EP0327855B1 - Installation pour laminer le feuillard immédiatement derrière l'installation de coulée continue - Google Patents

Installation pour laminer le feuillard immédiatement derrière l'installation de coulée continue Download PDF

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Publication number
EP0327855B1
EP0327855B1 EP19890100928 EP89100928A EP0327855B1 EP 0327855 B1 EP0327855 B1 EP 0327855B1 EP 19890100928 EP19890100928 EP 19890100928 EP 89100928 A EP89100928 A EP 89100928A EP 0327855 B1 EP0327855 B1 EP 0327855B1
Authority
EP
European Patent Office
Prior art keywords
roll
roll stand
speed
stand
casting
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
EP19890100928
Other languages
German (de)
English (en)
Other versions
EP0327855A2 (fr
EP0327855A3 (en
Inventor
Heinrich Bohnenkamp
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
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
Priority claimed from DE3812102A external-priority patent/DE3812102A1/de
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT89100928T priority Critical patent/ATE75168T1/de
Publication of EP0327855A2 publication Critical patent/EP0327855A2/fr
Publication of EP0327855A3 publication Critical patent/EP0327855A3/de
Application granted granted Critical
Publication of EP0327855B1 publication Critical patent/EP0327855B1/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
    • B21B1/46—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

Definitions

  • the invention relates to a system for rolling continuously cast metal strip from the casting heat with the rolling mill immediately preceding continuous casting system. Since such a system makes reheating of the continuously cast metal strip before further processing by rolling superfluous and thus promises significant advantages in terms of energy expenditure, numerous proposals for the design of such systems have been known since the beginning of development in the field of continuous casting technology. In practice, however, "rolling from the pouring heat" has not been successful. One reason for this may be that, because of the continuity of the continuous casting, a continuous mode of operation also seemed necessary for the rolling mill.
  • the invention has set itself the task of reducing the space requirement for a rolling mill immediately downstream of a continuous casting plant.
  • a known coreless winding machine (DE-PS 11 58 024) is arranged, which takes up the reduced metal strip in the first pass with casting speed.
  • a reversible bending and driving roller set of the coreless winding machine By means of a reversible bending and driving roller set of the coreless winding machine, the rolled up and thus stored metal strip can be moved out of the winding machine again, whereby means are provided to feed the metal strip again to the first rolling stand or stands, which can now be operated with increased rolling speed, preferably in continuous rolling with subordinate finishing stands.
  • the storability of a continuously cast metal strip reduced in one or a few first pass passes initially has the advantage that a metal strip can be kept warm in the case of faults in the continuous casting installation or in the rolling mill, such as in a furnace reel.
  • the primary task of the coreless reel-up in connection with the upstream guide, which can be pivoted about a horizontal axis, is to store the reduced metal strip for a short time with the least possible radiation losses, and then to use the reversible bending and driving rollers and the pivoted guide to reassemble the first roll stand in order to then be able to carry out the second rolling pass or the second series of passes (in the case of a continuous preliminary stage as the first rolling stands) with the same rolling stands that have mastered the first pass or the first series of passes.
  • the return of the rolling stock also eliminates the need for a reversing drive for the first rolling stand or stands, which leads to an advantageously compact construction of the rolling mill.
  • the first or the first roll stands suitably consist of duo roll stands.
  • the rolling mill according to the invention because of the intermediate storage in a coreless reeling machine, can only process the preliminary strip that is supplied by a discontinuously operating continuous caster, in dimensions that take into account the decrease in the first or the first passes of the rolling mill Take up capacity of the coreless rewinder.
  • the basic idea of the invention which can ultimately be seen in the double pass of at least one first roll stand of a rolling mill, can also be realized with continuous feeding of cut partial lengths of a fully continuously cast metal strip, the partial lengths of which follow one another directly.
  • roller table rollers are either provided with a freewheel that overtakes the set speed (claim 4), or the speed of these roller table rollers can be changed over to higher speed according to claim 5, the reversal via photocells or limit switches can be triggered by the completion of the separating cuts, according to which, however, when the roller table rollers are individually driven, the same and the rear cutting edge of a part length moving at the piercing speed are quasi retroactively controlled to the casting speed in order to carry an incoming part length non-slip during the separating cut.
  • the additive reverse control can be triggered by means of photocells arranged between the roller table rollers, or - more simply - derived from the drop in power consumption of the roller table motors.
  • outlet roller table section upstream of the first roll stand as a continuous furnace, but this is not the object of the protection.
  • the rolling mill shown has a single first duo roll stand 1, which is followed by a coreless winding machine 2.
  • This coreless winding machine has a system of circularly arranged winding rollers 3 for receiving a tape 4 which, under the influence of a reversibly driven bending and driving roller set 5, can be rolled up within the winding space enclosed by the winding rollers 3 and also moved out of the winding machine again, as in DE-PS 11 58 024 described for a hot plate rolling mill.
  • Coreless unwinding is an option if a rolled strip is still too thick to be wound up in a reel on a winding mandrel.
  • the rolling mill shown comprises a finishing line with two four-high rolling stands 6, 7.
  • the coreless rewinder 2 is offset from the common to all the rolling stands 8, for the following reasons: the coreless rewinder 2 is a funnel-like guide 9 upstream, which is arranged pivotably about a horizontal axis 10 upstream of the bending and driving roller set 5.
  • the guide 9 leads the metal strip 4, which is reduced in the DUO roll stand 1, from the rolling line 8 into the coreless winding machine 2.
  • the pivotable guide 9 is in the dash-dotted lower pivot position 9 'directed to a DUO roll stand 1 assigned bypass 11, which extends up to the roll gap of the duo roll stand 1.
  • the entire system according to FIG. 1 shows a continuous arc casting system 13 with an outfeed roller table 14 which extends to the first DUO mill stand 1.
  • the run-out roller table 14 is assigned a flame cutting machine 15, which can be moved over a travel distance F in order to subdivide continuously cast metal strip while the casting strand is being advanced. 1, the flame cutting machine 15 is at the end of the travel path F required for the separating cut.
  • the length L R of the roller table section 14a upstream of the first roll stand 1 from the end of the travel path F of the flame cutting machine 15 required for the separating cut to the first roll stand 1 is somewhat greater than that of the capacity of the take-up machine 2, taking into account the decrease in the first roll stand 1 certain part length L of the upstream side strip 12. This part length has run out freely before tapping in the roll stand 1, so that the tapping speed for this first roll stand can be higher than the casting speed of the continuous caster 13.
  • FIG. 2 To describe the mode of operation of the system according to the invention, reference is first made to FIG. 2.
  • the preliminary strip 12 coming from the continuous casting plant runs into the DUO roll stand 1 and is reduced there to the metal strip 4 in a first strong rolling pass, which is deflected downward from the rolling line 8 by means of the pivoted funnel-like guide 9 and the bending and driving roller set 5 is fed.
  • the metal strip 4 is given a curvature which enables the strip to be wound without a core within the system of the winding rolls 3.
  • the coreless Rewinder 2 the reduced and still relatively thick metal strip 4 is kept warm during the first roll pass.
  • the coreless winding machine 2 can therefore also be heated.
  • the metal strip 4 is moved out of the reeling machine 2 by means of the bending and driving roller set 5 and straightened again, the funnel-like guide 9 having been pivoted into the pivot position 9 corresponding to the bypass 11 '.
  • the reduced metal strip 4 is fed again to the duo roll stand 1 in order to be further reduced in a second pass without reversing this roll stand.
  • the rolling speed of the roll stand 1 (and accordingly the speed of the reversed bending and driving rollers 5) is increased as much as possible to the band 4 after the second reduction in the DUO roll stand 1 in the Finished mill stands 6 and 7 ready to be rolled.
  • a thickness measurement and descaling of the rolling stock can take place in the area between the first rolling stand 1 and the finishing stands 6, 7.
  • a piercing speed of 0.5 m / s is sufficient for the first roll stand 1 to cut a cut partial length of the preliminary strip 12 using the reeling machine 2 twice through the roll stand before the casting strand continuously advanced at the casting speed reaches the roll stand 1. If the roller table rollers of this roller table section 14a are set in their rotational speed to the low casting speed, the severed pre-strip 12 would, after tapping in the roll stand 1, have a tapping speed of five or more times grind the roller table rollers. To prevent this, the roller table rollers can be provided with a freewheel that overtakes the low speed in accordance with the casting speed.
  • Another possibility of a slip-free transport of the incoming casting strand or the running partial lengths can be achieved in that the speed of the roller table rollers of the roller table section 14a is derived from signals that indicate the completion of a separating cut by the flame cutting machine 15 from the casting speed of the Continuous caster 13 corresponding speed to the higher speed corresponding to the tapping speed of the first roll stand 1 can be reversed, whereby - since after each separating stitch the casting strand runs onto the outlet roller table section 14a at the casting speed - the roller table rollers of this section receive individual drives and the drives after the reversal the higher tapping speed starting with the first roller table roll is controlled back to the low speed corresponding to the casting speed. In this way, all roller table rollers always have the speed that corresponds to the feed speed of the material currently resting on them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Claims (6)

1. Installation de laminage d'une bande métallique produite par coulée continue et laminée depuis la température de coulée dans un laminoir situé immédiatement après l'installation de coulée continue,
caractérisée en ce que la ou les premières cages de laminoir (1) sont suivies d'une machine à enrouler sans noyau constituée par un jeu réversible de rouleaux cintreurs et entraîneurs (5) et par un système de rouleaux enrouleurs (3) disposés en cercle, en ce que l'installation comporte, avant la machine à enrouler sans noyau, un dispositif de guidage (9) en forme de trémie qui peut pivoter autour d'un axe horizontal (10) et reçoit la bande laminée (4) après sa réduction dans la ou les premières cages de laminoir et qui peut passer d'une position de pivotement dans laquelle la bande métallique réduite est engagée dans la machine à enrouler à une position de pivotement dans laquelle le dispositif de guidage (9′) est orienté vers un dispositif (11) d'inversion de direction qui s'étend jusqu'en avant de l'emprise de la première cage de laminoir et en ce que la ou les premières cages de laminoir peuvent, pour le nouveau passage de la bande métallique (4) provenant de la machine à enrouler, tourner à une vitesse de laminage supérieure à celle de la première passe.
2. Installation selon la revendication 1, caractérisée en ce que la ou les premières cages de laminoir sont des cages duo (1).
3. Installation selon la revendication 1 comprenant une installation de coulée continue qui fonctionne sans aucune interruption et dont le train de rouleaux d'évacuation est associé à une machine à découper au chalumeau qui est mobile et permet le cisaillage de tronçons pendant l'avance de la bande coulée, caractérisée en ce que la longueur (LR) du secteur (14a) du train de rouleaux d'évacuation situé en amont de la première cage de laminoir (1) entre l'extrémité du trajet de transport (F) que la machine à découper au chalumeau (15) doit effectuer pour le cisaillage et la première cage de laminoir est supérieure à la longueur partielle (L) de bande (12) déterminée par la capacité de réception de la machine d'enroulement (2), compte tenu de la réduction dans la ou les premières cages de laminoir, et en ce que la vitesse de la passe initiale dans la première cage de laminoir (1) dépasse la vitesse de coulée de l'installation de coulée continue (13) d'une quantité telle qu'après une deuxième passe d'une longueur partielle (L) la première cage de laminoir soit dégagée avant qu'une longueur partielle coupée droit n'atteigne la cage de laminoir.
4. Installation selon la revendication 3, caractérisée en ce que les rouleaux du train de rouleaux du secteur (14a) du train de rouleaux d'évacuation comportent un dispositif à course libre dont la vitesse dépasse la vitesse de rotation réglée.
5. Installation selon la revendication 4, caractérisée en ce que la vitesse de rotation des rouleaux du secteur (14a) du train de rouleaux d'évacuation peut être modifiée, à la suite de signaux indiquant la fin d'un cisaillage pour passer de la vitesse de rotation qui correspond à la vitesse de coulée de l'installation de coulée continue (13) à la vitesse de rotation plus élevée qui correspond à la vitesse de la passe initiale dans la première cage de laminoir (1) et en ce que les rouleaux du train de rouleaux sont commandés individuellement et qu'après le passage à la vitesse plus élevée correspondant à la passe initiale leurs dispositifs d'entraînement peuvent être ramenés, d'une manière additive, à partir du premier rouleau du train de rouleaux, à la vitesse de rotation inférieure correspondant à la vitesse de coulée.
6. Installation selon la revendication 5, caractérisée en ce que la modification additive, dans le sens du retour, de la vitesse de rotation des rouleaux du train dans le secteur (14a) du train de rouleaux d'évacuation dépend de la diminution de la prise de puissance des moteurs du train de rouleaux.
EP19890100928 1988-02-10 1989-01-20 Installation pour laminer le feuillard immédiatement derrière l'installation de coulée continue Expired - Lifetime EP0327855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100928T ATE75168T1 (de) 1988-02-10 1989-01-20 Anlage zum walzen von metallband unmittelbar hinter der stranggiessanlage.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3804005 1988-02-10
DE3804005 1988-02-10
DE3812102 1988-04-10
DE3812102A DE3812102A1 (de) 1988-02-10 1988-04-12 Anlage zum walzen von stranggegossenem metallband aus der giesshitze mit dem walzwerk unmittelbar vorgeordneter stranggiessanlage

Publications (3)

Publication Number Publication Date
EP0327855A2 EP0327855A2 (fr) 1989-08-16
EP0327855A3 EP0327855A3 (en) 1990-07-04
EP0327855B1 true EP0327855B1 (fr) 1992-04-22

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ID=25864728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890100928 Expired - Lifetime EP0327855B1 (fr) 1988-02-10 1989-01-20 Installation pour laminer le feuillard immédiatement derrière l'installation de coulée continue

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EP (1) EP0327855B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0446602A (ja) * 1990-06-11 1992-02-17 Ishikawajima Harima Heavy Ind Co Ltd 熱間粗圧延設備

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1373375A (en) * 1971-11-15 1974-11-13 Canada Steel Co Method for rolling hot metal workpieces
JPS58100903A (ja) * 1981-12-09 1983-06-15 Kawasaki Steel Corp 特殊連鋳機と熱間圧延配置列
JPS59209405A (ja) * 1983-05-12 1984-11-28 Kawasaki Steel Corp 連続熱間圧延ライン
US4630352A (en) * 1984-09-04 1986-12-23 Tippins Machinery Company, Inc. Continuous rolling method and apparatus
JPH0753284B2 (ja) * 1985-12-05 1995-06-07 石川島播磨重工業株式会社 熱間圧延設備

Also Published As

Publication number Publication date
EP0327855A2 (fr) 1989-08-16
EP0327855A3 (en) 1990-07-04

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