EP0707902B1 - Installation de laminage - Google Patents
Installation de laminage Download PDFInfo
- Publication number
- EP0707902B1 EP0707902B1 EP95402229A EP95402229A EP0707902B1 EP 0707902 B1 EP0707902 B1 EP 0707902B1 EP 95402229 A EP95402229 A EP 95402229A EP 95402229 A EP95402229 A EP 95402229A EP 0707902 B1 EP0707902 B1 EP 0707902B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chock
- roll
- chocks
- rolling mill
- rolls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005096 rolling process Methods 0.000 title claims description 63
- 238000009434 installation Methods 0.000 title description 4
- 230000000694 effects Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims 1
- 239000000543 intermediate Substances 0.000 description 42
- 238000005452 bending Methods 0.000 description 16
- 210000005069 ears Anatomy 0.000 description 7
- 230000000670 limiting effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 235000013330 chicken meat Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B2031/206—Horizontal offset of work rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/203—Balancing rolls
Definitions
- the subject of the invention is an installation for rolling a flat product such as a metal strip ferrous or non-ferrous and can be applied to rolling hot or cold.
- a rolling mill generally includes a set of superimposed cylinders placed inside a fixed support cage having two uprights apart in which openings or "windows" are provided having two vertical parallel sides.
- the axes of all the cylinders are placed, normally in the same clamping plane substantially perpendicular to the longitudinal axis of travel of the product and which generally coincides with a plan transverse median of the cage.
- Each cylinder is carried by a shaft having two ends rotatably mounted, through bearings, on two chocks strung, respectively in the two windows of the amounts of the cage.
- the rolling of the product is carried out by exerting a clamping force applied between the chocks of the support cylinders and transmitted to the product by the working cylinders.
- Each cylinder must therefore be able move vertically for tightening so that adapt to product thickness and variations in diameter resulting, for example, from wear.
- chocks of each cylinder have sliding faces cooperating with guide faces provided on both sides of each window.
- the guide faces of their chocks can be closer together and are generally spaced out protruding parts formed in the central part of every window.
- the cylinders must be capable of being changed either in case of wear or deterioration, or to use cylinders of different diameter.
- the cylinders can be introduced into the cage or removed from it by sliding, parallel to their axes, on rails fixed on the uprights of the cage and on which the chocks rest, for example by means of rollers.
- the chocks of the cylinders must therefore slide not only vertically, but also horizontally between the guide faces provided on both sides of the window.
- the working rolls are supported, on one side, on the product being scrolling and, on the other side, on a support cylinder or an intermediate cylinder and it follows that a even very slight misalignment of the axis of a cylinder of work in relation to the scroll direction of the product and to the axis of the corresponding support cylinder can result in an axial displacement effect of the cylinder which is pushed towards one of the uprights of the cage, the associated supporting cylinder being generally subjected to a axial displacement effect in the other direction.
- the cylinders are retained by axial stops, but there results, however, from friction with an effect hysteresis which can disturb the thickness control normally performed by the clamping system.
- This effect can be offset by giving support cylinders with a curved profile, possibly variable.
- arching is performed in both directions by double cylinders effect.
- each chock pushing means side consisting of cylinders or deformable faces arranged on both sides of the chock and taking support horizontally on the cage, each chock being thus secured with the corresponding amount by pushing side on both sides of the window (DE-A-3,807,654).
- the chocks are joined, in service, with the uprights of the cage, by support side on both sides of the window. Therefore, if one wishes to carry out a bending of the cylinders for compensate for bending, this effect should be set to advance, the spacing of the chocks cannot be changed during rolling.
- each chock is fitted with jacks bending and side jacks whose chambers are interconnected so that an increase in pressure in the direction corresponding to the spacing of chocks determines an increase in the effort of lateral thrust and therefore, blockage of the chock.
- the invention has subject to a new provision allowing make all the necessary adjustments to achieve rolling in the best conditions, even in progress rolling, immediately correcting any defects detected.
- the invention makes it possible to control strictly the position and, in particular, the parallelism of the axes of the cylinders, without ceasing to apply corrective efforts to arching one way or the other.
- the arrangements according to the invention also allow to bring to the positioning of chocks all the corrections needed to minimize breakouts axial, compensate for the bending of the support cylinders, and correct flatness defects.
- the invention therefore generally applies to a rolling plant for a flat product comprising a support cage comprising two uprights separated between which at least two are placed stacked working cylinders rotating respectively around axes placed substantially in a clamping plane perpendicular to the direction of travel of the product, and limiting a product air gap, and a cylinder clamping means resting on the cage fixed, each cylinder being carried by a shaft having two ends rotatably mounted, through bearings, respectively on two chocks threaded in two windows respectively in the two cage uprights and sliding mounted along fixed guide faces, parallel to the clamping plane P and provided on both sides of each window, games being left on either side of each chock to allow the assembly and disassembly of each cylinder with its chocks, each chock being associated to lateral thrust means against said faces of guide for taking up, in service, said games.
- each chock of a working cylinder is associated with two parts intermediaries interposed respectively between the two sides of chock and guide faces corresponding and on which means are mounted for bending working cylinders supported by the chocks at least in a positive direction of separation said chocks, said intermediate pieces being maintained applied with the possibility of sliding without play, parallel to the clamping plane, respectively along the guide faces window, and pushing means side are interposed between at least one of said intermediate pieces and the corresponding side of the chock so as to rest on the guide face corresponding to push back the chock, on the opposite side, against the other intermediate piece and the other face of guide, the latter constituting a retaining face permanent side for positioning the axis of the cylinder with possibility of sliding the chock with the two associated intermediate parts parallel to said lateral holding face, under the action of the cambering means.
- means adjustable thickness retainers are interposed between the minus the intermediate piece placed on the side opposite lateral thrust means and the side facing the chock, said retaining means defining, on each window, a virtual side support side china, the position of which can be adjusted by variation the thickness of said retaining means.
- each upright window has two sides flat guide, parallel to the clamping plane and each extending over the entire height of the window, so as to encompass the chocks from all the cylinders these last being associated each with two parts intermediates equipped with sliding retaining means without play along said guide faces and on which are mounted lateral thrust means constituting, on the one hand, a means of application and, the other, an adjustable means of chock retention corresponding.
- the two intermediate pieces placed on either side of the chock are associated, each with adjustable stroke thrust means interposed respectively between said piece intermediate and the side facing the chock, the pushing means placed on the side of the guide face against which the chock is applied being adjustable in position so as to define a virtual face of lateral support of the chock.
- the invention also relates to a method of placing using a rolling mill of this type.
- the rolling mill may be fitted with means for measuring the thrust axial exerted, in one direction or the other, by one either end of a cylinder on the upright cage and the respective positions of holding two virtual faces are determined by adjusting the retaining means, in function of the axial thrust measurement so that determine an orientation of the cylinder axis likely to cancel said measured axial thrust.
- the invention also covers many particularly advantageous construction arrangements which are the subject of the subclaims.
- a rolling stand 1 comprising two vertical uprights 11, 11 'apart, fixed on a box spring 10 or, directly, on a massif of foundation, and connected by a 10 'crossbar.
- the rolling mill is of the type Quarto and includes two working cylinders 2, 2 ', limiting an air gap in which the product passes to laminate M and taking support, respectively, on the side opposite the product M, each on a support cylinder 3, 3 '.
- Each working cylinder 2 is rotatably mounted on a central shaft having two rotating ends 21 respectively in aligned bearings 22 defining the axis of rotation x'x of the cylinder.
- the bearings 22 are mounted respectively in support chocks 4 which are inserted in windows 12 respectively provided in the two uprights 11 of cage 1.
- each support cylinder 3 is mounted rotatable around its axis y'y on a tree whose ends 31 rotate in bearings 32 mounted in chocks 5 threaded into the windows 12, the axes of all the cylinders being placed substantially in the same clamping plane P constituting a median plane of the cage.
- the rolling effort is exerted by means of tightening 14 such as screws or jacks, mounted on cage 1 and bearing on the chocks 5 of one of the cylinders support 3.
- the chocks To allow the cylinders to be tightened, the chocks must be slidably mounted along guide faces parallel to said plane P.
- the faces of guide work chocks are usually formed on projecting parts, the cylinders having a smaller diameter.
- each window 12 of the cage is limited by two flat faces 13a, 13b which extend over the entire height of the window so as to each constitute the same guide face for the chocks of all the cylinders.
- chocks 4 of working rolls and preferably chocks 5 support cylinders are each placed between two intermediate parts 6a, 6b, respectively 60a, 60b, which are applied and held against the faces of guide 13a, 13b of window 12 with a possibility of sliding without play.
- this game can be canceled by means of thrust 7 interposed between at least one of the parts intermediaries 6b and the face opposite the chock 4 so as to push it towards the guide face opposite 13a which therefore constitutes a retaining face permanent side of the corresponding cylinder 2.
- the sliding mounting of intermediate pieces 6a, 6b for guiding the chocks 4 working rolls 2 allows to place on them bending cylinders 81 of said cylinders 2 which are associated with oil supply means, the whole constituting a hydraulic camber block which, contrary to the usual arrangements, moves therefore with the chock along the guide faces 13a, 13b.
- roller or sliding systems which will be described in more detail below, referring to Figures 5 to 9.
- the jacks 70b interposed between each chock 4 and the intermediate piece 6b bear on it and the corresponding side 13b of the window to repel the chock 4 towards the opposite side 13a and therefore constitute the means of application of each chock 4 on the face guide 13a of the upright 11.
- the pressure exerted by the jacks 70b is, however, set to be only sufficient to cancel games, but limited enough to avoid a clamping of the chock on the amounts of the cage and thus allow the sliding of the intermediate parts 6a, 6b under the action of the cambering means 8.
- the cylinders 70a bearing on the intermediate part 6a can be adjusted in position so as to constitute a means of adjustable thickness retainer that adjusts the distance between the lateral side 41 of the chock 4 and the guide face 13a.
- the ends of the two jacks 70a facing the chock 4 define a face of virtual holding of the chock whose position can be adjusted by varying the stroke of the cylinders 70a.
- each cylinder could be applied against a plane of reference P1 defined by two fixed guide faces 13a, 13'a
- the rolling mill is of the "Quarto" type and therefore includes two working cylinders 2, 2 ', associated with two support cylinders 3, 3 ', whose axes are placed substantially in a vertical clamping plane P which constitutes a transverse median plane of the cage 1 of the rolling mill, this comprising two uprights 11, 11 ′, provided with windows 12, 12 ', into which are threaded the chocks of the different cylinders.
- the cylinders are tightened by a screw system or jacks 14 supported, in the example shown, on the chocks 5 of the support cylinder upper 3, while the chocks 5 'of the cylinder lower support are supported directly on the box spring 10.
- Each chock 4 of a working cylinder 2 is placed between two intermediate parts 6a, 6b, and is provided with two ears 42 on which are supported means for positive or negative cambering of the cylinder.
- These cambering means are constituted, as usually small cylinders housed, with their supply and discharge pipes, in the intermediate parts 6a, 6b, which thus constitute each a hydraulic camber block.
- each chock 4 is provided with two ears 42 which playfully engage in notches 62 provided respectively in the central part of each room intermediate 6a, 6b.
- Each intermediate piece 6 is provided, on its face side facing the chock, of two pairs of jacks 70 with horizontal axis, placed respectively above and below the notch 62 and bearing on the corresponding side face 41 of the chock 4.
- the jacks 70 placed on either side of chickens, act in opposite directions and can therefore be single acting.
- Supply lines which have not been shown in Figures 4 and 5, are arranged inside the intermediate parts 6 which thus constitute mobile hydraulic blocks.
- the horizontal thrusts exerted by the jacks 70 ensure a joining of each chock 4 with the intermediate pieces 6a, 6b, which surround it and therefore move vertically with the slate by sliding without play, along the faces of guide 13a, 13b, of the window 12.
- each intermediate piece 6 is provided on each side with two pairs of rollers 64 which are rotatably mounted around axes parallel to the axis of the cylinder and can roll on the guide faces 13a, 13b, formed along the two lateral sides of the window 12 and parallel to the clamping plane P.
- Each intermediate piece 6 can be kept applied against the amount 11, for example through hooks sliding in grooves.
- the clearance (e) which is left between the lateral sides 41 of each chock and the opposite faces 61 of each piece 6 can be relatively large, so that allow possible adjustments of the orientation of the axis x'x of the cylinder with respect to the guide faces 13.
- the chocks remain threaded on the pins and move with the cylinder while the intermediate parts 6a, 6b, are kept applied on the guide faces 13 of the cage by the pairs of rollers 64, 64 '.
- notches 62 should just be a slightly wider than the ears 42 of the chocks so to simply spare the game necessary for the engagement of ears 42 in the notches 62 during installation of the cylinder with its chocks inside the cage.
- camber cylinders are housed in bores formed on the intermediate parts associated with each work chock (4, 40).
- Camber cylinders negative (81, 81 ') which are supported, in a conventional manner, on the chocks 5, 50, support cylinders correspondents 3, 3 ', are thus housed in bores 63, 63 ', formed on the external side of each chock of work, respectively upper 4 and lower 40, facing the corresponding support slab 5, 50.
- Positive bending is done, in a way known, by cylinders 82 interposed between the two working chocks 4, 40.
- the positive cambering cylinders 82 are housed in bores 65 arranged on the internal side, facing the upper chock 4, of each intermediate piece 6 ' associated with the lower working chock 40.
- each cylinder 82 is supported on a pusher 83 which is slidably mounted vertically in a bore 66 crossing the lower part of the intermediate piece 6 of the upper chock 4 and which comes to bear on the corresponding ear 42 to apply it against the upper side of the notch 62 under the action of the cylinder 82, the intermediate piece 6 being held by the negative camber cylinders 81 which bear on the chock 5 of the upper support cylinder 3.
- a pusher 84 in the form of a jack, coaxial and opposite to the 81 'negative camber cylinder, both chambers cylinders 84, 81 ', communicating with each other.
- the pressure applied on cylinder 81 'for bending negative determines the lift of pusher 84 for the application of the ear 42 'against the upper side of the notch 62 'and the take-up of the game.
- the two play catch buttons 83, 84 are thus actuated by positive camber cylinders 82 and negative 81, 81 '.
- the positive 82 and negative camber cylinders 81, 81 ' are put under pressure and push back the pushers 83, 84, which apply each ear 42, 42 ', against the upper face of the corresponding notch 62, 62 '.
- the positive cambering cylinders 82 and negative 81, 81 ', as well as the pushers 83, 84, placed on each side of the chock are aligned, respectively, in two directions parallel to the plane P and equidistant from it.
- all cylinders are powered at the same time and therefore act in opposite directions by balancing each other.
- the support cylinders can be removed analogously, the corresponding intermediate parts 60a, 60b being supported by the cylinders 15, 15 '.
- the chocks 5, 50, support cylinders 3, 3 ' can be mounted in a conventional way in windows 12, 12 ', from the cage. In this case, the invention applies only at working cylinders 2, 2 '. Given that the horizontal push cylinders 70 are adjustable in position, it is possible, as we have seen, to adjust the positions of the virtual retaining faces to cancel the axial thrusts resulting from a possible offset angle of each working cylinder with respect to its support cylinder.
- each chock 5, 50 of a support cylinder 3, 3 ' is associated with two intermediate parts 60a, 60b, interposed between the lateral faces 51a, 51b, of the chock 5 and the guide faces 13a, 13b, of the upright 11 which extend practically over the entire height of the window 12.
- the cage 1 is also provided with two pairs of cylinders 15, 15 'allowing the height adjustment of the support cylinders 3, 3 'while maintaining the two pairs of chocks 5, 50, respectively, against the clamping system 14 and box spring 10.
- the chocks 5, 50, two support cylinders 3, 3 ' are each associated with two intermediate pieces 60a, 60b, similar to the pieces intermediaries 6a, 6b, working chocks 4 and on which are articulated the rods of the cylinders of holding 15, 15 '.
- the two intermediate parts 60a, 60b, surrounding each chock 5, 50 are each provided with two projecting parts 65 limiting a recess in which engages with play an ear 52 of the chock 5 to allow height adjustment of the cylinders at by means of the cylinders 15, 15 '.
- horizontal thrust cylinders 72 are housed in said projecting parts 65 and are supported on lateral faces 53 of the chock 5, on either side of the ear 52, so as to apply the chock 5 on one of the guide faces 13a taking support on the other face 13b, via parts 60a, 60b.
- the cylinders 72 are adjustable in position and therefore allow to define a virtual holding face serving as a reference for positioning, with possibility of sliding, of the y'y axis of the cylinder support 3.
- This provides flexible and precise means for maintain the alignment of the axis of each cylinder by compared to a reference plane and to adjust possibly the positioning of the cylinders compared to others.
- this positioning can be adjusted as a function of the axial force detected at the end of a cylinder. For example, if an axial force is detected exercised by a working cylinder on one side of the cage, the chocks for positioning the chock of the cylinder placed on the same side to move the axis in the opposite direction to rolling and we act in the opposite direction on the corresponding support cylinder, so as to cancel the axial force detected, the directions of action being reversed, for each of the two cylinders, on the other side of the cage.
- chocks for example to move the clamping plane passing through the axes of the working cylinders relative on the plane passing through the axes of the support cylinders, to adjust the alignment of a working cylinder-cylinder assembly support in relation to each other or else cross the clamping planes of the two sets.
- the rolling bearings of the parts intermediaries can be replaced by simple smooth, smooth sliding bearings, as shown in Figures 7, 8, 9.
- each intermediate piece 6 includes a sliding face 68 along the lateral face 13 of the upright 11, means lubrication not shown to ensure a soft glide.
- each chock can, so known, extend above or below the block hydraulic.
- the invention does not requires only fairly minor modifications to the cage and can therefore be easily adapted to any existing type of rolling mill.
- the arrangements described in as an example in the case of a Quarto rolling mill can be used in a Sexto rolling mill with intermediate cylinders interposed between each cylinder working and the support cylinder, or even in case each working cylinder is supported by a set of cylinders arranged on either side of the median plane.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims (23)
- Laminoir pour le laminage d'un produit plat défilant suivant une direction longitudinale, comprenant une cage de support fixe (1) comportant deux montants écartés (11, 11') entre lesquels sont placés au moins deux cylindres de travail superposés (2, 2') tournant respectivement autour d'axes placés sensiblement dans un plan de serrage (P) perpendiculaire à la direction de défilement du produit (M), et limitant un entrefer de passage du produit (M), et un moyen (14) de serrage des cylindres prenant appui sur la cage fixe (1), chaque cylindre (2, 2') étant porté par un arbre ayant deux extrémités montées rotatives, par l'intermédiaire de paliers, respectivement sur deux empoises (4, 40) enfilées dans deux fenêtres (12) ménagées respectivement dans les deux montants (11, 11') de la cage et montées coulissantes le long de faces fixes de guidage (13a, 13b), parallèles au plan de serrage (P) et ménagées sur les deux côtés de chaque fenêtre (12), des jeux étant laissés de part et d'autre de chaque empoise (4) pour permettre le montage et le démontage de chaque cylindre (2) avec ses empoises (4, 4'), chaque empoise étant associée à des moyens (7) de poussée latérale contre lesdites faces de guidage (13a, 13b) pour le rattrapage, en service, desdits jeux,
chaque empoise (4, 40) d'un cylindre de travail (2, 2') étant associée à deux pièces intermédiaires (6a, 6b) interposées respectivement entre les deux côtés de l'empoise (4) et les faces de guidage correspondantes (13a, 13b) et sur lesquelles sont montés des moyens (81, 81', 82-84) de cambrage des cylindres de travail caractérisé par le fait que les moyens (81, 81', 82-84) de cambrage des cylindres de travail prennent appui sur les empoises (4, 40) au moins dans un sens positif d'écartement desdites empoises (4, 40), que les lesdites pièces intermédiaires (6a, 6b) sont maintenues appliquées avec possibilité de coulissement sans jeu, parallèlement au plan de serrage (P), respectivement le long des faces de guidage (13a, 13b) correspondantes de la fenêtre (12), et que des moyens de poussée latérale (7) sont interposés entre au moins l'une desdites pièces intermédiaires (6b) et le côté correspondant de l'empoise (4) de façon à prendre appui sur la face de guidage correspondante (13b) pour repousser l'empoise (4), du côté opposé, contre l'autre pièce intermédiaire (6a) et l'autre face de guidage (13a), cette dernière constituant une face de maintien latéral permanent pour le positionnement de l'axe (x'x) du cylindre avec possibilité de coulissement de l'empoise (4) avec les deux pièces intermédiaires associées (6a, 6b) parallèlement à ladite face de maintien latéral (13a), sous l'action des moyens de cambrage (81, 81', 82-84). - Laminoir selon la revendication 1, caractérisé par le fait que des moyens de retenue (70a) d'épaisseur réglable sont interposés entre au moins la pièce intermédiaire (13a) placée du côté opposé aux moyens de poussée latérale (7) et le côté (41a) en vis-à-vis de l'empoise (4), lesdits moyens de retenue (70a) définissant, sur chaque fenêtre (12), une face virtuelle (AA') de maintien latéral de l'empoise (4) dont la position peut être réglée par variation de l'épaisseur desdits moyens de retenue (70a).
- Laminoir selon la revendication 2, caractérisé par le fait que les moyens de retenue sont constitués par des moyens de poussée (70) de course réglable, agissant suivant une direction perpendiculaire à la face de guidage (13) correspondante et prenant appui dans un sens sur l'empoise (4) et dans le sens opposé sur la pièce intermédiaire (6) correspondante.
- Laminoir selon la revendication 3, caractérisé par le fait que, les deux pièces intermédiaires (6a, 6b) placées de part et d'autre de l'empoise (4) sont associées, chacune, à des moyens de poussée (70a, 70b) de course réglable interposés respectivement entre ladite pièce intermédiaire (6a, 6b) et le côté en vis-à-vis (41a, 41b) de l'empoise (4), les moyens de poussée (70a) placés du côté de la face de guidage (13a) contre laquelle est appliquée l'empoise (4) étant réglables en position de façon à définir une face virtuelle de maintien latéral de l'empoise (4).
- Laminoir selon l'une des revendications 2 à 4, caractérisé par le fait qu'il comprend des moyens de mesure de la poussée axiale exercée, dans un sens ou dans l'autre, par l'une ou l'autre des extrémités d'un cylindre sur le montant (11) correspondant de la cage (1) et que les positions respectives des faces virtuelles de maintien des deux empoises sont déterminées par réglage des moyens de retenue (70a), en fonction de la mesure de la poussée axiale de façon à déterminer une orientation de l'axe (x'x) du cylindre (2) susceptible d'annuler ladite poussée axiale mesurée.
- Laminoir selon l'une des revendications précédentes, comprenant deux cylindres de travail (2, 2') associés chacun à au moins un cylindre d'appui (3, 3'), caractérisé par le fait que chaque fenêtre (12) d'un montant (11) est munie de deux faces de guidage planes (13a, 13b), parallèles au plan de serrage (P) et s'étendant chacun sur toute la hauteur de la fenêtre (12), de façon à englober les empoises (4, 40) (5, 50) de tous les cylindres (2, 2') (3, 3') ces dernières étant associées chacune à deux pièces intermédiaires (6a, 6b) (60a, 60b) équipées de moyens de maintien coulissant sans jeu (64) le long desdites faces de guidage (13a, 13b) et sur lesquelles sont montés des moyens (70) de poussée latérale constituant, d'un côté, un moyen d'application (70b) et, de l'autre, un moyen réglable de retenue (70a) de l'empoise correspondante (4, 40) (5, 50).
- Laminoir selon la revendication 6, caractérisé par le fait que les deux faces de guidage (13a, 13'a) contre lesquelles sont appliquées les deux empoises (4, 4') (5, 5') de chaque cylindre (2, 3) sont placées d'un même côté du plan de serrage (P) et définissent un plan de référence fixe (P1) pour le positionnement de l'axe (x'x, y'y) du cylindre (2, 3).
- Laminoir selon l'une des revendications précédentes, caractérisé par le fait que les moyens de maintien coulissant sans jeu de chaque pièce intermédiaire (6, 60) comprennent au moins deux galets (64) d'appui sur la face de guidage correspondante (13), placés sur deux niveaux écartés en hauteur et montés rotatif autour d'axes parallèles à l'axe du cylindre (2, 3), lesdits galets d'appui (64) étant associés à des galets de maintien (64') roulant sur des faces opposées de parties en saillie (16) ménagées respectivement sur les deux côtés de chaque face de guidage (13).
- Laminoir selon l'une des revendications 1 à 8, caractérisé par le fait que les moyens de maintien coulissant de chaque pièce intermédiaire (6, 60) sont constitués par une glissière (9) comportant au moins une face (91) d'appui glissant ménagée sur le côté de la pièce intermédiaire (6, 60) tourné vers la face de guidage (13) correspondante et associée à des moyens de formation d'un film lubrifiant, ladite pièce intermédiaire (6, 60) étant munie de deux pièces formant crochet (92) entourant deux parties en saillie (16) ménagées respectivement sur les deux côtés de chaque face de guidage (13) pour le maintien de la pièce intermédiaire (6, 60).
- Laminoir selon l'une des revendications précédentes, caractérisé par le fait que chaque empoise (4, 5) d'un cylindre (2, 3) est munie, sur ses deux côtés, respectivement, de deux oreilles latérales (42, 52) s'engageant avec jeu dans des encoches (62, 53) ménagées, respectivement, sur les deux pièces intermédiaires (6, 60) associées à l'empoise (4, 5) de façon à permettre le démontage du cylindre (2, 3) avec ces empoises (4, 5), les pièces de guidage (6, 60) restant solidarisées avec la cage (1).
- Laminoir selon la revendication 10, caractérisé par le fait que les deux pièces intermédiaires (6a, 6b) encadrant chaque empoise (4) d'un cylindre de travail (2) sont munies de moyens amovibles de solidarisation de ladite pièce intermédiaire avec l'oreille (42) correspondante de l'empoise (4) par rattrapage du jeu de l'encoche (62).
- Laminoir selon la revendication 11, caractérisé par le fait que les moyens de rattrapage de jeu sont des poussoirs (83, 84) montés coulissants, respectivement, dans les pièces intermédiaires (6, 6') associées, respectivement, aux empoises (4, 40) des deux cylindres de travail (2, 2') et actionnées, en service, par les moyens de cambrage (8) dans le sens d'application de l'oreille (42) correspondante de chaque empoise contre le côté opposé de l'encoche correspondante (62).
- Laminoir selon la revendication 12, caractérisé par le fait que les pièces intermédiaires (6, 6') associées, respectivement aux empoises (4, 40) des deux cylindres de travail (2, 2') portent des vérins (81) de cambrage négatif prenant appui, dans un sens sur la pièce intermédiaire (6, 6') et dans l'autre sur l'empoises (5, 50) du cylindre d'appui correspondant de façon à déterminer le rapprochement des empoises (4, 40) des deux cylindres de travail (2, 2').
- Laminoir selon la revendication 13, caractérisé par le fait que les moyens de cambrage positif sont constitués par des vérins (82) logés dans les pièces intermédiaires (6') associées aux empoises (40) d'un premier cylindre de travail (2') et prenant appui, dans le sens positif d'écartement des empoises (4, 40), sur un poussoir (83) monté coulissant dans l'empoise en vis-à-vis (4) du second cylindre de travail (2) et prenant appui lui-même sur l'oreille (42) correspondante, et les pièces intermédiaires (6'a, 6'b) associées à chaque empoise (40) du premier cylindre de travail (2') sont munies de poussoirs (84) actionnés par les vérins de cambrage négatif (81') de ladite empoise (40) et prenant appui sur les oreilles (42') de cette dernière pour le rattrapage du jeu de l'encoche (62').
- Laminoir selon la revendication 14, caractérisé par le fait que les vérins de cambrage positif (82) et négatif (81, 81') sont actionnés simultanément et que, après rattrapage des jeux dans les encoches (62, 53), l'effet de cambrage positif ou négatif est déterminé, en service, par réglage de différence de pressions d'alimentation entre les vérins de cambrage positif (82) et les vérins de cambrage négatif (81, 81'), les pièces intermédiaires (6, 6') associées aux empoises (4, 40) des cylindres de travail (2, 2') coulissant librement et les pièces intermédiaires (60, 60') associées aux empoises (5, 50) des cylindres d'appui (3,3') prenant appui sur la cage de telle sorte que les efforts de cambrage se referment sur celle-ci.
- Laminoir selon la revendication 15, caractérisé par le fait que les vérins de cambrage positifs (82), les deux poussoirs (83, 84) et les vérins des cambrage négatifs (81, 81') placés de chaque côté du plan de serrage (P) sont alignés, respectivement, suivant deux axes symétriques par rapport audit plan de serrage (P).
- Procédé de laminage d'un produit plat défilant suivant une direction longitudinale dans un laminoir selon la revendication 1, caractérisé par le fait que, au moins les empoises de chaque cylindre de travail (2) étant associées à des pièces intermédiaires (6) interposées entre les côtés de l'empoise (4) et les faces de guidage (13a, 13b), les moyens (7) de poussée latérale prennent appui sur au moins l'une desdites pièces intermédiaires (6b) pour repousser l'empoise (4) vers l'autre pièce intermédiaire (6a) et la face de guidage correspondante (13a), et que lesdites pièces intermédiaires (6a, 6b) sont solidarisées verticalement avec l'empoise (4) et sont maintenues avec possibilité de coulissement sans jeu le long des faces de guidage (13a, 13b) de façon à se déplacer verticalement avec l'empoise (4) sous l'effet d'un effort de cambrage du cylindre (2).
- Procédé de laminage selon la revendication 17, caractérisé par le fait que l'on interpose entre le côté de l'empoise (4) placé du côté opposé à l'effort de poussée latérale et la pièce intermédiaire correspondante (6a) des moyens de retenue (70) dont on règle l'épaisseur de façon à définir une face virtuelle de maintien latéral pour le positionnement de l'axe du cylindre (2).
- Procédé de laminage selon la revendication 18, caractérisé par le fait que l'on mesure l'effort axial exercé par un cylindre sur un côté de la cage et que l'on agit sur le positionnement de l'axe du cylindre par réglage des moyens de retenue (70) de façon à annuler l'effort axial détecté.
- Procédé de laminage selon la revendication 18, dans un laminoir comprenant deux cylindres de travail (2, 2') prenant appui chacun sur au moins un cylindre d'appui (3, 3'), caractérisé par le fait que l'on mesure l'effort axial exercé par chaque cylindre de travail sur l'un ou l'autre montant de la cage du laminoir et que l'on agit sur les positionnements relatifs des axes de chaque cylindre de travail (2) et du cylindre d'appui (3) correspondant d'une façon permettant d'annuler l'effort axial détecté.
- Procédé selon la revendication 18, dans un laminoir comprenant deux cylindres de travail (2, 2') associés chacun à au moins un cylindre d'appui (3, 3'), caractérisé par le fait que l'on règle les moyens de retenue (70) des empoises d'au moins l'un des cylindres de façon à déterminer un croisement de l'axe d'un cylindre de travail (2) par rapport à l'axe du cylindre d'appui (3) correspondant.
- Procédé selon la revendication 18, dans un laminoir comprenant deux cylindres de travail (2, 2') associés chacun à au moins un cylindre d'appui (3, 3'), caractérisé par le fait que l'on règle les moyens de retenue (70) des empoises d'au moins l'un des cylindres de façon à modifier la position angulaire de l'ensemble formé par un cylindre de travail (2) et le ou les cylindres d'appui (3) correspondants, par rapport à l'ensemble formé par l'autre cylindre de travail (2') et le ou les cylindres d'appui (3') correspondants.
- Procédé selon la revendication 18, dans un laminoir comprenant deux cylindres de travail (2, 2') associés chacun à au moins un cylindre d'appui (3, 3'), caractérisé par le fait que l'on règle les moyens de retenue (70) des empoises d'au moins l'un des cylindres de façon à modifier la position du plan de serrage passant par les axes des deux cylindres de travail (2, 2') par rapport au plan passant par les axes des cylindres d'appui (3, 3').
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9411963 | 1994-10-06 | ||
FR9411963A FR2725389B1 (fr) | 1994-10-06 | 1994-10-06 | Installation de laminage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0707902A1 EP0707902A1 (fr) | 1996-04-24 |
EP0707902B1 true EP0707902B1 (fr) | 1999-08-25 |
Family
ID=9467634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95402229A Expired - Lifetime EP0707902B1 (fr) | 1994-10-06 | 1995-10-05 | Installation de laminage |
Country Status (5)
Country | Link |
---|---|
US (1) | US5806360A (fr) |
EP (1) | EP0707902B1 (fr) |
DE (2) | DE69511651T2 (fr) |
ES (1) | ES2086284T3 (fr) |
FR (1) | FR2725389B1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19510694A1 (de) * | 1995-03-14 | 1996-09-19 | Mannesmann Ag | Walzgerüst mit gekreuzten Arbeitswalzen |
IT1288931B1 (it) * | 1996-06-24 | 1998-09-25 | Danieli Off Mecc | Dispositivo di compensazione per guarniture in gabbie di laminazione a quarto con movimentazione incrociata dei cilindri |
US5924319A (en) * | 1998-07-07 | 1999-07-20 | Danieli United | Roll crossing, offsetting, bending and shifting system for rolling mills |
US6748782B1 (en) * | 2000-03-01 | 2004-06-15 | Hitachi, Ltd. | Rolling mill, looseness eliminating device of roll bearing housing, rolling method, method of modifying rolling mill, and hot finishing tandem rolling equipment |
CN100335189C (zh) * | 2000-03-01 | 2007-09-05 | 株式会社日立制作所 | 轧机、轧辊轴承箱的松动消除装置 |
DE102007058729A1 (de) * | 2007-08-07 | 2009-02-19 | Sms Demag Ag | Walzvorrichtung mit Verstellvorrichtung |
DE102008049179A1 (de) * | 2008-09-26 | 2010-04-01 | Sms Siemag Aktiengesellschaft | Walzvorrichtung |
JP5447747B1 (ja) * | 2012-06-26 | 2014-03-19 | 新日鐵住金株式会社 | 金属板材の圧延装置 |
EP2792427B1 (fr) * | 2012-06-26 | 2017-06-07 | Nippon Steel & Sumitomo Metal Corporation | Dispositif de laminage de tôles métalliques |
US10994317B2 (en) * | 2016-03-08 | 2021-05-04 | Novelis Inc. | Method and apparatus for controlling metal strip profile during rolling with direct measurement of process parameters |
JP6455555B2 (ja) * | 2016-06-29 | 2019-01-23 | Jfeスチール株式会社 | 圧延機 |
DE102020204245A1 (de) * | 2020-04-01 | 2021-10-07 | Sms Group Gmbh | Walzgerüst |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1314027A (fr) * | 1961-12-05 | 1963-01-04 | Perfectionnements aux laminoirs à cylindres de travail déportés, permettant le laminage réversible sans soutiens supplémentaires des cylindres de travail | |
SU766684A1 (ru) * | 1978-12-13 | 1980-09-30 | Магнитогорский горно-металлургический институт им.Г.И.Носова | Подушка рабочего валка нереверсивной листопрокатной клети кварто гор чей прокатки |
JPS56111512A (en) * | 1980-02-07 | 1981-09-03 | Sumitomo Metal Ind Ltd | Chock of rolling mill |
DE3431691A1 (de) * | 1984-08-29 | 1986-03-13 | Achenbach Buschhütten GmbH, 5910 Kreuztal | Walzgeruest fuer bandfoermiges material |
JPS61129208A (ja) * | 1984-11-28 | 1986-06-17 | Hitachi Ltd | 圧延機のロ−ル軸受箱クランプ装置 |
US4803865A (en) * | 1987-07-17 | 1989-02-14 | SMS Schloemann--Siemag Aktiengesellschaft | Stand-supported bending device for axially slidable rolls of a multiroll rolling mill |
DE3807654A1 (de) * | 1988-03-09 | 1989-09-28 | Kloeckner Stahl Gmbh | Verfahren und vorrichtung zum wechseln und/oder (wieder-) anfahren von in baustuecken gelagerten walzen, rollen, scheren oder dgl. |
JPH064167B2 (ja) * | 1988-10-31 | 1994-01-19 | 株式会社オリエンテック | 圧延機作業ロールのスラスト力検出装置 |
DE3843387A1 (de) * | 1988-12-23 | 1990-07-05 | Schloemann Siemag Ag | Vorrichtung zum walzenwechsel insbesondere der horizontal verschieblichen arbeitswalzen in einem walzgeruest |
FR2661625A1 (fr) * | 1990-05-04 | 1991-11-08 | Clecim Sa | Procede de remplacement des cylindres d'un laminoir et laminoir perfectionne pour la mise en óoeuvre du procede. |
DE4041290A1 (de) * | 1990-12-21 | 1992-07-02 | Achenbach Buschhuetten Gmbh | Vorrichtung zum ausbalancieren und vertikalen biegen der arbeitswalzen eines quartowalzgeruestes |
JP2862439B2 (ja) * | 1991-07-30 | 1999-03-03 | 三菱重工業株式会社 | クロスロール圧延機のロールクロス装置 |
JP3152777B2 (ja) * | 1992-12-28 | 2001-04-03 | 石川島播磨重工業株式会社 | ロール用の軸受装置 |
DE4314472A1 (de) * | 1993-05-03 | 1994-11-10 | Schloemann Siemag Ag | Biegeblock zum Biegen der Walzen von Mehrwalzen-Walzgerüsten |
-
1994
- 1994-10-06 FR FR9411963A patent/FR2725389B1/fr not_active Expired - Fee Related
-
1995
- 1995-10-05 DE DE69511651T patent/DE69511651T2/de not_active Expired - Lifetime
- 1995-10-05 ES ES95402229T patent/ES2086284T3/es not_active Expired - Lifetime
- 1995-10-05 DE DE0707902T patent/DE707902T1/de active Pending
- 1995-10-05 EP EP95402229A patent/EP0707902B1/fr not_active Expired - Lifetime
- 1995-10-06 US US08/540,109 patent/US5806360A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69511651T2 (de) | 2000-01-05 |
DE707902T1 (de) | 1996-11-07 |
FR2725389A1 (fr) | 1996-04-12 |
FR2725389B1 (fr) | 1996-12-27 |
EP0707902A1 (fr) | 1996-04-24 |
ES2086284T3 (es) | 1999-10-16 |
ES2086284T1 (es) | 1996-07-01 |
DE69511651D1 (de) | 1999-09-30 |
US5806360A (en) | 1998-09-15 |
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