EP1118395B1 - Procédé et dispositif de contrôle thermique du profil d'un cylindre dans un laminoir - Google Patents
Procédé et dispositif de contrôle thermique du profil d'un cylindre dans un laminoir Download PDFInfo
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- EP1118395B1 EP1118395B1 EP01400041A EP01400041A EP1118395B1 EP 1118395 B1 EP1118395 B1 EP 1118395B1 EP 01400041 A EP01400041 A EP 01400041A EP 01400041 A EP01400041 A EP 01400041A EP 1118395 B1 EP1118395 B1 EP 1118395B1
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- roll
- spraying
- ramp
- zone
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- 238000005096 rolling process Methods 0.000 title description 32
- 238000005507 spraying Methods 0.000 claims abstract description 57
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- 230000002829 reductive effect Effects 0.000 claims abstract description 6
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
Definitions
- the subject of the invention is a method and a device of thermal control of the profile of a cylinder in a rolling mill.
- a metal strip rolling plant includes, in general, one or more cages of rolling mill each comprising at least two cylinders of work and associated with scroll control means a strip to be rolled between said rolls.
- each rolling mill cage has two support columns separated and connected by sleepers, between which is mounted a set of cylinders superimposed having parallel axes and placed substantially in the same clamping plane substantially perpendicular to the scroll direction of the product.
- the rolling product passes between two working cylinders that define the plane of rolling; these cylinders preferably have a diameter relatively small compared to the efforts they are submitted and thus supported respectively on at least two support cylinders between which is applied the effort of rolling.
- So-called "quarto" rolling mills therefore include four superposed cylinders, respectively two cylinders of associated work, respectively, to two supporting cylinders larger diameter.
- cylinders intermediaries are interposed between each cylinder of work and the corresponding support cylinder.
- Cylinders build on each other along substantially parallel, and directed, bearing lines following a generator whose profile, normally rectilinear, depends on the forces applied and the resistance cylinders.
- the clamping force is applied by screws or jacks interposed between the cage and the ends of the shaft of the upper support cylinder, the lower support cylinder supported by its ends directly on the cage.
- Such a cylinder comprises a deformable envelope rotative mounting around a fixed shaft on which is applied the tightening force and taking support on this tree via a set of adjustable jacks individually in position and / or pressure by a system of regulation, according to a measure of flatness carried out on the strip, downstream of the rolling mill, the defects of thickness thus determined being compensated by acting on the distribution of the constraints on the width of the band.
- At least one of the cylinders is associated with a ramp for spraying a coolant comprising a plurality sprinkler bodies spaced apart from each other along a direction parallel to the axis of the cylinder and each provided with a nozzle for spraying a jet of fluid directed on a face of the cylinder turned towards the ramp and whose flow is determined, for each watering organ, by means of a valve controlled individually by an adjustment system.
- Each spray nozzle is usually equipped a slot for delivering a flat jet centered on a median plane which cuts transversely the axis of the cylinder of to form an elongated impact surface having a low width and extending over part of the height of the cylinder.
- the cooled zone thus consists of a series of impact surfaces substantially parallel and spaced the each other a distance a little greater than the width of each surface.
- the median planes of the flat jets in which are placed the major axes of the impact surfaces, are inclined with respect to the axis of the cylinder, so that the impact is distributed, left and right, on both sides the center of the jet, covering a width that overflows slightly above and below the centers of adjacent jets, without interference between surfaces impact.
- the average flow, per unit of time, of the jet of sprayed fluid on each impact surface can be adjusted individually by the flow control system. It is thus possible to control precisely, by zones Fractional, a variation of the profile, in section cross-section, of the cylinder along the entire length of the zone cooled, so as to modify the distribution of the constraints to correct flatness defects detected downstream.
- the invention overcomes this drawback by bringing improvements to the systems used so far for the control of rolling mill rolls that allow to obtain a quality of flatness as perfect as possible.
- the invention uses a system of thermal control of conventional type in which at least one roll of the rolling mill is associated with at least one ramp spraying a fluid to control, by zones fractional, the effect of fluid jets on an area cooled cylinder.
- the spray boom comprises a central portion with a pitch constant, corresponding to the central zone of the zone cooled, in which each jet of fluid is directed along an injection axis perpendicular to the axis of the cylinder and two side parts with reduced pitch, in which the directions of the axes of the jets are varied relative to the axis of the cylinder, so as to make them converge respectively to two transition zones of both sides of the central zone of the cylinder, the number of jets convergent jets being such that, given their spread on the ramp, each side of the ramp covers a length greater than that of the zone of corresponding transition of the cylinder.
- the same non-zero angle is inclined by relative to the axis of the cylinder, the median planes of the jets directed on the central area of the cylinder and one increases gradually the angle of inclination of the median planes of jets directed respectively at the two transition zones, as the corresponding impact surface deviates from the central area.
- the invention therefore applies to a device for thermal control comprising, in known manner, at least one watering boom consisting of a plurality of members spaced coolant supplied with coolant and equipped each of a valve associated with a control system individual flow sprayed by each watering device.
- the width of the product to be rolled may vary between a minimum width and a width maximum
- the watering boom includes at least three series of watering organs, respectively, a central series covering a central part of the cooled zone on a length at most equal to the minimum width of the product and in which the watering organs have fixed directions so that the axes of the impact surfaces correspond to a constant step in central part of the cooled zone and two lateral series extending from both sides of the central series to cover, in total, a length at least equal to the width product and in which the watering devices are rotatably mounted on the ramp, each side series being associated with a means for adjusting the orientation of at least one group of pivoting watering organs, so as to reduce the differences between the axes of the impact surfaces in a transition zone at each end of the zone cooled cylinder.
- each lateral series of watering organs includes, going from the inside to the outside, a first section in which the axes of the jets are orthogonal to the cylinder axis and that covers a first lateral part of the cooled zone of the cylinder on a length such as the total length of the central part of the cooled zone, augmented with said first parts side is less than the width of the strip, and second section in which the axes of the jets are inclined inward in relation to the axis of the cylinder and which covers a second side part of the chilled area on a length such as the total length of said area cooled to at least the width of the strip, every second section of a side series covering, at a end of the cooled zone, a transition zone corresponding to one bank of the strip and in which median axes of the impact surfaces are separated from one distance less than the spacing pitch of said surfaces, respectively in the central part and the first side parts of the
- the means of adjusting the orientation of the jets include two ways of controlling the pivoting of a group of watering organs, respectively on each side series, each means of command being movable along the ramp and associated with a means of adjusting its position according to the width of the band and a selective engagement means of said means of control with a group of watering organs constituting a second section of each side series to cover a transition zone at each end of the cooled zone.
- each watering organ comprises a tubular body having an outlet end provided with a jet forming nozzle, and an input end connected to driving via a connecting piece limiting a connecting channel between the inside of the pipe and the inlet end of the tubular body, on which is placed a valve connected individually to the system of setting.
- each watering organ in each lateral series of the ramp, comprises a tubular body pivotally mounted on the branch piece around at least an axis orthogonal to the axis of the cylinder.
- each series lateral of watering organs is associated with a means of selective control of the pivoting of a group of organs watering system comprising a slider provided with spread fingers and slidably mounted on a support, along an axis parallel to the supply pipe of the ramp, a control means sliding of the cursor on its support for the setting of the position of the cursor along the ramp and a means of control of the cursor rotation around its axis in two opposite meanings, respectively of commitment and release of the cursor's fingers between the tubular bodies a group of watering organs of the ramp.
- the fingers of the cursor are spaced a constant distance a little less than the difference between the axes of the tubular bodies of two neighboring watering organs, said fingers of the cursor taking support one after the other on said tubular bodies when sliding the cursor, to determine a progressive variation of the angles of inclination of the jets by relative to the axis of the cylinder.
- FIGS. 1 and 2 show schematically, respectively in cross-section and in front view, the whole of a quarto-type rolling mill comprising four superimposed rolls, respectively two working rolls 1, 1 'and two support rolls 10, 10 ', the assembly being placed inside a cage 11 carrying means 12 for applying clamping forces on the ends of the shaft of one of the support cylinders 10, another support cylinder 10 'resting on wedges.
- a product M which passes, in a horizontal plane of movement P 1 , between the two working rolls 1, 1 '.
- the product M is centered on a vertical plane of symmetry P 2 of the cage.
- the rolling stock M consists of a metal strip having two banks 13a, 13b separated by a width L which, depending on the type of product to be rolled, can vary between a minimum width L 0 and a maximum width L 1 Generally , the width L of the product is less than the length of the working rolls whose support generatrix 14 is applied to the product only over part of its length. As a result, as indicated above, the rolling force applied by the clamping means 12 between the rolls determines a bending thereof which modifies the distribution of the stresses along the bearing generator. 14, the two banks 13a, 13b of the strip being generally more compressed than the central portion.
- the mechanical correction devices of flatness in which the distribution of constraints is corrected by cambering the work rolls or in using a deformable envelope support cylinder not allow local adaptation of the cylinder profile to take account of this discontinuity because the deformed cylinder is necessarily progressive.
- the watering organs have necessarily minimum dimensions that depend on the flow of fluid to pass and congestion mechanical parts and he it is not possible to reduce this clutter below of a certain limit.
- organs instead of to reduce as much as possible the congestion of watering organs, organs are used, on the contrary, with the necessary dimensions to ensure their reliability and, to improve the accuracy of the control thermal, we simply vary the directions of the jets at both ends of the ramp so as to reduce the distance between the median axes of the impact surfaces on a transition zone of adjustable width, at the level of each side edge of the band.
- this transition zone can have a 30 to 40 mm wide and the spacing between the axes of the impact surfaces of the jets can be reduced, for example, up to half of the spacing step that corresponds, in the central area, with minimal space requirements watering.
- two spraying devices 2, 2 'placed respectively on either side of the plane P 1 for moving the band M to be rolled are used. and each comprising at least one ramp 3, 3 'for spraying a coolant on a side face 4 of the corresponding working cylinder 1, 1'.
- each spray boom 3, 3 ' consists of a plurality of watering devices A arranged side by side, equidistant from one another, on a support block 20 forming a rigid beam carried, to its ends, by the two columns of the cage 11 and which extends parallel to the axis of the working cylinder 1, on the whole length of it.
- each cooling device 2, 2 ' may also comprise a second ramp 21, 21' fluid spraying. This second ramp is directed towards the upper support cylinder 10, above the band M and in the space between it and the cylinder of lower work 1 ', below the band.
- the fluid can be distributed by gravity for ensure the lubrication of all the cylinders.
- Each watering organ A consists of a body tubular 5 fixed by a connecting piece 26 on the block 20, 20 'in which are formed conduits supply, respectively 22 for the spray boom main 3, 3 'and 23 for the secondary ramp 21, 21'.
- Each connecting piece 26 of a watering member A is placed in communication with the supply line 23 via a connecting channel 24 on which is placed a solenoid valve 25 individually controlled so as to control the feed rate of the water.
- the tubular body 5 is closed by a nozzle 52 provided with a slot for the formation of a thin flat jet of fluid J, centered on an axis 50 and having a median plane P 3 which transversely crosses the x'x axis of the cylinder.
- the support blocks 20, 20 'of the two spraying devices 2, 2' are oriented from way that the axes 50 of the fluid jets formed by each ramp 3, 3 'are placed in substantially passing planes by the axes of the corresponding working rolls 1, 1 '.
- Each jet of fluid J therefore strikes the face 4 of the cylinder facing the next ramp 3 on a surface elongate S having substantially the shape of a rectangle curvilinear with a major axis transverse to the axis x'x and having a small width compared to the distance between the axes of two neighboring jets, so that there is no no interference between the impact surfaces.
- the effect of cooling can be adjusted locally by zones split.
- the invention differs from spraying devices usually used by the fact that the spray boom 3 is constituted, as shown diagrammatically on FIG. 3, of three series of watering organs, respectively a central series 31 consisting of organs sprinkler A which are rigidly fixed to the support block 20 and two lateral series, respectively 32a, 32b, consisting of steerable irrigation bodies A 'which are pivoted on the support block 20 and which can be set the orientation to the watered side of the cylinder 1.
- each organ A, A 'must have sufficient dimensions to ensure reliable operation.
- the pieces of branching 26 are therefore separated from each other, the along ramp 3, with a constant step (a) which corresponds to the minimum size of the watering devices.
- the number of stationary sprinklers A constituting the central series 31 of the ramp 3 is determined, as a function of the spacing pitch (a), so as to cover a length of the same order as the minimum width L 0 of the bandaged.
- the axes 50 of the sprayed jets are perpendicular to the x'x axis of the cylinder 1 so that the impact surfaces of the jets J are spaced apart by the same pitch.
- each lateral series 32a, 32b are spaced apart by the same step (a) and their number is determined according to the remaining length (L 1 -L 0 ) / 2 of the ramp, so as to cover the maximum width L 1 of the strip.
- the length of the cooled zone 4 must be limited to the effective part of the cylinder.
- the solenoid valves 25 associated with each watering member A, A ' are controlled individually by a flow control system that determines, according to the effective width L of the band, the number of sprinklers whose valves are open.
- the length of the ramp that is to say the distance between the axes of the nozzles respectively placed at both ends thereof, substantially corresponds to the maximum width L 1 of the product.
- the width L of the product is less than this maximum width, there is therefore, at each end of the ramp 3, a number of watering members corresponding to the part of the cylinder 1 which is not covered by the strip. and whose valves are closed.
- FIG 2 for example, there is shown schematically a rolling mill having a maximum width L 1 . It can be seen that, if the product has a width L, the valves of the sprinklers are open only on a central part of the ramp covering the same length L of the cylinder as the product and are closed at both ends, over a length ( L 1 -L) / 2.
- the fluid is distributed regularly on a cooled area of the cylinder of work 1, which extends over a length substantially equal to the distance L between the two edges 13a, 13b of the product, the remaining parts of the cylinder 1 not being cooled.
- the thermal control of the distribution of the stresses can be carried out in a conventional manner, by sprinkling jets of fluid regularly distributed over a central zone of the corresponding face of the working cylinder 1.
- the spacing pitch of the impact surfaces of the fluid jets is narrowed by so as to achieve two transition zones corresponding, respectively, to the strip zones 15a, 15b of the strip and in which the thermal control is provided more accurately so as to correct any residual defects.
- the ramp 3 comprises three sets of watering organs, respectively a central series 31 and two side series 32a, 32b. The whole is represented schematically on the figure 3.
- each side series 32a, 32b is consisting of steerable irrigation bodies A 'which are pivotally mounted on the support block 20 in a manner that will be described in detail later and whose orientation may to be determined by means of a cursor 6. This one moves along the ramp 3, parallel to the x'x axis of the cylinder and can engage on a number of watering organs 42 of each side series 32.
- the strip to be rolled has a width L close to the maximum width L 1 of the strip.
- the two sliders 6a, 6b which will be described in detail later, are therefore placed at the two ends of the ramp 3 so as to converge towards the inside of the strip, that is towards the plane of symmetry P 2 two groups of sprinklers respectively placed at both ends of the ramp 3 and each comprising, for example, six sprinklers.
- Each side series 32 thus comprises two sections, respectively a first section 33 and a second section 34.
- the sprinklers A'1 are directed perpendicular to the x'x axis of the cylinder.
- the second section 34 that extends beyond section 33 up the end of the effective part of the ramp 3 whose valves are open, the watering organs A'2, oriented by the cursor 6, converge towards the inside of the band.
- Each part of the ramp 3 thus defined determines watering a corresponding part of the watered side 4 of the cylinder which therefore comprises a central part 41 watered by the central series 31 of the ramp 3 and extended, each side, respectively by a first lateral part 43 watered by the first section 33 of the side series 32 and a second side portion 44 sprayed by the second section 34.
- the impact surfaces of the jets are regularly removed from the step (a) corresponding to the constant spacing of the watering organs.
- the second side portions 44a, 44b, placed respectively at both ends of the cooled zone 4 constitute transition zones in which the impact surfaces are closer together, allowing for to control, more precisely, the thermal effect of watering to compensate for any residual defects observed downstream on both banks of the strip.
- the total length of the ramp 3 should be a bit larger than the total length of the cooled zone 4.
- the flow control system determines the closing of the valves of a number of sprinklers which constitute, at each end of the ramp, a third section of the side series 32a, 32b whose valves are closed.
- the two sliders 6a, 6b are moved inward so as to engage respectively at each end of the effective part of the ramp 3 whose valves are open, on a group of watering organs whose jets converge on a transition zone 44 of the cooled surface 4 of the cylinder, at each end thereof.
- this part of the ramp whose valves are open shall cover a length greater than that of the cooled zone 4 of cylinder which is itself, preferably, a little superior to the actual width of the product (L).
- each zone transition 44a, 44b extends outward beyond the edge 13a, 13b of the band, which makes it possible to better avoid the discontinuity in the distribution of constraints, controlling the profile of the support generator on an area transition completely covering the edge of the band.
- FIG. 5 shows, in axial section, a watering member A 'of pivoting type comprising, as usually, a tubular body 5 limiting a channel of injection centered on an axis 50 and having an end input 51 connected by a connecting piece 26 to the block of support 20 not shown in Figure 5 and an end of outlet provided with a nozzle 52 having a formation slot a flat stream of fluid.
- the body tubular 5 is rigidly fixed to the branch member 26.
- the end 51 of the tubular body 5 consists of a part spherical 51 taken in a housing in two parts constituting the branching member 26, so as to constitute a swivel joint with a simple assembly game.
- the seal is provided by an annular seal 28 placed between the two parts of the housing 26.
- the latter is provided with a machining having two plane faces parallel to the x'x axis of the working cylinder and on which are threaded two dishes 53 formed at the base of the tubular body 5.
- This one can only rotate around a perpendicular axis on both sides 53, so that the axis 50 of the body tubular 5 moves in a plane.
- the support block 20 is oriented so that this plane passes substantially by the x'x axis of the working cylinder 1.
- the housing 26 is provided, on the side of the tubular body 5, of an indentation 27 which opens on one side so as to allow orientation, on this side, of the tubular body 5 against the action of a spring loaded pusher 54 which, in the absence external stresses, plate the tubular body 5, in the opposite direction, against the housing 26 in the position represented in FIG. 5 for which the axis 50 of the body tubular is perpendicular to the x'x axis of the cylinder.
- the nozzle 52 is mounted on a tip 55 which is immobilized in translation relative to the tubular body 5 but can turn around the axis 50 of it.
- the nozzle 52 is applied and fixed on the nozzle 55 by means of a clamping flange 52 'provided with a nut. It is thus possible to adjust an angle of inclination (k) of the median plane P 3 of the jet relative to the axis x'x of the cylinder 1.
- the nozzles 52 are adjusted so that the impact surfaces S are parallel.
- each watering organ orientable A ' is provided with a means of variation of the inclination (k) of the median plane of the jet as a function of the orientation variation (i) of the axis 50 thereof.
- a means of variation of the inclination (k) of the median plane of the jet as a function of the orientation variation (i) of the axis 50 thereof.
- FIGS. 10 and 11 there is shown respectively in front view and in top view, the whole of a spray boom with the control system of the orientation of the watering organs.
- each slider 6 At each end of the ramp is a slider 6 which is slidably mounted, without the possibility of rotation, on a shaft 61, passing below the organs watering A 'of the ramp 3.
- This slider 6 carries a plurality of regularly spaced apart fingers 62 projecting so as to pass between the tubular bodies 5 of a group of watering organs A'2. So, in the example shown in Figure 10, which corresponds to Figure 3, each slider 6 carries six fingers 62 which each extend to the level of the tubular body 5 of a watering member A'2 so as to take support laterally on it when the cursor 6 slide along the shaft 61.
- This sliding movement is controlled by a nut 7 engaged on a screw 71 and locked in rotation so to move longitudinally, with the cursor 6 when the screw 71 is driven in one direction or the other, by a hydraulic motor 72.
- the fingers 62 of the slider 6 are moved one step away constant (a ') which is a little smaller than the step (a) between axes 50 sprinkler organs A.
- a ' constant
- the six fingers 62 of the slider come successively bearing on the tubular bodies 5 corresponding six irrigation organs A'2. These begin to rotate one after the other and it results that the angle of inclination (i) of the axis 50 of an organ of irrigation 5 with respect to the axis x'x of the cylinder decreases in going from the inside to the outside, the way represented in FIG.
- the arrangement is symmetrical with respect to plane P 2 of symmetry of the rolling mill, the device comprising two sliders 6a, 6b whose displacements in opposite directions are controlled by two screws 71a, 71b having inverted and connected threads. by an extension 73.
- the rotation of the two screws, in one direction or the other, is controlled by a hydraulic motor 72 via a bevel gear.
- Each cursor 6a, 6b is thus placed at a level group of watering organs A'2 whose jets converge towards a transition zone 44a, 44b, at each end of the cooled zone 4 of the cylinder.
- Each cursor can move between two positions limits corresponding to both ends of each series 32a, 32b, respectively, an external position represented in solid lines in FIG. 10 and a position internal represented in dotted lines.
- each slider 6a, 6b is associated with a pneumatic cylinder 63 whose stem carries a rack 64 on which meshes a toothed wheel 65 wedged at the end of the shaft 61 of cursor guidance 6.
- the cursor 6 is consisting of a tubular sleeve mounted sliding axially along the shaft 61 but wedged in rotation with this one.
- a rotation of the controlled shaft 61 by the pinion 65 and the rack 64 determines the rotation of the slider 6 with, in one direction, the engagement of the fingers 62 between the tubular bodies 5 of the watering organs corresponding and, in the other direction, their clearance in the position 62 'shown in dashed lines in FIG. this position 62 'the fingers are placed below the level of the watering organs and do not therefore oppose sliding of the slider 6.
- the nut 7 is provided of a protruding training part 73 which engages in a circular groove 66 of the slider 6 allowing the rotation of it around its axis.
- the displacement hydraulic motor 72 sliders is equipped with a two-speed control controlled by a pulse generator so as to realize, on the one hand a fast movement of the sliders 6a, 6b for the choice of the group of watering organs to guide and, other a fine adjustment of the cursor position for to determine an optimal reduction of the spacing impact surfaces according to the edge defects to be corrected.
- FIG. 4 diagrammatically shows the impact surfaces S jets on the cooled side of the working cylinder 1.
- each watering member 5 is substantially concurrent with the x'x axis of the cylinder 1 and the nozzle 52 forms a flat jet, of small thickness, which is centered on a median plane P 3 transversely intersecting the x'x axis.
- the nozzles 52 are adjusted so that the median planes P 3 of the impact surfaces S are parallel and inclined at the same angle (k) with respect to the x'x axis of the cylinder.
- the cooling effect applies not only to the entire width (a) of the zone corresponding to the jet considered, but also to a part of the two adjacent zones, the covering (r) can be, for example, half of the step (a).
- the opening or closing of each valve 25 is controlled by all or nothing, the cooling effect is distributed over the entire length of the watered side 4 of the cylinder 1.
- the axes 50 of the sprinklers are spaced apart from each other by the same pitch (a) and the median planes P 3 of the jets are parallel and inclined at the same angle ( k) with respect to the x'x axis of the cylinder 1.
- the sprinklers are oriented so as to reduce the distance between the axes of the jets to a step that can be, for example, half of the constant pitch (a) in the central portion 41 and the first lateral portion 43.
- the end piece 55 on which the nozzle 52 is fixed is provided with a pallet 56 on which a torsion spring 57 rests, the opposite end of which is engaged in a hole of the tubular body, at the end of entry of it.
- the pallet 56 is applied by the spring 57 against a pin 58 fixed on the branch member 26 and the median plane P 3 is then inclined by the angle (k) corresponding to the setting of the nozzle.
- the variation of the angle of inclination (k) of the median plane P 3 of a jet depends on the length of the corresponding finger 62.
- the overlap (r 1 ) between two adjacent impact surfaces is reduced in the same way as their spacing (a 1 ) and remains of the order of half of it.
- the gradual variation of the angle of inclination (k) avoids interference between the impact surfaces S, the side where they converge.
- Figure 12 shows, in three successive diagrams, the progressive movement of the cursor 6 relative to a starting position, which determines the progressive inclination of the jets and the tightening of the impact surfaces.
- Figure 12a shows the position of the cursor 6 to from which all the fingers 62 have come into contact with the watering organs forming the steerable section 34 from the ramp.
- the angle of inclination (i) of the axes 50 of the jets fluid therefore increases gradually since the first nozzle 5a to the last nozzle 5b of section 34, which in this cursor position, is still directed perpendicular to the axis of the cylinder.
- the center of the jet of the first nozzle 5a of the series is then at a distance (c 1 ) from the starting position of the cursor 6, for which the same jet was perpendicular to the axis of the cylinder and the transition zone 44a extends over a width (d 1 ) to the axis of the first nozzle 5c of section 33.
- the last nozzle 5b of section 34 has not yet begun to pivot and its axis is therefore found at the distance (a) from the axis of the nozzle 5c, for example 50 mm.
- Figure 12b shows an intermediate position and the Figure 12c shows the final position for which the axes jets are regularly removed from the half-step (a / 2), by example 25 mm.
- transition zone has shifted slightly inwards the distance (c 2 ) having increased and that, at the same time, its width (d 2 ) has slightly decreased with respect to the initial width (d 1 ).
- the progressive tightening of the axes of the jets is accompanied by a gradual recovery of their median planes which allows to ensure a regular distribution of fluid throughout the height of cooled face 4.
- the nozzles currently used normally correspond to a spacing pitch of 50 mm about, it is quite certain that this spacing is function available equipment and characteristics of the rolling mill on which the device is installed.
- each nozzle is usually equipped with a slot for the formation of a flat section jet substantially rectangular but we can also use several orifices distributed in a fan and whose jets are confuse to form, on the cylinder, an impact surface elongated, narrow width.
- each additional sprinkler 8 placed on one side of the band is mounted on a slider 80 which is shaped so as to let the passage of the first screw 71.
- Each nozzle 8 is fed by a channel formed inside the slider 80 and on which is connected, via a swivel joint, a supply line 83, as shown in FIG. conduit 83 is slidably mounted in a sealed manner in a fixed tube 84 which extends on either side of the plane of symmetry P 2 and is connected to a central supply 85.
- Each additional nozzle 8 forms a flat jet J 'of preferably oriented vertically and that can move under the action of the screw 81, so as to be positioned with accuracy according to the fault to be corrected.
- the support 81 is consists of two screws with reverse pitch connected by an extension and engaging respectively in threaded bores arranged on each slider 80a, 80b.
- a hydraulic motor 82 controlling the rotation of the screw 81 determines equal displacements, in opposite directions of the sliders 80a, 80b and thus makes it possible to adjust the positions of jets J 'of the two nozzles 8a, 8b with respect to the two edges of the strip, the corresponding conduits 83a, 83b sliding in both ends of the central tube 84.
- a pulse generator makes it possible to control these displacements, in the opposite direction, of the two sliders 80a, 80b of to precisely adjust the position of the two nozzles 8a, 8b with respect to the two edges of the strip.
- both nozzles 8 can be fed at a different temperature than the nozzles A of the ramp 3, the coolant being able to besides, to be of another nature.
- the invention provides several means of thermal control whose effects can be combined so as to obtain a similar flatness quality perfect as possible.
- irrigation ramps and mechanisms associates constitute compact sets that can be easily installed, even in a rolling mill cage existing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Nozzles (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Secondary Cells (AREA)
Description
Claims (25)
- Procédé de contrôle thermique du profil d'un cylindre dans un laminoir comprenant des moyens de commande du défilement, entre au moins deux cylindres (1, 1') à axes parallèles, d'un produit à laminer (M) constitué d'une bande ayant deux rives (13) écartées d'une certaine largeur (L) et dans lequel au moins un cylindre (1) est associé au moins une rampe (3) d'aspersion d'un fluide caloporteur comprenant une pluralité d'organes d'arrosage (A) écartés les uns des autres le long d'une direction parallèle à l'axe (x'x) du cylindre (1) et munis chacun d'une buse (52) d'aspersion, d'un jet de fluide (J) centré sur un axe d'injection (50) passant sensiblement par l'axe (x'x) du cylindre (1) et formant, sur une face (4) du cylindre (1) tournée vers la rampe, une surface d'impact (S) de forme allongée ayant un grand axe placé dans un plan médian (P3) coupant transversalement ledit axe (x'x) du cylindre (1), chaque organe d'arrosage (A) étant muni d'une vanne (25) commandée par un système de réglage des débits pour l'arrosage du cylindre (1) par ouverture des vannes (25) sur une partie de la rampe (3) déterminant l'aspersion du fluide sur une zone refroidie (4) du cylindre (1) et la fermeture des vannes (25) sur les parties restantes de la rampe (3), ladite zone refroidie (4) étant recouverte d'une série de surfaces d'impact (S) dont les axes médians sont écartés d'une certaine distance (a), et le système de réglage déterminant individuellement le débit moyen, par unité de temps, du jet de fluide aspergé sur chaque surface d'impact (S),
caractérisé par le fait que l'on fait varier l'écartement (a) entre les axes médians des surfaces d'impact (S) en fonction de la position desdites surfaces d'impact sur la longueur de la zone refroidie (4) de façon que celle-ci comprenne une zone centrale (41, 43) dans laquelle les surfaces d'impact sont écartés d'un pas (a) sensiblement constant et deux zones de transition (44) s'étendant de part et d'autre de la zone centrale au moins jusqu'au niveau des deux rives (13) de la bande (M) et dans lesquelles l'écartement entre les axes médians des surfaces d'impact (S) est réduit par rapport au pas constant (a) de la zone centrale (41, 43). - Procédé de contrôle selon la revendication 1, caractérisé par le fait que, chaque jet plat (J) est centré sur un plan médian (P3) incliné d'un angle (k) non droit par rapport à l'axe (x'x) du cylindre (1) de façon que la surface d'impact (S) correspondante, s'étende transversalement sur le cylindre en s'écartant symétriquement par rapport à l'axe d'injection (50), de part et d'autre d'un plan transversal (P4) passant par l'axe d'injection (50) et perpendiculaire à l'axe (x'x) du cylindre.
- Procédé de contrôle selon l'une des revendications 1 et 2, caractérisé par le fait que, dans une partie centrale (31, 33) de la rampe d'aspersion (3) correspondant à la zone centrale (41, 43) de la zone refroidie (4), chaque jet de fluide (5) est dirigé suivant un axe d'injection (50) perpendiculaire à l'axe (x'x) du cylindre et que, dans deux parties latérales (34) de la rampe (3), de part et d'autre de la partie centrale, on fait varier l'orientation de l'axe (50) de chaque jet par rapport à l'axe (x'x) du cylindre, en faisant converger les jets d'un certain nombre de buses (A'2) des deux parties latérales (34) de la rampe (3), respectivement vers les deux zones de transition (44) du cylindre (1), le nombre de buses (A'2) à jets convergents étant tel que, compte tenu de leur écartement sur la rampe (3), chaque partie latérale (34) de la rampe (3) couvre une longueur supérieure à celle de la zone de transition (44) correspondante du cylindre (1).
- Procédé de contrôle selon la revendication 3, caractérisé par le fait que l'on incline d'un même angle (k) non nul par rapport à l'axe (x'x) du cylindre, les plans médians des jets dirigés sur la zone centrale (41, 43) du cylindre (1) et que l'on augmente l'angle d'inclinaison des plans médians des jets dirigés respectivement sur les deux zones de transition (44).
- Procédé selon la revendication 4, caractérisé par le fait que, dans chaque zone de transition (44), on détermine en même temps, à partir de la zone centrale (41, 43) et en s'écartant vers l'extérieur, une diminution progressive de l'inclinaison (i) de l'axe (50) des jets de fluide (J), et une augmentation progressive de l'inclinaison (k) de leur plan médian (P3) par rapport à l'axe (x'x) du cylindre (1).
- Dispositif de contrôle thermique du profil d'un cylindre dans un laminoir comprenant au moins deux cylindres (1, 1') à axes parallèles et des moyens de commande du déplacement, entre lesdits cylindres, d'un produit à laminer constitué d'une bande (M) ayant deux rives (13) écartées d'une certaine largeur (L) et dans lequel (1) au moins l'un des cylindres du laminoir est associé à un dispositif (2) de contrôle thermique comprenant au moins une rampe d'arrosage (3) constituée d'une pluralité d'organes d'arrosage espacés (A), répartis sur toute la longueur du cylindre (1), parallèlement à son axe (x'x) et reliés à un circuit (22) d'alimentation en fluide caloporteur, chaque organe d'arrosage (A) étant muni d'une vanne (25) et comprenant une buse (52) de formation d'un jet de fluide (J) centré sur un axe d'injection (50) sensiblement concourant avec l'axe (x'x) du cylindre (1) et formant, sur une face (4) du cylindre tournée vers la rampe, une surface d'impact (S) de forme allongée ayant un grand axe placé dans un plan médian (P3) du jet coupant transversalement l'axe (x'x) du cylindre, ladite rampe (3) étant associée à un système de réglage des débits aspergés par commande individuelle des vannes (25) de chacun des organes d'arrosage (A) déterminant, d'une part l'ouverture des vannes (25) sur une partie de la rampe (3) pour l'aspersion de fluide sur une zone refroidie (5) du cylindre avec fermeture des vannes (25) sur les parties restantes de la rampe (3) et, d'autre part, le réglage individuel du débit moyen, par unité de temps, du jet de liquide (5) aspergé sur chaque surface d'impact (S),
caractérisé par le fait que, la largeur (L) du produit à laminer pouvant varier entre une largeur minimale (L0), et une largeur maximale (L1), la rampe d'arrosage (3) comprend au moins trois séries d'organes d'arrosage, respectivement, une série centrale (31) couvrant une partie centrale (41) de la zone refroidie (4) sur une longueur au plus égale à la largeur minimale (L0) du produit (M) et dans laquelle les organes d'arrosage (A) ont des directions fixes de telle sorte que les axes (50) des surfaces d'impact (S) correspondantes soient écartés d'un pas constant (a) dans ladite partie centrale (41) de la zone refroidie (4) et deux séries latérales (32a, 32b) s'étendant de part et d'autre de la série centrale (31) pour couvrir, au total, une longueur au moins égale à la largeur maximale (L1) du produit et dans lesquelles les organes d'arrosage (A') sont montés pivotants sur la rampe (3), chaque série latérale (32) étant associée à un moyen (6, 7) de réglage de l'orientation d'au moins un groupe d'organes d'arrosage pivotants, de façon à réduire les écarts entre les axes des surfaces d'impact à chaque extrémité de la zone refroidie du cylindre. - Dispositif de contrôle thermique selon la revendication 6, caractérisé par le fait que, le laminoir et la bande à laminer étant symétriques par rapport à un plan longitudinal (P2), chaque série latérale (32a, 32b) d'organes d'arrosage (A') comprend, en allant de l'intérieur vers l'extérieur, une première section (33a, 33b) dans laquelle les axes des jets sont orthogonaux à l'axe (x'x) du cylindre (1) et qui couvre une première partie latérale (43a, 43b) de la zone refroidie (4) du cylindre sur une longueur telle que la longueur totale (L') de la partie centrale (41) de la zone refroidie (4), augmentée desdites premières parties latérales (43a, 43b) soit inférieure à la largeur (L) de la bande, et une seconde section (34a, 34b) dans laquelle les axes (50) des jets sont inclinés vers l'intérieur par rapport à l'axe (x'x) du cylindre et qui couvre une seconde partie latérale (44a, 44b) de la zone refroidie (4) sur une longueur telle que la longueur totale de ladite zone refroidie (4) soit au moins égale à la largeur (L) de la bande, chaque seconde section (34) d'une série latérale (32) couvrant, à une extrémité de la zone refroidie (4), une zone de transition (44) correspondant à une rive (13) de la bande (M) et dans laquelle les axes médians des surfaces d'impact (S) sont écartés d'une distance inférieure au pas (a) d'écartement desdites surfaces (S), respectivement dans la partie centrale (41) et les premières parties latérales (43a, 43b) de la zone refroidie (4).
- Dispositif selon la revendication 7, caractérisé par le fait que les moyens de réglage de l'orientation des jets comprennent deux moyens (6a, 6b) de commande du pivotement d'un groupe (34a, 34b) d'organes d'arrosage, respectivement sur chaque série latérale (32a, 32b) de la rampe (3), chaque moyen de commande (6) étant déplaçable le long de celle-ci, et associé à un moyen (7) de réglage de sa position en fonction de la largeur (L) de la bande (M), et à un moyen (64, 65) d'engagement sélectif dudit moyen de commande (6) avec un groupe d'organes d'arrosage constituant une seconde section (34) de chaque série latérale (32) pour couvrir une zone de transition (44), à chaque extrémité de la zone refroidie (4).
- Dispositif selon l'une des revendications 6 à 8, dans lequel la rampe d'arrosage (3) comprend une conduite (22) reliée à un circuit d'alimentation en fluide et sur laquelle sont branchés une pluralité d'organes d'arrosage espacés (A), caractérisé par le fait que les organes d'arrosage (A) sont écartés l'un de l'autre d'une distance minimale qui dépend de l'encombrement en largeur de chaque organe d'arrosage et détermine le pas constant (a) entre les axes médians (50) des surfaces d'impact (S) dans la partie centrale (41) et les premières parties latérales (43) de la zone refroidie (4).
- Dispositif selon la revendication 9, dans lequel chaque organe d'arrosage (A) comprend un corps tubulaire (5) ayant une extrémité de sortie munie d'une buse (52) de formation du jet (J) et une extrémité d'entrée reliée à la conduite d'alimentation (22) par l'intermédiaire d'une pièce de branchement (26) limitant un canal de liaison (24) entre la conduite (22) et l'extrémité d'entrée du corps tubulaire (5), sur lequel est placée une vanne (25) reliée individuellement au système de réglage, caractérisé par le fait que chaque organe d'arrosage (A) d'une série latérale (32) de la rampe comprend un corps tubulaire (5) monté pivotant sur la pièce de branchement (26) autour d'au moins un axe (y'y) orthogonal à l'axe (x'x) du cylindre (1) et est associé à un système de commande (6, 7) de la rotation du corps tubulaire (5) autour dudit axe de pivotement.
- Dispositif selon la revendication 10, caractérisé par le fait que la pièce de branchement (26) de chaque organe d'arrosage (A) comprend un boítier (26) limitant une cavité ayant une face interne circulaire centrée sur un axe (y'y) orthogonal à l'axe du cylindre (x'x) et que le corps tubulaire (5) de l'organe d'arrosage (A) est muni d'une portée circulaire (51) ayant un profil conjugué à celui de la cavité et logée dans celle-ci avec un simple jeu de montage.
- Dispositif selon la revendication 11, caractérisé par le fait que le corps tubulaire (5) est monté rotulant à l'intérieur de la cavité du boítier (26) et comprend au moins une face plane de guidage (53) parallèle à l'axe (x'x) du cylindre (1) et prenant appui sur une face plane correspondante du boítier (26) de façon à permettre un pivotement du corps tubulaire (5) autour d'un axe (y'y) perpendiculaire auxdites faces planes (53).
- Dispositif selon l'une des revendications 9 à 12, caractérisé par le fait que chaque organe d'arrosage comprend un moyen (56) de réglage d'un angle d'inclinaison (k) du plan médian (P3) du jet plat (J) par rapport à l'axe (x'x) du cylindre (1).
- Dispositif selon la revendication 13, caractérisé par le fait que la buse (52) de chaque organe d'arrosage est montée rotative sur le corps tubulaire (5) autour de l'axe (50) du jet (J) et que l'organe d'arrosage est associé à des moyens (56) de commande d'une rotation de la buse (52) autour de l'axe (50) du jet pour le réglage d'une variation de l'inclinaison (k) de son plan médian (P3) par rapport à l'axe (x'x) du cylindre.
- Dispositif selon l'une des revendications 9 à 14, caractérisé par le fait que chaque série latérale (32) d'organes d'arrosage (A') est associée à un moyen (6, 7) de commande sélective du pivotement d'un groupe (34) d'organes d'arrosage.
- Dispositif selon la revendication 15, caractérisé par le fait que le moyen de commande sélective de l'orientation comprend un curseur (6) muni de doigts écartés (62) et monté coulissant sur un support (61), s'étendant le long de la rampe (3), un moyen (7) de commande du coulissement du curseur (6) sur son support (61) pour le réglage de la position du curseur (6) le long de la rampe (7) et un moyen (64, 65) de commande de la rotation du curseur (6) autour de son axe dans deux sens opposés, respectivement d'engagement et de dégagement des doigts (62) du curseur (6) entre les corps tubulaires (5) d'un groupe (34) d'organes d'arrosage (A') de la rampe (3).
- Dispositif selon la revendication 16, caractérisé par le fait qu'il comprend un moyen de commande rapide du coulissement du curseur (6) le long de son support (61), pour le choix du groupe (34) d'organes d'arrosage (A') à faire pivoter, en fonction de la largeur (L) de la bande (M), et un moyen de commande lente du coulissement du curseur (6) pour le réglage fin des orientations des jets aspergés par ledit groupe (34) d'organes d'arrosage.
- Dispositif selon l'une des revendications 16 et 17, caractérisé par le fait que les doigts (62) du curseur sont écartés d'une distance constante (a') un peu inférieure à l'écart (a) entre les axes des corps tubulaires (5) de deux organes d'arrosage voisins, lesdits doigts (62) du curseur prenant appui l'un après l'autre sur lesdits corps tubulaires (5) lors du coulissement du curseur (6), pour déterminer une variation progressive des angles d'inclinaison (i) des axes des jets par rapport à l'axe (x'x) du cylindre (1).
- Dispositif selon l'une des revendications 16 à, 18, caractérisé par le fait que chaque organe d'arrosage orientable (A') comprend une buse (52) montée rotative sur le corps tubulaire (5) autour de l'axe (50) du jet (J) et un moyen (56) de rotation de la buse (52) actionné par le curseur (6) de commande de l'orientation de l'organe d'arrosage (A').
- Dispositif selon la revendication 19, caractérisé par le fait que le curseur (6) est muni de doigts (62) susceptibles de s'engager entre les corps tubulaires (5) d'un groupe d'organes d'arrosage par rotation du curseur (6) autour d'un axe et que le moyen de rotation de la buse (52) de chaque organe d'arrosage est constitué d'une palette (56) solidaire en rotation de la buse (52) et sur laquelle vient prendre appui le doigt correspondant (62) du curseur (6) lors de la rotation de celui-ci pour l'engagement des doigts, ledit engagement déterminant ainsi une rotation de la buse (52 autour de l'axe (50) du jet.
- Dispositif selon la revendication 20, caractérisé par le fait que la longueur des doigts (62) ménagés sur le curseur (6) augmente en allant de l'intérieur vers l'extérieur de façon à déterminer une augmentation progressive de l'angle d'inclinaison (k) du jet (J) en allant vers les extrémités de la zone refroidie (4) du cylindre.
- Dispositif de contrôle thermique selon l'une des revendications 6 à 21, caractérisé par le fait qu'il comprend des moyens supplémentaires (8) d'aspersion d'un jet de fluide, respectivement sur chaque rive (13a, 13b) de la bande (M), constitués chacun d'un organe d'aspersion (8) monté coulissant sur un support, parallèlement à l'axe (x,x) du cylindre (1) et associé à un moyen (80) de commande de déplacements de l'organe d'aspersion (8) en fonction de la largeur effective (L) de la bande (M) pour le réglage de la position de la surface d'impact correspondante par rapport à la rive (13) de la bande.
- Dispositif selon la revendication 22, caractérisé par le fait qu'il comprend des moyens séparés (84, 85) d'alimentation en fluide des organes supplémentaires d'aspersion (8).
- Dispositif selon la revendication 22, caractérisé par le fait qu'il comprend deux organes supplémentaires d'aspersion (8a, 8b) montés coulissants sur un même support (81) et des moyens (82) de commande de déplacements égaux, en sens contraires, des deux organes (8a, 8b) sur ledit support (81).
- Dispositif selon la revendication 22, caractérisé par le fait que chaque organe supplémentaire d'aspersion (8a, 8b) est porté par un curseur (80a, 80b) muni d'un alésage fileté dans lequel engrène une vis (81) entraínée en rotation par un moteur (82) et comprenant deux parties munies de filetages inversés déterminant des déplacements égaux et en sens contraires des deux curseurs (80a, 80b).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR0000243A FR2803548B1 (fr) | 2000-01-10 | 2000-01-10 | Procede et dispositif de controle thermique du profil d'un cylindre dans un laminoir |
FR0000243 | 2000-01-10 |
Publications (2)
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EP1118395A1 EP1118395A1 (fr) | 2001-07-25 |
EP1118395B1 true EP1118395B1 (fr) | 2005-07-13 |
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EP01400041A Expired - Lifetime EP1118395B1 (fr) | 2000-01-10 | 2001-01-09 | Procédé et dispositif de contrôle thermique du profil d'un cylindre dans un laminoir |
Country Status (7)
Country | Link |
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US (1) | US6490903B2 (fr) |
EP (1) | EP1118395B1 (fr) |
CN (1) | CN1247334C (fr) |
AT (1) | ATE299404T1 (fr) |
DE (1) | DE60111875T2 (fr) |
ES (1) | ES2241756T3 (fr) |
FR (1) | FR2803548B1 (fr) |
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US8166785B2 (en) * | 2006-11-27 | 2012-05-01 | Ihi Corporation | Rolling mill apparatus and method of shape control of rolled strip and plate |
CN102671960B (zh) * | 2011-03-09 | 2014-04-30 | 宝山钢铁股份有限公司 | 热连轧机轧辊在机辊型控制方法 |
JP5433794B2 (ja) * | 2011-05-16 | 2014-03-05 | 新日鉄住金エンジニアリング株式会社 | 圧延ロールの洗浄装置および洗浄方法 |
CN102632086B (zh) * | 2012-02-28 | 2014-04-30 | 宝山钢铁股份有限公司 | 一种热轧带钢侧边浪控制方法 |
EP2676744A1 (fr) * | 2012-06-22 | 2013-12-25 | Siemens VAI Metals Technologies GmbH | Dispositif d'arrosage d'une installation de laminage et méthode d'extraction/introduction dudit système hors/dans ladite cage de laminage |
DE102013009695A1 (de) * | 2013-06-03 | 2014-12-04 | Sms Siemag Ag | Spritzbalkenverstellung für ein Mehr-Rollenwalzwerk |
EP3006125A1 (fr) * | 2014-10-09 | 2016-04-13 | Josef Fröhling GmbH & Co. KG | Laminoir et procede de laminage |
JP6362751B1 (ja) * | 2017-09-15 | 2018-07-25 | 株式会社松浦機械製作所 | 切削油の供給方法 |
EP3670011B1 (fr) | 2018-12-21 | 2022-09-28 | Primetals Technologies Austria GmbH | Refroidissement de la bande métallique dans une cage de laminoir |
DE102019217569A1 (de) * | 2019-06-25 | 2020-12-31 | Sms Group Gmbh | Planheitsmessvorrichtung zur Messung der Planheit eines metallischen Bandes |
EP3854494B1 (fr) * | 2020-01-24 | 2022-09-28 | Primetals Technologies Germany GmbH | Répartition dépendante de la fréquence des grandeurs de réglage permettant de changer la section transversale de produit laminé dans un laminoir |
CN113909316B (zh) * | 2021-11-19 | 2024-08-27 | 中国重型机械研究院股份公司 | 一种贝状冷却液喷射系统 |
CN113909315A (zh) * | 2021-11-19 | 2022-01-11 | 中国重型机械研究院股份公司 | 一种轧机冷却液喷射方法 |
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SU900894A1 (ru) * | 1980-06-06 | 1982-01-30 | Всесоюзный Научно-Исследовательский И Проектный Институт По Очистке Технологических Газов, Сточных Вод И Использованию Вторичных Энергоресурсов Предприятий Черной Металлургии | Способ охлаждени прокатных валков листовых станов |
US4444495A (en) * | 1981-04-28 | 1984-04-24 | Bethlehem Steel Corp. | Method and apparatus for alignment of spray nozzles in continuous casting machines |
NL8403821A (nl) * | 1984-12-17 | 1986-07-16 | Hoogovens Groep Bv | Inrichting voor het koelen van een werkwals in een walstuig voor het walsen van metaalband. |
US4706480A (en) * | 1985-10-11 | 1987-11-17 | Svatos Joseph D | Rolling mill cooling system |
JPS62173013A (ja) * | 1986-01-25 | 1987-07-29 | Kobe Steel Ltd | 圧延機におけるク−ラントヘツダ− |
US4912955A (en) * | 1988-12-05 | 1990-04-03 | Norandal Usa Inc. | Spray system for rolling mill |
US5212975A (en) * | 1991-05-13 | 1993-05-25 | International Rolling Mill Consultants, Inc. | Method and apparatus for cooling rolling mill rolls and flat rolled products |
DE4134599C1 (fr) * | 1991-10-18 | 1993-02-25 | Thyssen Stahl Ag, 4100 Duisburg, De | |
EP0776710B1 (fr) * | 1995-11-20 | 2001-12-19 | SMS Demag AG | Dispositif pour influencer le profil d'une bande laminée |
JPH09267106A (ja) * | 1996-03-29 | 1997-10-14 | Kawasaki Steel Corp | 熱間圧延機の圧延ロール冷却装置 |
JP3495909B2 (ja) * | 1998-03-30 | 2004-02-09 | 株式会社東芝 | 圧延ロールのプロフィール制御装置 |
-
2000
- 2000-01-10 FR FR0000243A patent/FR2803548B1/fr not_active Expired - Fee Related
-
2001
- 2001-01-09 EP EP01400041A patent/EP1118395B1/fr not_active Expired - Lifetime
- 2001-01-09 DE DE60111875T patent/DE60111875T2/de not_active Expired - Lifetime
- 2001-01-09 ES ES01400041T patent/ES2241756T3/es not_active Expired - Lifetime
- 2001-01-09 US US09/756,113 patent/US6490903B2/en not_active Expired - Fee Related
- 2001-01-09 AT AT01400041T patent/ATE299404T1/de not_active IP Right Cessation
- 2001-01-10 CN CN01116238.4A patent/CN1247334C/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8966951B2 (en) | 2009-02-02 | 2015-03-03 | Siemens Vai Metals Technologies Sas | Spraying method and device for a rolling plant |
Also Published As
Publication number | Publication date |
---|---|
DE60111875D1 (de) | 2005-08-18 |
CN1247334C (zh) | 2006-03-29 |
FR2803548B1 (fr) | 2002-04-19 |
US20010007200A1 (en) | 2001-07-12 |
CN1308998A (zh) | 2001-08-22 |
EP1118395A1 (fr) | 2001-07-25 |
ES2241756T3 (es) | 2005-11-01 |
FR2803548A1 (fr) | 2001-07-13 |
DE60111875T2 (de) | 2006-05-24 |
US6490903B2 (en) | 2002-12-10 |
ATE299404T1 (de) | 2005-07-15 |
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