WO1998008629A1 - Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres - Google Patents

Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres Download PDF

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Publication number
WO1998008629A1
WO1998008629A1 PCT/JP1996/002409 JP9602409W WO9808629A1 WO 1998008629 A1 WO1998008629 A1 WO 1998008629A1 JP 9602409 W JP9602409 W JP 9602409W WO 9808629 A1 WO9808629 A1 WO 9808629A1
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WO
WIPO (PCT)
Prior art keywords
roll
rolling
grinding
cart
rolls
Prior art date
Application number
PCT/JP1996/002409
Other languages
English (en)
Japanese (ja)
Inventor
Shigeru Mori
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/JP1996/002409 priority Critical patent/WO1998008629A1/fr
Publication of WO1998008629A1 publication Critical patent/WO1998008629A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • 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
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • B21B31/103—Manipulators or carriages therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • B24B5/045—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally with the grinding wheel axis perpendicular to the workpiece axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
    • B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls

Definitions

  • the present invention relates to a rolling equipment for a plate, and more particularly to a method of grinding and exchanging rolls of a rolling equipment.
  • the rolled steel sheet is the final product, so very strict quality requirements are placed on the surface properties of the steel sheet: therefore, a certain amount of rolled material is rolled. As a result, the surface roughness of the rolls becomes poor, and the surface quality of the rolled steel sheet deteriorates due to the poor surface condition of the rolls, so that a new rolling process is performed before the surface roughness of the rolls becomes unsuitable for rolling. It is common to change to a roll.
  • the used rolls that have been replaced are transported to a portal shop using a crane or the like, and the bearing box is extracted from the rolls. Then, the outer periphery of the rolling roll is ground so as to have the desired shape and surface roughness (first conventional technique).
  • the first prior art is a method for treating a general rolling roll surface property that has deteriorated in a conventional cold rolling facility.
  • the frequency of changing the rolls is increased, and there is a problem that the time to stop rolling for changing the rolls increases.
  • tandem rolling mills if the frequency of roll changes increases, the number of rolls during cooling before grinding increases, so a large area for cooling the rolling mill is also required It has problems such as becoming.
  • roll exchange used rolling rolls are transported to a roll shop to remove a bearing box and the like, cooled, and then ground on a grinding lathe.
  • the milled roll is transported from the first shop to the rolling mill and used for the next roll change. For this reason, it takes time to attach and detach the bearing housing, cool the rolling rolls, transport the rolling rolls, etc., and it takes a lot of time to change the rolls. During this time, the rolling mill is stopped, and the rolling work efficiency is poor. Met.
  • the second conventional technology is that, in the case where the rolling roll is ground in a rolling mill like a hot rolling mill in a cold rolling mill, a cold rolling mill using a small-diameter rolling roll is compared with a hot rolling mill. Installation is difficult unless the online grinding equipment in the rolling mill is very small. There is also a problem that grinding powder generated when grinding is mixed in the cooling liquid of the rolling roll. In order to completely separate the cooling fluid from the rolling roll and the grinding fluid, the structure must be completely sealed around the grindstone of the online roll grinding device so that the grinding fluid does not leak. However, each time the roll is used, the roll is different In some cases, the structure for completely sealing the grinding fluid is complicated.
  • the third prior art describes that a worn rolling roll is pulled out onto a roll exchange trolley to grind the roll, and then a grinding device is mounted on the roll exchange trolley for grinding.
  • this method can solve the problems described in the prior arts 1 and 2.
  • vibrations from the rolling mill are transmitted during rolling. If this is done, phenomena such as “chatter” will occur on the roll surface, and the grinding accuracy of the roll surface will deteriorate.
  • no consideration is given to the vibration from the rolling mill.
  • An object of the present invention is to improve the roll grinding ability during rolling when performing rolling roll grinding of a rolling mill of a cold rolling facility outside the rolling mill, to simplify the equipment of the cold rolling facility, and The aim is to improve the efficiency of rolling work by improving the efficiency of replacement work.
  • the rolling equipment of the present invention comprises: a rolling mill having rolling rolls; a roll exchanging cart for exchanging the rolling rolls; and a grinding cart for grinding the rolling rolls, which are sequentially arranged in a roll axis direction.
  • the method for exchanging rolling rolls includes: a step of moving and loading the rolling rolls from a rolling mill having the rolling rolls onto a roll exchanging carriage; Performing the step of: grinding the surface of the rolling roll on the grinding cart to a surface roughness capable of being rolled; and moving and loading the roll capable of being rolled from the grinding cart to the roll exchanging cart. And a step of moving and setting the roll rolled so as to be rollable from the roll exchanging cart to the rolling mill.
  • FIG. 1 is a front view of a rolling facility according to one embodiment of the present invention
  • FIG. 2 is a plan view of a rolling facility according to one embodiment of the present invention as viewed from above.
  • FIG. 3 is a view showing a rolling equipment according to an embodiment of the present invention when a plurality of rolling mills are provided. Is a plan view of the device viewed from above.
  • FIG. 4 shows a front view of a grinding cart according to one embodiment of the present invention.
  • FIG. 5 shows a side view of a grinding cart according to one embodiment of the present invention.
  • FIG. 6 is a plan view illustrating an operation of grinding a rolling roll using a grinding cart according to an embodiment of the present invention.
  • FIG. 7 is a plan view illustrating an operation of grinding a rolling roll using a grinding cart according to an embodiment of the present invention.
  • FIG. 8 shows a side view of a grinding bogie having a structure in which a bearing box is fixed and a rolling roll is rotated.
  • FIG. 9 is a plan view of a grinding bogie having a structure in which a bearing box is fixed and a rolling roll is rotated.
  • FIG. 10 is a plan view showing a case where a roll transporting trolley is arranged between a roll exchanging trolley and a frame provided with a grinding device.
  • FIG. 11 shows a cross-sectional view of a planar grinding wheel attached to a grinding device.
  • the surface of the rolling roll can be stably and favorably ground without causing cracks.
  • a roll exchanging trolley is installed between the rolling mill and the roll grinding trolley so that the rolls can be transferred between the rolling trolley and the rolling trolley. Can be exchanged, and roll exchange becomes easy.
  • the rolling mill, the roll exchanging trolley, and the roll grinding trolley are sequentially arranged. Rolling rolls can be exchanged between the rolling mills, and the rolling rolls can be exchanged in a small space in a short time.
  • Fig. 2, Fig. 2 and Fig. 3 show cold rolling equipment to which the present invention is applied.
  • Fig. 1 is a front view of the cold rolling equipment
  • Figs. 2 and 3 are views of the cold rolling equipment as viewed from above
  • Fig. The figure shows an example of a plurality of rolling mills.
  • a rolling mill 3 In these rolling equipment, a rolling mill 3, a roll exchange cart 2, and a mouth grinding cart 1 are sequentially arranged in the axial direction of the roll.
  • a roll exchanging trolley 2 is installed between the rolling mill 3 and the roll grinding trolley 1 so that the rolling rolls can be transferred between the rolling exchange trolleys 1 and the rolling mill 3.
  • the rolls can be easily exchanged, and the roll exchange becomes easy.
  • the rolling mill 3 the roll exchanging trolley 2, and the roll grinding trolley i are sequentially arranged and the rolls can be transferred between each other, it is possible to exchange the rolls in a short space in a short time. Become.
  • the rolling mill 3 in this embodiment is for cold rolling, and the cold rolling mill 3 is a rolling roll 3 1 arranged vertically above and below for directly rolling the rolled material S (this roll is generally used for work. ) Rolling load is added to support rolling roll 3 1 Reinforcing roll 3 3, located between rolling roll 3 1 and reinforcing roll 3 3, and can be moved in the roll axis direction according to the width of rolled material S Intermediate rolls 32 are arranged, each of which is provided symmetrically about the rolled material S.
  • these rolling rolls are provided with bearing boxes 34 at both ends of the rolls, and a stand 35 for receiving the rolling load and a source for fixing the stand 35 to the foundation of the floor surface.
  • It is composed of a rail plate 37, an in-machine rail 36 for replacing the rolling roll 31 smoothly, and a spindle 38 rotating the rolling roll 31 at a desired speed when rolling.
  • the in-machine rail 36 is provided for each of the upper and lower rolling rolls.
  • the spindle 38 is disposed on one side of the rolling mill, and the side on which the spindle 38 is provided is referred to as a drive side. The other side is called the operation side.
  • the roll exchanging trolley 2 in the present embodiment is disposed on the operation side opposite to the driving side of the rolling mill 3 provided with the spindles 38, and is used and is used as a rolling roll 3 1 having a deteriorated surface property. (Hereinafter referred to as “old roll”) is used to replace a new roll with good surface properties (hereinafter referred to as “new roll”).
  • old roll is used to replace a new roll with good surface properties (hereinafter referred to as “new roll”).
  • This roll exchange bogie 2 is a whole bogie 21 and the old roll and new roll.
  • a side shift trolley 22 that can load and move in the direction perpendicular to the roll axis direction (rolling direction), pulling out old rolls from the rolling mill 3 to a side shift trolley 22 or using a new roll And a push-pull device 23, which is a means for moving the rolls from the side shift trolley 22 to the rolling mill 3, and the old roll and the new roll are placed on the side shift trolley 22.
  • Move Truck rails 24a and 24b for loading are provided.
  • the rolling mill 3 has an in-machine rail 36 inside the rolling mill 3 so that the old roll moves smoothly from the rolling mill 3 to the side shift carriage 22.
  • the bogie rails 24a and 24b for the old and new rolling rolls that can be connected to a certain in-rail rail 36 are provided on the side shift bogie 22.
  • the rails 24a and 24b engage to move the roll.
  • the bogie rails 24a, 24b for the old roll and the new roll are provided for the upper and lower sides, respectively, that is, the lower bogie rails 24a, 24b and the upper bogie rail are provided. 24 a 'and 24 b' are provided.
  • a bearing box 34 is attached to each roll, and the bearing box 34 is provided with wheels so that it can travel on rails and move.
  • each old roll and new roll can be moved with the bearing box 34 attached.
  • the upper rolling roll 31 runs on the upper bogie rail 24a 'or 24b', and the lower rolling roll 31a runs on the lower bogie rail 24a or 24b, It moves from the inside of the rolling mill 3 to the roll exchanging trolley 2.
  • the side shift cylinder 21b and the side shift rail 2la are used to move the side shift cart 22 smoothly on the entire cart 21 in the direction perpendicular to the roll axis direction. And the side shift truck 22.
  • the old rolling roll whose surface property has been deteriorated by rolling is not transported to the roll shop, and the old rolling roll is moved to the roll grinding cart 1 on the anti-rolling machine side of the roll exchanging cart 2,
  • the rolling roll 31 is ground on this grinding cart to a surface state that can be used for rolling again.
  • an intermediate rail 21c for moving the rolling roll 31 from the roll exchanging trolley 2 to the mouth grinding trolley 1 is also provided on the entire trolley.
  • the intermediate rail 21 c is provided so as to be connectable to the bogie rails 24 a and 24 b on the side shift bogie 22 of the roll exchanging bogie 2.
  • the grinding cart has two or more rolls that can be driven to rotate so that the rolling rolls can be rotated to the desired speed for grinding with the roll bearing boxes 34 attached to both ends of the rolling rolls.
  • a roll rotation driving device is provided below the rolling roll, and the roll of the roll rotation driving device is arranged in parallel with the axis of the rolling roll, and has a function of holding the S weight of the rolling roll when the rolling roll rotates.
  • bearing boxes 34 at both ends of the roll may be fixed, and one end of the rolling roll may be connected to a driving device for rotating the rolling roll and rotated.
  • the roll grinding trolley 1 is composed of a grinding trolley frame 11, a traversing rail 12 for moving the grinding trolley frame 11 in a direction perpendicular to the roll axis, and a rolling mill 3 1 from a roll exchange trolley 2 to a roll grinding trolley 1.
  • a push-pull device 14 that pulls the rail 13 and the rolling nip 3 1 from the roll changing trolley 2 into the roll grinding trolley 1 and a roll rotating device that rotates the roll 3 1 to the required speed for grinding 15 and further, aligning the position of the lifting rail i 3 with the positions of the trolley rails 24 a and 24 b provided on the side shift trolley 22 of the mouth changing trolley 2, and the grinding device 5
  • the lifting device 16 that moves the lifting rail 13 up and down to the required grinding height is installed at the four force points of the grinding trolley frame 11, and the sliding frame 7 that attaches the grinding device 5 to this grinding trolley frame 11
  • a grinding device 5 that can grind the used old rolling roll and grind it again until it can be used for rolling again is attached to the sliding frame 7.
  • the grinding device 5 includes a grinding device moving unit that can move in the roll axis direction along the sliding frame 7, and includes a grinding wheel pressing unit that presses the grinding wheel of the grinding device against the rolling rolls. .
  • the apparatus has a clamping device 17 for fixing the traversing rail 12 and the roll grinding cart 1 to each other.
  • clamp clamp 17 b Press down and fix with clamp clamp 17 b from both sides of traversing rail 12. This sandwiching is performed by the sandwiching mechanism 17a.
  • the clamp retainer 17 b is fixed to the grinding carriage frame 11 with bolts or the like.
  • the vibration during the grinding of the roll grinding cart 1 can be further suppressed by the clamp device 17, and the grinding ability can be further improved.
  • chatter marks generated on the surface of the mouth due to vibration during rolling from the rolling mill during grinding, and burrs due to grinding can be further suppressed by the clamp device 17.
  • the rolling rolls 3 1 are used by using the roll exchange cart 2 and the roll grinding cart 1.
  • the movement of the rolling roll 31 when grinding the steel will be described with reference to ( ⁇ )-(F) in FIG. 6 and FIG.
  • FIG. 6 shows a state where the used rolling roll 31b (old rolling roll) is ground by the pallet grinding cart 1. Then, the rolling rolls 31a are incorporated in the rolling mill 3, and the rolled material S is rolled.
  • the rolled roll 31b that has been ground is moved onto the roll exchanging trolley 2, and the bogie on one side is moved. Wait briefly on rail 24a.
  • a bogie rail 24c that can be connected to the bogie rail 24a on one side is provided between the bogie rail 24a and the roll grinding bogie 1.
  • the rolling roll 31a is worn and the roll surface properties deteriorate, the rolling roll 31a From the rolling mill 3 and stand on the bogie rail 24 b on the other side of the roll exchanging bogie 2.
  • the roll roll 31b ground and the roll roll 31a used for the roll that requires grinding are loaded on the roll exchange cart 2.
  • the side shift trolley 22 on the roll exchanging trolley 2 is moved in a direction perpendicular to the roll axis direction to remove the rolling roll 3 1a from the rolling mill 3 and to move along with the in-machine rails 36 of the rolling mill 3.
  • the bogie rails 24b on the other side are engaged so as to be connectable.
  • the side shift trolley 22 on the roll exchanging trolley 2 is connected to the roll shaft by the side shift cylinder 21b on the whole trolley 21. Move in the perpendicular direction (rolled material advancing direction).
  • the bogie rail 24 a on one side and the in-machine rail 36 are connected to each other, and the rolling rolls 31 b are moved to the side shift bogies 22 on the roll exchanging bogie 2.
  • the rolling mill 3 To the rolling mill 3 and incorporated into the rolling mill.
  • the side shift cart 22 is moved in a direction perpendicular to the roll axis direction, or the roll grinding cart 2 is moved in a direction perpendicular to the roll axis direction.
  • the bogie rail 24 b and the bogie rail 24 c on the side shift bogie are connected to each other, and the rolling roll 3 1 a extracted from the rolling mill 3 is used as the side shift bogie 2 on the roll exchanging bogie 2 2 2 It is moved using a push-pull device 14a from the roll grinding cart 1 to the roll grinding cart 1. Then, grinding is performed on the roll grinding cart 1 to improve the surface properties of the portion where the surface properties of the rolling roll 31a are deteriorated to a level at which rolling can be performed.
  • the lifting rail 13 is rotated by the screw 16c by the motor 16b of the lifting device 16 and the intermediate rail 2 4 Set to c.
  • the rolling roll 31 has upper and lower rolls, but the bogie rails 24 are provided in two steps so that they can be pulled out separately, and they are raised and lowered to the height of the intermediate rail 24c.
  • the rail 13 has a mechanism that can move up and down. In the direction perpendicular to the direction of the roll axis, the wheel 18 attached to the roll grinding cart 1 is rotated and moved by a drive device (not shown). As a result, the intermediate rail 24c and the lifting rail 13 are aligned in the roll axis direction. Next, the push-pull device 14a is moved, and the hook 141-1 attached to the tip of the push-pull device 14a is hooked to the rolling roll 3 1 to move the roll exchanging cart 2 to the roll grinding cart 1. .
  • the screw 16c is rotated by the motor 16b of the lifting device 16 by the motor 16b of the lifting device 13 so that the rolling roll 31 along with the lifting rail 13 holds the roll roller of the roll rotating device 15. Lower until you get on 15 a.
  • the holding roll 15 that holds the rolling roll using the drive mechanism 15 b of the roll rotating device. Is rotated, and the rolling roll 31 is rotated by the rotational force.
  • the rotated rolling roll 31 is ground by a grinding device 5 attached to a sliding frame 7.
  • the bearing box holding device 57 securely presses the bearing box 34 onto the receiving base 19.
  • the rolling roll 31 is pushed up using the needle holding device 58 to rotate it while the gap is killed. May be. Further, the gap can be killed by pushing down the rolling roll 31.
  • the rolling method of the rolling roll 3 1 is simultaneously performed when one end of the rolling roll 3 1 is lowered to the roll rotating device 15 by the lifting rail 13. And rotated by the roll rotating device 15.
  • the grinding device 5 will be described with reference to FIG.
  • the flat grinding wheel 20 for grinding the rolling roll 31 has a thin disk 52 and an annular abrasive layer 51 on the side of the thin disk 52 opposite to the shaft side.
  • the thin disk 52 In order to absorb the vibration of the rolling roll 31 caused by the roll grinding cart 1 not being firmly fixed on the foundation, the thin disk 52 has an elastic function, and the rolling roll 31 and the abrasive The structure is such that the amount of re-bending varies depending on the contact force with the layer 51.
  • the spring constant of the thin disk 52 as an elastic body is 10 From 0 O kg / bandit to 3 O kg / dragon is good.
  • the abrasive layer 51 is formed integrally with the thin disk 52 by an adhesive so that it can be in close contact with the vibrating rolling roll 31.
  • the abrasive layer 51 is made of super-abrasive cubic boron nitride abrasive or diamond and grains, and its thickness is about 2 mm to 5 mm to reduce the mass of the movable part. Have been.
  • the flat grinding wheel 20 is flat with respect to the axis Rc of the rolling roll 31 so that only one side of the ring is in contact with the rolling roll 31.
  • the axis Rb of the grinding wheel 20 is arranged at a slight angle a.
  • the on-line roll grinder grinds the rolling roll 31 which is vibrated from the rolled material, and performs the grinding while controlling the contact force between the abrasive layer 51 and the rolling roll 31 to the desired force.
  • the roll grinding cart 1 also performs grinding in a state where vibration from the rolling mill is more likely to occur than when grinding in a roll shop, so the thin disk 52 of the flat grinding wheel 20 has an elastic body function.
  • Online roll Grinding is performed while controlling the contact force between the abrasive layer 51 and the rolling roll 31 to the desired force, as in the grinding device.
  • the grinding device 5 has a traversing rail below the sliding frame 7 and has a moving distance that allows a single grinding device 5 to grind from the roll end on the operation side to the roll end on the drive side.
  • the grinding device 5 After the unused grinding device 5 is moved to one end of the slide rail, the grinding device 5 has a structure capable of grinding the entire length of the rolling roll 31. When a device for measuring the roll profile of the rolling roll 31 after grinding is provided, it can be provided on the opposite side of the roll of the grinding device 5.
  • the surface roughness of the roll deteriorates, though not as much as that of the roll 31.
  • the roll surface is improved by grinding with an offline grinder.
  • an in-machine rail 36 for the intermediate roller 32 in the rolling mill 3 and a bogie rail 24 for the intermediate roll 32 on the roll exchange trolley are automatically provided on the roll grinding trolley 1. If the transfer becomes possible, the same principle as the rolling roll 3 1 is used before the rolling mill. Roll roll grinding is possible near and near.
  • the roll rolls exchanged due to the change in the roughness of the roll surface generated by the rolling in the cold rolling mill and the change in the gloss of the roll generated at the end of the rolled material are used in the roll shop. It is possible to automatically grind at a place close to the rolling mill without moving with a crane or the like, and the grinding can obtain the surface texture of the mouth that can be used for rolling again.
  • the size of the cold rolling mill building can be reduced, the equipment can be simplified, the construction cost can be reduced, and the production cost can be reduced by reducing the number of workers working in the roll shop.
  • FIG. 10 is a plan view showing a case in which a mouthpiece carrier 8 is disposed between the roll exchanging cart 2 and the grinding machine frame 6 provided with the grinding machine 5.
  • a rolling mill 3, a roll exchange trolley 2, a mouthpiece transport trolley 8, and a grinding machine frame 6 are sequentially arranged in the roll axis direction, and the vibration from the rolling mill 3 causes the vibration of the grinding machine frame. Propagation up to 6 can be effectively suppressed. Therefore, sufficient grinding could be performed even during rolling, and the grinding ability was improved.
  • the grinding device frame 6 in which the grinding device 5 is disposed is a fixed type, and the vibration from the rolling mill 3 can be further suppressed.
  • the roll can be changed without transferring the roll to a conventional roll shop, cooling the roll to a temperature at which grinding can be performed, and removing and attaching the roll chuck. Increased efficiency c
  • the installation area for equipment related to roll exchange can be reduced, equipment costs during construction can be reduced.
  • FIG. 10 two rolling mills 3 and two roll changing trolleys 2 are used. However, the same effect can be obtained regardless of whether the rolling mill is singly or plurally. Similar to the equipment shown in Fig. 1 to Fig. 3, it is composed of a rail 36 inside the rolling mill and a spindle 38 that rotates the rolling roll 31 at the target speed when rolling.
  • the two roll change trolleys 2 are arranged and used on the operation side opposite to the drive side of the rolling mill 3 provided with the spindles 38, similarly to the equipment shown in FIGS. 1 to 3.
  • Rolling rolls 3 1 with poor surface properties Used to change to a new roll. Then, the entire cart 21, the old shift roll and the new roll are loaded, and the side shift cart 2 2, which can move in the direction perpendicular to the roll axis direction (rolling direction), and the old roll from the rolling mill 3
  • a push-pull device 23 is provided, which is a means for extracting a roll to the shift bogie 22 and moving a roll for introducing a new roll from the side shift bogie 22 to the rolling mill 3.
  • carriage rails 24 a and 24 b for moving and loading the old roll and the new roll, and have the same height as the in-machine rail 36 of the rolling mill.
  • the carriage rails 24 a and 24 b for the old rolling roll and the new rolling roll that can be connected to the in-machine rail 36 of the same width at the position are provided on the side shift carriage 22.
  • 36 and the bogie rails 24a and 24b can be engaged to move the roll.
  • Each roll is provided with a bearing box 34, and the bearing box 34 is provided with wheels so that it can move on rails.
  • the side shift cylinder 1 2] and the side shift rail 21 a are provided on the entire carriage 2. It is provided between 1 and the side shift cart 2 2.
  • the intermediate rail 24 c can be connected to the bogie rails 24 a and 24 b on the side shift bogie 22 and the bogie rail 8 c on the roll transport bogie 8.
  • the roll transport cart 8 can move on the transport cart rail 12a in a direction perpendicular to the roll axis direction, and a drive mechanism that transfers the rolling nip 31 from the roll exchange cart 2 to the roll transport cart 8. And a push-pull device 8a. Then, the rolling roll 31 is moved from the transport carriage rails 8 c and 8 b on the roll transport carriage 8 to the grinding frame rail 13 a on the grinding machine frame 6, and the grinding machine frame is moved from the roll transport carriage 8. 6 hand over.
  • the rolling roll 3 1 extracted from the rolling mill 3 first moves to the roll exchanging trolley 2, and then moves to the roll transporting trolley 8. Since the roll transport cart 8 has a transport truck rail 12a and wheels (not shown) so that it can move in the rolling direction, even in the case of a plurality of rolling mills 3, each of the roll exchange carts 2 Since it can move to the position, each position can be adjusted.
  • the grinding device frame 6 including the grinding device 5 for performing the grinding does not need to move in the direction perpendicular to the roll axis direction (the rolling direction).
  • the grinding device frame 6 can be installed in a fixed range within a movable range in which the roll transfer cart 8 can move.
  • the rolling roll 3 1 transferred from the roll exchanging trolley 2 to the roll transporting trolley 8 is moved by the roll transporting trolley 8 to the grinding unit frame 6 equipped with the grinding unit 5 and further equipped with the grinding unit 5. It is transferred onto the grinding machine frame 6.
  • the method of moving the rolls is such that the rolls are moved on the rails by wheels in the same manner as the method of transferring the rolls from the roll exchange cart 2 to the roll grinding cart 1.
  • the grinding machine frame 6 equipped with the grinding machine 5 has no wheels or driving devices for moving in the direction perpendicular to the roll axis direction (rolling direction) as shown in FIGS.
  • the functions and movements of the other devices are all the same as those of the roll grinding trolley 1 except that the fixed part is different.
  • the grinding device frame 6 in which the grinding device 5 is disposed is a fixed type, and the vibration from the rolling mill 3 can be further suppressed.
  • the roll can be changed without transferring the roll to a conventional roll shop or cooling down to a temperature at which grinding can be performed, and removing and attaching the roll chuck, the efficiency of the roll change operation can be improved, and the rolling work can be performed. Increased efficiency c
  • the installation area for equipment related to roll exchange can be reduced, equipment costs during construction can be reduced.
  • the rolling roll grinding of the rolling mill of the cold rolling equipment is improved in the roll grinding ability during the rolling outside the rolling mill, and the equipment of the cold rolling equipment is simplified.
  • the present invention improves the roll grinding ability of a rolling mill of a cold rolling mill during rolling outside of the rolling mill, simplifies the equipment of the cold rolling mill, and improves the roll changing work. Because it can improve efficiency, it is suitable for rolling roll grinding of rolling equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

L'invention concerne une installation de laminage à froid dans laquelle un cylindre de laminage dont la surface est détériorée par le laminage est rectifiée sur un chariot de rectifiage placé sur un côté d'un chariot de remplacement de cylindres opposé à un laminoire, sans avoir à être transféré à une machine de rectifiage se trouvant dans l'atelier d'entretien des cylindres, pour être réutilisé pour le laminage. Le laminoir pourvu des cylindres de laminage, le chariot de remplacement des cylindres de laminage et le chariot de rectifiage des cylindres de laminage sont disposés l'un derrière l'autre, dans le sens de l'axe des cylindres, les cylindres de laminage pouvant être transférés entre le laminoir et le chariot de remplacement des cylindres, et entre le chariot de remplacement des cylindres et le chariot de rectifiage des cylindres.
PCT/JP1996/002409 1996-08-28 1996-08-28 Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres WO1998008629A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1996/002409 WO1998008629A1 (fr) 1996-08-28 1996-08-28 Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1996/002409 WO1998008629A1 (fr) 1996-08-28 1996-08-28 Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres

Publications (1)

Publication Number Publication Date
WO1998008629A1 true WO1998008629A1 (fr) 1998-03-05

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Application Number Title Priority Date Filing Date
PCT/JP1996/002409 WO1998008629A1 (fr) 1996-08-28 1996-08-28 Installation de laminage pourvue d'un chariot de rectifiage de cylindres, et procede de remplacement de cylindres

Country Status (1)

Country Link
WO (1) WO1998008629A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2455093C2 (ru) * 2010-07-22 2012-07-10 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") Способ обработки поверхности бочек прокатных валков
CN108238573A (zh) * 2016-12-26 2018-07-03 宝山钢铁股份有限公司 一种轧机内提升轨道梁拆装装置及方法
KR20190125864A (ko) * 2018-04-30 2019-11-07 주식회사 포스코 선재 압연기의 이송대차장치

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6295867U (fr) * 1985-12-06 1987-06-18
JPH05115908A (ja) * 1991-10-24 1993-05-14 Ishikawajima Harima Heavy Ind Co Ltd 圧延ロールのロールシヨツプおよび台車
JPH07323311A (ja) * 1994-05-31 1995-12-12 Mitsubishi Heavy Ind Ltd ロール引込装置
JPH0824916A (ja) * 1994-07-15 1996-01-30 Nisshin Steel Co Ltd ロールショップのレイアウト

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6295867U (fr) * 1985-12-06 1987-06-18
JPH05115908A (ja) * 1991-10-24 1993-05-14 Ishikawajima Harima Heavy Ind Co Ltd 圧延ロールのロールシヨツプおよび台車
JPH07323311A (ja) * 1994-05-31 1995-12-12 Mitsubishi Heavy Ind Ltd ロール引込装置
JPH0824916A (ja) * 1994-07-15 1996-01-30 Nisshin Steel Co Ltd ロールショップのレイアウト

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2455093C2 (ru) * 2010-07-22 2012-07-10 Открытое акционерное общество Акционерная холдинговая компания "Всероссийский научно-исследовательский и проектно-конструкторский институт металлургического машиностроения имени академика Целикова" (ОАО АХК "ВНИИМЕТМАШ") Способ обработки поверхности бочек прокатных валков
CN108238573A (zh) * 2016-12-26 2018-07-03 宝山钢铁股份有限公司 一种轧机内提升轨道梁拆装装置及方法
KR20190125864A (ko) * 2018-04-30 2019-11-07 주식회사 포스코 선재 압연기의 이송대차장치
KR102086224B1 (ko) * 2018-04-30 2020-03-06 주식회사 포스코 선재 압연기의 이송대차장치

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