WO2002002251A1 - Laminoir et procede de laminage - Google Patents

Laminoir et procede de laminage Download PDF

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Publication number
WO2002002251A1
WO2002002251A1 PCT/JP2000/004458 JP0004458W WO0202251A1 WO 2002002251 A1 WO2002002251 A1 WO 2002002251A1 JP 0004458 W JP0004458 W JP 0004458W WO 0202251 A1 WO0202251 A1 WO 0202251A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
rolls
reinforcing
rolling
supporting
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.)
Ceased
Application number
PCT/JP2000/004458
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English (en)
Japanese (ja)
Inventor
Takashi Norikura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to PCT/JP2000/004458 priority Critical patent/WO2002002251A1/fr
Publication of WO2002002251A1 publication Critical patent/WO2002002251A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • 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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/021—Rolls for sheets or strips
    • B21B2027/022—Rolls having tapered ends

Definitions

  • the present invention relates to a rolling mill and a rolling method for rolling a metal strip, and more particularly to a rolling mill and a rolling method suitable for obtaining a strip crown and a strip having an excellent shape.
  • An object of the present invention is to provide a rolling mill and a rolling method that use a small-diameter work roll and have excellent sheet crown control ability. Disclosure of the invention
  • a rolling mill including a pair of upper and lower work rolls for rolling a steel strip, two pairs of upper and lower intermediate rolls supporting the work rolls, and two upper and lower pairs of reinforcing rolls supporting each of the intermediate rolls, A pair of upper and lower work rolls for rolling the steel strip, A rolling mill provided with two pairs of upper and lower reinforcing rolls for supporting each of the work rolls, wherein the roll shoulders whose roll diameters decrease at the roll body end positions symmetrical with respect to the center of the strip width of the strip are respectively provided. Provision of a bearing or a bearing for each reinforcing roll will reduce the diameter of the work roll and improve the crown control ability.
  • FIG. 1 is a front view of a 10-high rolling mill according to a first embodiment of the present invention.
  • FIG. 2 is a sectional view taken along the line II-II of FIG.
  • FIG. 3 is a sectional view taken along the line m-m in FIG.
  • FIG. 4 is a sectional view taken along the line II-II of FIG.
  • FIG. 4 is an explanatory view of a bending force.
  • FIG. 5 is a diagram showing functions and effects of the 10-high rolling mill shown in FIG.
  • FIG. 6 is a diagram showing a relationship between a moment and a bending force by the rolling method of the present invention and equivalent bending by a cylinder output.
  • FIG. 7 is a view showing a difference in deflection of a work roll when a moment and a bending roll are applied to the intermediate roll and the work roll by the rolling method of the present invention.
  • FIG. 8 is a diagram showing the relationship between the plate shape control and roll deflection by the rolling method of the present invention, and the plate shape.
  • FIG. 9 is a cross-sectional view of FIG. 1 of another 10-high rolling mill according to the second embodiment of the present invention.
  • FIG. 10 is a sectional view taken along line XX of FIG.
  • FIG. 11 is a cross-sectional view of FIG. 1 of another 10-high rolling mill according to the third embodiment of the present invention.
  • FIG. 12 is a cross-sectional view taken along the line II-III of FIG.
  • FIG. 13 is a cross-sectional view taken along the line xm—xm in FIG.
  • FIG. 14 is a front view of a six-high rolling mill according to a fourth embodiment of the present invention.
  • FIG. 15 is a sectional view taken along the line XV—XV in FIG.
  • FIG. 16 is a cross-sectional view taken along the line XVI-XVI of FIG.
  • FIG. 17 is a diagram illustrating the relationship between the operation method of the hydraulic cylinder and the work roll cloth according to the rolling method of the present invention.
  • one pair of upper and lower work rolls for rolling the steel strip is moved to the right and left by two pairs of upper and lower intermediate rolls. It can be firmly supported from both sides on the left side. Further, with such support, the bending of the work roll due to the drive tangential force from another drive roll can be suppressed as small as possible.
  • the work rolls are firmly supported from the right and left sides by two pairs of upper and lower reinforcement rolls.
  • the deflection of the work roll with a small diameter due to the driving tangential force can be minimized.
  • the upper and lower work rolls cross each other on a horizontal plane and the gap between the work rolls by the operation of the combination of a plurality of hydraulic cylinders with the reinforcement roll bearings on the operation side and drive side of the two pairs of reinforcement holes.
  • the rolling mill of this embodiment is a 10-high rolling mill provided with a pair of upper and lower work rolls, two pairs of upper and lower intermediate rolls, and two pairs of upper and lower reinforcing rolls. is there.
  • the strip 1 to be rolled is rolled by a pair of upper and lower work rolls 2 and 3.
  • the upper work roll 2 is supported on the upper side by two right and left intermediate rolls 4 and 6, and the intermediate ports 4 and 6 are supported by the reinforcing rolls 8 and 10, respectively.
  • the reinforcing rolls 8, 10 are individually supported rotatably by bearings and reinforcing roll bearing boxes 18a, 18b, respectively. Roller bearings for each reinforcing roll Since the boxes are provided, it is possible to individually install a rolling load device and a pass line adjusting device. Also, the direction of the rolling load from the rolling load device can be set as appropriate.
  • These reinforcing roll bearing boxes 18a, b are supported by housings 23a, b via pass line adjusting devices 20a, b such as Ohm jacks.
  • pass line adjusting devices 20a, b such as Ohm jacks.
  • a load cell (not shown) may be built in the pass line adjusting devices 20a and 20b to measure the rolling load.
  • the upper work roll 2 is rotatably supported by the work roll bearing boxes 27a, b, c, d. Since a work port bearing is provided for each work roll, it becomes possible to easily apply a bending force to the work rolls or to move in the axial direction for each work roll.
  • the upper intermediate rolls 4, 6 are individually rotatably supported by the intermediate roll bearing boxes 25a, b, c, d. Since an intermediate roll bearing is provided for each intermediate roll, bending force can be easily applied to the intermediate roll, and axial movement of each intermediate roll is enabled.
  • the lower work roll 3 is in contact with and supported by two intermediate rolls 5 and 7 on the lower side, and the intermediate rolls 5 and 7 are supported in contact with the reinforcing rolls 9 and 11, respectively.
  • the reinforcing rolls 9, 11 are individually supported rotatably by bearings and reinforcing roll bearing boxes 19a, b, respectively.
  • the reinforcing roll bearing boxes 19a, b are supported by housings 23a, b via hydraulic cylinders 21a, b.
  • the hydraulic cylinders 21a and b may be provided only at the right or left two places, and the rest may be a pass line adjusting device such as an ohm jack as in the upper case.
  • the lower work roll 3 is rotatably supported by a work roll bearing box 28a, b, c, d, and the lower intermediate rolls 5, 7 are individually mounted on intermediate roll shafts.
  • the receiving boxes 30a, b, c, and d are rotatably supported.
  • the rolling load is applied by the hydraulic cylinders 2 l a and b which are rolling load devices.
  • the direction of the rolling load applied from the rolling load device is different from the normal vertical direction and is applied from a direction inclined with respect to the vertical direction.
  • the direction in which the rolling load is applied from the rolling load device to the reinforcing roll bearing box is the direction from the reinforcing roll 9 to the work roll 3 via the intermediate roll 5, and the horizontal direction. Contains ingredients. This horizontal component can also reduce the deflection of the work roll.
  • a reinforcing roll bearing box is provided for each reinforcing roll and a rolling load is applied in the above-described direction, a large rolling load can be applied. That is, for example, a reinforcing roll bearing box that integrally supports the lower two reinforcing rolls is provided, and when a rolling load is applied in the vertical direction, the rolling load direction applied to the reinforcing roll from the rolling load device and the intermediate position from the reinforcing roll The direction of transmission of the rolling load when transmitting to the work roll via the roll is different, and when a large rolling load is to be applied, it is necessary to use a rigid and strong reinforcing roll bearing box, which increases the size.
  • a reinforcing roll bearing box for supporting each of the two lower reinforcing rolls is provided, and a rolling load is applied in a direction inclined with respect to the vertical direction.
  • the direction of the rolling load applied to the work roll is almost the same as the direction of the rolling load transmitted from the reinforcing roll to the work roll via the intermediate roll, so even if a large rolling load is to be applied, the size of the reinforcing roll bearing box is small. Is possible.
  • the upper and lower reinforcing rolls are integrally supported, or if the upper and lower roll groups are integrally supported, it is difficult to properly follow the change in roll diameter. That is, by rolling, usually The roll diameter changes due to abrasion and polishing to improve the surface properties. An integrated support mechanism for multiple rolls cannot cope with changes in the diameter of each roll.
  • a bearing box is provided for each roll, and a pressing device (pass line adjusting device or rolling load device) is provided for each reinforcing roll bearing box. Can be easily handled by adjusting the individual pressing devices.
  • the rolling torque is transmitted from a spindle (not shown) through the work rolls 2 and 3 or the intermediate rollers 4 and 6.
  • the intermediate rolls 4, 5, 6, 7 have a roll diameter at the roll body end position that is point-symmetric with respect to the center of the width of the strip 1 for the upper and lower pairs forming the left and right sides, or the left and right pairs forming the upper and lower sides. Each has a decreasing roll shoulder.
  • the intermediate rolls 4, 5, 6, 7 are supported by bearing boxes 25a, b, c, d, 30a, b, c, d via bearings not shown.
  • the bearing boxes 25b and 30b are connected to a shift frame 33 via detachable hooks 32a and b, and the shift frame 33 is provided with a housing 23 so as to be movable in the roll axis direction. It is connected to hydraulic cylinders 31a and 31b fixed to b.
  • the intermediate rolls 4, 5, 6, and 7 have a bearing box with hydraulic cylinders 26a, b, c, d, 29a, b, c, d built into the shift blocks 16a, b. 25 a, b, c, d, 30 a, b, c, d provide moment and / or force bending.
  • Shift blocks 16 a and b are It is supported by housings 23a and b so that it can move in the roll axis direction.
  • the shift blocks 16a, b are connected to the shift frame 33 by hooks 32a, b, similarly to the bearing boxes 25b, 30b.
  • the working ports 2, 3 are supported by bearing boxes 27a, b, c, d, 28a, b, c, d via bearings not shown.
  • the working ports 2 and 3 are provided with bearing boxes 27 a and b by hydraulic cylinders 24 a, b, c, d and 31 a, b, c, d fixed to the nozzles 23 a, b. , c, d, 28 Bending of moment and Z or force is applied via a, b, c, d.
  • the cylinder pushing output of cylinders 24c and 24d shown in Fig. 4 is Fa
  • the cylinder pushing output of cylinders 24a and 24b is Fb
  • the cylinder pulling outputs are Fd and Fc, respectively.
  • the outputs F a to F d are applied to the work rolls 2, 3, and Z or similarly to the intermediate rolls 4, 5, 6, 7, so as to have the incremental bending force in the direction shown in FIG.
  • the strip 1 is rolled to have a medium elongation tendency.
  • the strip 1 when the position of the shoulder of each of the intermediate rolls 4, 5, 6, and 7 is moved inward of the strip width of the strip 1, the strip 1 is rolled to have a middle-stretching tendency, and the outside of the strip width of the strip 1 is rolled. When it is moved in the direction, the strip 1 is rolled in a tendency to elongate.
  • v FL 3 (l - 3 x / 2 L + x 3/2 L 3) / 3 EI - (1)
  • v is the deflection of the upper work roll 2
  • F is the bending force
  • E is the modulus of elasticity
  • I is the second moment of area
  • L and X are the dimensions defined in FIG.
  • the deflection of the upper work roll 2 due to the moment imparting function is expressed by the following equation, assuming that the cantilever is a simple supporting beam.
  • V -M (x - L) 2/2 EI - (2) wherein, M represents a moment.
  • ⁇ ⁇ 5 ⁇ Fb (4)
  • ⁇ a dimension between the cylinder 24a and the cylinder 24b.
  • Working force of cylinders 24 a, b, c, d pushing and pulling F a to F d is equivalent to bending force F and moment M in the direction shown in Fig. 8 (c) in working ports 2 and 3. Then, the plate shape of the strip 1 is rolled into an M-shaped elongated shape.
  • the output F a to F d of the pushing and pulling of the cylinders 24 a, b, c and d becomes equivalent to the bending force F and the moment M in the directions shown in Fig. 8 (d) on the work rolls 2 and 3.
  • the shape of the strip 1 is Rolled into a knuckle shape.
  • the cylinders 24, 28a, b, c, d and the cylinders 26, 29a, b, c, d are driven and the intermediate roll 4 is driven.
  • Roll movement is performed so that the position of the roll shoulders of, 5, 6 and 7 coincides with the vicinity of the width end of the strip 1.
  • the work rolls 2 and 3 are almost parallel to the center of the strip in point symmetry, so that the almost flat strip 1 is rolled.
  • Moment M and bending force F are applied to both ends of work rolls 2 and 3 and intermediate rolls 4, 5, 6, and 7 in opposite directions by one roll.
  • the strip is formed by the linear pressure distribution S2 between the intermediate ports 4, 5, 6, 7 and the work rolls 2, 3.
  • the dashed line it is almost parallel to the center of the strip 1 with point symmetry.
  • the conventional four-high rolling mill uses the strip pressure due to the linear pressure distribution S3 between the work rolls 42 and 43 and the reinforcing ports 44 and 45.
  • the contact surface pressure between the work holes 42 and 43 and the reinforcing rolls 44 and 45 is generated outside the width of the plate 1 and the deflection Til 3 of the work roll 42 and the lower work hole
  • the deflection T d 3 of the screw 43 becomes as shown by the dashed line, and the thickness of the end portion of the strip 1 sharply decreases.
  • the positions of the roll shoulders of the intermediate rolls 4, 5, 6, and 7 are made to coincide with the vicinity of the width end of the strip 1, respectively.
  • the contact pressure between the rolls 2 and 3 and the intermediate rolls 4, 5, 6 and 7 is almost non-existent on one side, and the deflection of the work rolls 2 and 3 is almost parallel to the center of the strip 1 in point symmetry.
  • the moment M and the bending force F effectively act on the work rolls 2 and 3, so that the deflection of the work rolls 2 and 3 can be changed freely.
  • strip strip 1 is stretched in the middle, edge is stretched, and composite strip is stretched.
  • the plate shape can be controlled freely, and it is possible to always correct and roll to the desired plate shape. As described above, it is possible to obtain the strip 1 having an excellent plate shape.
  • the work roll can be made smaller in diameter, and the crown control ability can be improved. Therefore, a remarkable effect can be expected particularly in the rolling of a hard material. Further, by arranging the rolling mill of the present embodiment in front of the tandem rolling mill, a remarkable effect can be expected.
  • FIGS. 9 and 10 show a second embodiment of the present invention.
  • the same members as those shown in FIG. 1 are denoted by the same reference numerals, and the description of the members having the same configuration and operation as the first embodiment will be omitted.
  • Second implementation The example is also a 10-high rolling mill, and the strip 1 is rolled by a pair of upper and lower work rolls 46 and 47.
  • the work ports 46, 47 have roll shoulders whose roll diameters decrease at the roll body end positions symmetrical with respect to the center of the width of the strip 1 in the upper and lower pairs.
  • the working ports 46, 47 are supported by bearing boxes 27a, b, c, d, 28a, b, c, d via bearings not shown in the same manner as in the first embodiment. ing.
  • the bearing boxes 27a and 28a are connected to a shift frame 49a via a hydraulic cylinder 48a, and the shift frame 49a is fixed to the housing 23a.
  • the bearing boxes 27b and 28b are connected to a shift frame 49b via a hydraulic cylinder 48b, and the shift frame 49b is fixed to the housing 23b.
  • the work rolls 46, 47 are shifted in the roll axis direction by the push / pull operation of the hydraulic cylinders 48a, 48b.
  • FIG. 11 a third embodiment of the present invention is shown in FIG. 11, FIG. 12, and FIG.
  • members that are the same as the members shown in FIGS. 1 and 2 are given the same reference numerals, and descriptions of those having the same configurations and operations as those of the first embodiment are omitted.
  • the third embodiment is also a 10-high rolling mill, and the strip 1 is rolled by a pair of upper and lower work rolls 50 and 51.
  • the work rolls 50 and 51 each have a pair of upper and lower roll shoulders whose diameter is reduced at the mouth end portion of the mouth which is point-symmetric with respect to the center of the width of the strip 1. are doing.
  • the work rolls 50 and 51 are provided with thrust bearings at the end of the mouth.
  • the hydraulic cylinders 55a, b, 56a, b are fixed to the housings 23a, b via shift frames 66a, b.
  • the work rolls 50 and 51 are shifted in the roll axis direction by the pushing and pulling operations of the hydraulic cylinders 55 a and b and 56 a and b.
  • Bearings 64a, b, c, d are rotatably contacted near the roll end of the upper working roll 50, and the bearings 64a, b, c, d are pins.
  • hydraulic cylinders 67 a, b, c, d It is connected to hydraulic cylinders 67 a, b, c, d via 61 a, b, c, d.
  • bearings 63, 65a, b, c, and d are rotatably contacted near the roll end of the lower work roll 47, and the bearings 63, 65a, b, c, and d are in contact with each other.
  • And are connected to hydraulic cylinders 67 a, b, c, d via pins 60, 62 a, b, c, d.
  • a positive bending force can be given to 50 and 51 in the vertical direction.
  • bearings 53a, b are in rotatable contact, and their bearings 53a, b are connected to hydraulic cylinders 52a, b via pins 69a, b.
  • Bearings 58a, b are rotatably contacted near the roll end of the lower working hole 51, and the bearings 58a, b are connected to the hydraulic system via pins 70a, b. It is connected to Linda 59 a, b.
  • FIG. 14, FIG. 15, and FIG. the same members as those shown in FIG. 1 are denoted by the same reference numerals, and the description of the members having the same configuration and operation as the first embodiment will be omitted.
  • the fourth embodiment is a six-high rolling mill, and the strip 1 is rolled by a pair of upper and lower work rolls 2 and 3.
  • the strip 1 to be rolled is rolled by a pair of upper and lower work rolls 2 and 3.
  • the upper work roll 2 is supported on the upper side by contact with two left and right reinforcing ports 8, 10.
  • the reinforcing rolls 8, 10 are provided with bearings and reinforcing roll bearing boxes 18 a, b (not shown).
  • the reinforcing roll bearing boxes 18a, b, c, d are supported by housings 22a, b via hydraulic cylinders 33a, b, c, d.
  • a load cell (not shown) is installed at the tip of the rod of this hydraulic cylinder 33a, b, c, d, the rolling load can be measured. good.
  • the lower work roll 3 is supported on the lower side in contact with two left and right reinforcing rolls 9 and 11, and the reinforcing rolls 9 and 11 are used for bearing and reinforcing roll bearing boxes 19 (not shown).
  • the bearing housing 19 a, b, c, d is rotatably supported by a, b, c, d.
  • the housing 19 a, b, c, d is provided via a hydraulic cylinder 21 a, b, c, d. 23 Supported by a and b.
  • the hydraulic cylinders 33, 21a, b, c, and d may be provided only at the right or left two locations, and the rest may be a pass line adjusting device such as an ohm jack.
  • the rolling load is applied by the hydraulic cylinders 33, 21a, b, and the rolling torque is transmitted from the spindle (not shown) by the work rolls 2, 3 or the intermediate rolls 4, 6.
  • the rolling load direction applied from the rolling load device is different from the vertical direction and is inclined with respect to the vertical direction, so that the above-described effects can be obtained.
  • the work rolls 2 and 3 have roll shoulders whose roll diameters are reduced at the roll body end positions that are point-symmetric with respect to the center of the width of the strip 1 in the upper and lower pairs forming the left and right sides.
  • a work roll without a roll shoulder may be used to carry out a cyclic shift in the axial direction.
  • the work rolls 2 and 3 are supported by bearing boxes 36 and 37 a, b, c and d via bearings (not shown). This figure shows an example in which one roll has two bearings on one side, but two bearings on one side may be used.
  • the bearing boxes 36, 37b are connected to the shift frame 72 through detachable hooks 73a, b, and the shift frame 72 is housed so that it can move in the roll axis direction.
  • Hydraulic cylinder 7 1 fixed to b is connected to a and b.
  • the work rolls 2 and 3 are provided with the hydraulic series built in the shift blocks 38 a and b. 40a, b, c, d, 41a, b, c, d, through the bearing boxes 36a, b, c, d, 37a, b, c, d A power banding is granted.
  • the shift blocks 38a, b are supported by the housing 22b so as to be movable in the roll axis direction.
  • the shift blocks 38a, b are connected to the shift frame 72 by hooks 73a, b, similarly to the bearing boxes 36b, 37b.
  • the concept of the rolling method of the present embodiment in which the rolling mill is used to control the thickness of the material to be rolled and the crown control (plate shape control) will be described with reference to FIG.
  • a method for controlling the thickness will be described.
  • the upper hydraulic cylinders 33a, b, c, and d are controlled so that all upper hydraulic cylinders 33a, b, c, and d are at the same position in order to determine the vertical position of the upper work roll 2.
  • the thickness is measured with an inlet thickness gauge and an exit thickness gauge (not shown), and the lower right operating side hydraulic cylinder 21a or Z and the lower left operating side hydraulic cylinder 21c and lower right driving are used.
  • Side hydraulic cylinder 2 1b or Z and lower left drive side hydraulic cylinder 2 1 d are opened and closed while taking the operating side and drive side repelling, apply pressure to the lower work roll, and control the thickness to the target thickness. .
  • the thrust can be received by the roll cloth at the upper and lower two reinforcing openings 8, 10, 9, and 11, respectively, so that a large roll cloth can be added. Therefore, the crown control (plate shape control) capability of Honguchi One Cross becomes large. By adding a force or / and moment bending function, more complex shape defects can be corrected.
  • the sheet crown control ability is large, the sheet with a relatively thick sheet thickness is arranged on the front stage of a cold tandem mill where there is a great need to change the sheet crown. It becomes possible.
  • a similar roll cloth method may be applied to the first to third embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

L'invention concerne un laminoir comprenant deux cylindres de travail supérieurs et deux cylindres de travail inférieurs laminant une bande d'acier, deux paires de cylindres supérieurs et inférieurs intermédiaires supportant les cylindres de travail, et deux paires de cylindres supérieurs et inférieurs de renforcement supportant les cylindres intermédiaires respectifs. L'invention concerne également un laminoir comprenant deux cylindres de travail supérieurs et deux cylindres de travail inférieurs laminant une bande d'acier, et deux paires de cylindres supérieurs et inférieurs de renforcement supportant les cylindres de travail respectifs. Selon l'invention, un épaulement de cylindre de diamètre réduit se trouve à une extrémité de la coque du cylindre, de manière symétrique par rapport à un axe médian latéral de la bande d'acier, ou bien chaque cylindre de renforcement est équipé d'un coussinet. On dispose ainsi d'une machine à rouler ou d'un laminoir présentant d'excellentes capacités de réglage du bombement de la tôle, en faisant appel à des cylindres de travail de faible diamètre.
PCT/JP2000/004458 2000-07-05 2000-07-05 Laminoir et procede de laminage Ceased WO2002002251A1 (fr)

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PCT/JP2000/004458 WO2002002251A1 (fr) 2000-07-05 2000-07-05 Laminoir et procede de laminage

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011025299A (ja) * 2009-07-29 2011-02-10 Mitsubishi-Hitachi Metals Machinery Inc 作業ロールシフト機能を具備した圧延機
CN102553938A (zh) * 2011-12-20 2012-07-11 河南鸽瑞复合材料有限公司 带侧推装置的多辊轧机的控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4941254A (fr) * 1972-08-19 1974-04-18
JPS6015403U (ja) * 1983-07-06 1985-02-01 石川島播磨重工業株式会社 ５段又は６段圧延機
JPH0313220A (ja) * 1989-06-09 1991-01-22 Kawasaki Steel Corp 圧延機
JPH06509A (ja) * 1992-04-15 1994-01-11 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPH10166005A (ja) * 1996-12-06 1998-06-23 Ishikawajima Harima Heavy Ind Co Ltd Ｘ型ミルを具備した圧延設備

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4941254A (fr) * 1972-08-19 1974-04-18
JPS6015403U (ja) * 1983-07-06 1985-02-01 石川島播磨重工業株式会社 ５段又は６段圧延機
JPH0313220A (ja) * 1989-06-09 1991-01-22 Kawasaki Steel Corp 圧延機
JPH06509A (ja) * 1992-04-15 1994-01-11 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPH10166005A (ja) * 1996-12-06 1998-06-23 Ishikawajima Harima Heavy Ind Co Ltd Ｘ型ミルを具備した圧延設備

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011025299A (ja) * 2009-07-29 2011-02-10 Mitsubishi-Hitachi Metals Machinery Inc 作業ロールシフト機能を具備した圧延機
CN102553938A (zh) * 2011-12-20 2012-07-11 河南鸽瑞复合材料有限公司 带侧推装置的多辊轧机的控制方法
CN102553938B (zh) * 2011-12-20 2014-08-06 河南鸽瑞复合材料有限公司 带侧推装置的多辊轧机的控制方法

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