US3818743A - Rolling mills - Google Patents

Rolling mills Download PDF

Info

Publication number
US3818743A
US3818743A US00368521A US36852173A US3818743A US 3818743 A US3818743 A US 3818743A US 00368521 A US00368521 A US 00368521A US 36852173 A US36852173 A US 36852173A US 3818743 A US3818743 A US 3818743A
Authority
US
United States
Prior art keywords
roll
rolls
work
pair
work rolls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00368521A
Other languages
English (en)
Inventor
T Kajiwara
N Sonobe
H Nishi
M Hayashi
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
Priority claimed from JP46006143A external-priority patent/JPS5019510B1/ja
Priority claimed from JP5832471A external-priority patent/JPS509739B1/ja
Priority to GB580972A priority Critical patent/GB1351074A/en
Priority to FR7204523A priority patent/FR2125363B1/fr
Priority to DE2206912A priority patent/DE2206912C3/de
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to US00368521A priority patent/US3818743A/en
Application granted granted Critical
Publication of US3818743A publication Critical patent/US3818743A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • 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
    • B21B13/142—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 by axially shifting the rolls, e.g. rolls with tapered ends or with a curved contour for continuously-variable crown CVC
    • 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
    • B21B2013/028—Sixto, six-high stands
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/02—Roll bending; vertical bending of rolls
    • B21B2269/04—Work roll bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/16—Intermediate rolls
    • 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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/12—Toothed-wheel gearings specially adapted for metal-rolling mills; Housings or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B35/00—Drives for metal-rolling mills, e.g. hydraulic drives
    • B21B35/14—Couplings, driving spindles, or spindle carriers specially adapted for, or specially arranged in, metal-rolling mills
    • B21B35/142—Yielding spindle couplings; Universal joints for spindles
    • B21B35/143—Yielding spindle couplings; Universal joints for spindles having slidably-interengaging teeth, e.g. gear-type couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements

Definitions

  • ABSTRACT A rollingmill in which a pair of upper and lower intermediate rolls which are shiftable in the axial direction according to the width of a material to be rolled are interposed between a pair of upper and lower work rolls and a pair of upper and lower backup rolls, and the flatness of the rolled material is controlled by the combined effects of the adjustably axially shifted intermediate rolls andthe roll bending action.
  • This invention relates to rolling mills and more particularly to such rolling mills which have a unique roll arrangement and roll structure. andare provided-with a unique roll driving system.
  • the phenomenon in which the work-rolls are bent under'rolling pressure is attributable to the fact that the opposite end portions of the working rolls which are not in contact with the material being rolled are sub- I jected to the bending moments caused. by the contact load with backup rolls. and such a phenomenon naturally causes a remarkable thickness unevenness of the rolled plate near the boundary between the portions of the work rolls which are in engagement with the material and the portions of the same which are not in engagement with the material, or at. the opposite edge portions of the rolled plate.
  • the thickness unevenness becomes particularly greater as the width of the rolled plate becomes narrower relative to the length of the work rolls because the bending moments becomes larger and the deflection of the work rolls becomes greater.
  • the effect of the roll bending method is largely influenced by the diameter of the work rolls. F or'instance, when the diameter of the work tions of the rolls. Furthermore, since the roll bending force is subjected to a limitation by the strength or roll necks and the service live of bearings, the adjustment of the roll bending effect is possible'only within a'limrolls is small, the roll bending action is restricted by the backup rolls and its effect appears only at the end por- However, in actual rolling mills it is usual that the width of the rolled materials frequently changes and, if the rolls are exchanged at each time the width changes, the working efficiency would be reduced greatly. In addition, a large number of rolls having different initial crowns must be provided, which increases the number of spare rolls and increases the operational cost, with theresult that the production cost becomes high.
  • the first object of the present invention is to provide a rolling'mil] in which, in transmitting the rolling load to work rolls, the influence of the bending moments occurring in the work rollson the flatness in the widthwise direction of the rolled material is minimized, thereby to improve the flatness of the rolled material.
  • the second object of theinvention is to provide a rolling mill in which the values of the bending moments acting. on work rolls are made small, thereby to minimize the bending of the workv rolls and improve the flatness of the rolled material.
  • the third object of the invention is to provide a rolling mill in which, even when the width of the rolled material is required to be changed frequently, the shape of each rolled material can be controlled without changing rolls, so that the working efficiency of the rolling mill is enhanced.
  • the fourth object of the invention is to provide a rolling mill having work rolls of high rigidity, in which the flatness of the rolled material can be improved without making the end portions of the work rolls or intermediate rolls complicated in shape.
  • the present invention is applied to rolling mills of the type having work rolls of high rigidity, e.g. workrolls whose diameter is substantially larger than 18. percent of the length of the rolling surface (the effective length of the roll surface which can substantially be used for rolling), and backup rolls respectively disposed exteriorly of the work rolls.
  • the rolling mill according to the invention is characterized in that intermediate rolls are interposed respectively between work rolls and backup rolls, said intermediate rolls being of such type that the diameter of the portions which can be brought into contact with the work rolls is substantially constant over the length of such portions and there is provided means for shifting each intermediate roll relative to the associated work roll in the axial direction of the roll so that one end of said portions of said intermediate roll may be positioned in a vertical plane including one widthwise end of a material being rolled or adjacent to said plane, whereby a bending moment is developed in one of the work rolls which acts in the same direction as the direction of the bending moment developed in the cooperating work roll, due to the pressure distribution between the work roll and intermediate roll, the high rigidity of the work roll and the relative position of the work roll and the relative position of the work roll and inten'nediate roll.
  • the relative position of the work roll and the material being rolled may be adjusted based on the rolling load distribution between said work roll and said material, or means for applying a roll bending force to the end portion of the work roll may be used.
  • the fifth object of the present invention is to provide a novel and efiective rolling mill in which the relation between the plate width change and the deformation of work rolls and the relation between the roll bending effect and the length of backup rolls are combined in an ingenious manner, whereby the above-described problems have been solved.
  • the rolling mill comprises a pair of upper and lower work rolls supported by metal chocks respectively being vertically movable and providing for a roll bending action, a pair of upper and lower intermediate rolls respectively arranged above and below said work rolls for contact therewith and being shiftable in the axial direction according to the width of a material to be rolled and backup rolls arranged above and below said intermediate rolls for contact therewith, said intermediate rolls being adjustably axially shifted to control the flatness of the rolled material in cooperation with the roll bending action.
  • a pair of upper and lower intermediate rolls which are axially shifted such that one end of each roll is placed in line with one end of the material being rolled, whereby one end of each work roll has the same rolling effect as obtainable when one end of each backup roll is in alignment with one edge of the rolled plate, and thus the bending moments as mentioned above are decreased.
  • the effect on the other end of each work roll is insufficient because the opposite ends of a pair of the upper and lower intermediate rolls cannot always be located in registration with the opposite edges of of the material being rolled in response to the change of width of said material.
  • the sixth object of the invention is to provide a rolling mill of the character described above, which is provided with a novel roll driving system to drive said work rolls and cause axial shifting of the intermediate rolls.
  • the rolling mill described previously there must be provided means for shifting the intermediate rolls in the axial direction and retaining them at the desired positions, in addition to the driving shafts to drive the work rolls. Therefore, the rolling mill tends to become large in size and complicated in construction. Further, the space around the main body of the rolling mill becomes extremely narrow, making the maintenance and inspection difficult.
  • the present invention provides a rolling mill-of the character described above, which is so constructed that driving of the work rolls and axial shifting of the intermediate rolls are effected by the same driving shafts.
  • the seventh object of the invention is to provide a rolling mill of the character described above, in which the thrust loads acting on the axially shiftable intermediate rolls are received rationally and effectively.
  • the rolling mill is characterized in that the driving shafts to drive the work roll and cause axial shifting of the intermediate rolls are extended through a roll driving pinion stand speed reduction device and connected to a roll shifting and retaining device.
  • the roll shifting and retaining device need not be disposed in the narrow space around the main body of the rolling mill and can be disposed rearwardly of the pinion stand speed reduction device where the maintenance and inspection are easy.
  • the thrusts acting on the intermediate rolls can be received by the roll shifting and retaining device, without the necessity for providing any additional means.
  • the rolling mills according to the present invention each is a sort of multistage rolling mill comprising eight or six rolls, but is substantially free of the following defects of the conventional multistage rolling mills.
  • the space around the upper and lower work rolls has been so narrow that accessories necessary for carrying out a smooth rolling operation, e.g. plate pressing means required on the entrance and exit sides of the roll stand for guiding the material being rolled, cobble guards necessary for protecting rolls against damage at V the'breakage of rolled material and cooling means for cooling the work rolls, cannot be effectively provided therein.
  • the narrow space around the upper and lower work rolls has inevitably impaired the workability and safety in maintenance and inspection.
  • such problems are substantially solved owing to the novel roll arrangement which provides a sufficiently wide space around the work rolls.
  • the eighth object of the invention is to provide a rolling method in which is used a rolling mill of the type having work rolls of high rigidity and in which the shape of the rolled material can be controlled without changing the rolls even when the required plate width of the rolled material varies.
  • the ninth object of the invention is to provide a novel and simple rolling method.
  • FIG. 1 is a front elevational view of an embodiment of the rolling mill according to the present invention.
  • FIG. 2 is a view looking in the direction of the arrows llll of FIG. 1;
  • FIG. 3 is a view of another embodiment of the invention looking in the direction of the arrows lll-lll of FIG. 4;
  • FlG. 4 is a sectional side view of the rolling mill shown in FIG. 3;
  • FIG. 5 is a sectional view of one form of the universal gear coupling used in the rolling mill of the invention.
  • F IG. 6 is a top plan view of one form of the roll shifting and retaining device used in the rolling mill of the invention.
  • FIG. 7 is a schematic illustration showing the arrangement of accessories of the rolling mill of the invention.
  • FIG. 8 is a graphic diagram showing the thickness distribution of a rolled material rolled by a conventional four-high rolling mill.
  • FIG. 9 is a graphic diagram similar to FIG. 8 but showing the thickness distribution of a rolled material rolled by the rolling mill of the invention.
  • FIGS. a, 10b and 10c are schematic views respectively showing the rolling mill according to the present invention in operation, wherein the intermediate rolls are axially shifted to control the flatness of the rolled material in co-operation with the roll bending action.
  • FIGS. 1 and 2 a pair of vertically arranged work rolls 2, 3 which directly rolls a material 1 to be rolled are supported by metal chocks 4, 4 and 5, 5' mounted in roll housings 6, 6.
  • the metal chocks are vertically movably arranged in the inside of left and right projections 7, 8 of the roll housings 6, 6' respectively. in the projections 7, 8 are also disposed hydraulic rams'9, 10 for bending the work rolls. Therefore, while the rolling mill is a multiple stage rolling mill, bending of the work rolls is easily achieved as in a conventional four-high rolling mill.
  • a pair of intermediate rolls ll, 12 which are brought into contact with the upper and lower work rolls 2, 3 are arranged with their center lines substantially vertically aligned with the upper and lower work rolls 2, 3 are arranged with their center lines substantially vertically aligned with the center lines of said work rolls.
  • These intermediate rolls ll, '12 are supported by two upper and lower backup rolls 25, 26 and 27, 28 respectively.
  • each of the intermediate rolls ll, 12 has at least one end thereof progressively reduced in diameter in a conical or other suitable shape.
  • the right hand end 13 of the intermediate roll 11 is tapered into a conical shape and the opposite end 14 of the intermediate roll 12 is tapered into a conical shape.
  • the ends of the intermediate rolls may be formed in a cylindrical shape.
  • the intermediate rolls l1, 12 respectively have extensions 15, 16 at one ends thereof for causing an axial movement of said rolls and joints l7, 18 are connected to said extensions l5, 16, through which the intermediate rolls are connected to suitable driving sources (not shown) consisting of hydraulic devices or electric motors.
  • suitable driving sources not shown
  • Each of the joints [7, 18 is composed of abeari'ng 19, a bearing box 20, a universal coupling piece 21, a metal 22, an end of a spindle 23 and a pin 24.
  • the backup rolls 25, 26 are supported by metal chocks 29, 29' mounted in the roll housing 6, 6', and the backup rolls 27, 28 are supported by similar metal chocks 30, 30, all through a roll neck bearing 31.
  • These metal chocks respectively have recesses 32, 33 at the central portions thereof for receiving the intermediate rolls ll,
  • reference numerals 34, 35 designate backup roll balancing hydraulic rams; 36, 36 depression screws connected with the metal chocks 29, 29' for depressing the rolls; 37 backup roll driving couplings and 38 spindles.
  • the tapered ends l3, 14 are substantially in the region out of contact with the work rolls 2, 3 and backup rolls 25, 26, 27, 28. Therefore, the end portions which can contact the work rolls 2, 3 do not include the tapered ends l3, l4. Namely, the tapered ends do not perform special functions in the rolling operation. Therefore, the end portions of the intermediate rolls refer to the portions adjacent the ends of the effective surfaces of the rolls substantially participating in the rolling operation, and the ends of the intermediate rolls refer to the terminal ends of the effective rolling surfaces and not the terminal ends of the tapered ends. in the production of the intermediate rolls, however, it is permissible to form the tapered ends and incorporate such intermediate rolls in the rolling mill. The end portions of the intermediate rolls which can contact the work rolls 2, 3 may substantially be the same in diameter as the central portions thereof, it being unnecessary to use a complicated tapered end portion as in US. Pat. No. 2,776,586 to Sendzimir.
  • the work rolls 2, 3 used in the present invention is characterized by high rigidity. Namely, the present invention is applied to rolling mills of the type wherein work rolls, because of their high rigidity, are each supported by one intermediate roll.
  • the present invention has no significance when applied to rolling mills of the type using work rolls of low rigidity which are each supported by two intermediate rolls to prevent horizontal deflection thereof.
  • the diameter of the work rolls is substantially larger than 18 percent and at least l5 percent and usually 25 percent of the length of the rolling surfaces thereof, and is 250 mm for l8 percent and 350 mm for 25 percent.
  • the diameter to surface length ratio of the work rolls in Sendzimir is smaller than 6.l5 percent and the diameter of the work rolls is smaller than 86 mm.
  • the intermediate rolls l1, 12 are arranged with their tapered ends 13, 14 located at the opposite sides of the material 1 to be rolled, the work rolls 2, 3 are deformed by the moments caused by the contact load with the backup rolls and thus excessive rolling pressures otherwise applied to the material 1 by the opposite ends of the work rolls can be greatly prevented.
  • the ends of the intermediate rolls are positioned on that side of a vertical plane including one widthwise end of the material 1 being rolled which is closer to the pass-line and adjacent said plane, or alternatively it is possible to position the ends of the intermediate rolls ll, 12 in said plane or on that side of said plane remote from the pass-line and adjacent said plane.
  • each work roll does not contact the effective end portion of the associated intermediate roll, as may be seen in the drawings.
  • Such change in the relative position can be achieved in accordance with the desired plate width of the rolled material without replacing the work rolls 2, 3 or intermediate rolls ll, 12.
  • a remarkable roll bending effect of the hydraulic rams 9, 10 can be obtained since one ends of the work rolls 2, 3 are not bound by the backup rolls.
  • FIGS. 10a, 10b and 10c are for explaining the effect of the present invention.
  • FIG. 10a shows the arrangement in which one end of each of the upper and lower intermediate rolls 1], I2 is positioned on that side of the vertical plane including one widthwise end of the material 1 being rolled which is closer to the pass-line I50 and adjacent said line (the tapered ends 13, 14 are not shown as .they have no relation with the effect of the present invention).
  • FIG. 10b shows the case wherein the rolling is carried out by applying roll bending forces I51, 151' between the end portions of the work rolls 2, 3, i.e., between the work roll chocks 4, 47 and 5, 5', in the state of FIG. a, and FIG.
  • 10c shows the case wherein the rolling is carried out with one end of each of the intermediate rolls ll, 12 positioned on the opposite side of the pass-line with respect to the vertical plane including one widthwise end of the mate rial I being rolled and adjacent said line (including the case where said one end is positioned in said plane) and with roll bending forces applied to the end portions of the work rolls 2, 3 as described above.
  • FIG. 1011 the relative positions of the-work rolls 2, 3 and intermediate rolls 1], 12 are different between the upper and lower sides as shown and a contact pressure distribution F, exists in the lower work roll 3 which results from the contact between the end portion of said work roll 3 and the intermediate roll 12 and which does not exist in the upper work roll 2.
  • a counterclockwise bending moment M is developed in the lower work roll 3
  • a counterclockwise bending moment M is developed in the upper work roll 2 due to the rolling pressure distribution F between the work roll 2 and the material 1 being rolled because the end of the intermediate roll 11 is located on that side of the vertical plane including widthwise end of the material 1 which is closer to the pass-line.
  • the bending moments acting on the work rolls 2, 3 are substantially M, and M
  • the feature of the arrangement of FIG. 10a lies in that the bending moment M, is developed in the work roll 2 which actsin the same direction as the bending moment M, developed in the other work roll 3.
  • the fact that the bending moments M,, M, are developed in the two opposite work rolls 2, 3 in the same direction means nothing but that the influence of the bending moments on the flatness of the rolled material 1 can be minimized. Namely, the influence of the bending moments can be completely eliminated when l M,
  • the bending moment M can be developed in one of the work rolls which is acting in the same direction as the bending moment M, develoepd in the opposite work roll, by the effects of the contact pressure distribution F, between the work roll and intermediate roll, the contact pressure distribution F between the work roll and the material being rolled, the high rigidity of the work rolls which provides such contact pressure distributions and the aforesaid relative positions.
  • a bending moment M is developed in the work roll 3 due to F similar to the preceding case and a bending moment M smaller than M, is developed in the other work roll 2 due to F Further, by the application of the roll bending force 153 in the same manner as in FIG. 10b, bending moments M, and M, are respectively developed acting in the opposite directions to each other, which are in the relation of l M,,']
  • the bending of the work roll 3 can be minimized by applying the roll bending forces I51, 153. Namely, IM, +M IM,] (because M, and M have reverse symbols).
  • M,l because IM, M l
  • the bending of the work roll can be made smaller when the roll bending force is additionally applied than when merely the bending moment is developed in the work roll by adjusting the relative position of the intermediate roll and work roll. It will be obvious that, while two backup rolls are arranged on each side of the work rolls in FIG. 2, only one backup roll may be arranged on each side.
  • a pair of upper and lower work rolls 46, 47 are rotatably supported at their opposite ends by metal chocks 52, 53 mounted in a roll housing 41.
  • the metal chocks 52, 53 respectively are vertically movably arranged in the inside of left and right projections 54, 55 of the roll housing 41.
  • In the projections 54, 55 are also disposed hydraulic rams 56, 57 for bending the upper and lower work rolls and a backup roll balancing hydraulic ram 63.
  • a pair of upper and lower intermediate rolls 44, 45 respectively in contact with the work rolls 46, 47 are 9 arranged with their center lines substantially vertically aligned with the center lines of said upper and lower work rolls, and are supported at their opposite ends by metal chocks 50, 51.
  • the intermediate rolls 44, 45 are progressively reduced in diameter at one ends opposite to each other, into a conical or other suitable shape.
  • the right hand end 64 of the intermediate roll 44 is tapered in a conical shape and the opposite end 65 of the intermediate roll 45 is tapered in a conical shape.
  • intermediate rolls 44, 45 are provided a pair of upper and lower backup rolls 42, 43 with their center lines thereof in substantially vertical alignment with the center lines of the former and with the opposite ends thereof supported by metalchocks 48, 49 mounted in the roll housing 41.
  • Roll position adjusting screws 62 are connected to the upper side of the metal chock 48, and hydraulic rams 61 and cylinders 60 are provided below the metal chock 49 to perform a roll depressing operation.
  • the intermediate roll supporting metal chocks 50, 51 are respectively received in recesses 58, 59 in the backup roll supporting metal chocks 48, 49 to provide for movement of the intermediate rolls 44, 45 in the vertical and axial directions.
  • driving shafts 70, 71 to drive the work rolls 46, 47 and cause an axial movement of the intermediate rolls 44,45 are connected to one ends of said intermediate rolls 44, 45 through universalgear couplings 72, 73 respectively.
  • the driving shafts 70, 71 in turn are connected through universal gear couplings 74, 75 to spline shafts 77, 78 extending through a pinion stand speed reduction device 76.
  • the spline shafts 77, 78 are respectively connected to roll shifting and retaining devices 87, 88 through couplings 81, 82 each having a thrust bearing 79, said roll shifting and retaining devices 87, 88 respectively comprising reciprocating shafts 83, 84 and hydraulic cylinders 85, 86.
  • Each of the universal gear couplings 72-75 is of the construction in which an inner sleeve 90 shrink-fitted over the driving shaft 70 and an outer sleeve 90 fixed to the intermediate roll 44 by a pin 94 are rotatably connected together by means of gears 91, 93 and further said inner and outer sleeves 90, 92 are coupled together by means of a coupler 95 having a spherical head 96, a pressing plate 97 and a nut 98.
  • the thrust bearing-79 rotatably supports the spline shafts 77, 78 and also receives thrusts acting on the intennediate rolls 44, 45.
  • the roll shifting and retaining devices 87, 88 cause axial movement of the intermediate rolls 44, 45 and also retain said intermediate rolls in predetermined 'positions by receiving the thrusts acting on said rolls.
  • the roll shifting and retaining devices may be of the type utilizing a screw and a link mechanism as shown in FIG. 6. Namely, the device shown in FIG. 6 reciprocates the spline shaft 77 through a link 101 which makes a pivotal movement about a frame lconnected to the pinion stand speed reduction device 76, and a universal coupling 102. The other end of the link 101 is connected with a nut 104 through a lever 103.
  • the nut 104 is reciprocably mounted on a screw 106 rotatably mounted on a frame 105.
  • the screw 106 is rotated from an electric motor 107 through pulleys 108, 109 and a belt 110.
  • a transmission shaft 115 connected to a roll driving electric motor not shown is connected through a coupling 116 to a pinion 117 which is provided in the pinion stand speed reduction device 76.
  • the pinion 117 meshes with an upper pinion gear 118 which is meshing with a lower pinion gear 119. Both of the pinion gears 118, 119 are rotatably supported by a frame 122 through bearings 120, 121 respectively.
  • the pinion gears 118, 119 respectively are formed with axial bores through which the spline shafts 77, 78 extend and splines 123, 124 are formed in said axial bores to provide for reciprocal motion of the spline shafts 77, 78 and to rotate the same.
  • the work rolls 46, 47 are deformed by the moments caused by the contact load with the backup rolls 42, 43 and thereby excessively large rolling pressure otherwise applied to the material by the opposite ends of said work rolls can be prevented. Furthermore, since one end portions of the work rolls 46, 47 are, not bound by the backup rolls 42, 43, a remarkable roll bending effect by the roll bending hydraulic rams 56, 57 can be obtained.
  • FIGS. 8 and 9 illustrate the thickness distributions of rolled materials having different widths which were rolled by the same work rolls.
  • FIG. 8 shows the results of rolling by a conventional four-high rolling mill
  • FIG. 9 shows the results of rolling by the rolling mill according-to the invention.
  • the work rolls used had a diameter of 250 mm and a length of 1,420 mm.
  • the rolling operation was carried out on three types of mate rial respectively having a width of 760 mm, 920 mm and 1,220 mm, under three different roll bending forces of 0, l0 Ts and 20 Ts.
  • the symbols A1, A2, A3 depicted in the figures indicate the run numbers.
  • the roll bending force is insufficient when the plate width is small and is excessively large when the plate width is large, and, even if the best conditions of A3, B3 and C1 are selected, the deformation of the work rolls cannot be compensated at all by the roll bending force, with the result that a considerably large thickness unevenness occurs.
  • the roll bending effect is outstandingly amplified and the deformation of the work rolls is essentially compensated over the width range of the material from a small width to a large width.
  • the thickness unevenness of the rolled plate can be remarkably improved as compared with the conventional four-high rolling mill, for any width of the material.
  • a rolling mill comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, a pair of upper and lower backup rolls arranged exteriorly of said work rolls, a pair of upper and lower intermediate rolls respectively interposed between said work rolls and said backup rolls, the diameter of the portions of said intermediate rolls which can contact the work rolls being substantially constant over the length of such portions, means for changing the relative position of the intermediate roll and work roll in the axial direction of the rolls such that one end of said portions of the intermediate rolls be positioned in or adjacent the plane including one widthwise end of the material being rolled thereby to form a non-contacting region on the work roll relative to the intermediate roll, and means for developing a bending moment in one of the work rolls in the same direction as the bending moment developed in the other work roll under the effect of the pressure distribution between the work roll and intermediate roll and the aforesaid relative position, whereby the shape of the rolled material is controlled.
  • a rolling mill according to claim 1, wherein a pair of said upper and lower intermediate rolls are supported by two upper backup rolls and two lower backup rolls respectively and said upper and lower backup rolls are supported by a single metal chock vertically movably mounted in a roll housing.
  • a rolling mill according to claim 1, wherein a pair of said upper and lower intermediate rolls are in contact with one upper and lower backup rolls arranged with their center lines in substantially vertical alignment with the center lines of said intermediate rolls and each intermediate roll is supported by a vertically movable metal chock received in a recess formed in the backup roll supporting metal chock.
  • a rolling mill according to claim 1, wherein a pair of said upper and lower work rolls respectively are supported by metal cho cks vertically movably mounted in the inside of left and right projections formed on a roll housing, and hydraulic rams for bending said work rolls are disposed in said projections.
  • a rolling mill comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, a pair of upper and lower backup rolls arranged exteriorly of said work rolls, a pair of upper and lower intermediate rolls respectively interposed between said work rolls and said backup rolls, the diameter of the portions of said intermediate rolls which can contact the work rolls being substantially constant over the length of such portions, driving shaft for shifting the intermediate roll in the axial direction of the roll such that one end of said portion of the intermediate roll be positioned in or adjacent the plane including one widthwise end of the material being rolled and serving simultaneously as a driving shaft for the work roll, thereby to form a non-contacting region on the work roll relative to the intermediate roll, and means for developing a bending moment in one of the work rolls in the same direction as the bending moment developed in the other work roll under the effect of the pressure distribution between the work roll and intermediate roll and the aforesaid relative position, whereby the shape of the rolled material is controlled.
  • a rolling mill according to claim 5, wherein the driving shafts to drive said work rolls and to cause said intermediate rolls to shift in the axial direction are respectively connected to said intermediate rolls.
  • a rolling mill according to claim 5, wherein the driving shaft to drive said work rolls and to cause said intermediate rolls to shift in the axial direction are extended through roll driving pinion stand speed reduction devices and connected to roll shifting and retaining devices provided rearwardly of said speed reduction devices respectively.
  • a rolling mill wherein one end of said driving shaft is connected through a universal gear coupling to said intermediate roll and the other end thereof is connected through a universal gear coupling to a spline shaft extending through a pinion gear provided in said pinion stand speed reduction device, and said spline shaft is connected to the roll shifting and retaining device through a coupling having a thrust bearing, and further said pinion gear is connected to a roll driving electric motor.
  • a rolling mill comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, the diameter of said work rolls being at least 15 percent of the length of the rolling surface thereof, a pair of upper and lower backup rolls arranged exteriorly of said work rolls, a pair of intermediate rolls each arranged on each side of said work rolls between the work roll and backup roll, said intermediate roll having a generally flat surface, means for changing the relative position of the intermediate roll and work roll in the axial direction of the rolls such that one end of the effective portion of said intermediate roll be positioned in or adjacent the plane including one width-wise end of the material being rolled thereby to form a non-contacting region on the work roll relative to the intermediate roll, and means for developing a bending moment in one of the work rolls in the same direction as the bending moment developed in the other work roll under the effect of the pressure distribution between the work roll and intermediate roll and the aforesaid relative position, whereby the shape of the rolled material is controlled.
  • a rolling mill according to claim 9, wherein said means for developing a bending moment in one of the work rolls consists of means for applying a roll bending force to the end portion of the work roll.
  • a rolling mill according to claim 9, wherein said means for shifting the intermediate roll in the axial direction of the roll serves simultaneously as a driving shaft for the work roll and consists of a drive shaft connected to the respective intermediate rolls.
  • a rolling mill Comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, the diameter of said work rolls being at least 15 percent of the length of the rolling surface thereof, intermediate rolls which are shifted in the axial direction according to the plate width of the material being rolled such that one end of the effective portions thereof be positioned adjacent the plane including one widthwise end of the material,
  • said intermediate rolls being arranged each on each side of the work rolls, a drive shaft for shifting the intermediate roll in the axial direction and serving simultaneously as a driving shaft for the work roll, a pair of upper and lower backup rolls arranged exteriorly of the intermediate rolls for contact with said intermediate rolls, metal chocks respectively disposed vertically movably in left and right peojections provided on a roll housing to support said pair of upper and lower work rolls, hydraulic rams provided on said projections, and roll shifting and holding means provided rearwardly of a roll driving pinion stand speed reducing means, said drive shaft extending through said speed reducing means and connected to said roll shifting and holding means, one end of said drive shaft being connected to said intemiediate roll through a universal gear.
  • a rolling method using a rolling mill comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, a pair of upper and lower backup rolls arranged exteriorly of said work rolls, and a pair of intermediate rolls each arranged on each side of the work rolls between the work roll and intermediate roll, said method comprising positioning one end of the effective portion of the intennediate roll on that side of the plane including one widthwise end of the material being rolled which is closer to the pass-line and adjusting the position of said end such that a bending moment may be developed in one of the work rolls in substantially the same size and in the same direction as the bending moment developed in the other work roll, during the rolling operation under the effects of the contact pressure distribution between the work roll and intermediate roll and the high rigidity'of the work rolls.
  • a rolling method using a rolling mill comprising a pair of upper and lower work rolls of high rigidity to perform rolling of a material by contact therewith, a pair of upper and lower backup rolls arranged exteriorly of said work rolls, and a pair of intermediate rolls each arranged on each side of the work rolls between the work roll and intermediate roll, said method comprising positioning one end of the effective portion of the intermediate roll in or adjacent the plane including one widthwiseend of the material being rolled and, when a bending moment is developed in one of the work r'olls which is larger than the bending moment developed in the other work rolls under the effect of the contact pressure distribution between the work roll and intermediate roll, the high rigidity of the work rolls and the aforesaid positional relation, applying to said other work roll a bending moment larger than and acting in the opposite direction to the bending moment developed in said one work roll, whereby the directions of the total moments acting on the respective work rolls are made the same and the sizes thereof are substantially equalized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Metal Rolling (AREA)
US00368521A 1971-02-15 1973-06-11 Rolling mills Expired - Lifetime US3818743A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB580972A GB1351074A (en) 1971-02-15 1972-02-08 Rolling mills
FR7204523A FR2125363B1 (https=) 1971-02-15 1972-02-10
DE2206912A DE2206912C3 (de) 1971-02-15 1972-02-14 Walzgerüst
US00368521A US3818743A (en) 1971-02-15 1973-06-11 Rolling mills

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP46006143A JPS5019510B1 (https=) 1971-02-15 1971-02-15
JP5832471A JPS509739B1 (https=) 1971-08-04 1971-08-04
US22455072A 1972-02-08 1972-02-08
US00368521A US3818743A (en) 1971-02-15 1973-06-11 Rolling mills

Publications (1)

Publication Number Publication Date
US3818743A true US3818743A (en) 1974-06-25

Family

ID=27454430

Family Applications (1)

Application Number Title Priority Date Filing Date
US00368521A Expired - Lifetime US3818743A (en) 1971-02-15 1973-06-11 Rolling mills

Country Status (4)

Country Link
US (1) US3818743A (https=)
DE (1) DE2206912C3 (https=)
FR (1) FR2125363B1 (https=)
GB (1) GB1351074A (https=)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943742A (en) * 1973-08-24 1976-03-16 Hitachi, Ltd. Rolling mill
US4162627A (en) * 1972-07-17 1979-07-31 Hitachi, Ltd. Rolling mill
DE2919105A1 (de) * 1978-05-19 1979-11-22 Sendzimir Inc T Walzwerk
US4194382A (en) * 1976-11-26 1980-03-25 Hitachi, Ltd. Rolling mill
EP0026903A1 (en) * 1979-10-04 1981-04-15 Hitachi, Ltd. Rolling mill
US4270377A (en) * 1978-05-19 1981-06-02 T. Sendzimir, Inc. Eighteen high rolling mill
US4311030A (en) * 1978-12-14 1982-01-19 Nippon Steel Corporation Method and apparatus for controlling temper-rolled profile of cold rolled steel strip after continuous annealing
US4320643A (en) * 1979-01-17 1982-03-23 Hitachi, Ltd. Method and apparatus for correcting asymmetrical condition in rolling mill
EP0043869A3 (en) * 1980-07-07 1982-04-28 Hitachi, Ltd. Roll for rolling mill
EP0067040A3 (en) * 1981-06-03 1983-06-15 Hitachi, Ltd. Rolling mill
US4499748A (en) * 1982-01-06 1985-02-19 Hitachi, Ltd. Rolling mill
DE3331055A1 (de) * 1983-08-29 1985-03-14 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschieblichen arbeitswalzen
EP0181474A3 (en) * 1984-10-13 1987-01-07 Sms Schloemann-Siemag Aktiengesellschaft Six-high roll stand
EP0226024A1 (de) * 1985-12-16 1987-06-24 Sms Schloemann-Siemag Aktiengesellschaft Vorrichtung zum axialen Verschieben von Arbeitswalzen
US4881396A (en) * 1987-04-09 1989-11-21 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill stand with axially slidable rolls
US5239851A (en) * 1989-05-31 1993-08-31 Hitachi, Ltd. Rolling method of multi-high rolling mill for obtaining accurate sheet crown
US5653137A (en) * 1989-05-31 1997-08-05 Hitachi, Ltd. Five-high rolling mill
EP1020238A4 (en) * 1997-09-04 2004-07-21 Hongzhuan Zheng ROLLING MILL WITH TWO-DIMENSIONALLY CONTROLLED ROLL BENDING
WO2007039187A1 (de) 2005-10-03 2007-04-12 Siemens Vai Metals Technologies Gmbh & Co Walzgerüst mit verschiebevorrichtung
US20110232350A1 (en) * 2008-03-27 2011-09-29 Hans-Georg Hartung Roll stand
CN103521530A (zh) * 2013-10-17 2014-01-22 浙江华达新型材料有限公司 板带轧机及板带边缘形状控制方法
WO2016058234A1 (zh) * 2014-10-14 2016-04-21 江苏甬金金属科技有限公司 一种二十辊中间辊推辊装置
CN109530440A (zh) * 2018-12-30 2019-03-29 衡阳市鑫诚和重型机械设备制造有限公司 异步非对称轧制轧机布局系统
US20220168790A1 (en) * 2019-04-04 2022-06-02 Sendzimir Japan, Ltd. Multistage rolling mill

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2366413C2 (de) * 1972-07-07 1984-04-19 Hitachi, Ltd., Tokio/Tokyo Vorrichtung zur Steuerung der Ebenheit und Parallelität von Walzgutoberflächen
JPS5835765B2 (ja) * 1978-02-18 1983-08-04 新日本製鐵株式会社 スリ−ブ遊嵌ロ−ルを有する圧延機
EP0047155A3 (en) * 1980-09-03 1982-05-12 Davy-Loewy Limited Rolling mill
DE3145526C2 (de) * 1981-11-17 1985-10-31 Sulzer-Escher Wyss AG, Zürich Walzgerüst
DE3362971D1 (en) * 1982-02-24 1986-05-22 Schloemann Siemag Ag Method and roll stand for rolling strip of different width
DE8223755U1 (de) * 1982-08-23 1982-11-18 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgerüst zum Auswalzen von Bandmaterial unterschiedlicher Breite
DE3624241C2 (de) * 1986-07-18 1996-07-11 Schloemann Siemag Ag Verfahren zum Betrieb eines Walzwerkes zur Herstellung eines Walzbandes
DE19719318C2 (de) * 1997-05-08 2003-06-12 Sms Demag Ag Verfahren zur Beeinflussung der Bandkontur im Kantenbereich eines Walzenbandes
DE10036564C2 (de) * 1999-08-03 2001-06-21 Achenbach Buschhuetten Gmbh Mehrwalzengerüst
DE10037004B4 (de) * 2000-07-29 2004-01-15 Sms Demag Ag Walzgerüst für bandkantenorientiertes Verschieben der Zwischenwalzen in einem 6-Walzen-Gerüst
DE102014226326B4 (de) * 2014-12-17 2017-06-08 Achenbach Buschhütten GmbH & Co. KG Walzgerüst mit Verschiebeeinrichtung
CN114248484A (zh) * 2021-12-23 2022-03-29 惠州市赢合科技有限公司 一种极片辊压机与极片辊压方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047883A (en) * 1935-09-03 1936-07-14 Charles W Phillips Rolling mill
US2279415A (en) * 1940-04-25 1942-04-14 Simons Aaron Method and apparatus for drawing strip
US2776586A (en) * 1948-06-10 1957-01-08 Armzen Company Construction and control of cold rolling mills
US3076360A (en) * 1958-08-22 1963-02-05 Sendzimir Tadeusz Clam shell cold rolling mill
US3334506A (en) * 1964-04-24 1967-08-08 Nat Steel Corp Rolling mill
US3628362A (en) * 1969-03-25 1971-12-21 Arnold Eng Co Mill for rolling a thin, flat product

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE411883C (de) * 1925-04-09 Richard Hein Lagerungsvorrichtung fuer Walzwerke
US2566679A (en) * 1943-02-25 1951-09-04 Armzen Company Rolling mill and lubrication method and means therefor
GB665186A (en) * 1949-06-09 1952-01-16 Samuel Fox And Company Ltd Improvements in rolling mills
DE957024C (de) * 1955-04-09 1957-01-31 Schloemann Ag Duo-Walzwerk mit anstellbarer Oberwalze und nicht anstellbarer Unterwalze, das gegenueber dem Kammwalzengeruest verschiebbar angeordnet ist und dessen Walzen durch Zahnkupplungen mit den zugehoerigen Kammwalzen getrieblich verbunden sind
US3024679A (en) * 1957-07-01 1962-03-13 Thomas A Fox Skin pass mills and methods of rolling
DE1767821U (de) * 1957-08-31 1958-06-04 Siemag Siegener Masch Bau Einrichtung zur aufnahme des axialschubes und zum anstellen der walzen eines walzgeruestes in richtung ihrer achsen.
DE1281981B (de) * 1958-08-25 1968-11-07 United Eng Foundry Co Walzgeruest mit Balligkeitsveraenderung der Walzen durch Ausbiegen der Walzenachse
BE634026A (https=) * 1962-06-26
GB1011003A (en) * 1962-07-20 1965-11-24 Canada Steel Co Improvements in or relating to a four-high rolling mill
GB1127014A (en) * 1964-10-08 1968-09-11 United Eng Foundry Co Correction of screw position for effect of roll bending of a rolling mill
US3391557A (en) * 1964-11-12 1968-07-09 Fox Ind Inc Gauge control rolling mills and methods of rolling
DE1452152B2 (de) * 1965-11-17 1973-01-04 Moeller & Neumann Gmbh, 6670 St. Ingbert Walzwerk zur Herstellung von Flachprodukten, insbesondere von Blechen und Bändern
GB1199203A (en) * 1966-11-30 1970-07-15 Nippon Kokan Kk Apparatus for Controlling the Shape of a Workpiece During Rolling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047883A (en) * 1935-09-03 1936-07-14 Charles W Phillips Rolling mill
US2279415A (en) * 1940-04-25 1942-04-14 Simons Aaron Method and apparatus for drawing strip
US2776586A (en) * 1948-06-10 1957-01-08 Armzen Company Construction and control of cold rolling mills
US3076360A (en) * 1958-08-22 1963-02-05 Sendzimir Tadeusz Clam shell cold rolling mill
US3334506A (en) * 1964-04-24 1967-08-08 Nat Steel Corp Rolling mill
US3628362A (en) * 1969-03-25 1971-12-21 Arnold Eng Co Mill for rolling a thin, flat product

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162627A (en) * 1972-07-17 1979-07-31 Hitachi, Ltd. Rolling mill
US3943742A (en) * 1973-08-24 1976-03-16 Hitachi, Ltd. Rolling mill
US4194382A (en) * 1976-11-26 1980-03-25 Hitachi, Ltd. Rolling mill
DE2919105A1 (de) * 1978-05-19 1979-11-22 Sendzimir Inc T Walzwerk
US4270377A (en) * 1978-05-19 1981-06-02 T. Sendzimir, Inc. Eighteen high rolling mill
US4311030A (en) * 1978-12-14 1982-01-19 Nippon Steel Corporation Method and apparatus for controlling temper-rolled profile of cold rolled steel strip after continuous annealing
US4320643A (en) * 1979-01-17 1982-03-23 Hitachi, Ltd. Method and apparatus for correcting asymmetrical condition in rolling mill
EP0026903A1 (en) * 1979-10-04 1981-04-15 Hitachi, Ltd. Rolling mill
JPS5666307A (en) * 1979-10-04 1981-06-04 Hitachi Ltd Rolling mill
US4369646A (en) * 1979-10-04 1983-01-25 Hitachi, Ltd. Rolling mill and method for rolling a sheet material
EP0043869A3 (en) * 1980-07-07 1982-04-28 Hitachi, Ltd. Roll for rolling mill
EP0067040A3 (en) * 1981-06-03 1983-06-15 Hitachi, Ltd. Rolling mill
US4491005A (en) * 1981-06-03 1985-01-01 Hitachi, Ltd. Rolling mill
US4499748A (en) * 1982-01-06 1985-02-19 Hitachi, Ltd. Rolling mill
DE3331055A1 (de) * 1983-08-29 1985-03-14 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschieblichen arbeitswalzen
EP0181474A3 (en) * 1984-10-13 1987-01-07 Sms Schloemann-Siemag Aktiengesellschaft Six-high roll stand
EP0226024A1 (de) * 1985-12-16 1987-06-24 Sms Schloemann-Siemag Aktiengesellschaft Vorrichtung zum axialen Verschieben von Arbeitswalzen
US4881396A (en) * 1987-04-09 1989-11-21 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill stand with axially slidable rolls
US5239851A (en) * 1989-05-31 1993-08-31 Hitachi, Ltd. Rolling method of multi-high rolling mill for obtaining accurate sheet crown
US5653137A (en) * 1989-05-31 1997-08-05 Hitachi, Ltd. Five-high rolling mill
EP1020238A4 (en) * 1997-09-04 2004-07-21 Hongzhuan Zheng ROLLING MILL WITH TWO-DIMENSIONALLY CONTROLLED ROLL BENDING
WO2007039187A1 (de) 2005-10-03 2007-04-12 Siemens Vai Metals Technologies Gmbh & Co Walzgerüst mit verschiebevorrichtung
US20080264134A1 (en) * 2005-10-03 2008-10-30 Rudolf Langeder Roll Stand Provided with a Displacement Device
RU2411093C2 (ru) * 2005-10-03 2011-02-10 Сименс Фаи Металз Текнолоджиз Гмбх Прокатная клеть с устройством перемещения
US8701456B2 (en) 2005-10-03 2014-04-22 Siemens Vai Metals Technologies Gmbh Roll stand provided with a displacement device
US8544308B2 (en) 2008-03-27 2013-10-01 Sms Siemag Ag Roll stand
US20110232350A1 (en) * 2008-03-27 2011-09-29 Hans-Georg Hartung Roll stand
CN103521530A (zh) * 2013-10-17 2014-01-22 浙江华达新型材料有限公司 板带轧机及板带边缘形状控制方法
CN103521530B (zh) * 2013-10-17 2015-08-05 浙江华达新型材料有限公司 板带轧机及板带边缘形状控制方法
WO2016058234A1 (zh) * 2014-10-14 2016-04-21 江苏甬金金属科技有限公司 一种二十辊中间辊推辊装置
CN109530440A (zh) * 2018-12-30 2019-03-29 衡阳市鑫诚和重型机械设备制造有限公司 异步非对称轧制轧机布局系统
US20220168790A1 (en) * 2019-04-04 2022-06-02 Sendzimir Japan, Ltd. Multistage rolling mill
US11872612B2 (en) * 2019-04-04 2024-01-16 Sendzimir Japan, Ltd. Multistage rolling mill

Also Published As

Publication number Publication date
DE2206912A1 (de) 1972-08-31
DE2206912B2 (de) 1979-03-29
FR2125363B1 (https=) 1974-08-02
FR2125363A1 (https=) 1972-09-29
GB1351074A (en) 1974-04-24
DE2206912C3 (de) 1984-04-19

Similar Documents

Publication Publication Date Title
US3818743A (en) Rolling mills
US3857268A (en) Rolling mill and rolling method
EP0094104B2 (en) Rolling mill and method for rolling a sheet material
US1824211A (en) Rolling mill
US3815401A (en) Housing construction for cluster type cold rolling mills
US2118284A (en) Apparatus for producing sheet material
US3373590A (en) Multi-roll stands for the cold-rolling of thin, hard strips
US2909088A (en) Mounting for backing rolls
US3318130A (en) Backed mill with readily exchangeable working rolls
US3657913A (en) Crown control
US3818742A (en) Rolling mills
US3871221A (en) Continuous strip rolling mill
US3190098A (en) Cantilever rolling mill
US3461704A (en) Cluster arrangement
US4162627A (en) Rolling mill
US4197731A (en) Rolling mill capable of increased torque transmission
US3718026A (en) Cluster mill with cantilevered rolls
US3765213A (en) Rolling mills
JP2708228B2 (ja) ５段圧延機
US4628718A (en) Method of rolling to impart triangular section
US3352140A (en) Rolling mill construction
US3323343A (en) Edging roll pairs
GB869276A (en) Improvements relating to rolling mills
US3922900A (en) Method of and apparatus for rolling unsymmetrical shape element having the flange
US3318131A (en) Multiple-roll rolling mill for exchangeable work rolls of substantially varying diameter