EP3661669A1 - Multi-roll metal strip leveller - Google Patents

Multi-roll metal strip leveller

Info

Publication number
EP3661669A1
EP3661669A1 EP18738359.1A EP18738359A EP3661669A1 EP 3661669 A1 EP3661669 A1 EP 3661669A1 EP 18738359 A EP18738359 A EP 18738359A EP 3661669 A1 EP3661669 A1 EP 3661669A1
Authority
EP
European Patent Office
Prior art keywords
rollers
profile
nesting
leveling
linear
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
EP18738359.1A
Other languages
German (de)
French (fr)
Other versions
EP3661669B1 (en
EP3661669B8 (en
Inventor
Sébastien MAILLARD
Dominique Tellier
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.)
Clecim SAS
Original Assignee
Primetals Technologies France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Primetals Technologies France SAS filed Critical Primetals Technologies France SAS
Priority to PL18738359T priority Critical patent/PL3661669T3/en
Priority to RS20211292A priority patent/RS62458B1/en
Publication of EP3661669A1 publication Critical patent/EP3661669A1/en
Publication of EP3661669B1 publication Critical patent/EP3661669B1/en
Application granted granted Critical
Publication of EP3661669B8 publication Critical patent/EP3661669B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B21D1/05—Stretching combined with rolling
    • 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

Definitions

  • the present invention relates to a metal strip planer ⁇ lique according to the preamble of claim 1.
  • a problem of final shaping of the metal ⁇ lique product such as stamping or forming is thus made more difficult by high elastic limit properties (springback), and requires an incoming product having a homogeneous material and perfectly free of internal stresses.
  • a machine of metal strip has a ⁇ property of correcting unevenness, for example by means of two upper and lower rows of upper and lower leveling rollers respectively, the rou ⁇ WPL upper and lower being parallel axes, phenomenon a ⁇ longitudinally in a band pass line direction and also offset in height, so as to determine, by nesting rollers, a corrugated path of the strip between said rollers.
  • this type of planer makes it possible to impose an elongation of the strands of band in order to make it flatter.
  • At the exit of such pla ⁇ neuse it is possible to have an anti-tile crew to correct a residual deformation related to the effect of tape tile.
  • planer may include at its output a second so-called multi-roll type module, whose main property is to reduce residual stresses of the metal strip.
  • fig. 20-23 presents in particular tensile planarization profiles comprising a first profile of linear roll nesting values (Penetration settings of rollers (mm), Fig. 22) in the direction of the line of the passing which form an effect of " corner ", that is to say, for which the nesting is more accentuated at the input of the planer than at its output, in a linear manner and to compensate residual con ⁇ trates of the product under tension.
  • a se- cond linear interleaving value profile of the rollers is also provided with two linear profiles ⁇ discontinuous sive of linear values interleaves ( ⁇ pene tration settings of rollers (mm), Fig. 23) in the direction of line of pass.
  • Figure 1 shows a typical example of asymmetrical residual stress profile (c) according to the thickness (e) of tape (B) such that after a planing step according to the state of the art.
  • the stress value is zero at the level of at least one neutral fiber (fn), the said neutral fiber being here spaced from a so-called "center of strip” fiber (cb) located in the middle of the strip thickness.
  • center of strip fiber (cb) located in the middle of the strip thickness.
  • This unbalanced asymmetric distribution imbalance of nonlinear constraints is obviously very disadvantageous for subsequent forming steps which require mastered (symmetrically established) stress properties according to the thickness of the strip.
  • FIG. 2 shows an optimized profile of resi ⁇ dual stresses targeted by the invention, in that the asymmetry of the profile according to FIG. 1 tends to be corrected by a rebalancing of the asymmetric positive and negative stresses.
  • Such stablished ⁇ balance should lead to a stress profile symmetrical to the strip center and whose stress distribution (c) Positive and negative is also the most balanced possible.
  • An object of the present invention is to provide a metal strip leveler adapted to at least compensate foreriequi ⁇ free, in particular asymmetrical, distribution of residual stresses in the thickness of the planished web, in particular for high-strength steels elastic.
  • a metal strip planer is thus proposed tra ⁇ vers the features of claim 1.
  • the invention has a metal strip planer, said strip having a thickness subjected to a profile of con ⁇ strands, said profile having at least one fault geneity ceiling and / or asymmetry as a function of the thickness of the ⁇ Duit, said leveler comprising:
  • rollers being planing or dressing rolls in contact with the band
  • a major advantage of the nesting profile with at least three nonlinear type deviations makes it possible to better distribute residual stresses in the thickness of the pla ⁇ band, on the model of FIG. 2, conversely of known linear type profiles which mainly have a planar resorbant effect of symmetrical type constraints on the thickness of the band to be hovered and therefore can not rebalance an asymmetric constraint.
  • Figure 7 Nesting profile according to the third embodiment.
  • Figure 3 shows a first embodiment of the flattener of a metal strip (B) according to the invention and in a side view (operator for example).
  • the strip has a thickness subjected to a stress profile as de ⁇ written previously in relation to Figure 1.
  • the tape also has defects in any flatness.
  • Said planer comprises:
  • rollers being planing rollers or dressage con ⁇ tact with the web
  • the upper and lower rollers are paral axes ⁇ Lele, longitudinally offset in a pass line direction (lp) and offset in height, so as to determine, by vertically overlapping rollers, an undulating path of the strip between said rolls
  • FIG. 4 shows, according to FIG. 3, the said deviations having a profile (in continuous line) of nonlinear values of imbrication of either convex or concave type relative to a profile (in dotted lines) of linear nesting values ( Imbr_lin) following the direction of line (rolls 1 to 16 in this case).
  • the two upper and the two lower rollers rollers are available ⁇ SES (1, 2, 3, 4) in a first set planing device (fold) comprising for each of the rollers a vertical individual adjustment (v1, v2, v3, v4) relative to a frame, a beam, a cassette or any other holding element included in the planer for this purpose.
  • the adjustment of at least one of the rollers comprises at least one jack.
  • the first rollers of the planer included in the first set of planing (fold) ensure in principle most of the elongation of the band to correct flatness defects and stresses.
  • the planer may additionally comprise at least one second leveling assembly (pl2) respectively formed by an upper cassette (C1) and a lower cassette (C2) of multi-roll type planer (5, 6, 7, 8, ... ).
  • This con ⁇ figuration is particularly suitable for the planing of steels known as "tinplate", for example suitable for the manufacture of metal packaging.
  • At least one of the cassettes (Cl, C2) of the second set of leveling (pl2) is inclined by means of ⁇ vertical placement (v2hg, v2hd, v2bg, v2bd) so that the cassettes are disposed at an angle open in a vertical plane according to the direction of pass.
  • ⁇ vertical placement v2hg, v2hd, v2bg, v2bd
  • Figures 5 to 7 finally show a second and a third embodiment of the planer according to the invention.
  • the second embodiment of the planer according to the invention provides that the planer is uni ⁇ cally composed of the second set of planing mulit-roller type (first set of planing absent or inactive).
  • This type of multi-roll leveler typically includes a large number of rollers (15 or more), and has the advantage to be able to absorb large unevenness and con ⁇ constraint.
  • the non-linear imbrication value profile is applied to at least four rolls of the second leveling assembly (pl2), for example, by means of the two rollers su ⁇ iors (5, 7) and the two rollers lower (6, 8) which are arranged in (at least) the second leveling assembly (pl2) respectively formed by an upper cassette (C1) and a lower cassette (C2) of multi-roll type planer, with at least one said cassettes comprising for each of the rollers a vertical individual adjustment (r5, r7; r6, r8, ...) of the rolls with respect to the cassettes, ideally the setting comprising at least one actuator of mechanical type or servomotor.
  • Figure 6 shows an example of nonlinear profile nesting values (IMBR) of convex shape and here app ⁇ the rollers (5, 6, 7, 8, etc.) of one second set of leveling (pl2) presented in FIG. 5 for this second embodiment, the first leveling assembly being not present or inactive.
  • IMBR nonlinear profile nesting values
  • the third embodiment of the planer according to the invention finally provides that the platen is again composed of the first and second plan ⁇ ⁇ planing (fold, pl2).
  • the platen is again composed of the first and second plan ⁇ ⁇ planing (fold, pl2).
  • at least the two upper rollers and two lower rollers connected to the pro ⁇ thread of nonlinear imbrication values are distributed or distributed in the first set and in the second ⁇ seems.
  • FIG. 7 This example of two profiles (Imbr) succeeding one another according to the pass line is represented in FIG. 7, in the form of a first convex profile for the rollers (1, 2, 3, 4) followed by a second concave profile for the rollers (5, 6, 7, 8, etc.) with respect to each of the two successive linear profiles (Imbr_lin) of usual nesting of the state of the art respectively.
  • rollers of the second planing assembly made it possible in the state of the art to limit the residual stresses generated by linear and decreasing planar nesting to compensate for stresses induced in the product
  • the application of profiles of nonlinear imbrication values (convex and / or concave) according to FIG. 5 around said linear profiles leads to very advantageously complementarily com ⁇ think stress asymmetries in the thickness of the product.
  • said first rollers (in the bandpass direction) of the second planar assembly (p12) are arranged under non-linear nesting values of concave or convex shape, said nesting values nonlinear being able ⁇ Stainlesseures linear values nesting (Imbr_lin).
  • Such an advantageous profile of nonlinear nesting values is explicitly shown in FIGS. 6 and 7.
  • an existing planer can also be adapted easily and economically to meet the characteristics and ⁇ advan tages of the leveler according to the invention, whereby:
  • the vertical displacement means (v1, v2, v3, v4) of the first planing set (fold) are present in an existing planer comprising said first set;
  • planer according to the invention has the following characteristics and advantages:
  • the second set of leveling (pl2) type multi rollers comprises several pairs of Suselling cassettes ⁇ higher and lower succeeding according to the pass line, in order to generate a first pair of tapes stronger elongation effects (planing) and generate in a second pair of cassettes of weaker elongation effects (dressage). All these pairs of cassettes make it possible to modulate and widen the range of nonlinear nesting values for very asymmetrical constraints;
  • the profile of linear nesting values (Imbr_lin) according to the direction of the line of the pass is decreasing by ⁇ and then an entry to an output of at least one portion of band planing along said line of pass and the profile of non values nesting -linéaires near or intersects the value of profile nesting li ⁇ provisionaire, so that the effects of resorption con ⁇ residual constraints (reasury out constraints asymmetry ⁇ quiet because by the invention) are always preserved;
  • At least two tensioners are disposed upstream and downstream respectively of at least a group of upper and lower rollers, so that the strip is sou ⁇ put to a tensile stress;
  • the second leveling assembly (pl2) comprises at least 2.2 times more planing rolls than the first leveling set (ply), ideally 2.5 to 6 times more, of so that if a more intense planing (hard steel, under very high elastic limit) and within the meaning of the invention is required, it will be possible not to have to increase the number of rollers of the first leveling set (fold) if said assembly is present or active, but rather if necessary to increase the number of rollers of the second leveling set (pl2), in particular also the number of its rollers (5, 6, 7, 8,) in the form of nonlinear nesting values when changing or maintaining cassettes;
  • the planer embodiments according to the invention can be advantageously controlled by a control unit of the automaton type and / or able to be controlled by an operator, said unit having a support of don ⁇ born including different models of con ⁇ profile constraint depending on the mechanical properties of different strip materials to hover and capable of selecting one of the leveling models associated with dif ⁇ ent profiles of non-linear values nesting in the form of control signals transmitted to tionneurs of ac- vertical adjustment (v1, v2 ...; r5, r6 ...) of the successive planing rollers. It shows a ⁇ ducer of flat products might more easily to extend its product range while ensuring high quality of product, in particular by asymmetric ⁇ con straints advantageously compensated;
  • planer embodiments according to the invention advantageously provide that on the operator side at least three vertical gaps between first pairs of successive upper and lower rollers have a first profile of non-linear values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Metal Rolling (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

The present invention relates to a metal strip leveller (B), said strip having a thickness (e) subject to a stress distribution, said leveller comprising: - a row of upper rolls (1, 3, 5, 7, 9...) and a row of lower rolls (2, 4, 6, 8, 10...), - the upper and lower rolls have parallel axes, longitudinally offset in a direction of line of passage (lp) and offset in height, in such a way as to define, by vertical imbrication of the rolls, an undulating path of the strip between said rolls, characterised in that at least two upper rolls ([1, 3]; [5, 7]) and two lower rolls ([2, 4]; [6, 8]) are arranged respectively above and below the line of passage, such that they form three vertical imbrication gaps, said gaps having a profile of non-linear imbrication values (Imbr) that are either convex or concave with respect to a profile of linear imbrication values (Imbr_lin) in the direction of the line of passage.

Description

Description Description
Planeuse multi-rouleaux de bande métallique La présente invention concerne une planeuse de bande métal¬ lique selon le préambule de la revendication 1. The present invention relates to a metal strip planer ¬ lique according to the preamble of claim 1.
Actuellement, il existe une forte évolution des nuances de bandes métalliques telles que des tôles en particulier dans le domaine des applications automobiles vers des propriétés mécaniques très élevées, par exemple par une utilisation de système de traitement thermique imposant une transformation de phase dans des conditions difficiles de contrôle (par exemple lors d'un refroidissement rapide) et induisant au sein du produit métallique des déformations, hétérogénéités et contraintes internes. Currently, there is a strong evolution of metal strip grades such as sheet metal in particular in the field of automotive applications to very high mechanical properties, for example by using a heat treatment system imposing a phase transformation in difficult conditions control (for example during a rapid cooling) and inducing within the metal product deformations, heterogeneities and internal stresses.
Une problématique de mise en forme finale du produit métal¬ lique telle que par emboutissage ou formage est ainsi rendue plus ardue par des propriétés haute limite élastique (retour élastique) , et nécessite un produit entrant ayant un matériau homogène et parfaitement libéré de contraintes internes. A problem of final shaping of the metal ¬ lique product such as stamping or forming is thus made more difficult by high elastic limit properties (springback), and requires an incoming product having a homogeneous material and perfectly free of internal stresses.
Il est connu qu'une planeuse de bande métallique a une pro¬ priété de corriger des défauts de planéité, par exemple au moyen de deux rangées supérieure et inférieure de rouleaux supérieurs et respectivement inférieurs de planage, les rou¬ leaux supérieurs et inférieurs étant à axes parallèles, déca¬ lés longitudinalement selon une direction de ligne de passe de bande et également décalés en hauteur, de façon à détermi- ner , par imbrication des rouleaux, un trajet ondulé de la bande entre les dits rouleaux. Principalement, ce type de planeuse permet d' imposer un allongement des brins de bande afin de la rendre plus plane. A la sortie d'une telle pla¬ neuse, il est possible de disposer un équipage anti-tuile afin de venir corriger une déformation résiduelle lié à effet de tuile de bande. It is known that a machine of metal strip has a ¬ property of correcting unevenness, for example by means of two upper and lower rows of upper and lower leveling rollers respectively, the rou ¬ WPL upper and lower being parallel axes, déca ¬ longitudinally in a band pass line direction and also offset in height, so as to determine, by nesting rollers, a corrugated path of the strip between said rollers. Mainly, this type of planer makes it possible to impose an elongation of the strands of band in order to make it flatter. At the exit of such pla ¬ neuse, it is possible to have an anti-tile crew to correct a residual deformation related to the effect of tape tile.
Enfin, ladite planeuse peut comprendre à sa sortie un second module dit de type multi-rouleaux, dont la principale pro- priété est de venir réduire des contraintes résiduelles de la bande métallique.  Finally, said planer may include at its output a second so-called multi-roll type module, whose main property is to reduce residual stresses of the metal strip.
Un état de la technique fondamental EP0665069A1 breveté par le déposant de la présente demande brevet introduit un tel type de planeuse optimisée afin d'améliorer la réduction de défauts de planéités et de contraintes résiduelles, au moyen des caractéristiques et des avantages précités. A patented state of the art EP0665069A1 patented by the applicant of the present patent application introduces such type of optimized planer to improve the reduction of flatness defects and residual stresses, by means of the features and advantages mentioned above.
Une étude « The mechanical and metallurgical effects of skin passing and tension levelling », European Commission, ISSN 1018-5593, Technical Steel Research, 1992, §2.3.3.3, A study "The mechanical and metallurgical effects of skin passing and voltage levelling", European Commission, ISSN 1018-5593, Technical Steel Research, 1992, §2.3.3.3,
§2.3.3.4, fig. 20-23 présente en particulier des profils de planage sous traction comprenant un premier profil de valeurs d'imbrication linéaire des rouleaux (Pénétration settings of rollers (mm), fig. 22) selon la direction de ligne de passe qui forment un effet de « coin », c'est-à-dire pour lequel l'imbrication est plus accentuée en entrée de planeuse qu'à sa sortie, de manière linéaire et afin de compenser des con¬ traintes résiduelles du produit sous tension. Enfin, un se- cond profil de valeurs d'imbrication linéaire des rouleaux est aussi présenté comprenant deux profils linéaires succes¬ sifs discontinus de valeurs d'imbrications linéaires (Péné¬ tration settings of rollers (mm), fig. 23) selon la direction de ligne de passe. Ce profil amélioré est atteint par dispo- sition de deux ensembles successifs de cassettes supérieure et inférieure de planage étant chacun individuellement incli¬ nable dans un plan vertical à la ligne de passe de bande. Il est précisé que de tels profils de valeurs d' imbrication per¬ mettent de compenser des contraintes résiduelles de type li- néaires du matériau, mais que des contraintes non-linéaires semblent persister. Au même titre, une récente publication EP2813299A1 reprend ce même principe de planeuse sous trac¬ tion et présente ainsi ces mêmes inconvénients, ainsi que ceux relatés ci-après. §2.3.3.4, fig. 20-23 presents in particular tensile planarization profiles comprising a first profile of linear roll nesting values (Penetration settings of rollers (mm), Fig. 22) in the direction of the line of the passing which form an effect of " corner ", that is to say, for which the nesting is more accentuated at the input of the planer than at its output, in a linear manner and to compensate residual con ¬ trates of the product under tension. Finally, a se- cond linear interleaving value profile of the rollers is also provided with two linear profiles ¬ discontinuous sive of linear values interleaves (¬ pene tration settings of rollers (mm), Fig. 23) in the direction of line of pass. This enhanced profile is achieved by Avail- sition of two successive sets of upper and lower leveling cassettes are each individually INCLI ¬ nable in a vertical plane to the strip pass line. It is specified that such nesting value profiles per¬¬ compensate residual stresses of the linear type of the material, but that nonlinear constraints seem to persist. In the same way, a recent publication EP2813299A1 uses this same principle of under-trac ¬ tion planer and thus has the same disadvantages, as well as those described below.
Le déposant a voulu persévérer dans l'étude des contraintes résiduelles de type non-linéaires. Par des expériences sur site et de type simulé, il a été montré que, suite à un pla- nage sous traction tel que celui décrit dans l'état de l'art précité, la bande métallique présente majoritairement des contraintes mécaniques présentant une forte asymétrie en in¬ tensité selon l'épaisseur du produit et par rapport à au moins une fibre neutre de la bande. Effectivement, tout comme dans l'état de la technique précité par l'Etude de la Commis- sion européenne ISSN 1018-5593 ou EP2813299A1, et après avoir testé de tels profils d' imbrication linéaire continu ou dis¬ continu, pouvant avoir plusieurs pentes possibles, ces con¬ traintes résiduelles, ci-après qualifiées d'asymétriques, persistent en défaveur de la qualité exigée de produit plané. The applicant wanted to persevere in the study of residual stresses of non-linear type. By on-site and simulated-type experiments, it has been shown that, following a traction plane such as that described in the state of the art mentioned above, the metal strip has predominantly mechanical stresses with a strong asymmetry. in in ¬ tensity according to the thickness of the product and with respect to at least one neutral fiber of the strip. Indeed, as in the abovementioned state of the art by the study of the European Com- mission ISSN 1018-5593 or EP2813299A1, and after testing such profiles of continuous linear nesting or say ¬ continuously, which can have several slopes possible, these con ¬ residual constraints, hereinafter described as asymmetrical, persist to the detriment of the quality required glide product.
A ce titre, deux figures sont fournies : As such, two figures are provided:
- Figure 1 : un profil asymétrique de contraintes rési¬ duelles selon l'épaisseur de bande tel qu'après une étape de planage selon l'état de l'art, - Figure 1: an asymmetrical profile constraints resi dual ¬ according to the strip thickness such that, after a step of temper rolling according to the prior art,
- Figure 2 : un profil optimisé de contraintes résiduelles visé par l'invention.  - Figure 2: an optimized profile of residual stresses targeted by the invention.
Figure 1 présente un exemple typique de profil asymétrique de contraintes résiduelles (c) selon l'épaisseur (e) de bande (B) tel qu'après une étape de planage selon l'état de l'art. La valeur de contrainte est nulle au niveau d'au moins une fibre neutre (fn) , la dite fibre neutre étant ici espacée d'une fibre dite « centre de bande » (cb) localisée au milieu de l'épaisseur de bande. Il est ici ainsi donné un exemple d'asymétrie typique de profil de contraintes résiduelles (c) non-linéaires, sachant que, dans le domaine d'épaisseur sous la fibre neutre décentrée du centre de bande, de faibles con¬ traintes négatives (= compression) sont enregistrées, alors que dans le domaine d'épaisseur au-dessus de la fibre neutre décentrée du centre de bande, de fortes contraintes positives (= traction) non-linéaires sont présentes. Ce déséquilibre de répartition asymétrique des contraintes non-linéaires est évidemment fort pénalisant pour des étapes ultérieures de formage qui requièrent des propriétés de contraintes maitri- sées (à symétrie établie) selon l'épaisseur de bande. Figure 1 shows a typical example of asymmetrical residual stress profile (c) according to the thickness (e) of tape (B) such that after a planing step according to the state of the art. The stress value is zero at the level of at least one neutral fiber (fn), the said neutral fiber being here spaced from a so-called "center of strip" fiber (cb) located in the middle of the strip thickness. Here is an example of typical asymmetry of residual stress profile (c) nonlinear, knowing that in the thickness range under the neutral axis offset center of the band, low con ¬ negative constraints (= compression) are recorded, while in the thickness range above the fiber neutral center of the band center, strong nonlinear positive (= traction) stresses are present. This unbalanced asymmetric distribution imbalance of nonlinear constraints is obviously very disadvantageous for subsequent forming steps which require mastered (symmetrically established) stress properties according to the thickness of the strip.
Figure 2 présente un profil optimisé de contraintes rési¬ duelles visé par l'invention, en ce que l'asymétrie du profil selon figure 1 tend à être corrigée par un rééquilibre des contraintes asymétriques positives et négatives. Un tel réé¬ quilibre doit aboutir à un profil de contraintes symétrique par rapport au centre de bande et dont la répartition des contraintes (c) positives et négatives soit aussi la plus équilibrée possible. FIG. 2 shows an optimized profile of resi ¬ dual stresses targeted by the invention, in that the asymmetry of the profile according to FIG. 1 tends to be corrected by a rebalancing of the asymmetric positive and negative stresses. Such stablished ¬ balance should lead to a stress profile symmetrical to the strip center and whose stress distribution (c) Positive and negative is also the most balanced possible.
Un but de la présente invention est de proposer une planeuse de bande métallique apte à au moins compenser un déséqui¬ libre, en particulier asymétrique, de répartition de contraintes résiduelles dans l'épaisseur de la bande planée, en particulier pour des aciers à haute limite élastique. An object of the present invention is to provide a metal strip leveler adapted to at least compensate for déséqui ¬ free, in particular asymmetrical, distribution of residual stresses in the thickness of the planished web, in particular for high-strength steels elastic.
Une planeuse de bande métallique est ainsi proposée au tra¬ vers des caractéristiques de la revendication 1. L'invention présente une planeuse de bande métallique, ladite bande possédant une épaisseur soumise à un profil de con¬ traintes, le dit profil présentant au moins un défaut de pla- néité et/ou une asymétrie en fonction de l'épaisseur du pro¬ duit, ladite planeuse comprenant : A metal strip planer is thus proposed tra ¬ vers the features of claim 1. The invention has a metal strip planer, said strip having a thickness subjected to a profile of con ¬ strands, said profile having at least one fault geneity ceiling and / or asymmetry as a function of the thickness of the ¬ Duit, said leveler comprising:
- une rangée de rouleaux supérieurs et une rangée de rouleaux inférieurs, les dits rouleaux étant des rouleaux de planage ou de dressage en contact avec la bande, - a row of upper rollers and a row of rollers lower rollers, said rollers being planing or dressing rolls in contact with the band,
- les rouleaux supérieurs et inférieurs étant à axes paral¬ lèles, décalés longitudinalement selon une direction de ligne de passe de la bande et décalés en hauteur, de façon à déter¬ miner , par imbrication verticale des rouleaux, un trajet on¬ dulé de la bande entre les dits rouleaux, - the upper and lower rollers being paral axes ¬ Lele, longitudinally offset in a band pass line direction and offset in height, so as to deter ¬ mining, by vertically overlapping rollers, a path is ¬ Dule the strip between said rolls,
- au moins deux rouleaux supérieurs et deux rouleaux infé¬ rieurs sont disposés au-dessus et respectivement au-dessous de la ligne de passe, de sorte qu'ils forment trois écarts d'imbrication verticale, les dits écarts ayant au moins un profil de valeurs non-linéaires d' imbrication de type soit convexe soit concave par rapport à un profil de valeurs li¬ néaires d'imbrication suivant la direction de ligne de passe. - at least two upper rollers and two rollers NCI ¬ laughing are arranged above and below the pass line, respectively, so that they form three vertical nesting gaps, said gaps having at least one profile nonlinear values for type nesting either convex or concave with respect to a value profile li ¬ néaires nesting along the pass line direction.
Un avantage majeur du profil d'imbrication à au moins trois écarts de type non-linéaire permet en effet de mieux répartir des contraintes résiduelles dans l'épaisseur de la bande pla¬ née, sur le modèle de la figure 2, à l'inverse de profils connus de type linéaire qui n'ont majoritairement qu'un effet de planage résorbant des contraintes de type symétrique sur l'épaisseur de bande à planer et ne peuvent donc rééquilibrer une contrainte asymétrique. Plusieurs modes de réalisation avantageux de la planeuse se¬ lon l'invention sont ainsi possibles, en fonction des besoins qualitatifs souhaités. Un ensemble de sous-revendications présente ces modes et également des avantages complémentaires de l'invention. A major advantage of the nesting profile with at least three nonlinear type deviations makes it possible to better distribute residual stresses in the thickness of the pla ¬ band, on the model of FIG. 2, conversely of known linear type profiles which mainly have a planar resorbant effect of symmetrical type constraints on the thickness of the band to be hovered and therefore can not rebalance an asymmetric constraint. Several advantageous embodiments of the planer ¬ according to the invention are thus possible, depending on the desired qualitative requirements. A set of subclaims presents these modes and also complementary advantages of the invention.
Des exemples de réalisation et d'application sont fournis à l'aide de figures décrites : Examples of implementation and application are provided using the figures described:
Figure 3 Premier mode de réalisation de planeuse selon Figure 3 First embodiment of planeuse according to
1 ' invention, Figure 4 Profil d'imbrication selon figure 3, Figure 5 Second et troisième modes de réalisation The invention, Figure 4 Nesting Profile according to Figure 3, Figure 5 Second and Third Embodiments
planeuse selon l'invention,  planeuse according to the invention,
Figure 6 Profil d' imbrication selon le second mode Figure 6 Second Mode Nesting Profile
réalisation, Figure 7 Profil d' imbrication selon le troisième mode de réalisation.  embodiment, Figure 7 Nesting profile according to the third embodiment.
Figure 3 présente un premier mode de réalisation de la pla- neuse d'une bande métallique (B) selon l'invention et sous une vue de côté (opérateur par exemple) . La bande possède une épaisseur soumise à un profil de contraintes telle que dé¬ crite précédemment en relation avec la figure 1. La bande possède aussi des défauts de planéité quelconque. Figure 3 shows a first embodiment of the flattener of a metal strip (B) according to the invention and in a side view (operator for example). The strip has a thickness subjected to a stress profile as de ¬ written previously in relation to Figure 1. The tape also has defects in any flatness.
Ladite planeuse comprend : Said planer comprises:
- une rangée de rouleaux supérieurs (1, 3, 5, 7, 9...) et une rangée de rouleaux inférieurs (2, 4, 6, 8, 10...), les dits rouleaux étant des rouleaux de planage ou de dressage en con¬ tact avec la bande, - A row of upper rollers (1, 3, 5, 7, 9 ...) and a row of lower rollers (2, 4, 6, 8, 10 ...), said rollers being planing rollers or dressage con ¬ tact with the web,
- les rouleaux supérieurs et inférieurs sont à axes paral¬ lèles, décalés longitudinalement selon une direction de ligne de passe (lp) et décalés en hauteur, de façon à déterminer, par imbrication verticale des rouleaux, un trajet ondulé de la bande entre les dits rouleaux, - the upper and lower rollers are paral axes ¬ Lele, longitudinally offset in a pass line direction (lp) and offset in height, so as to determine, by vertically overlapping rollers, an undulating path of the strip between said rolls
- au moins deux rouleaux supérieurs (1, 3) et deux rouleaux inférieurs (2, 4) sont disposés au-dessus et respectivement au-dessous de la ligne de passe, de sorte qu'ils forment trois écarts d'imbrication verticale, les dits écarts ayant un profil de valeurs non-linéaires d' imbrication plus préci- sèment décrit par la figure 4. Figure 4 présente selon figure 3 les dits écarts ayant un profil (en trait continu) de valeurs (Imbr) non-linéaires d' imbrication de type soit convexe soit concave par rapport à un profil (en pointillés) de valeurs d'imbrication linéaire (Imbr_lin) suivant la direction de ligne de passe (rouleaux 1 à 16 dans le cas présent) . at least two upper rollers (1, 3) and two lower rollers (2, 4) are arranged above and respectively below the pass line, so that they form three vertical nesting gaps; said deviations having a profile of nonlinear imbrication values more precisely described in FIG. 4. FIG. 4 shows, according to FIG. 3, the said deviations having a profile (in continuous line) of nonlinear values of imbrication of either convex or concave type relative to a profile (in dotted lines) of linear nesting values ( Imbr_lin) following the direction of line (rolls 1 to 16 in this case).
Dans le cas de la figure 3 et 4 et selon le premier mode de réalisation de la planeuse selon l'invention, les deux rouleaux supérieurs et les deux rouleaux inférieurs sont dispo¬ sés (1, 2, 3, 4) dans un premier ensemble de planage (pli) comprenant pour chacun des rouleaux un réglage individuel vertical (vl, v2, v3, v4) par rapport à un bâti, une poutre, une cassette ou tout autre élément de maintien compris dans la planeuse à cet effet. Idéalement, le réglage d'au moins un des rouleaux comprend au moins un vérin. In the case of Figure 3 and 4 and according to the first embodiment of the leveler according to the invention, the two upper and the two lower rollers rollers are available ¬ SES (1, 2, 3, 4) in a first set planing device (fold) comprising for each of the rollers a vertical individual adjustment (v1, v2, v3, v4) relative to a frame, a beam, a cassette or any other holding element included in the planer for this purpose. Ideally, the adjustment of at least one of the rollers comprises at least one jack.
Les premiers rouleaux de la planeuse compris dans le premier ensemble de planage (pli) permettent d'assurer en principe la majeure partie de l'allongement de la bande pour corriger des défauts de planéité et des contraintes. The first rollers of the planer included in the first set of planing (fold) ensure in principle most of the elongation of the band to correct flatness defects and stresses.
La planeuse peut comprendre complémentairement au moins un deuxième ensemble de planage (pl2) respectivement formé par une cassette supérieure (Cl) et une cassette inférieure (C2) de planeuse de type multi-rouleaux (5, 6, 7, 8,...) . Cette con¬ figuration est particulièrement adaptée au planage des aciers dits « fer blanc », par exemple propices à la fabrication d'emballages métalliques. The planer may additionally comprise at least one second leveling assembly (pl2) respectively formed by an upper cassette (C1) and a lower cassette (C2) of multi-roll type planer (5, 6, 7, 8, ... ). This con ¬ figuration is particularly suitable for the planing of steels known as "tinplate", for example suitable for the manufacture of metal packaging.
Dans le cas des figures 3 et 4, seuls les écarts de type non- linéaires pour obtenir le profil d' imbrication de forme con¬ vexe ou concave sont établis par imbrication des rouleaux du premier ensemble de planage (pli), permettant ainsi de com¬ penser des déséquilibres de contraintes asymétriques. In the case of Figures 3 and 4, only the non-linear type of deviations to obtain the profile nesting con vex or concave form ¬ are established by imbrication of the rollers of first set of planing (fold), thus com ¬ think asymmetric stress imbalances.
Généralement, au moins une des cassettes (Cl, C2) du deuxième ensemble de planage (pl2) est inclinée par des moyens de dé¬ placement verticaux (v2hg, v2hd, v2bg, v2bd) , de sorte que les cassettes sont disposées sous un angle ouvert dans un plan vertical selon la direction de passe. Ceci permet de di¬ minuer l'imbrication des rouleaux progressivement et linéai- rement dans le cas des figures 3 et 4 ou comme dans l'état de l'art, en favorisant ainsi une diminution de contraintes de bande, excepté les contraintes asymétriques. Generally, at least one of the cassettes (Cl, C2) of the second set of leveling (pl2) is inclined by means of ¬ vertical placement (v2hg, v2hd, v2bg, v2bd) so that the cassettes are disposed at an angle open in a vertical plane according to the direction of pass. This allows di ¬ minuer nesting progressively rolls and straight-line basis in the case of Figures 3 and 4 or as in the prior art, thus favoring a decrease of band stresses, except the asymmetrical stresses.
Figures 5 à 7 présentent enfin un deuxième et un troisième modes de réalisation de la planeuse selon l'invention. Figures 5 to 7 finally show a second and a third embodiment of the planer according to the invention.
A partir de la figure 5, le second mode de réalisation de la planeuse selon l'invention prévoit que la planeuse est uni¬ quement composée du deuxième ensemble de planage de type mul- ti-rouleaux (premier ensemble de planage absent ou inactif) . Ce type de planeuse multi-rouleaux comprend généralement un nombre élevé de rouleaux (15 ou plus), et présente l'avantage de pouvoir résorber de gros défauts de planéité et con¬ trainte . From Figure 5, the second embodiment of the planer according to the invention provides that the planer is uni ¬ cally composed of the second set of planing mulit-roller type (first set of planing absent or inactive). This type of multi-roll leveler typically includes a large number of rollers (15 or more), and has the advantage to be able to absorb large unevenness and con ¬ constraint.
Dans ce cas, le profil de valeurs non-linéaires d'imbrication est appliqué à au moins quatre rouleaux du deuxième ensemble de planage (pl2), par exemple, au moyen des deux rouleaux su¬ périeurs (5, 7) et des deux rouleaux inférieurs (6, 8) qui sont disposés dans (au moins) le deuxième ensemble de planage (pl2) respectivement formé par une cassette supérieure (Cl) et une cassette inférieure (C2) de planeuse de type multi- rouleaux, avec au moins une desdites cassettes comprenant pour chacun des rouleaux un réglage individuel vertical (r5, r7 ; r6, r8, ...) des rouleaux par rapport aux cassettes, idéa- lement le réglage comprenant au moins un actuateur de type mécanique ou servomoteur. In this case, the non-linear imbrication value profile is applied to at least four rolls of the second leveling assembly (pl2), for example, by means of the two rollers su ¬ iors (5, 7) and the two rollers lower (6, 8) which are arranged in (at least) the second leveling assembly (pl2) respectively formed by an upper cassette (C1) and a lower cassette (C2) of multi-roll type planer, with at least one said cassettes comprising for each of the rollers a vertical individual adjustment (r5, r7; r6, r8, ...) of the rolls with respect to the cassettes, ideally the setting comprising at least one actuator of mechanical type or servomotor.
Figure 6 présente un exemple de profil de valeurs non- linéaires d'imbrication (Imbr) de forme ici convexe et appli¬ qué aux rouleaux (5, 6, 7, 8, etc.) du seul deuxième ensemble de planage (pl2) présenté en figure 5 pour ce second mode de réalisation, le premier ensemble de planage étant non présent ou inactif. Figure 6 shows an example of nonlinear profile nesting values (IMBR) of convex shape and here app ¬ the rollers (5, 6, 7, 8, etc.) of one second set of leveling (pl2) presented in FIG. 5 for this second embodiment, the first leveling assembly being not present or inactive.
A partir de la figure 5, le troisième mode de réalisation de la planeuse selon l'invention prévoit finalement que la pla- neuse est à nouveau composée du premier et du deuxième en¬ sembles de planage (pli, pl2) . A cet effet, au moins les deux rouleaux supérieurs et deux rouleaux inférieurs liés au pro¬ fil de valeurs non-linéaires d' imbrication sont distribués ou répartis dans le premier ensemble et dans le deuxième en¬ semble. A titre d'exemple, il est possible de générer un pro¬ fil de valeurs non-linéaires d' imbrication sur les quatre rouleaux (1, 2, 3, 4) du premier ensemble de planage (pli) et également sur un, deux, trois, quatre ou plus de rouleaux (5, 6, 7, 8, ...) du deuxième ensemble de planage (pl2) . From Figure 5, the third embodiment of the planer according to the invention finally provides that the platen is again composed of the first and second plan¬ ¬ planing (fold, pl2). For this purpose, at least the two upper rollers and two lower rollers connected to the pro ¬ thread of nonlinear imbrication values are distributed or distributed in the first set and in the second ¬ seems. By way of example, it is possible to generate a pro ¬ thread of non-linear nesting values on the four rollers (1, 2, 3, 4) of the first planing set (fold) and also on one, two , three, four or more rollers (5, 6, 7, 8, ...) of the second planing assembly (p12).
Cet exemple de deux profils (Imbr) se succédant selon la ligne de passe est représenté en figure 7, sous la forme d'un premier profil convexe pour les rouleaux (1, 2, 3, 4) suivi d'un second profil concave pour les rouleaux (5, 6, 7, 8, etc.) par rapport respectivement à chacun des deux profils successifs linéaires (Imbr_lin) d'imbrication usuelle de l'état de l'art. This example of two profiles (Imbr) succeeding one another according to the pass line is represented in FIG. 7, in the form of a first convex profile for the rollers (1, 2, 3, 4) followed by a second concave profile for the rollers (5, 6, 7, 8, etc.) with respect to each of the two successive linear profiles (Imbr_lin) of usual nesting of the state of the art respectively.
Alors que les rouleaux du deuxième ensemble de planage (pl2) permettaient dans l'état de l'art de limiter les contraintes résiduelles générées par une imbrication de planage linéaire et décroissante pour compenser des contraintes induites dans le produit, l'application de profils de valeurs non-linéaire d'imbrication (convexe et/ou concave) selon figure 5 autour desdits profils linéaires amènent à fort avantageusement com¬ penser complémentairement des asymétries de contraintes dans l'épaisseur du produit. Par application du profil de valeurs non-linéaire d' imbrication sur des rouleaux du deuxième en¬ semble de planage (pl2) additionnellement aux rouleaux du premier ensemble de planage (pli), il est possible d'obtenir une résorption accrue des contraintes asymétriques couplée à une possibilité avantageuse d'utiliser au moins un, deux, trois ou plus des premiers rouleaux du deuxième ensemble de planage (pl2) afin d'accentuer (deuxième mode de réalisation) ou de poursuivre (troisième mode de réalisation) une opéra¬ tion d'allongement de ladite bande possédant des caractéris- tiques ne permettant pas au seul premier ensemble de planage (pli) d'effectuer l'allongement suffisant. Pour ce faire, les dits premiers rouleaux (selon la direction de passe de bande) du deuxième ensemble de planage (pl2) sont disposés sous des valeurs non-linéaires d' imbrication de forme concave ou con- vexe, les dites valeurs d'imbrication non-linéaires étant su¬ périeures aux valeurs linéaires d'imbrication (Imbr_lin). Un tel profil avantageux de valeurs non-linéaires d' imbrication est explicitement représenté aux figures 6 et 7. Pour tous les modes de réalisation présentés (figures 3 à 7), une planeuse existante peut aussi être adaptée aisément et économiquement pour répondre aux caractéristiques et avan¬ tages de la planeuse selon l'invention, sachant que : Whereas the rollers of the second planing assembly (pl2) made it possible in the state of the art to limit the residual stresses generated by linear and decreasing planar nesting to compensate for stresses induced in the product, the application of profiles of nonlinear imbrication values (convex and / or concave) according to FIG. 5 around said linear profiles leads to very advantageously complementarily com¬ think stress asymmetries in the thickness of the product. By applying the profile to non-linear values nesting on rollers in the second ¬ seems leveling (pl2) additionally to the rollers of the first set of leveling (pli), it is possible to obtain increased absorption of asymmetrical stresses coupled to an advantageous possibility of using at least one, two, three or more of the first rolls of the second leveling assembly (pl2) in order to accentuate (second embodiment) or to continue (third embodiment) an operation ¬ tion lengthening said strip having features that do not allow the single first planing assembly (ply) to perform sufficient elongation. To do this, said first rollers (in the bandpass direction) of the second planar assembly (p12) are arranged under non-linear nesting values of concave or convex shape, said nesting values nonlinear being able ¬ périeures linear values nesting (Imbr_lin). Such an advantageous profile of nonlinear nesting values is explicitly shown in FIGS. 6 and 7. For all the embodiments presented (FIGS. 3 to 7), an existing planer can also be adapted easily and economically to meet the characteristics and ¬ advan tages of the leveler according to the invention, whereby:
- les moyens de déplacements verticaux (vl, v2, v3, v4) du premier ensemble de planage (pli) sont présents dans une planeuse existante comprenant le dit premier ensemble ; the vertical displacement means (v1, v2, v3, v4) of the first planing set (fold) are present in an existing planer comprising said first set;
- des moyens de déplacements verticaux (r5, r6, r7, r8...) peuvent être prévus ou insérés sur des cassettes exis¬ tantes du second ensemble de planage (pl2) . Enfin, également pour tous les modes de réalisation présentés (figures 3 à 7), la planeuse selon l'invention présente les caractéristiques et avantages suivant : - Vertical displacement means (r5, r6, r7, r8 ...) may be provided or inserted on cassettes exis ¬ aunts of the second leveling assembly (pl2). Finally, also for all the embodiments presented (FIGS. 3 to 7), the planer according to the invention has the following characteristics and advantages:
- le deuxième ensemble de planage (pl2) de type multi- rouleaux comprend plusieurs couples de cassettes supé¬ rieure et inférieure se succédant selon la ligne de passe, afin de générer dans un premier couple de cas- settes de plus forts effets d'allongement (planage) et de générer dans un second couple de cassettes de plus faibles effets d'allongement (dressage). L'ensemble de ces couples de cassettes permettent de moduler et d'élargir la gamme des valeurs d'imbrication non- linéaire pour des contraintes très asymétriques ; - the second set of leveling (pl2) type multi rollers comprises several pairs of Supé cassettes ¬ higher and lower succeeding according to the pass line, in order to generate a first pair of tapes stronger elongation effects (planing) and generate in a second pair of cassettes of weaker elongation effects (dressage). All these pairs of cassettes make it possible to modulate and widen the range of nonlinear nesting values for very asymmetrical constraints;
- le profil de valeurs d'imbrication linéaire (Imbr_lin) selon la direction de ligne de passe est décroissant de¬ puis une entrée vers une sortie d'au moins une portion de planage de bande suivant ladite ligne de passe et le profil de valeurs non-linéaires d'imbrication avoisine ou intersecte le profil de valeur d' imbrication li¬ néaire, de sorte que les effets de résorption de con¬ traintes résiduelles (hors contraintes asymétrie résor¬ bées par l'invention) soient toujours conservés ; the profile of linear nesting values (Imbr_lin) according to the direction of the line of the pass is decreasing by ¬ and then an entry to an output of at least one portion of band planing along said line of pass and the profile of non values nesting -linéaires near or intersects the value of profile nesting li ¬ néaire, so that the effects of resorption con ¬ residual constraints (reasury out constraints asymmetry ¬ quiet because by the invention) are always preserved;
- au moins deux tensionneurs sont disposés en amont et respectivement en aval d' au moins un groupe de rouleaux supérieurs et inférieurs, de sorte que la bande est sou¬ mise à une contrainte de traction ; - at least two tensioners are disposed upstream and downstream respectively of at least a group of upper and lower rollers, so that the strip is sou ¬ put to a tensile stress;
- mise à part le deuxième mode de réalisation, le deuxième ensemble de planage (pl2) comprend au moins 2,2 fois plus de rouleaux de planage que le premier ensemble de planage (pli), idéalement 2,5 à 6 fois plus, de sorte que si un planage plus intense (acier dur, sous très haute limite élastique) et au sens de l'invention est requis, il sera possible de ne pas devoir augmenter le nombre de rouleaux du premier ensemble de planage (pli) si ledit ensemble est présent ou actif, mais plutôt si nécessaire d'augmenter le nombre de rouleaux du deuxième ensemble de planage (pl2), en particulier aussi le nombre de ses rouleaux (5, 6, 7, 8, ) sous profil de valeurs non-linéaires d'imbrication lors d'un changement ou maintenance de cassettes ; apart from the second embodiment, the second leveling assembly (pl2) comprises at least 2.2 times more planing rolls than the first leveling set (ply), ideally 2.5 to 6 times more, of so that if a more intense planing (hard steel, under very high elastic limit) and within the meaning of the invention is required, it will be possible not to have to increase the number of rollers of the first leveling set (fold) if said assembly is present or active, but rather if necessary to increase the number of rollers of the second leveling set (pl2), in particular also the number of its rollers (5, 6, 7, 8,) in the form of nonlinear nesting values when changing or maintaining cassettes;
les modes de réalisation de planeuse selon l'invention peuvent être avantageusement contrôlés par une unité de commande de type automate ou/et apte à être contrôlée par un opérateur, ladite unité ayant un support de don¬ nées comprenant différents modèles de profil de con¬ trainte en fonction des propriétés mécaniques de divers matériaux de bande à planer et apte à sélectionner un parmi des modèles de planage associés présentant diffé¬ rents profils de valeurs non-linéaires d' imbrication sous forme de signaux de commandes transmis à des ac- tionneurs de réglage vertical (vl,v2... ; r5, r6...) des rouleaux successifs de planage. Il en ressort qu'un pro¬ ducteur de produits planés pourra plus facilement étendre sa gamme de produit tout en garantissant une haute qualité de produit, en particulier par des con¬ traintes asymétriques avantageusement compensées ; the planer embodiments according to the invention can be advantageously controlled by a control unit of the automaton type and / or able to be controlled by an operator, said unit having a support of don ¬ born including different models of con ¬ profile constraint depending on the mechanical properties of different strip materials to hover and capable of selecting one of the leveling models associated with dif ¬ ent profiles of non-linear values nesting in the form of control signals transmitted to tionneurs of ac- vertical adjustment (v1, v2 ...; r5, r6 ...) of the successive planing rollers. It shows a ¬ ducer of flat products might more easily to extend its product range while ensuring high quality of product, in particular by asymmetric ¬ con straints advantageously compensated;
Enfin, les modes de réalisation de planeuse selon l'invention prévoient avantageusement que côté opérateur au moins trois écarts verticaux entre des premiers couples de rouleaux successifs supérieur et inférieur ont un premier profil de valeurs non-linéaires Finally, the planer embodiments according to the invention advantageously provide that on the operator side at least three vertical gaps between first pairs of successive upper and lower rollers have a first profile of non-linear values.
d' imbrication et côté moteur au moins trois écarts ver¬ ticaux entre des seconds couples de rouleaux successifs supérieur et inférieur ont un second profil de valeurs non-linéaires d' imbrication divergeant du premier pro¬ fil, les premiers et les seconds couples de rouleaux étant soit rattachés aux mêmes rouleaux soit composés de rouleaux distincts. Ce double-profil de valeurs non- linéaires d' imbrication permet fort avantageusement de compenser des divergences d' asymétries des contraintes transversales du produit. of nesting and motor side at least three vertical deviations ¬ between second pairs of successive upper and lower rollers have a second profile of nonlinear values of nesting diverging from the first pro ¬ wire, the first and second pairs of rollers. being either attached to the same rolls or composed of separate rolls. This double-profile of non- Linear nesting allows very advantageously compensate divergences of asymmetries transverse stresses of the product.

Claims

Revendications claims
1. Planeuse de bande métallique (B) , ladite bande possédant une épaisseur (e) soumise à un profil de contraintes, ladite planeuse comprenant : 1. Metal strip planer (B), said strip having a thickness (e) subjected to a stress profile, said planer comprising:
- une rangée de rouleaux supérieurs (1, 3, 5, 7, 9...) et une rangée de rouleaux inférieurs (2, 4, 6, 8, 10...), a row of upper rollers (1, 3, 5, 7, 9 ...) and a row of lower rollers (2, 4, 6, 8, 10 ...),
- les rouleaux supérieurs et inférieurs sont à axes pa¬ rallèles, décalés longitudinalement selon une direction de ligne de passe (lp) et décalés en hauteur, de façon à déterminer, par imbrication verticale des rouleaux, un trajet ondulé de la bande entre les dits rouleaux, caractérisée en ce que - the upper and lower rollers are axes pa ¬ rallèles, longitudinally offset in a pass line direction (lp) and offset in height, so as to determine, by vertically overlapping rollers, an undulating path of the strip between said rollers, characterized in that
au moins deux rouleaux supérieurs ([1, 3] ; [5, 7]) et deux rouleaux inférieurs ([2, 4] ; [6, 8]) sont disposés au-dessus et respectivement au-dessous de la ligne de passe, de sorte qu'ils forment trois écarts  at least two upper rollers ([1, 3], [5, 7]) and two lower rollers ([2, 4], [6, 8]) are arranged above and below the pass line respectively , so that they form three gaps
d'imbrication verticale, les dits écarts ayant un profil de valeurs (Imbr) non-linéaires d'imbrication de type soit convexe soit concave par rapport à un profil de va¬ leurs linéaires d'imbrication (Imbr_lin) suivant la di¬ rection de ligne de passe. vertical nesting, the said deviations having a profile of nonlinear imbrication values (Imbr) of type is convex or concave with respect to a profile of va ¬ their linear nesting (Imbr_lin) following the di ¬ tion of pass line.
2. Planeuse selon revendication 1, pour laquelle les deux rouleaux supérieurs (1, 3) et les deux rouleaux infé¬ rieurs (2, 4) sont disposés dans un premier ensemble de planage (pli) comprenant pour chacun des rouleaux un ré¬ glage individuel vertical (vl, v2, v3, v4) . 2. Leveling according to claim 1 wherein the two upper rolls (1, 3) and the two rollers NCI ¬ laughing (2, 4) are arranged in a first set of leveling (pli) comprising for each roller a re ¬ SETTING individual vertical (v1, v2, v3, v4).
3. Planeuse selon revendication 1 ou 2, pour laquelle les deux rouleaux supérieurs (5, 7) et les deux rouleaux in¬ férieurs (6, 8) sont disposés dans au moins un deuxième ensemble de planage (pl2) respectivement formé par une cassette supérieure (Cl) et une cassette inférieure (C2) de planeuse de type multi-rouleaux, avec au moins une desdites cassettes comprenant pour chacun des rouleaux un réglage individuel vertical (r5, r7 ; r6, r8) des rouleaux par rapport aux cassettes, idéalement le ré¬ glage comprenant au moins un actuateur de type mécanique ou servomoteur. 3. Leveling according to claim 1 or 2, wherein the two upper rollers (5, 7) and the two rollers in ¬ férieurs (6, 8) are arranged in at least a second set of leveling (pl2) respectively formed by a cassette (C1) and a lower cassette (C2) of a multi-roll type planer, with at least one said cassettes comprising for each roller a vertical individually controlled (r5, r7, r6, r8) of the rollers relative to the cassette, ideally re ¬ SETTING comprising at least one actuator or mechanical actuator types.
Planeuse selon revendication 2 ou 3, pour laquelle au moins les deux rouleaux supérieurs et deux rouleaux in¬ férieurs sont répartis dans le premier ensemble et dans le deuxième ensemble Leveler according to claim 2 or 3, wherein at least two upper rollers and two rollers in ¬ férieurs are distributed in the first set and the second set
Planeuse selon revendication 3 ou 4, pour laquelle les dits premiers rouleaux du deuxième ensemble de planage (pl2) sont disposés sous des valeurs non-linéaires d'imbrication de forme concave ou convexe, les dites va¬ leurs non-linéaires d' imbrication étant supérieures aux valeurs linéaires d'imbrication (Imbr_lin). Leveler according to claim 3 or 4, wherein said first rollers of the second set of leveling (pl2) are arranged in non-linear values nesting of concave or convex shape, said ¬ will their non-linear of nesting being greater than the linear nesting values (Imbr_lin).
Planeuse selon une des revendications 3 à 5, pour la¬ quelle le deuxième ensemble (pl2) comprend plusieurs couples de cassettes supérieure et inférieure se succé¬ dant selon la ligne de passe. Planer according to one of claims 3 to 5, for ¬ which the second set (pl2) comprises several pairs of upper and lower cassettes succeeding ¬ dant according to the pass line.
Planeuse selon une des revendications 1 à 6, pour la¬ quelle le profil de valeurs d' imbrication linéaire Planer according to one of claims 1 to 6, for the ¬ which the profile of values of linear nesting
(Imbr_lin) selon la direction de ligne de passe est décroissant depuis une entrée vers une sortie d'au moins une portion de planage de bande suivant ladite ligne de passe . (Imbr_lin) in the direction of the pass line is decreasing from an input to an output of at least one band leveling portion following said pass line.
Planeuse selon une des revendications 1 à 7, pour la¬ quelle au moins deux tensionneurs sont disposés en amont et respectivement en aval d' au moins un groupe de rou¬ leaux supérieurs et inférieurs, de sorte que la bande est soumise à une contrainte de traction. Planeuse selon une des revendications 2 à 8, pour la¬ quelle le deuxième ensemble de planage (pl2) comprend a moins 2,2 fois plus de rouleaux de planage que le pre¬ mier ensemble de planage (pli), idéalement 2,5 à 6 fois plus Planer according to one of claims 1 to 7, for the ¬ which at least two tensioners are arranged upstream and respectively downstream of at least one group of rou roueaux ¬ upper and lower, so that the band is subjected to a stress of traction. Leveler according to one of Claims 2 to 8, for the second set of any ¬ leveling (pl2) comprises a least 2.2 times more leveling rolls the pre ¬ Mier set of leveling (pli), ideally 2.5 to 6 times more
Planeuse selon une des revendications 1 à 9, contrôlée par une unité de commande de type automate ou/et apte à être contrôlée par un opérateur, ladite unité ayant un support de données comprenant différents modèles de pro fil de contrainte en fonction des propriétés mécaniques de divers matériaux de bande à planer et apte à sélec¬ tionner un parmi des modèles de planage associés présen tant différents profils de valeurs non-linéaires d' imbrication sous forme de signaux de commandes trans¬ mis à des actionneurs de réglage vertical (vl,v2... ; r5, r6...) des rouleaux successifs de planage. Planer according to one of claims 1 to 9, controlled by a control unit of the automaton type and / or capable of being controlled by an operator, said unit having a data carrier comprising different models of stress profile as a function of the mechanical properties of various strip materials to hover and capable of selec ¬ OPERATE one of skimming models associated presen as different profiles of non-linear values nesting in the form of control signals trans ¬ made of vertical adjustment actuators (vl, v2 ...; r5, r6 ...) successive planing rollers.
Planeuse selon une des revendications 1 à 10, pour la¬ quelle côté opérateur au moins trois écarts verticaux entre des premiers couples de rouleaux successifs supé¬ rieur et inférieur ont un premier profil de valeurs non linéaires d' imbrication et côté moteur au moins trois écarts verticaux entre des seconds couples de rouleaux successifs supérieur et inférieur ont un second profil de valeurs non-linéaires d' imbrication divergeant du premier profil, les premiers et les seconds couples de rouleaux étant soit rattachés aux mêmes rouleaux soit composés de rouleaux distincts. Leveler according to one of claims 1 to 10 for the ¬ any operator side at least three vertical gaps between the first pairs of successive rollers Supé ¬ laughing and less have a first profile of non-linear values nesting and motor side at least three standard deviations vertical members between second pairs of successive upper and lower rollers have a second profile of nonlinear imbrication values diverging from the first profile, the first and second pairs of rollers being either attached to the same rollers or composed of separate rollers.
EP18738359.1A 2017-08-04 2018-07-17 Multi-roller flattener of a metal strip Active EP3661669B8 (en)

Priority Applications (2)

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PL18738359T PL3661669T3 (en) 2017-08-04 2018-07-17 Multi-roller flattener of a metal strip
RS20211292A RS62458B1 (en) 2017-08-04 2018-07-17 Multi-roller flattener of a metal strip

Applications Claiming Priority (2)

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EP17290100.1A EP3437749A1 (en) 2017-08-04 2017-08-04 Multi-roller flattener of a metal strip
PCT/EP2018/069394 WO2019025179A1 (en) 2017-08-04 2018-07-17 Multi-roll metal strip leveller

Publications (3)

Publication Number Publication Date
EP3661669A1 true EP3661669A1 (en) 2020-06-10
EP3661669B1 EP3661669B1 (en) 2021-09-01
EP3661669B8 EP3661669B8 (en) 2021-10-06

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EP (2) EP3437749A1 (en)
JP (1) JP7071011B2 (en)
KR (1) KR102606762B1 (en)
CN (1) CN110914005B (en)
BR (1) BR112020001276B1 (en)
ES (1) ES2899672T3 (en)
MX (1) MX2020001331A (en)
PL (1) PL3661669T3 (en)
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WO (1) WO2019025179A1 (en)

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CN111842547B (en) * 2020-07-17 2022-03-22 太原科技大学 Novel method for straightening metal plate with tension-compression asymmetry

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ES2899672T3 (en) 2022-03-14
BR112020001276B1 (en) 2023-02-07
KR20200037223A (en) 2020-04-08
MX2020001331A (en) 2020-03-20
KR102606762B1 (en) 2023-11-24
JP7071011B2 (en) 2022-05-18
US20200171559A1 (en) 2020-06-04
EP3437749A1 (en) 2019-02-06
JP2020534157A (en) 2020-11-26
CN110914005B (en) 2022-03-11
WO2019025179A1 (en) 2019-02-07
CN110914005A (en) 2020-03-24
RS62458B1 (en) 2021-11-30
BR112020001276A2 (en) 2020-07-21
EP3661669B1 (en) 2021-09-01
PL3661669T3 (en) 2022-01-17
EP3661669B8 (en) 2021-10-06

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