betreiben einer Anlage der Grundstoffindustrie
US6857464B2 (en) 2002-09-19 2005-02-22 Hatch Associates Ltd. Adjustable casting mold
CN101786146B (zh) * 2009-12-30 2012-01-11 东北大学 一种在线控制炼钢连铸的方法
DE102015223496A1 (de) * 2015-11-26 2017-06-01 Sms Group Gmbh Verfahren und Vorrichtung zum Einstellen der Breite eines stranggegossenen Metallstrangs

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358358A (en) * 1964-12-31 1967-12-19 United States Steel Corp Method of reducing width of metal slabs
JPS5340631A (en) * 1976-09-27 1978-04-13 Kawasaki Steel Co Method of changing width of casting in continuous casting
US4110824A (en) * 1977-05-18 1978-08-29 Youngstown Sheet And Tube Company Method and apparatus for continuously processing strand
US4577277A (en) * 1983-03-07 1986-03-18 Kabushiki Kaisha Kobe Seiko Sho Method and apparatus of continuous casting by the use of mold oscillating system
DE3400220A1 (de) * 1984-01-05 1985-07-18 SMS Schloemann-Siemag AG, 4000 Düsseldorf Kokille zum stranggiessen von stahlband
AT379093B (de) * 1984-02-16 1985-11-11 Voest Alpine Ag Durchlaufkokille fuer eine stranggiessanlage
JPS63252609A (ja) * 1987-04-10 1988-10-19 Mitsubishi Heavy Ind Ltd ホツトストリツプミルの板幅制御方法
JPH01233005A (ja) * 1988-03-14 1989-09-18 Sumitomo Metal Ind Ltd 薄鋳片の熱間圧延における板幅制御方法
US5205345A (en) * 1991-08-07 1993-04-27 Acutus Industries Method and apparatus for slab width control
JP2698520B2 (ja) * 1992-08-31 1998-01-19 日立金属株式会社 通気性鋳型の鋳造方案の作成方法
DE4310332A1 (de) * 1993-03-31 1994-10-06 Mueller Weingarten Maschf Verfahren zur Ermittlung von optimalen Parametern eines Gießprozesses insbesondere an Druckgießmaschinen
JPH08192209A (ja) * 1995-01-13 1996-07-30 Kobe Steel Ltd ストリップの熱間圧延方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2453385C2 (ru) * 2010-08-30 2012-06-20 Закрытое акционерное общество "Волгоградский металлургический завод "Красный Октябрь" (ЗАО "ВМЗ "Красный Октябрь") Способ прокатки с созданием заданного напряженного состояния по сечению заготовки и заготовка для его осуществления

Also Published As

Publication number Publication date
EP0947265A3 (de) 2001-01-31
ES2249855T3 (es) 2006-04-01
EP0947265A2 (de) 1999-10-06
DE59912593D1 (de) 2005-11-03
JPH11319901A (ja) 1999-11-24
DE19814222A1 (de) 1999-10-07
ATE305347T1 (de) 2005-10-15
US6112394A (en) 2000-09-05

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