EP1725352A1 - Roller leveller with variable centre distance - Google Patents

Roller leveller with variable centre distance

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Publication number
EP1725352A1
EP1725352A1 EP05737040A EP05737040A EP1725352A1 EP 1725352 A1 EP1725352 A1 EP 1725352A1 EP 05737040 A EP05737040 A EP 05737040A EP 05737040 A EP05737040 A EP 05737040A EP 1725352 A1 EP1725352 A1 EP 1725352A1
Authority
EP
European Patent Office
Prior art keywords
planer
rollers
strip
roll
ratio
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.)
Granted
Application number
EP05737040A
Other languages
German (de)
French (fr)
Other versions
EP1725352B1 (en
Inventor
Jacques-Yves Bourgon
Dominique Kircher
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.)
ArcelorMittal France SA
Original Assignee
Arcelor France SA
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
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Application filed by Arcelor France SA filed Critical Arcelor France SA
Priority to SI200530400T priority Critical patent/SI1725352T1/en
Priority to PL05737040T priority patent/PL1725352T3/en
Publication of EP1725352A1 publication Critical patent/EP1725352A1/en
Application granted granted Critical
Publication of EP1725352B1 publication Critical patent/EP1725352B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • 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
    • B21B2015/0071—Levelling the rolled product

Definitions

  • the present invention relates to a planer without traction for gluing metal strips, and the planing method using said planer.
  • a metal strip or plate undergoes various operations, such as hot rolling and cold rolling, to impart consistent dimensional characteristics along its length; thus a laminated metal strip theoretically possesses at all points a constant thickness and width.
  • the rolling operation is not sufficient to obtain a band free of defects. Indeed, it may have non-developable flatness defects such as corrugations at the banks or the center, and / or developable defects such as a hanger or a tile, ie a curvature respectively depending on the length, depending on the width of the band. These flatness defects can be corrected by planing the web in a roller planer.
  • Such a planer consists of two superimposed cassettes each supporting several motorized rollers of constant diameter, offset relative to each other, and arranged alternately above and below the path of the strip.
  • This type of planer is configured, in terms of number of rollers, roll diameter, center distance and adjustment, so as to satisfactorily plan strips whose thickness is within a defined range.
  • the centers between the rollers are constant and are adjusted so that the ratio of roll diameter to center distance is from about 0.90 to about 0.95.
  • efforts and planing couples are important. In order to reduce them, the manufacturers have developed planers in which all the distances are increased so that the ratio between the diameter and the center distance is of the order of 0.70 to 0.80.
  • the present invention therefore aims to provide a planer in which the efforts and the planing torque are reduced compared to those of a conventional planer, while maintaining a good correction of flatness over the entire range of the planer, and by facilitating the control of the hanger and the tile.
  • the planer according to the invention may furthermore have the following characteristics: n ⁇ 8, - when the thickness of the strip to be hovered is between 0.5 and 3 mm, 14 ⁇ n ⁇ 22, - when the thickness of the glide strip is between 3 and 15 mm, 10 ⁇ n ⁇ 16, for k: 1 to x, 0.90 ⁇ R / Ek ⁇ 0.95, and for k: (x + 1) to n, 0.70 ⁇ R / Ek ⁇ 0.80.
  • the subject of the invention is also a method for flattening a metal strip, in particular a steel strip, in which this planer is used with a plasticization ratio greater than or equal to 60% and less than or equal to 90%.
  • the invention consists in proposing a planing machine in which at least the first five rollers from the entry of the planer have a center to center ratio identical to that of conventional planers, at least the last five rollers from the entrance of the planer have a center-to-spoke ratio close to that of a stripper, and wherein the distance between the intermediate rollers of the planer is advantageously increased.
  • FIG. 1 shows a diagrammatic cross-sectional view of a multi-roll planer without traction according to the invention
  • FIG. 2 shows a design curve of the residual hanger of a flat metal strip, as a function of the output clamping force of the planer, for a plasticization ratio of 60%
  • FIG. 3 shows a curve for calculating the residual hanger of a flat metal strip, as a function of the output clamping force of the leveler, for a plasticization ratio of 80%.
  • FIG. 1 diagrammatically shows a planer 1 comprising two superimposed cassettes 2.3 and supporting each of the motorized rollers 4,4 'of constant radius R.
  • each cassette 2,3 must support at least n / 2 rolls 4,4 'and more precisely for a planer 1 having n + 1 rollers 4,4' the lower cassette 2 has (n / 2 ) +1 rolls 4 and the upper cassette 3 has n / 2 rolls 4 '.
  • each of the rollers 4,4 'of a given cassette 2,3 is separated from the axis of the roll 4,4' immediately successive of the other cassette by a distance Ek which can be variable.
  • Ek which can be variable.
  • the inventors have demonstrated that a reduction in the ratio of radius on the center distance between the rollers to a value of about 0.8, starting from the fifth roll from the entry of the planer, in a planer whose ratio radius on center distance between at least the first five rollers from the entry of the planer corresponded to the ratio radius on the center distance of a conventional planer, efforts and planing pairs could be reduced by 5 to 25% depending on the type of adjustment made.
  • the ratio R / Ek is equal to the ratio R / E1, in which E1 corresponds to the center distance between the first roll from the planer entry and the second roll from the planer entry, R / E1 being between 0.90 and 0.95, included terminals, values which correspond to the ratio radius on center distance of a conventional planer.
  • the ratio R / Ek is equal to the ratio R / En, in which En corresponds to center distance between the last roll from the planer inlet and the first-to-last roll from the planer inlet, R / F being between 0.70 and 0.80, including correspond to the ratio of radius to center distance of a conventional stripper.
  • the ratio R / E1 is always greater than the ratio R / En.
  • the inventors have found an increase in the number of operating points using a planer according to the invention, compared to a conventional planer having the same number of rollers.
  • the number of operating points of a planer is determined by the adjustment to be made on the planer to obtain, at the output of the planer, a band having a zero hanger and a null tile.
  • the greater the number of operating points for a given leveler the lower the stress at the settings. This represents an additional advantage because the duration of the adjustment of the planer according to the invention will be reduced.
  • the ratio R / Ek is equal to the ratio R / E1, to the accuracy near the adjustments of distance between the rollers, for at least the five first rolls from the entrance of the planer.
  • the planer comprises more than nine rolls, that is to say n greater than or equal to 8, to allow good correction of both defects not developable as developable defects. Indeed, under nine rollers, it becomes difficult to control the developable defects, and the sheet can retain a tile and a hanger residual.
  • the planer comprises between 15 and 23 (inclusive), that is to say 14 ⁇ n ⁇ 22.
  • the planer advantageously comprises between 11 and 17 rolls, that is to say 10 ⁇ n ⁇ 16.
  • the planer is divided into two zones.
  • a first zone is thus between the first roll from the entry of the planer and the roll (x + 1) from the entry of the planer, that is to say when k varies from to x, and extends at least up to the fifth roll from the entrance of the planer.
  • the ratio radius on center distance R / Ek is constant and between 0.90 and 0.95 (inclusive).
  • the second zone is between the roll (x + 1) from the input of the leveler and the last roll from the input of the leveler which is the roll (n + 1), ie when k varies from (x + 1) to n, and starts at least from roll n-3 from the input of the planer.
  • the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (including terminals).
  • the planer is divided into three zones.
  • a first zone is comprised, as in the first embodiment, between the first roller from the entrance of the planer and the roller (x + 1) from the entrance of the planer, ie when k varies from 1 to x, and extends at least to the fifth roll from the entrance of the planer.
  • the ratio radius on center distance R / Ek is constant and between 0.90 and 0.95 (limits included).
  • a second zone in which one of the reports radius on center distance, which will be called R / Ex is between 0.80 and 0.90 (inclusive).
  • This second area is between the fifth roll from the planer entry and the roll (n-4) from the planer entry, ie when x varies from 5 to (n- 4).
  • a third area is located between the roll (x + 1) from the input and the last roll of the planer (roll (n + 1)), ie when k varies from (x + 1) ) to n.
  • the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (inclusive).
  • the planer is also divided into three zones.
  • a first zone is understood, as in the previous embodiments, between the first roll from the entry of the planer and the roll (x + 1) from the entry of the planer, ie when k varies from 1 to x, and extends at least to the fifth roll from the entrance of the planer.
  • the radius-to-center ratio R / Ek is between 0.90 and 0.95 (including terminals).
  • This second area is between the fifth roll from the planer entry and the roll (n-4) from the planer entry, ie when x varies from 5 to (n- 4).
  • a third zone is located between the roll (x + 2) from the planer entry and the last roll of the planer (roll (n + 1)), ie when k varies from (x +2) to n.
  • the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (inclusive).
  • the invention also relates to a method for gliding a metal strip in which one of the planers described above is used with a plastification rate equal to or greater than 60% and equal to or less than 90%.
  • the plasticization rate of a metal strip is defined as the thickness of the plasticized metal strip over the total thickness.
  • the metal strip to be hovered may be steel, ordinary or stainless, coated with a metal coating for example based on zinc or an organic coating.
  • a conventional leveling machine designated by X planer, comprising (k + 1) rolls with k equal to 16, or seventeen rolls, diameter 57 mm and constant center distance Ek 30 mm (BRONX type planer), thus having a ratio radius on constant center distance R / Ek of 0.95, has been modi1.ee to obtain different planers according to the invention, namely:
  • FIGS. 2 and 3 show a calculation curve of the residual hanger of the flat steel strip, as a function of the output clamping force of the leveler, for a plasticization rate of 60% (FIG. 2) and a plasticizing rate of 80% ( Figure 3).
  • the different planers are marked by the. following symbols: - leveler A: symbol u, - leveler B: reference A, - leveler C: symbol X, and - planer X: symbol *.
  • Table 1 gain on forces and torque and number of operating points, at 60% plasticization rate
  • the planeuse A is the planeuse which makes it possible to obtain the biggest gains in effort and couple, and whatever the rate of plasticization.
  • this planer is not necessarily the most reliable if it is desired to give the sheet a perfectly zero hanger, since, especially when the rate of plasticization is 60 %, the number of operating points is 1, while it is 9 for the leveler C.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Feeding And Guiding Record Carriers (AREA)
  • Pinball Game Machines (AREA)
  • Earth Drilling (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Finger-Pressure Massage (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Body Suspensions (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Soil Working Implements (AREA)

Abstract

Tractionless planishing machine has at least the first five rollers from the inlet with an inter-axis relationship on a radius identical to that of a conventional planishing machine and at least the last five rollers from the inlet with an inter-axis relationship on a radius close to that of a bending machine. The inter-axis relationship between the intermediate rollers is advantageously augmented. An independent claim is also included for: the planishing of metal strip using this planishing machine.

Description

Planeuse à entraxe variable Variable spacing planer
La présente invention concerne une planeuse sans traction destinée à planer des bandes métalliques, et le procédé de planage utilisant ladite planeuse. Une bande métallique ou une plaque subit diverses opérations, telles que le laminage à chaud et le laminage à froid, destinées à lui conférer des caractéristiques dimensionnelles homogènes sur toute sa longueur ; ainsi une bande métallique laminée possède théoriquement en tout point une épaisseur et une largeur constante. Cependant l'opération de laminage ne suffit pas pour obtenir une bande exempte de défaut. En effet, celle-ci peut présenter des défauts de planéité non développables tels que des ondulations au niveau des rives ou du centre, et/ou des défauts développables tels qu'un cintre ou une tuile, c'est à dire une courbure respectivement soit selon la longueur, soit selon la largeur de la bande. Ces défauts de planéité peuvent être corrigés par planage de la bande dans une planeuse à rouleaux. Une telle planeuse est constituée de deux cassettes superposées supportant chacune plusieurs rouleaux motorisés, de diamètre constant, décalés les uns par rapport aux autres, et disposés en alternance au-dessus et en dessous du parcours de la bande. Ce type de planeuse est configurée, en termes de nombre de rouleaux, de diamètre de rouleaux, d'entraxe et de réglage, de manière à planer de manière satisfaisante des bandes dont l'épaisseur est comprise dans une gamme définie. Dans une planeuse conventionnelle, les entraxes entres les rouleaux sont constants et sont réglés de manière à ce que le rapport entre le diamètre des rouleaux et l'entraxe soit compris entre environ 0,90 et environ 0,95. Cependant, dans ce type de planeuse, les efforts et les couples de planage sont importants. En vue de les réduire, les constructeurs ont développé des planeuses dans lesquelles l'ensemble des entraxes sont augmentés pour que le rapport entre le diamètre et l'entraxe soit de l'ordre de 0,70 à 0,80. Or, cela ne permet plus de corriger les défauts non développables sur l'ensemble de la gamme de la planeuse en terme d'épaisseur de bande, et en particulier sur les bandes de plus fine épaisseur. Les constructeurs ont également proposé d'escamoter une partie des rouleaux, et de passer par exemple de neuf à cinq rouleaux. Mais, lorsque le nombre de rouleaux utiles est réduit, les variations de taux de plastification à l'intérieur de la planeuse sont brutales, et il devient difficile de maîtriser les défauts développables. La présente invention a donc pour but de proposer une planeuse dans laquelle les efforts et les couples de planage sont réduits par rapport à ceux d'une planeuse conventionnelle, tout en maintenant une bonne correction de la planéité sur toute la gamme de la planeuse, et en facilitant la maîtrise du cintre et de la tuile. A cet effet, l'invention a pour objet une planeuse sans traction destinée à planer des bandes métalliques, ayant une entrée et une sortie, comportant n+1 rouleaux, du type comprenant deux cassettes superposées supportant chacune au moins n/2 rouleaux motorisés de rayon R constant, décalés les uns par rapport aux autres et disposés en alternance au-dessus et en dessous du parcours de la bande, l'axe de chacun des rouleaux d'une cassette étant séparé de l'axe du rouleau immédiatement successif de l'autre cassette par un entraxe Ek, dans laquelle : pour k : 2 à 4, (R/Ek) = (R/E1), pour k : n-3 à n, (R/Ek ) = (R/En), (R/En) < (R/E1), et pour k : 5 à (n-1), (R/En) < (R/Ek) ≤ (R/E1), et (R/Ek) < (R/E(k+1)), ladite planeuse comprenant éventuellement des moyens de réglages des entraxes Ek.The present invention relates to a planer without traction for gluing metal strips, and the planing method using said planer. A metal strip or plate undergoes various operations, such as hot rolling and cold rolling, to impart consistent dimensional characteristics along its length; thus a laminated metal strip theoretically possesses at all points a constant thickness and width. However, the rolling operation is not sufficient to obtain a band free of defects. Indeed, it may have non-developable flatness defects such as corrugations at the banks or the center, and / or developable defects such as a hanger or a tile, ie a curvature respectively depending on the length, depending on the width of the band. These flatness defects can be corrected by planing the web in a roller planer. Such a planer consists of two superimposed cassettes each supporting several motorized rollers of constant diameter, offset relative to each other, and arranged alternately above and below the path of the strip. This type of planer is configured, in terms of number of rollers, roll diameter, center distance and adjustment, so as to satisfactorily plan strips whose thickness is within a defined range. In a conventional planer, the centers between the rollers are constant and are adjusted so that the ratio of roll diameter to center distance is from about 0.90 to about 0.95. However, in this type of planeuse, efforts and planing couples are important. In order to reduce them, the manufacturers have developed planers in which all the distances are increased so that the ratio between the diameter and the center distance is of the order of 0.70 to 0.80. However, this no longer makes it possible to correct the non-developable defects on the entire range of the leveler in terms of strip thickness, and in particular on the strips of thinner thickness. The manufacturers have also proposed to retract part of the rollers, and to go for example from nine to five rolls. But, when the number of useful rollers is reduced, the variations in the rate of plasticization inside the planer are abrupt, and it becomes difficult to control the developable defects. The present invention therefore aims to provide a planer in which the efforts and the planing torque are reduced compared to those of a conventional planer, while maintaining a good correction of flatness over the entire range of the planer, and by facilitating the control of the hanger and the tile. To this end, the subject of the invention is a non-traction planer intended to glide metal strips, having an inlet and an outlet, comprising n + 1 rollers, of the type comprising two superimposed cassettes each supporting at least n / 2 motorized rollers of constant radius R, offset relative to each other and arranged alternately above and below the path of the strip, the axis of each of the rollers of a cassette being separated from the axis of the immediately following roll of the another cassette by a center distance Ek, wherein: for k: 2 to 4, (R / Ek) = (R / E1), for k: n-3 to n, (R / Ek) = (R / En) , (R / En) <(R / E1), and for k: 5 to (n-1), (R / En) <(R / Ek) ≤ (R / E1), and (R / Ek) < (R / E (k + 1)), said planer optionally comprising means for adjusting the distances Ek.
La planeuse selon l'invention peut en outre présenter les caractéristiques suivantes : - n ≥ 8, - lorsque l'épaisseur de la bande à planer est comprise entre 0,5 et 3 mm, 14 < n < 22, - lorsque l'épaisseur de la bande à planer est comprise entre 3 et 15 mm, 10 < n < 16, - pour k : 1 à x, 0,90 < R/Ek < 0,95, et pour k : (x+1) à n, 0,70 < R/Ek < 0,80. - pour k : 1 à x, 0,90 < R/Ek < 0,95, l'un des entraxes Ex, avec 5 < x ≤ n-4, étant tel que : 0,80 < R/Ex < 0,90, et pour k : (x+1) à n, 0,70 < R/Ek < 0,80. - pour k : 1 à x, 0,90 < R/Ek < 0,95, l'un des entraxes Ex, avec 5 ≤ x ≤ n-4, étant tel que : 0,80 < R/Ex < 0,90, et 0,75 < R/E(x+1) < 0,85, et pour k : (x+2) à n, 0,70 < R/Ek < 0,80. L'invention a également pour objet un procédé de planage d'une bande métallique, en particulier une bande en acier, dans lequel on utilise cette planeuse avec un taux de plastification supérieur ou égal à 60 %, et inférieur ou égal à 90 %. Comme on l'aura compris, l'invention consiste à proposer une planeuse dans laquelle au moins les cinq premiers rouleaux à partir de l'entrée de la planeuse ont un rapport entraxe sur rayon identique à celui des planeuses classiques, au moins les cinq derniers rouleaux à partir de l'entrée de la planeuse ont un rapport entraxe sur rayon proche de celui d'une décintreuse, et dans laquelle l'entraxe entre les rouleaux intermédiaires de la planeuse est avantageusement augmenté. Les caractéristiques et avantages de la présente invention apparaîtront mieux au cours de la description qui va suivre, donnée à titre d'exemple non limitatif, en référence aux figures annexées sur lesquelles : - la figure 1 présente une vue schématique en coupe transversale d'une planeuse multirouleaux sans traction selon l'invention, - la figure 2 présente une courbe de calcul du cintre résiduel d'une bande métallique planée, en fonction du serrage de sortie de la planeuse, pour un taux de plastification de 60 %, et - la figure 3 présente une courbe de calcul du cintre résiduel d'une bande métallique planée, en fonction du serrage de sortie de la planeuse, pour un taux de plastification de 80 %. Sur la figure 1, on a représenté schématiquement une planeuse 1 comprenant deux cassettes 2,3 superposées et supportant chacune des rouleaux motorisés 4,4' de rayon R constant. Pour planer une bande métallique 5, on fait défiler cette bande 5 entre les rouleaux 4,4' et on définit ainsi une entrée de planeuse correspondant à l'entrée de la bande 5 dans la planeuse 1 , et une sortie de planeuse correspondant à la sortie de la bande 5 hors de la planeuse 1. Les rouleaux 4,4' sont positionnés de manière décalée les uns par rapport aux autres, et disposés en alternance au-dessus et en dessous du parcours d'une bande métallique 5. Pour obtenir un planage correct de la bande 5, chaque cassette 2,3 doit supporter au moins n/2 rouleaux 4,4' et plus précisément pour une planeuse 1 comportant n+1 rouleaux 4,4' la cassette inférieure 2 comporte (n/2)+1 rouleaux 4 et la cassette supérieure 3 comporte n/2 rouleaux 4'. L'axe de chacun des rouleaux 4,4' d'une cassette 2,3 donnée est séparée de l'axe du rouleau 4,4' immédiatement successif de l'autre cassette par un entraxe Ek qui peut être variable. Pour obtenir une bande 5 planée avec un cintre nul, il est nécessaire de régler l'écartement des rouleaux 4 de la cassette inférieure 2 par rapport aux rouleaux 4' de la cassette supérieure 3 situés en sortie de la planeuse 1 , c'est à dire de régler le serrage d'entrée et le serrage de sortie de la planeuse 1. Afin d'adapter le réglage en fonction du type de bande 5 à planer, on peut faire varier l'entraxe Ek à l'aide de moyens de réglage non représentés. Les inventeurs ont mis en évidence qu'une diminution du rapport rayon sur entraxe entre les rouleaux jusqu'à une valeur de l'ordre de 0,8, à partir du cinquième rouleau à partir de l'entrée de la planeuse, dans une planeuse dont le rapport rayon sur entraxe entre au moins les cinq premiers rouleaux à partir de l'entrée de la planeuse correspondait au rapport rayon sur entraxe d'une planeuse classique, les efforts et couples de planage pouvaient être réduits de 5 à 25 % selon le type de réglage effectué. Ainsi, pour les cinq premiers rouleaux à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de 2 à 4, le rapport R/Ek est égal au rapport R/E1 , dans lequel E1 correspond à l'entraxe entre le premier rouleau à partir de l'entrée de la planeuse et le deuxième rouleau à partir de l'entrée de la planeuse, R/E1 étant compris entre 0,90 et 0,95, bornes incluses, valeurs qui correspondent au rapport rayon sur entraxe d'une planeuse classique. Pour les cinq derniers rouleaux à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de n-3 à n, le rapport R/Ek est égal au rapport R/En, dans lequel En correspond à l'entraxe entre le dernier rouleau à partir de l'entrée de la planeuse et l'avant-demier rouleau à partir de l'entrée de la planeuse, R/En étant compris entre 0,70 et 0,80, bornes incluses, valeurs qui correspondent au rapport rayon sur entraxe d'une décintreuse classique. Ainsi, dans la planeuse selon l'invention, il est clair que le rapport R/E1 est toujours supérieur au rapport R/En. En outre, il convient également qu'entre le cinquième rouleau à partir de l'entrée et le rouleau n-1 à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de 5 à n-1 , on ait les relations suivantes : (R/En) < (R/Ek) ≤ (R/E1), et (R/Ek) < (R/E(k+1)). Ces conditions permettent de réduire les efforts exercés sur les rouleaux, de diminuer le couple nécessaire au planage. Ainsi pour un résultat équivalent en terme de planage, la puissance de la planeuse selon l'invention sera de 15 à 20 % inférieure à la puissance d'une planeuse conventionnelle. En outre, les inventeurs ont constaté une augmentation du nombre de points de fonctionnement en utilisant une planeuse selon l'invention, par rapport à une planeuse conventionnelle possédant le même nombre de rouleaux. Le nombre de points de fonctionnement d'une planeuse est déterminé par le réglage à effectuer sur la planeuse pour obtenir, en sortie de la planeuse, une bande présentant un cintre nul et une tuile nulle. Ainsi, plus le nombre de points de fonctionnement pour une planeuse donnée est important, plus la contrainte au niveau des réglages est faible. Ceci représente donc un avantage supplémentaire, car la durée du réglage de la planeuse selon l'invention va pouvoir être réduite. Pour obtenir une bonne correction des défauts non développables de planéité de la bande, il est indispensable que le rapport R/Ek soit égal au rapport R/E1 , à la précision près des réglages d'entraxe entre les rouleaux, pour au moins les cinq premiers rouleaux à partir de l'entrée de la planeuse. De préférence, la planeuse comporte plus de neufs rouleaux, c'est à dire n supérieur ou égal à 8, pour permettre une bonne correction tant des défauts non développables que des défauts développables. En effet, en dessous de neuf rouleaux, il devient difficile de maîtriser les défauts développables, et la tôle pourra conserver une tuile et un cintre résiduels. Avantageusement, pour faciliter les réglages et pour obtenir une bonne correction de tous les défauts de planéité d'une bande métallique dans une gamme d'épaisseur comprise entre 0,7 et 3 mm, la planeuse comporte entre 15 et 23 (bornes incluses), c'est à dire 14 ≤ n ≤ 22. Lorsque la bande métallique est dans une gamme d'épaisseur comprise entre 3 et 15 mm, la planeuse comporte avantageusement entre 11 et 17 rouleaux, c'est à dire 10 < n < 16. Selon la qualité de résolution des défauts de planéité et la recherche de gain en effort et en couple de planage, les inventeurs ont mis au point différent types de planeuse, que nous allons décrire. Selon un premier mode de réalisation de l'invention, la planeuse se divise en deux zones. Une première zone est ainsi comprise entre le premier rouleau à partir de l'entrée de la planeuse et le rouleau (x+1) à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de à x, et s'étend au moins jusqu'au cinquième rouleau à partir de l'entrée de la planeuse. Dans cette première zone, le rapport rayon sur entraxe R/Ek est constant et compris entre 0,90 et 0,95 (bornes comprises). La deuxième zone est comprise entre le rouleau (x+1) à partir de l'entré de la planeuse et le dernier rouleau à partir de l'entrée de la planeuse qui est le rouleau (n+1), c'est à dire lorsque k varie de (x+1) à n, et débute au moins à partir du rouleau n-3 à partir de l'entré de la planeuse. Dans cette zone, le rapport rayon sur entraxe R/Ek est constant et compris entre 0,70 et 0,80 (bornes comprises).The planer according to the invention may furthermore have the following characteristics: n ≥ 8, - when the thickness of the strip to be hovered is between 0.5 and 3 mm, 14 <n <22, - when the thickness of the glide strip is between 3 and 15 mm, 10 <n <16, for k: 1 to x, 0.90 <R / Ek <0.95, and for k: (x + 1) to n, 0.70 <R / Ek <0.80. for k: 1 to x, 0.90 <R / Ek <0.95, one of the distances Ex, with 5 <x ≤ n-4, being such that: 0.80 <R / Ex <0, 90, and for k: (x + 1) at n, 0.70 <R / Ek <0.80. for k: 1 to x, 0.90 <R / Ek <0.95, one of the centers Ex, with 5 ≤ x ≤ n-4, being such that: 0.80 <R / Ex <0, 90, and 0.75 <R / E (x + 1) <0.85, and for k: (x + 2) at n, 0.70 <R / Ek <0.80. The subject of the invention is also a method for flattening a metal strip, in particular a steel strip, in which this planer is used with a plasticization ratio greater than or equal to 60% and less than or equal to 90%. As will be understood, the invention consists in proposing a planing machine in which at least the first five rollers from the entry of the planer have a center to center ratio identical to that of conventional planers, at least the last five rollers from the entrance of the planer have a center-to-spoke ratio close to that of a stripper, and wherein the distance between the intermediate rollers of the planer is advantageously increased. The features and advantages of the present invention will become more apparent from the following description, given by way of nonlimiting example, with reference to the appended figures in which: FIG. 1 shows a diagrammatic cross-sectional view of a multi-roll planer without traction according to the invention; FIG. 2 shows a design curve of the residual hanger of a flat metal strip, as a function of the output clamping force of the planer, for a plasticization ratio of 60%, and FIG. 3 shows a curve for calculating the residual hanger of a flat metal strip, as a function of the output clamping force of the leveler, for a plasticization ratio of 80%. FIG. 1 diagrammatically shows a planer 1 comprising two superimposed cassettes 2.3 and supporting each of the motorized rollers 4,4 'of constant radius R. To glide a metal strip 5, this strip 5 is passed between the rollers 4,4 'and a planer inlet corresponding to the entrance of the strip 5 in the planer 1 is thus defined, and a planer output corresponding to the leaving the strip 5 out of the leveler 1. The rollers 4,4 'are positioned offset from each other, and arranged alternately above and below the path of a metal strip 5. To obtain a correct leveling of the band 5, each cassette 2,3 must support at least n / 2 rolls 4,4 'and more precisely for a planer 1 having n + 1 rollers 4,4' the lower cassette 2 has (n / 2 ) +1 rolls 4 and the upper cassette 3 has n / 2 rolls 4 '. The axis of each of the rollers 4,4 'of a given cassette 2,3 is separated from the axis of the roll 4,4' immediately successive of the other cassette by a distance Ek which can be variable. To obtain a flat strip 5 with a null hanger, it is necessary to adjust the spacing of the rollers 4 of the lower cassette 2 with respect to the rollers 4 'of the upper cassette 3 located at the output of the planer 1, it is necessary to ie to adjust the input clamping and the output clamping of the leveling machine 1. In order to adapt the adjustment according to the type of band 5 to be hung, it is possible to vary the center distance Ek by means of adjustment means not shown. The inventors have demonstrated that a reduction in the ratio of radius on the center distance between the rollers to a value of about 0.8, starting from the fifth roll from the entry of the planer, in a planer whose ratio radius on center distance between at least the first five rollers from the entry of the planer corresponded to the ratio radius on the center distance of a conventional planer, efforts and planing pairs could be reduced by 5 to 25% depending on the type of adjustment made. Thus, for the first five rollers from the input of the planer, that is to say when k varies from 2 to 4, the ratio R / Ek is equal to the ratio R / E1, in which E1 corresponds to the center distance between the first roll from the planer entry and the second roll from the planer entry, R / E1 being between 0.90 and 0.95, included terminals, values which correspond to the ratio radius on center distance of a conventional planer. For the last five rolls from the entrance of the planer, that is to say when k varies from n-3 to n, the ratio R / Ek is equal to the ratio R / En, in which En corresponds to center distance between the last roll from the planer inlet and the first-to-last roll from the planer inlet, R / F being between 0.70 and 0.80, including correspond to the ratio of radius to center distance of a conventional stripper. Thus, in the planer according to the invention, it is clear that the ratio R / E1 is always greater than the ratio R / En. Furthermore, it is also appropriate that between the fifth roll from the input and the roll n-1 from the input of the planer, ie when k varies from 5 to n-1, have the following relations: (R / En) <(R / Ek) ≤ (R / E1), and (R / Ek) <(R / E (k + 1)). These conditions make it possible to reduce the forces exerted on the rollers, to reduce the torque necessary for planing. Thus for an equivalent result in terms of planing, the power of the planer according to the invention will be 15 to 20% lower than the power of a conventional planer. In addition, the inventors have found an increase in the number of operating points using a planer according to the invention, compared to a conventional planer having the same number of rollers. The number of operating points of a planer is determined by the adjustment to be made on the planer to obtain, at the output of the planer, a band having a zero hanger and a null tile. Thus, the greater the number of operating points for a given leveler, the lower the stress at the settings. This represents an additional advantage because the duration of the adjustment of the planer according to the invention will be reduced. In order to obtain a correct correction of the non-developable defects of the flatness of the strip, it is essential that the ratio R / Ek is equal to the ratio R / E1, to the accuracy near the adjustments of distance between the rollers, for at least the five first rolls from the entrance of the planer. Preferably, the planer comprises more than nine rolls, that is to say n greater than or equal to 8, to allow good correction of both defects not developable as developable defects. Indeed, under nine rollers, it becomes difficult to control the developable defects, and the sheet can retain a tile and a hanger residual. Advantageously, to facilitate the adjustments and to obtain a good correction of all flatness defects of a metal strip in a thickness range between 0.7 and 3 mm, the planer comprises between 15 and 23 (inclusive), that is to say 14 ≤ n ≤ 22. When the metal strip is in a thickness range of between 3 and 15 mm, the planer advantageously comprises between 11 and 17 rolls, that is to say 10 <n <16. According to the quality of resolution of flatness defects and the search for gain in effort and in planing torque, the inventors have developed different types of planer, which we will describe. According to a first embodiment of the invention, the planer is divided into two zones. A first zone is thus between the first roll from the entry of the planer and the roll (x + 1) from the entry of the planer, that is to say when k varies from to x, and extends at least up to the fifth roll from the entrance of the planer. In this first zone, the ratio radius on center distance R / Ek is constant and between 0.90 and 0.95 (inclusive). The second zone is between the roll (x + 1) from the input of the leveler and the last roll from the input of the leveler which is the roll (n + 1), ie when k varies from (x + 1) to n, and starts at least from roll n-3 from the input of the planer. In this zone, the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (including terminals).
Selon un deuxième mode de réalisation de l'invention, la planeuse se divise en trois zones. Une première zone est comprise, comme dans le premier mode de réalisation, entre le premier rouleau à partir de l'entrée de la planeuse et le rouleau (x+1) à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de 1 à x, et s'étend au moins jusqu'au cinquième rouleau à partir de l'entrée de la planeuse. Dans cette zone, le rapport rayon sur entraxe R/Ek est constant et compris entre 0,90 et 0,95 (bornes comprises). Ensuite, une deuxième zone dans laquelle l'un des rapports rayon sur entraxe, que l'on nommera R/Ex, est compris entre 0,80 et 0,90 (bornes comprises). Cette deuxième zone est comprise entre le cinquième rouleau à partir de l'entrée de la planeuse et le rouleau (n-4) à partir de l'entrée de la planeuse, c'est à dire lorsque x varie de 5 à (n-4). Enfin, une troisième zone est située entre le rouleau (x+1) à partir de l'entrée et le dernier rouleau de la planeuse (rouleau (n+1)), c'est à dire lorsque k varie de (x+1) à n. Dans cette troisième zone, le rapport rayon sur entraxe R/Ek est constant et compris entre 0,70 et 0,80 (bornes comprises).According to a second embodiment of the invention, the planer is divided into three zones. A first zone is comprised, as in the first embodiment, between the first roller from the entrance of the planer and the roller (x + 1) from the entrance of the planer, ie when k varies from 1 to x, and extends at least to the fifth roll from the entrance of the planer. In this zone, the ratio radius on center distance R / Ek is constant and between 0.90 and 0.95 (limits included). Then, a second zone in which one of the reports radius on center distance, which will be called R / Ex, is between 0.80 and 0.90 (inclusive). This second area is between the fifth roll from the planer entry and the roll (n-4) from the planer entry, ie when x varies from 5 to (n- 4). Finally, a third area is located between the roll (x + 1) from the input and the last roll of the planer (roll (n + 1)), ie when k varies from (x + 1) ) to n. In this third zone, the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (inclusive).
Selon un troisième mode de réalisation de l'invention, la planeuse se divise également en trois zones. Une première zone est comprise, comme dans les modes de réalisation précédents, entre le premier rouleau à partir de l'entrée de la planeuse et le rouleau (x+1) à partir de l'entrée de la planeuse, c'est à dire lorsque k varie de 1 à x, et s'étend au moins jusqu'au cinquième rouleau à partir de l'entrée de la planeuse. Dans cette zone, le rapport rayon sur entraxe R/Ek est compris entre 0,90 et 0,95 (bornes comprises). Ensuite, une deuxième zone dans laquelle l'un des rapports rayon sur entraxe, que l'on nommera R/Ex, est compris entre 0,80 et 0,90 (bornes comprises), et le rapport rayon sur entraxe R/E(x+1) est compris entre 0,75 et 0,85 (bornes comprises). Cette deuxième zone est comprise entre le cinquième rouleau à partir de l'entrée de la planeuse et le rouleau (n-4) à partir de l'entrée de la planeuse, c'est à dire lorsque x varie de 5 à (n-4). Enfin, une troisième zone est située entre le rouleau (x+2) à partir de l'entrée de planeuse et le dernier rouleau de la planeuse (rouleau (n+1)), c'est à dire lorsque k varie de (x+2) à n. Dans cette troisième zone, le rapport rayon sur entraxe R/Ek est constant et compris entre 0,70 et 0,80 (bornes comprises).According to a third embodiment of the invention, the planer is also divided into three zones. A first zone is understood, as in the previous embodiments, between the first roll from the entry of the planer and the roll (x + 1) from the entry of the planer, ie when k varies from 1 to x, and extends at least to the fifth roll from the entrance of the planer. In this zone, the radius-to-center ratio R / Ek is between 0.90 and 0.95 (including terminals). Then, a second zone in which one of the radius-to-center ratios, which will be called R / Ex, is between 0.80 and 0.90 (including terminals), and the radius ratio on the R / E distance ( x + 1) is between 0.75 and 0.85 (inclusive). This second area is between the fifth roll from the planer entry and the roll (n-4) from the planer entry, ie when x varies from 5 to (n- 4). Finally, a third zone is located between the roll (x + 2) from the planer entry and the last roll of the planer (roll (n + 1)), ie when k varies from (x +2) to n. In this third zone, the radius-to-center ratio R / Ek is constant and lies between 0.70 and 0.80 (inclusive).
L'invention concerne également un procédé pour planer une bande métallique dans lequel une des planeuses décrites précédemment est utilisée avec un taux de plastification égal ou supérieur à 60 % et égal ou inférieur à 90 %. On définit le taux de plastification d'une bande métallique comme étant l'épaisseur de la bande métallique plastifiée sur l'épaisseur totale. Ainsi, si le taux de plastification est inférieur à 60 %, il n'est plus possible de remédier aux défauts de planéité de la bande. En revanche, si ce taux est supérieur à 90 %, la bande métallique devient difficile à planer, et dans ce cas il est également difficile de remédier aux défauts de planéité de la bande. La bande métallique à planer peut être en acier, ordinaire ou inoxydable, revêtue d'un revêtement métallique par exemple à base de zinc ou d'un revêtement organique.The invention also relates to a method for gliding a metal strip in which one of the planers described above is used with a plastification rate equal to or greater than 60% and equal to or less than 90%. The plasticization rate of a metal strip is defined as the thickness of the plasticized metal strip over the total thickness. Thus, if the plastification rate is less than 60%, it is no longer possible to remedy the flatness defects of the strip. On the other hand, if this ratio is greater than 90%, the metal strip becomes difficult to glide, and in this case it is also difficult to remedy the flatness defects of the strip. The metal strip to be hovered may be steel, ordinary or stainless, coated with a metal coating for example based on zinc or an organic coating.
L'invention va à présent être illustrée par des exemples donnés à titre indicatif, et non limitatif.The invention will now be illustrated by examples given for information only, and not limiting.
Une planeuse conventionnelle, désignée par planeuse X, comprenant (k+1) rouleaux avec k égal à 16, soit dix-sept rouleaux, de diamètre 57 mm et d'entraxe Ek constant 30 mm (planeuse type BRONX), ayant donc un rapport rayon sur entraxe R/Ek constant de 0,95, a été modi1.ee pour obtenir différentes planeuses conformes à l'invention, à savoir :A conventional leveling machine, designated by X planer, comprising (k + 1) rolls with k equal to 16, or seventeen rolls, diameter 57 mm and constant center distance Ek 30 mm (BRONX type planer), thus having a ratio radius on constant center distance R / Ek of 0.95, has been modi1.ee to obtain different planers according to the invention, namely:
Planeuse A : pour k : 1 à 4, R/Ek = 0,95, et pour k : 5 à 16, R/Ek = 0,80.Planer A: for k: 1 to 4, R / Ek = 0.95, and for k: 5 to 16, R / Ek = 0.80.
Planeuse B : pour k : 1 à 4, R/Ek = 0,95, pour k = 5, R/Ek = 0,865, et pour k : 6 à 16, R/Ek = 0,80. Planeuse C : pour k : 1 à 4, R/Ek = 0,95, pour k = 5, R/Ek = 0,90, et R/E(k+1) = 0,85, et pour k : 7 à 16, R/Ek = 0,80.Planer B: for k: 1 to 4, R / Ek = 0.95, for k = 5, R / Ek = 0.865, and for k: 6 to 16, R / Ek = 0.80. Planer C: for k: 1 to 4, R / Ek = 0.95, for k = 5, R / Ek = 0.90, and R / E (k + 1) = 0.85, and for k: 7 at 16, R / Ek = 0.80.
On fait ensuite défiler sur chacune de ces planeuses A, B, C et X une bande d'acier de 2 mm d'épaisseur sur 1000 mm de large, en appliquant soit un taux de plastification de 60 %, soit de 80 %. L'acier considéré est un acier du type THR1000 dont la limite d'élasticité Rp0,2 est de 900 MPa. Les figures 2 et 3 présente une courbe de calcul du cintre résiduel de la bande d'acier planée, en fonction du serrage de sortie de la planeuse, pour un taux de plastification de 60 % (figure 2) et un taux: de plastification de 80 % (figure 3). Les différentes planeuses sont repérées par les. symboles suivants : - planeuse A : symbole u, - planeuse B : repère A, - planeuse C : symbole X, et - planeuse X : symbole *.Each of these levelers A, B, C and X is then passed through a strip of steel 2 mm thick by 1000 mm wide, applying either a plasticization ratio of 60% or 80%. The steel in question is a steel of the THR1000 type whose yield strength R p0.2 is 900 MPa. FIGS. 2 and 3 show a calculation curve of the residual hanger of the flat steel strip, as a function of the output clamping force of the leveler, for a plasticization rate of 60% (FIG. 2) and a plasticizing rate of 80% (Figure 3). The different planers are marked by the. following symbols: - leveler A: symbol u, - leveler B: reference A, - leveler C: symbol X, and - planer X: symbol *.
Enfin, on identifie pour chaque planeuse et en fonction du taux de plastification, les efforts en entrée de planeuse, les efforts en sortie de planeuse, les efforts totaux, et le couple de la planeuse. Puis, on calcule les gains obtenus dans chacune des planeuses A, B et C selon l'invention par rapport à la planeuse X conventionnelle, et on regroupe l'ensemble des résultats dans les tableaux 1 et 2.Finally, for each leveler and according to the plasticization rate, the planer input forces, the planer output forces, the total forces, and the planer torque are identified. Then, the gains obtained in each of the planers A, B and C according to the invention are calculated with respect to the conventional X planer, and all the results are summarized in Tables 1 and 2.
Tableau 1 : gain sur les efforts et le couple et nombre de points de fonctionnement, à taux de plastification de 60 %Table 1: gain on forces and torque and number of operating points, at 60% plasticization rate
Tableau 2 : gain sur les efforts et le couple et nombre de points de fonctionnement, à taux de plastification de 80 % Table 2: gain on forces and torque and number of operating points, at 80% plasticization rate
Il ressort de ces deux tableaux de résultats, que la planeuse A est la planeuse qui permet d'obtenir les plus gros gains en effort et couple, et ce quel que soit le taux de plastification. Cependant, comme nous pouvons le constater sur les figures 2 et 3, cette planeuse n'est pas forcément la plus fiable si l'on souhaite conférer à la tôle un cintre parfaitement nul, puisque, en particulier lorsque le taux de plastification est de 60 %, le nombre de points de fonctionnement est de 1 , alors qu'il est de 9 pour la planeuse C. From these two tables of results, that the planeuse A is the planeuse which makes it possible to obtain the biggest gains in effort and couple, and whatever the rate of plasticization. However, as we can see in Figures 2 and 3, this planer is not necessarily the most reliable if it is desired to give the sheet a perfectly zero hanger, since, especially when the rate of plasticization is 60 %, the number of operating points is 1, while it is 9 for the leveler C.

Claims

REVENDICATIONS
1. Planeuse (1) sans traction destinée à planer des bandes métalliques (5), ayant une entrée et une sortie, comportant n+1 rouleaux motorisés (4,4'), du type comprenant deux cassettes (2,3) superposées supportant chacune au moins n/2 rouleaux (4,4') de rayon R constant, décalés les uns par rapport aux autres et disposés en alternance au-dessus et en dessous du parcours de la bande (5), l'axe de chacun des rouleaux (4,4') d'une cassette (2,3) étant séparé de l'axe du rouleau (4,4') immédiatement successif de l'autre cassette par un entraxe Ek, dans laquelle : pour k : 2 à 4, (R/Ek) = (R/E1), pour k : n-3 à n, (R/Ek ) = (R/En), (R/En) < (R/E1), et pour k : 5 à (n-1), (R/En) ≤ (R/Ek) ≤ (R/E1), et (R/Ek) < (R/E(k+1)), ladite planeuse (1) comprenant éventuellement des moyens de réglages des entraxes Ek.1. Planer (1) without traction intended to glide metal strips (5), having an inlet and an outlet, comprising n + 1 motorized rollers (4,4 '), of the type comprising two cassettes (2,3) superimposed supporting each at least n / 2 rollers (4,4 ') of constant radius R, offset relative to each other and arranged alternately above and below the path of the strip (5), the axis of each of the rollers (4,4 ') of a cassette (2,3) being separated from the axis of the roll (4,4') immediately in succession from the other cassette by a center distance Ek, in which: for k: 2 to 4, (R / Ek) = (R / E1), for k: n-3 to n, (R / Ek) = (R / En), (R / En) <(R / E1), and for k : 5 to (n-1), (R / En) ≤ (R / Ek) ≤ (R / E1), and (R / Ek) <(R / E (k + 1)), said planer (1) optionally comprising means for adjusting the distances Ek.
2. Planeuse (1) selon la revendication 1 , dans laquelle n ≥ 8.2. Planer (1) according to claim 1, wherein n ≥ 8.
3. Planeuse (1) selon l'une des revendications 1 à 2, dans laquelle, lorsque l'épaisseur de la bande (5) à planer est comprise entre 0,5 et 3 mm, 14 ≤ n ≤ 22.3. Planer (1) according to one of claims 1 to 2, wherein, when the thickness of the strip (5) to planer is between 0.5 and 3 mm, 14 ≤ n ≤ 22.
4. Planeuse (1) selon l'une des revendications 1 à 2, dans laquelle, lorsque l'épaisseur de la bande (5) à planer est comprise entre 3 et 15 mm, 10 ≤ n ≤ 16.4. Planer (1) according to one of claims 1 to 2, wherein, when the thickness of the strip (5) to planer is between 3 and 15 mm, 10 ≤ n ≤ 16.
5. Planeuse (1) selon l'une quelconque des revendications 1 à 4, dans laquelle pour k : 1 à x, 0,90 < R/Ek < 0,95, et pour k : (x+1) à n, 0,70 < R/Ek < 0,80. 5. Planer (1) according to any one of claims 1 to 4, wherein for k: 1 to x, 0.90 <R / Ek <0.95, and for k: (x + 1) to n, 0.70 <R / Ek <0.80.
6. Planeuse (1) selon l'une quelconque des revendications 1 à 4, dans laquelle6. Planer (1) according to any one of claims 1 to 4, wherein
- pour k : 1 à x, 0,90 < R/Ek ≤ 0,95, - l'un des entraxes Ex, avec 5 ≤ x ≤ n-4, étant tel que : 0,80 < R/Ex < 0,90, et - pour k : (x+1) à n, 0,70 < R/Ek < 0,80.- for k: 1 to x, 0.90 <R / Ek ≤ 0.95, - one of the distances Ex, with 5 ≤ x ≤ n-4, such that: 0.80 <R / Ex <0 , 90, and - for k: (x + 1) at n, 0.70 <R / Ek <0.80.
7. Planeuse (1) selon l'une quelconque des revendications 1 à 4, dans laquelle - pour k : 1 à x, 0,90 < R/Ek < 0,95, - l'un des entraxes Ex, avec 5 < x ≤ n-4, étant tel que : 0,80 ≤ R/Ex < 0,90, et 0,75 < R/E(x+1) <0,85, et - pour k : (x+2) à n, 0,70 < R/Ek < 0,80.7. Planer (1) according to any one of claims 1 to 4, wherein - for k: 1 to x, 0.90 <R / Ek <0.95, - one of the distances Ex, with 5 < x ≤ n-4, being such that: 0.80 ≤ R / Ex <0.90, and 0.75 <R / E (x + 1) <0.85, and - for k: (x + 2) at n, 0.70 <R / Ek <0.80.
8. Procédé de planage d'une bande métallique (5) dans lequel on utilise une planeuse (1) selon l'une quelconque des revendications 1 à 7, planeuse dans laquelle le taux de plastification est supérieur ou égal à 60 %, et inférieur ou égal à 90 %.8. A method for flattening a metal strip (5) in which a planer (1) according to any one of claims 1 to 7, wherein the level of plasticization is greater than or equal to 60%, and lower or equal to 90%.
9. Procédé de planage selon la revendication 8, dans lequel la bande métallique (5) est une bande d'acier. 9. Planing method according to claim 8, wherein the metal strip (5) is a steel strip.
EP05737040A 2004-03-10 2005-03-01 Roller leveller with variable axle distance Active EP1725352B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200530400T SI1725352T1 (en) 2004-03-10 2005-03-01 Roller leveller with variable axle distance
PL05737040T PL1725352T3 (en) 2004-03-10 2005-03-01 Roller leveller with variable axle distance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0402482A FR2867401B1 (en) 2004-03-10 2004-03-10 PLANEUSE WITH VARIABLE ENTRAX
PCT/FR2005/000482 WO2005097369A1 (en) 2004-03-10 2005-03-01 Roller leveller with variable centre distance

Publications (2)

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EP1725352A1 true EP1725352A1 (en) 2006-11-29
EP1725352B1 EP1725352B1 (en) 2008-07-16

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US (1) US7617710B2 (en)
EP (1) EP1725352B1 (en)
JP (1) JP4657285B2 (en)
KR (1) KR101030942B1 (en)
CN (1) CN100425367C (en)
AT (1) ATE401143T1 (en)
BR (1) BRPI0508585B1 (en)
CA (1) CA2558816C (en)
DE (1) DE602005008207D1 (en)
ES (1) ES2309748T3 (en)
FR (1) FR2867401B1 (en)
MX (1) MXPA06010322A (en)
PL (1) PL1725352T3 (en)
PT (1) PT1725352E (en)
RU (1) RU2374021C2 (en)
SI (1) SI1725352T1 (en)
UA (1) UA89371C2 (en)
WO (1) WO2005097369A1 (en)
ZA (1) ZA200607315B (en)

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FR2893520B1 (en) * 2005-11-22 2009-05-15 Vai Clecim Soc Par Actions Sim METHOD FOR PLACING A FLAT PRODUCT IN THE FORM OF A STRIP OR A TELE IN A PLANER MILLING MACHINE WITH IMBRIC ROLLERS AND A PLANAR INSTALLATION FOR IMPLEMENTING THE METHOD
CN103331338A (en) * 2013-07-02 2013-10-02 无锡天惠塑机有限公司 Collimation automatic control aligning device
BE1021399B1 (en) * 2014-04-17 2015-11-16 Van Heyghen Staal Nv A PRODUCTION METHOD FOR A FLAT METAL PLATE
CN104384246B (en) * 2014-09-30 2017-07-28 巢湖广丰金属制品有限公司 A kind of fine shaping automatic control system of strip and method
US10010918B2 (en) * 2016-10-05 2018-07-03 Allor Manufacturing Inc. Device and method for leveling a metal plate

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US3312094A (en) * 1963-11-29 1967-04-04 Siegner Maschb G M B H Sheet leveler
FR2334440A1 (en) * 1975-12-09 1977-07-08 Mesta Machine Co Sheet levelling and straightening machine - has roll configuration which can be varied for levelling in one pass sheets of different ductilities
US4635458A (en) 1985-04-24 1987-01-13 Monarch Machine Tool Co. Leveling apparatus
JPS6261729A (en) * 1985-09-11 1987-03-18 Hitachi Ltd Complex straightener for small diameter roll group
JPH07164051A (en) * 1993-12-15 1995-06-27 Kawasaki Steel Corp Method for controlling rolling reduction of roller leveler and control device for its implementation
JP2000158045A (en) * 1998-11-24 2000-06-13 Nisshin Steel Co Ltd Method for straightening shape of strip steel
CN1193836C (en) * 2001-10-19 2005-03-23 中国第二重型机械集团公司 Plate and band material roll gap adjustable flattening machine

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Title
See references of WO2005097369A1 *

Also Published As

Publication number Publication date
PT1725352E (en) 2008-10-01
CA2558816A1 (en) 2005-10-20
KR101030942B1 (en) 2011-04-28
ATE401143T1 (en) 2008-08-15
CN100425367C (en) 2008-10-15
JP2007528298A (en) 2007-10-11
FR2867401B1 (en) 2006-04-21
ZA200607315B (en) 2008-04-30
SI1725352T1 (en) 2008-12-31
UA89371C2 (en) 2010-01-25
JP4657285B2 (en) 2011-03-23
BRPI0508585B1 (en) 2019-05-07
CN1942259A (en) 2007-04-04
PL1725352T3 (en) 2008-12-31
US20070186607A1 (en) 2007-08-16
BRPI0508585A (en) 2007-08-21
RU2374021C2 (en) 2009-11-27
ES2309748T3 (en) 2008-12-16
DE602005008207D1 (en) 2008-08-28
MXPA06010322A (en) 2008-03-25
KR20060126812A (en) 2006-12-08
EP1725352B1 (en) 2008-07-16
CA2558816C (en) 2011-07-26
FR2867401A1 (en) 2005-09-16
US7617710B2 (en) 2009-11-17
WO2005097369A1 (en) 2005-10-20
RU2006135638A (en) 2008-04-20

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