EP0121148B1 - Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité - Google Patents

Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité Download PDF

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Publication number
EP0121148B1
EP0121148B1 EP84102546A EP84102546A EP0121148B1 EP 0121148 B1 EP0121148 B1 EP 0121148B1 EP 84102546 A EP84102546 A EP 84102546A EP 84102546 A EP84102546 A EP 84102546A EP 0121148 B1 EP0121148 B1 EP 0121148B1
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EP
European Patent Office
Prior art keywords
strip
roll
profile
thickness
planarity
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Expired
Application number
EP84102546A
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German (de)
English (en)
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EP0121148A1 (fr
Inventor
Jürgen Klöckner
Wolfgang Rohde
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SMS Siemag AG
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SMS Schloemann Siemag AG
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Priority claimed from DE19833309040 external-priority patent/DE3309040A1/de
Priority claimed from DE19843401894 external-priority patent/DE3401894A1/de
Application filed by SMS Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0121148A1 publication Critical patent/EP0121148A1/fr
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    • 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

Definitions

  • the invention relates to a method and a rolled strip tandem mill for the production of rolled strip, in which this is passed through the hot strip tandem mill and is thereby subjected to a condition control during the rolling process, which is a strip profile control and in at least the last roll stand one of a flatness measurement of the from the last stand the hot strip tandem mill emerging from the rolled strip outgoing strip profile and flatness control.
  • a condition control takes place for each pass in both the hot strip tandem mill that performs the hot rolling process and the cold strip tandem mill that carries out the cold rolling process.
  • a state control includes various control processes such as, for example, the speed control, the thickness control, the strip tension control, the strip profile control and the strip flatness control, which can influence one another to a greater or lesser extent and thus also have corresponding repercussions on the condition of the rolled strip.
  • profile correction is based on a material flow along and across the rolling direction.
  • the ability of the material to flow transversely to the rolling direction depends on the geometric rolling conditions, such as thickness, decrease, width and roll diameter, as well as other parameters such as material strength, strip temperature, coefficient of friction between the roll and the rolling stock, and the strip tension.
  • Flatness correction is based on different lengthening of the strip with a small, practically negligible material flow across the rolling direction.
  • the invention has for its object to design the generic method so that a rolling strip is provided for the cold rolling process, which has a uniform strip profile and a minimum degree of strip flatness over the entire width.
  • This object is achieved by determining and determining the critical thickness of the rolled strip below which no substantial reshaping of the rolled strip in the direction of the width can be achieved, rolling this rolled strip, the thickness of which is significantly greater than the determined critical thickness in succession in a first and second Rolling stage in which the rolled strip is passed through at least one roll gap forming this, reducing the thickness of the rolled strip in the first rolling stage to essentially the critical thickness determined, checking the reaction of the thickness of the rolled strip in this rolling stage by measuring the thickness behind the first Rolling step and setting at least the last roll gap in this first rolling step based on the result of the measurement of the thickness, measurement of the flatness of the rolled strip in the second rolling step at least at one point in the course of this rolling step and reduction of the thickness of the rolled strip in this second rolling step f is a thickness below the critical thickness based on the measurement of the flatness of the rolled strip.
  • a first and a second rolling stage in which, based on the determination of the critical thickness of the respective rolled strip in the first stage, the reduction of the rolled strip is carried out with the means of the thickness control technology while spreading the rolled strip cross-section to the critical thickness and In the subsequent second rolling stage, further reduction can only be achieved with the means of flatness control in correspondingly small steps while elongating the strip.
  • a rolled strip is produced that has a uniform strip profile over the entire width and a minimum degree of strip flatness.
  • the proposed method is based on the knowledge that a profile influence on the rolled strip can be achieved while avoiding flatness errors, as long as the flow resistance of the material across the rolling direction is still so low that a minimum amount of strip width is set in the roll gap in addition to the strip elongation. It was found that with today's design of the hot strip tandem mill, which is customary with regard to the work roll diameter, the limit for influencing the profile of the rolled strip while avoiding flatness errors is a roll strip thickness of approximately 12 mm. This limit value of the thickness, i.e. the critical thickness, can be determined experimentally for each hot strip tandem mill depending on the rolling material, temperature, roll diameter and decrease or pass distribution.
  • the height of the last roll gap in the first rolling stage can be set in accordance with the comparison of the result of a measurement of the thickness of the rolled strip behind the first rolling stage with a predetermined standard experience value, the result of the measurement of the flatness of the rolled strip can be compared with a given standard experience value.
  • the size of the reduction in the thickness of the rolled strip in the first rolling stage can be determined and regulated on the basis of measurements of the thickness of the rolled strip within the second rolling stage.
  • a rolled strip tandem mill for producing rolled strip in which it is subjected to a state control during the rolling process, which includes a strip profile control and, in the last rolling stand, a strip profile and flatness control based on a flatness measurement of the rolled strip emerging from this stand, with which the methods explained above are carried out can consist of a group of roll stands with a roll gap height equal to or greater than the critical thickness to which profile measuring devices and profile controllers are assigned, which are connected to strip profile actuators on the roll stands, while the last roll stand of this group and all other roll stands of the hot strip tandem mill flatness measuring devices and have flatness controllers which are connected to strip flatness actuators, the last rolling stand of the first group optionally being influenced either by profile measuring devices and profile controllers or by flatness measuring devices and flatness controllers is cash.
  • the profile measuring devices or the flatness measuring devices can be arranged downstream of the roll gap to be controlled of the roll stands of the first group or of the subsequent roll stands.
  • the flatness control acts in a manner known per se only on the last rolling stand of the hot strip tandem mill.
  • the profile measuring device at the outlet of the street first detects the deviation of the strip profile generated by it.
  • the required adjustment of the roll gap of the last stand that is to say the nth stand, is automatically determined with the aid of pre-calculated characteristic curves for the actuating behavior of the roll set.
  • the required adjustment of the roll gap shape in the previous stands is determined step by step.
  • the roll gap shape actuators of the first size or sizes are now automatically adjusted to the pre-calculated dimension. Delayed by the advancement time of the strip from the adjusted stand to the next, not yet adjusted, this next stand is then also adjusted, this procedure is continued until the last of the roll nips has also been adjusted in the calculated amount.
  • the control dynamics of the profile control is due to the previously mentioned transport times of the rolled strip from the point of adjustment (first Scaffolding of the road) to the place of measurement (behind the last scaffolding).
  • the control dynamics are sufficient to compensate for slowly occurring profile changes (roller wear, thermal crowning) sufficiently quickly.
  • Relatively quick and short-term profile changes e.g. B. due to short-term changes in the rolling force, cannot be corrected due to the transport routes by a corresponding backward regulation (up to 20% short-term increase in rolling force when rolling over rail points (skidmarks)), cause additional bending of the roller sets and thus distort the profile of the strip and its flatness.
  • the change in the shape of the roll gap as a result of a change in the rolling force is calculated for each roll stand, depending on the strip and roll dimensions.
  • the change in manipulated variable required to compensate for this change can be represented in equations or sets of curves and automatically taken into account.
  • each roll stand is thus detected with the force measuring devices which are present anyway, and changes in the force are compensated for directly in accordance with previously determined curves by interventions in the profile actuators (for example work roll bending force).
  • the gap shape setting values which are improved in the course of the rolling by the interventions of the closed flatness and profile control loops, are used to gradually improve the pre-setting values stored with the data of the pass schedule and the material data.
  • the increase in the strip profile in the middle of the strip is in the range from 0.5% to approx. 1.5% of the final thickness.
  • the control objective is to minimize the elevation of the strip center or to a predetermined value of z. B. 1.0% of the nominal thickness reproducible.
  • the setting range for the setting of the roll gap shape should therefore ideally be 0.75% of the nominal thickness and should still have sufficient reserves to compensate for changes in rolling force and other disturbance variables.
  • the profile and flatness control can be limited to the last two to three passes.
  • the last two to five passes for profile and flatness control are required (the low number applies to large final thicknesses h> 5 mm and the higher number applies to small final thicknesses).
  • the belt profile actuators can be used to roll bend, roll adjustment, roll limitation, roll swiveling, zone cooling of the roll bales, as well as axial work roll, intermediate roll (e.g. with six-high stands) and backup roll displacement in the corresponding roll stands of the hot strip tandem mill can be influenced individually and / or simultaneously.
  • the hot strip tandem mill according to FIGS. 1 to 3 comprises, in addition to the five roll stands 1 to 5, a take-up reel 6 for the hot strip 7 provided on the outlet side.
  • a profile measuring device 8, 9 and 10 is provided behind each of the roll stands 1, 2 and 3, and that Roll stand 3 is designed so that the rolled strip running out of its roll gap can have a maximum thickness of approximately 12 mm.
  • Each of the profile measuring devices 8, 9 and 10 works together with a profile controller 13, 14 and 15, while the flatness measuring devices 10 ', 11 and 12 are each assigned a flatness controller 15', 16 and 17.
  • the strip profile can be scanned on each of the rolled strips 7 emerging from the rolled rolls 1, 2 and 3 via the profile measuring devices 8, 9 and 10, the resulting measurement values being supplied as actual values to the profile regulators 13, 14 and 15 and with the target values stored therein can be compared, which correspond to the optimal strip profile in the area of the respective roll stand 1, 2 and 3.
  • the difference values resulting from the respective comparison are given as manipulated values on belt profile actuators of stands 1, 2 and 3.
  • the belt profile actuators can act on the roll bending, the roll adjustment, the roll limitation, the roll swiveling, the zone cooling of the roll bales as well as the axial work roll, intermediate roll (e.g.
  • a so-called CVC roll stand (DE-PS-3 038 865) can also be used as a means of influencing the strip profile.
  • the belt profile actuators can also cause the CVC rollers to move axially. It is important that the rolled strip 7 emerging from the roll stand 3 has an optimal strip profile, even if it slightly exceeds the "critical thickness" of approximately 12 mm. In addition, the rolling strip 7 emerging from the roll stand 3 must have a minimum of strip flatness, at least when it slightly exceeds the "critical thickness” of 12 mm when it emerges from the roll gap.
  • the possibility - already indicated - is provided of also assigning a strip flatness control 10 ', 15' to the last roll stand 3 which can still be operated with strip profiles 10, 15 and which corresponds to the strip flatness controls 11, 16, 12, 17 of the roll stands 4 and 5 corresponds.
  • the arrangement is such that, depending on the decrease or stitch distribution provided in the hot strip tandem line according to the respective pass schedule, the roll stand 3 either with strip profile control 10.15 according to FIG. 2 or with strip flatness control 10 ', 15' according to FIG 3 can be operated.
  • the mill stands 4 and 5 of the hot strip tandem mill are operated exclusively with flatness control 11, 16 and 12, 17, respectively, so that the hot strip 7 that runs out of the hot strip tandem mill and is taken up by the take-up reel 6 has a finished thickness that is both over 3 mm (FIG. 2) and can also be less than 3 mm (Fig. 3), in addition to an optimal band profile also has a considerable flatness quality.
  • the rolling stand 3 can thus be driven either with profile control 10, 15 or with flatness control 10 ', 15'.
  • FIGS. 2 and 3 A comparison of FIGS. 2 and 3 makes it clear that the boundary from influencing the profile to influencing the flatness of the hot strip either between the third roll stand 3 and the fourth roll stand 4 (FIG. 2) or between the second roll stand 2 and the third roll stand (FIG. 3 ) may lie. Therefore, according to FIG. 1, the third roll stand 3 is assigned on the one hand the profile controller 15 and on the other hand the flatness controller 15 ', the profile controller 15 on the profile measuring device 10 and the flatness controller 15' on the flatness measuring device 10 'between the third roll stand 3 and the fourth roll stand 4 can address.
  • a hot strip with an initial thickness of 38 mm is to be rolled down to a final thickness of more than 8 mm in the hot strip tandem mill.
  • the hot strip 7 behind the first roll stand 1 still has a thickness of 24.7 mm and behind the roll stand 2 its thickness is still 16.5 mm.
  • Behind the roll stand 3, the hot strip 7 with 12.3 mm has already reached the "critical thickness" of about 12 mm, while behind the fourth roll stand 4 a thickness of 9.8 mm and behind the fifth roll stand 5 a thickness of 8.14 mm is present.
  • the profile control 10, 15 for the roll stand 3 can optionally work by reaching through to the roll stands 1 and 2, with such a reach-through control the own profile control 8.13 or 9.14 of the roll stands 1 and 2 could be omitted.
  • the profile measuring device 10 for the roll stand 3 can also be arranged behind the stand 4 or 5, for example. This also applies if a flatness correction is carried out in stands 4 and 5.
  • a - thinner - hot strip 7 with an initial thickness of 30 mm should be rolled down to a - also thinner - final thickness of 2.5 mm.
  • the hot strip behind the first roll stand 1 has a thickness of 15.3 mm, while behind the second roll stand 2 it already falls below the —critical thickness “of approximately 12 mm, namely 8.3 mm thick.
  • the hot strip 7 runs out of the third roll stand 3 with a thickness of 5.0 mm, while it has the thickness of 3.4 mm behind the fourth roll stand 4 and the final thickness of 2.5 mm behind the fifth roll stand 5.
  • this can be run essentially without strip profile control, but with strip flatness control, in order to obtain a finished rolled strip with high strip profile and strip flatness quality with a thickness of, for example, 0.3 mm.
  • FIG. 4 The end section of a hot strip tandem mill shown in FIG. 4, which here comprises, for example, seven stands, consists of stands 62 with the order numbers F1-F7. All scaffolding 62 are equipped with devices and adjusting means for adjustment, thickness control, balancing and bending which are not part of the invention. Each stand 62 has two support rollers 60 and two work rollers 61 in a known manner. The adjusting devices for balancing and bending the work rolls 61 are accommodated in blocks 63 which are fixed to the stand, as seen in the rolling direction, in front of and behind the work rolls 61, arranged in the roll stand 62, while the thickness control is effected via the adjusting device 64.
  • Each stand 62 of the series F1-F7 has control and regulating devices 21, 22, 23, 24, 25, 26 and 27 for issuing the control commands for balancing and bending the work rolls 61, and control and regulating devices 31, 32, 33, 34 , 35, 36 and 37 for issuing the control commands for shifting the work rolls 61 in the axial direction and control and regulating devices 41, 42, 43, 44, 45, 46 and 47 for issuing the control commands for setting and regulating the thickness of the roll set 60, 61 assigned.
  • a computer 40 which calculates and monitors the control values for the entire road, is arranged in a known manner above and above the control and regulating devices for employment and thickness control 41-47 via a common control rail.
  • the control and regulating devices 51, 52, 53, 54, 55, 56 and 57 which are assigned to the respective rolling stands of the series F1-F7 as independent devices, influence for the profile control, the control devices already mentioned for balancing and bending as well as the adjustment and thickness control, ie the control and regulating device 51, the control and regulating devices 21 and 41, etc.
  • the control and regulation is carried out according to a model specification (target value) of the profile , which is given to the computers 51-57 by the computer 50 via a common setpoint rail.
  • a thickness measuring device 48 which is directly connected to the control and regulating devices for employment and thickness 41-47, the rolled profile of the strip with the profile measuring device 58 and its flatness checked with a flatness measuring device 38.
  • the profile measuring device 58 forwards the determined measurement result to the profile computer 50, which compares the actually rolled profile with the specified profile model and, if necessary, forwards corresponding correction instructions for conversion into control commands for the roll stands to the independent control and regulating devices 51-57.
  • the measurement result determined by the flatness measuring device 38 is fed to the flatness computer 30, which, if necessary, passes on corresponding correction commands to the control and regulating device 57 for the rolled profile assigned to the last stand F7, which are converted into control commands in the control and regulating devices 27 and 47 for Balancing and bending as well as adjustment and thickness control in this (last scaffold) is caused.
  • the computers 40, 50 and 30 are in turn connected to a process computer 70 which, in a known manner, can handle the large number of data which is being passed through and determined, such as thickness, width, weight, temperature, strength and profile, and the decreases, speeds and forces which occur during rolling, and furthermore compares the roll diameter and flattening as actual values with empirical target values and, if necessary, forwards corresponding correction instructions to the computers 40, 50 and 30.
  • a process computer 70 which, in a known manner, can handle the large number of data which is being passed through and determined, such as thickness, width, weight, temperature, strength and profile, and the decreases, speeds and forces which occur during rolling, and furthermore compares the roll diameter and flattening as actual values with empirical target values and, if necessary, forwards corresponding correction instructions to the computers 40, 50 and 30.
  • a profile measuring device 59 can be arranged, which is connected either alone or in addition to the already mentioned profile measuring device 58 behind the last frame F7 to the profile computer 50. If only the profile measuring device 59 is arranged behind the third stand F3, then there is a shortening and thus a more dynamic behavior of the control loop, as well as the possibility of making minor possible corrections in the stands F4-F7 following the stand F3.
  • the profile of the rolled strip is additionally measured again, as described, by a profile measuring device arranged behind the last stand F7 of the street, then a comparison of the two measuring results of the profile measuring device 59 and the profile measuring device 58 also enables conclusions to be drawn about the state of the Pull the roll stands yourself, since a comparison of the actual profiles determined by the two profile measuring devices with the specified model profile can have the result that the model profile can no longer be reached from a control point of view and the causes for this can lie in the road itself (roller wear, irregular wear, etc. ).
  • Fig. 6 shows that when such finished strips are rolled out, the cross-flow of the material (spreading) in the first two stands F1 and F2 is very large, then already decreases in stand F3, and that only in stand F4, especially in stands F5 to F7 minor corrections that do not significantly influence the profile are still possible.
  • the cheapest (or the cheapest combination among the known adjustment means) must be selected taking into account the required adjustment range.
  • the adjustment of the roll gap in the stand can be slightly corrected in order to take advantage of the material flow that is still present at right angles to the rolling direction, even with small strip thicknesses.

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  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
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Claims (8)

1. Procédé de fabrication d'une bande laminée dans lequel celle-ci passe dans un train tandem pour bandes à chaud et, pendant ce laminage, est soumise à un réglage d'ensemble qui comprend un réglage du profil de la bande et, au moins dans la dernière cage, un réglage du profil de la bande et de la planéité à partir d'une mesure de planéité de la bande laminée effectuée à sa sortie de la dernière cage du train tandem pour bandes à chaud, caractérisé en ce qu'il comprend les opérations suivantes:
a) détermination et fixation de l'épaisseur critique de la bande à laminer, au-dessous de laquelle aucune transformation essentielle de la bande laminée n'est plus possible dans le sens de sa largeur,
b) laminage de cette bande, dont l'épaisseur est nettement supérieure à la valeur critique déterminée, successivement dans un premier stade et dans un deuxième stade de laminage dans chacun desquels la bande passe dans au moins une emprise qui la transforme,
c) réduction de l'épaisseur de la bande laminée, dans le premier stade de laminage, à la valeur critique déterminée,
d) contrôle de la réduction de l'épaisseur de la bande laminée à ce stade par une mesure d'épaisseur effectuée après le premier stade et réglage d'au moins la première emprise à ce premier stade compte tenu du résultat de la mesure d'épaisseur,
e) mesure de la planéité de la bande dans le deuxième stade, au moins à un emplacement au cours de ce stade,
f) réduction de l'épaisseur de la bande, à ce deuxième stade, à une valeur inférieure à l'épaisseur critique, compte tenu du résultat de la mesure de la planéité de la bande.
2. Procédé selon la revendication 1, caractérisé en ce que la hauteur de la dernière emprise dans le premier stade de laminage est réglée après comparaison entre le résultat d'une mesure de l'épaisseur de la bande après le premier stade de laminage et une valeur standard donnée déterminée expérimentalement.
3. Procédé selon la revendication 1, caractérisé en ce que le résultat de la mesure de la planéité de la bande laminée est comparé à une valeur standard donnée déterminée expérimentalement.
4. Procédé selon la revendication 1, caractérisé en ce que l'importance de la réduction de l'épaisseur de la bande laminée pendant le premier stade de laminage est déterminée et réglée compte tenu de mesures d'épaisseur de la bande laminée pendant le deuxième stade de laminage.
5. Train tandem pour bande laminées pour la fabrication de bande laminée, dans lequel celle-ci est, pendant le laminage, soumise à un réglage d'ensemble qui comprend un réglage du profil de la bande et, dans la dernière cage, un réglage du profil de la bande et de la planéité à partir d'une mesure de planéité de la bande laminée effectuée à sa sortie de cette cage, caractérisé en ce que, dans un groupe (1 à 3) de cages de laminoirs (1, et 3) ayant une hauteur d'emprise égale ou supérieure à l'épaisseur critique (KD), au-dessous de laquelle aucune transformation essentielle de la bande laminée n'est plus possible dans le sens de sa largeur, il comporte des appareils de mesure du profil (8, 9, 10) et des appareils de réglage du profil (13, 14, 15) qui sont reliés à des dispositifs de réglage du profil de la bande montés dans les cages de laminoirs (1, 2 et 3), tandis que la dernière cage (3) de ce groupe (1, 2 et 3) et toutes les autres cages (4 et 5) comportent des dispositifs de mesure de la planéité (10', 11 et 12) et des dispositifs de réglage de la planéité (15', 16,17) qui sont reliés à des dispositifs de réglage de la planéité de la bande et en ce que la dernière cage (3) du groupe (1 à 3) peut être commandée au choix par des dispositifs de mesure du profil (10) et par des dispositifs de réglage du profil (15) ou par des dispositifs de mesure de la planéité (10') ou des dispositifs de réglage de la planéité (15').
6. Train tandem pour bandes laminées selon la revendication 5, caractérisé en ce que les dispositifs de mesure du profil (8, 9 et 10) ou les dispositifs de mesure de la planéité (10', 11, 12) sont situés après l'emprise des cages de laminoirs (1,2 et 3 ou 3,4 et 5) qui doit être réglée.
7. Train tandem pour bandes laminées pour la fabrication d'une bande laminée, dans lequel celle-ci est, pendant le laminage, soumise à un réglage d'ensemble qui comprend un réglage du profil de la bande et, dans la dernière cage, un réglage du profil de la bande et, la planéité à partir d'une mesure de planéité de la bande laminée effectuée à sa sortie de cette cage, caractérisé en ce que le train tandem pour bandes à chaud comporte n cages (F1 à F7) et, derrière la n-ième cage (F7), un dispositif de mesure de la planéité (38) et, derrière ce dispositif, un dispositif de mesure du profil (58), le dispositif de mesure de la planéité (38), associé à un calculateur de planéité (30), dont les signaux de sortie commandent des dispositifs (27, 37, 47), assurant le réglage et la courbure des cylindres de la n-ième cage (F7), le dispositif de mesure du profil (58), associé à un calculateur de profil (50), dont les signaux de sortie commandent des dispositifs (27, 37, 47), assurant le réglage et la courbure de cette cage (F7) et des n-1-ième à n-3-ième ou n-4-ième cages précédentes (F6 à F4 ou F3) et des calculateurs de planéité (30) ainsi que des calculateurs de profil (50) étant reliés à un ordinateur (70) comportant des dispositifs de comparaison et une mémoire de valeurs fixes et donnant des ordres pour les rectifications.
8. Train tandem pour bandes laminées selon une où plusieurs des revendications 5 à 7, caractérisé en ce que les organes de réglage du profil des bandes, la courbure des cylindres, le serrage des cylindres, le décalage des cylindres, le basculement des cylindres, le refroidissement par zones de la table des cylindres ainsi que le déplacement axial des cylindres de travail, des cylindres intermédiaires et des cylindres d'appui dans les premières cages peuvent être réglés individuellement et/ou simultanément.
EP84102546A 1983-03-14 1984-03-09 Procédé pour la fabrication de feuillard à chaud avec section et planéité de bande de haute qualité Expired EP0121148B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3309040 1983-03-14
DE19833309040 DE3309040A1 (de) 1983-03-14 1983-03-14 Verfahren und vorrichtung zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
DE19843401894 DE3401894A1 (de) 1984-01-20 1984-01-20 Verfahren zum herstellen von walzband mit hoher bandprofil- und bandplanheitsguete
DE3401894 1984-01-20

Publications (2)

Publication Number Publication Date
EP0121148A1 EP0121148A1 (fr) 1984-10-10
EP0121148B1 true EP0121148B1 (fr) 1989-02-15

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US (1) US4711109A (fr)
EP (1) EP0121148B1 (fr)
JP (1) JP2583481B2 (fr)
DE (1) DE3476742D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430034A1 (de) * 1984-08-16 1986-02-27 Mannesmann AG, 4000 Düsseldorf Planheitsregelung an bandwalzgeruesten
US4771622A (en) * 1986-03-12 1988-09-20 International Rolling Mill Consultants Inc. Strip rolling mill apparatus
WO1993000181A1 (fr) * 1991-06-28 1993-01-07 Siemens Aktiengesellschaft Systeme de regulation de la fabrication de feuillards lamines a chaud au moyen de laminoirs a chaud a cages multiples

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Publication number Priority date Publication date Assignee Title
JPH0626723B2 (ja) * 1986-09-24 1994-04-13 三菱電機株式会社 板材の形状制御方法
DE3806063C2 (de) * 1988-02-26 1996-10-17 Schloemann Siemag Ag Verfahren und Vorrichtung zur Steg- und Flanschdickenregelung in Universalgerüsten
DE4040360A1 (de) * 1990-12-17 1991-06-27 Siemens Ag Regelung eines mehrgeruestigen warm- und/oder kaltband-walzwerks
JP2587172B2 (ja) * 1992-09-11 1997-03-05 川崎製鉄株式会社 ホットストリップ仕上圧延機の設備配列
JP2587173B2 (ja) * 1992-10-02 1997-03-05 川崎製鉄株式会社 ホットストリップ仕上圧延機における圧延制御方法
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EP0671225B1 (fr) * 1994-03-10 1999-07-07 Kawasaki Steel Corporation Procédé pour la régulation d'un processus de laminage d'un laminoir finisseur à chaud
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Also Published As

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JPS59197309A (ja) 1984-11-08
DE3476742D1 (en) 1989-03-23
EP0121148A1 (fr) 1984-10-10
US4711109A (en) 1987-12-08
JP2583481B2 (ja) 1997-02-19

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