EP0506138B1 - Rolling mill, hot rolling system, rolling method and rolling mill revamping method - Google Patents

Rolling mill, hot rolling system, rolling method and rolling mill revamping method Download PDF

Info

Publication number
EP0506138B1
EP0506138B1 EP92105463A EP92105463A EP0506138B1 EP 0506138 B1 EP0506138 B1 EP 0506138B1 EP 92105463 A EP92105463 A EP 92105463A EP 92105463 A EP92105463 A EP 92105463A EP 0506138 B1 EP0506138 B1 EP 0506138B1
Authority
EP
European Patent Office
Prior art keywords
roll
work
rolls
rolling
work roll
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
EP92105463A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0506138A1 (en
Inventor
Toshiyuki Kajiwara
Tokuji Sugiyama
Yoshio Takakura
Takao Sakanaka
Yasutsugu Yoshimura
Ken-Ichi Yasuda
Shinichi Kaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0506138A1 publication Critical patent/EP0506138A1/en
Application granted granted Critical
Publication of EP0506138B1 publication Critical patent/EP0506138B1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating 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
    • B21B28/00—Maintaining rolls or rolling equipment in effective condition
    • B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
    • B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085—Joining ends of material to continuous strip, bar or sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/12—Rolling load or rolling pressure; roll force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07—Adaptation of roll neck bearings
    • 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
    • B21B31/185—Adjusting or positioning rolls by moving rolls axially and by crossing 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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks

Definitions

  • the invention relates to a four-high hot rolling mill which shows an excellent ability for controlling the crown of flat materials, a hot rolling system, a hot rolling method and a method for revamping hot rolling mills.
  • EP-A-0 184 481 there is described a further four-high rolling mill of this work roll crossing type comprising in a common housing a pair of back-up rolls arranged perpendicularly to the length axis of the flat rolled material and a pair of work rolls oppositely inclined in the horizontal planes, so that the axes of these work rolls cross each other and also the axis of the rolled material.
  • the small inclination angle of 0.2 to 2° between the work roll axis and the axis of the flat material can be controlled or adjusted by setting means in form of wedges or hydraulic cylinders disposed between the side surfaces of the work roll chocks and of the windows in the housing.
  • a very rigid beam may be provided to balance the driving side and the operating side of the rolling mill.
  • provision of such a rigid beam increases the overall size of the rolling mill.
  • the axial thrust force on the work rolls is generally 1 to 2 % of the rolling loads in the case of hot rolling.
  • the axial thrust exerted to the work rolls which cross each other is about 5 % of the rolling load.
  • a generally known possibility of reducing wear of the roll barrels is to reduce the friction between the respective pairs of roll surfaces by supplying a lubricant either directly to the material and/or to the barrel surfaces of the work or back-up rolls.
  • hot rolling oil (at a concentration of 1 % or less) has been used in the hot rolling for the purpose of reducing wear of the work rolls and rolling load and rolling power.
  • This hot rolling oil is characterized in that it can maintain its lubricating effect on a high-temperature material present in the roll bite of 700 °C or above, and contains a large amount of fatty oil, such as beef tallow.
  • a lubricating oil mainly composed of a mineral oil, which maybe a soluble oil containing an emulsifier, greatly degrades or looses the lubricating effect at high temperatures, and thus has no adverse effect on biting.
  • the US-A-3 208 253 describes a system for supplying a rolling lubricant and cooling water to the barrels of work and back-up rolls in an alternate sequence during the rolling operation.
  • the lubricant application is interrupted and a non-lubricating coolant, advantageously water, is supplied to the roll barrels.
  • a non-lubricating coolant advantageously water
  • the object of the invention is to provide a hot rolling method and a hot rolling mill for rolling flat materials by work roll crossing, wherein excessive axial thrust loads of the work rolls as well as high wear of the back-up roll barrels and of the further components are prevented.
  • An essential aspect of the invention is based on the discovery that owing to the inclination of only the two work rolls an effect for compensating the undesirable roll bending of the work rolls caused by the rolling force is achieved so that an effective flatness control of the material being rolled across the entire width thereof is possible already with small angles of inclination in the order of 1°.
  • the crossing of the work rolls only produces a first axial thrust force acting between the back-up roll and the associated work roll and a second axial thrust force acting between the material and the work roll.
  • the first and the second axial thrust forces are directed in opposite directions, so that the actual thrust load acting on one of the work roll bearings is the difference of the first and the second thrust force and is, therefore, smaller than the first axial thrust force.
  • the controlled introduction of the mineral-based lubricant into the contact portion between the respective work roll and the back-up roll reduces the coefficient of friction in this contact portion only, so that the first axial thrust force will be reduced also and the roll chocks of the work rolls and of the back-up rolls can be designed smaller according to the reduced amount of thrust loads.
  • the lubricant supply means should be provided for controlledly injecting suitable lubricant at the inlet side of the gap area between the work roll and the back-up roll along the entire length of the gap area.
  • lubricants according to the invention are used. Even if after passage through the contact portion between work roll and back-up roll some of the lubricant adheres to the surface of the hot work roll and burns, a corresponding amount of lubricant will adhere to the surface of the relatively cooler back-up roll, even if a coolant is transferred from the work roll to the back-up roll surface.
  • measures may be provided for preventing the coolant for the work rolls from reaching the respective roll surfaces of the back-up rolls. In certain cases lubricant supply may take place only during the actual rolling operation and be shut off in the periods between successive materials being rolled.
  • a cross type four high rolling mill includes upper and lower work rolls 7 and upper and lower back-up rolls 8 which support the work rolls.
  • Work roll chocks 16 are provided at the roll ends of each of the work rolls 7 so as to rotatably support the work roll 7.
  • Each of said work roll chocks 16 has two vertical side surfaces 16a and lateral projections 16b on its upper and lower end of said side surfaces.
  • a hydraulic cylinder means or jack 11 acts on each of said side surfaces 16a in the horizontal direction.
  • Said jacks 11 comprise a cylinder member 11a and a piston 10 having a piston head 10a and a spherical press portion 10b.
  • the cylinder member 11a is provided on its inner side with an enlarged end plate 11b which presses against the vertical side surfaces 16a of the work roll crocks 16.
  • Each of said cylinder means 11 is slidably disposed in a separate housing chamber 11c.
  • the cylinder means 11 of each work roll chock act against another symmetrical axis to its horizontal axis to avoid lateral moments and displacements. Further the contact-faces of said cylinder end plates 11b are large enough for uniformly transmitting a strong pressure force to the work roll chocks 16.
  • the cylinder means 11 are securely guided in the chambers 11c, so that they can compensate and withstand the transverse forces produced by vertical movements of the work rolls 8 and its roll chocks 16.
  • each of said work roll chocks 16 is provided on its outer end with two parallel axial projections 16c having outer transverse end portions 16d.
  • the two back-up rolls 8 of the rolling mill are rotatably supported by back-up roll chocks 17.
  • the rolling load will be transmitted through said roll chocks 17 to the back-up rolls 8.
  • members 18 in form of a pressing plate which are disposed in cutouts 20a of the housing 20.
  • Each pressing plate 18 acts at least on hydraulic jack 19 in the horizontal direction transvers to the length axis of the back-up roll 8.
  • the work roll chocks 16 and the back-up roll chocks 17 are disposed such that they oppose window surfaces 20a of a pair of stands 20 provided erect in spaced relation in the roll axial direction of the rolling mill. Rolling loads are exerted to the individual rolls by means of jacks (not shown) provided in an upper or lower portion of the housing 20 to roll a material to be rolled 9.
  • the hydraulic jacks 11 are provided on project blocks 30 of the housing 20 which oppose the two side surfaces of each of the work roll chocks 16 provided at the two ends of each of the upper and lower work rolls 7.
  • the upper and lower work rolls 7 can be made to cross each other by operating both of the hydraulic jacks 10 and 11, namely the hydraulic jacks 10 and 11 have pistons and cylinders.
  • the pistons of the jacks have piston heads disposed in engagement with the project blocks 30, while the cylinders of the jacks are engaged with the upper and lower work rolls chocks 16.
  • the hydraulic jacks 10 and 11 can be operated to move the cylinders of the jacks so that the upper and lower work roll chocks 16 are relatively moved to cross the upper and lower work rolls.
  • a hydraulic oil is supplied to the hydraulic jack 10 through a switch-over valve 14.
  • a sensor 13 detects a displacement of a rod 12 mounted on the ram.
  • the hydraulic jack 10 is driven by a work roll cross angle controller 40 which adjusts the switch-over valve 14 on the basis of a signal corresponding to the. rolling conditions.
  • the work roll cross angle controller 40 also performs feedback control of the hydraulic jack 10 using the signal from the sensor 13 to obtain a desired cross angle of the upper and lower work rolls 7.
  • the cross angle can be changed during rolling, i.e., under enormous rolling loads.
  • Fig. 3 illustrates the results of the experiments conducted to examine how the crown of the material being rolled changes by a change in the cross angle during rolling. It can be seen that a change in the cross angle from 0.5 degree to 0.9 degree can change a flat material to one having a concaved crown.
  • a hydraulic oil is supplied to the hydraulic jack 11 through a pressure reduction valve 15 so that the hydraulic jack 11 can press against the work roll chock 16 with a required force.
  • Two hydraulic cylinders 22 for driving the work roll along the axis thereof are provided on the stand 20 on the two sides of each of the work roll chocks 16 to move the work roll 7 in the axial direction thereof.
  • a hydraulic oil is sealed in the hydraulic cylinders 22 by means of a pilot check valve 31 so as to allow the position of the hydraulic cylinders 22 to be maintained.
  • the rods of the hydraulic cylinders 22 are coupled to a common movable block 21. Locking portions 21a provided detachably on the common movable block 21 engage with projecting portions 16d formed at the end portion of the work roll chock 16, by which the driving force of the hydraulic cylinders 22 are transmitted to the work roll chock 16 and the work roll 7 can thereby be moved in the axial direction thereof.
  • the operation of moving the work roll 7 in the axial direction is controlled according to the rolling conditions by a movement control device.
  • lubricant supply nozzles 1 are respectively disposed along the roll axes to supply a lubricant between the upper work roll 7 and the upper back-up roll 8 and between the lower work roll 7 and the lower back-up roll 8.
  • the position of the lubricant supply nozzle 1 is not limited to that illustrated in Figs. 1 and 2 but the nozzle 1 can be located at any position where it can supply a lubricant, which is a lubricating agent, to between the two rolls.
  • the nozzle 1 has a plurality of nozzle orifices disposed in a row extending in the axial direction of the rolls 7 and 8 so that these rolls can be uniformly supplied with the lubricant.
  • a hydraulic jack 19 is provided on the window surface 20a of the stand 20 which opposes the side surface of the back-up roll chock 17 provided at each of the roll ends of each of the upper and lower back-up rolls 8.
  • a pressing plate 18 for transmitting the driving force of the hydraulic jack 19 is slidably mounted on the stand 20. The hydraulic pressure of the hydraulic jack 19 is exerted to the back-up roll chock 17 through the pressing plate 18 so as to eliminate backlash of the upper or lower back-up roll 8.
  • This coefficient ⁇ Tm is a function of the cross angle ⁇ and other conditions, such as the draft. In general, the larger the draft, the lesser is this thrust coefficient ⁇ Tm .
  • the thrust generated between the back-up roll 8 and the work roll 7 differs depending on the rolling conditions.
  • three examples of such thrusts are given as curves ⁇ TR1 , ⁇ TR2 and ⁇ TR3 .
  • the curve of the thrust coefficients ⁇ TR1 indicates the results of the experiments in which only water was supplied between the back-up roll 8 and the work roll 7.
  • the curve ⁇ TR2 indicates the results of the experiments in which the concentration of the lubricating oil present in the water supplied to the two rolls was low.
  • a lubricant of the type which can be washed by the cooling water supplied from the roll cooling nozzles 2 and 3 is selected, the application of lubricant can be performed throughout the rolling. That is, when acceleration or deceleration is performed after the rolled material leaves the roll, lubricant supply is suspended, the work rolls are retracted to a position where the cross angle is 0, and then roll balancing force is increased. Because of crossing of only the work rolls 7, crossing resistance is less and crossing operation can be quickly performed during rotation of the rolls. Therefore, reduction of the cross angle to zero after the rolled material 9 has left the roll is desired.
  • the aforementioned work roll cross type four high rolling mill can be provided by revamping the existing four high rolling mill without providing a new stand by reusing the housing 20 of the existing rolling mill.
  • the existing four high rolling mill in which the pair of work rolls 7 and the pair of back-up rolls 8 for respectively supporting the work rolls 7 are provided on the rolling housing 20 will be revamped into the work roll cross type four high rolling mill in the manner described below: the hydraulic jacks 10 and 11, which are the hydraulic device that can be operated in the direction in which the material to be rolled 9 is fed, are provided at the positions on the rolling stand 20 which oppose the roll chocks 16 of the work rolls 7 so that the work rolls 7 can be inclined relative to the back-up rolls 8 on the horizontal plane in such a manner that the axes of the work rolls 7 cross the axes of the back-up rolls 8 and such that the axes of the work rolls 7 cross each other.
  • Fig. 16 shows a hot rolling system in which a joining device 63 is provided between rough rolling mills 61 and finish rolling mills 62 for sequentially joining the materials being rolled 9, and in which after the materials which have been rolled by the rough rolling mills 61 are joined to each other by the joining device 63, the joined materials are continuously rolled by the finish rolling mills 62.
  • At least one of the finish rolling mills 62 is constituted by the aforementioned rolling mill which includes the pair of work rolls 7 and the pair of back-up rolls 8 for respectively supporting the work rolls 7, in which the axes of the back-up rolls 8 are not inclined on the horizontal plane while the work rolls 7 can be inclined relative to the back-up rolls 8 on the horizontal plane such that the axes of the work rolls 7 cross the axes of the back-up rolls 8 and such that the work rolls 7 cross each other, in which the work rolls 7 are movable in the axial direction thereof, and in which the lubricant supply device 1 for supplying a lubricant between the work roll 7 and the back-up roll 8 is provided.
  • the work roll cross type rolling mill can be used as the finish rolling mill of the hot rolling system in which the materials rolled by the rough rolling mills are continuously rolled by the finish rolling mills.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
EP92105463A 1991-03-29 1992-03-30 Rolling mill, hot rolling system, rolling method and rolling mill revamping method Expired - Lifetime EP0506138B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP66007/91 1991-03-29
JP6600791 1991-03-29
JP20956/92 1992-02-06
JP4020956A JP3060691B2 (ja) 1991-03-29 1992-02-06 圧延機及び熱間圧延設備及び圧延方法及び圧延機の改造方法

Publications (2)

Publication Number Publication Date
EP0506138A1 EP0506138A1 (en) 1992-09-30
EP0506138B1 true EP0506138B1 (en) 1998-02-25

Family

ID=26357953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92105463A Expired - Lifetime EP0506138B1 (en) 1991-03-29 1992-03-30 Rolling mill, hot rolling system, rolling method and rolling mill revamping method

Country Status (6)

Country Link
EP (1) EP0506138B1 (ko)
JP (1) JP3060691B2 (ko)
KR (1) KR100222444B1 (ko)
CN (1) CN1038483C (ko)
BR (1) BR9201082A (ko)
DE (1) DE69224490T2 (ko)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5768927A (en) * 1991-03-29 1998-06-23 Hitachi Ltd. Rolling mill, hot rolling system, rolling method and rolling mill revamping method
US5524465A (en) * 1991-03-29 1996-06-11 Hitachi, Ltd. Work rolls crossing type mill, rolling system and rolling method
US5666837A (en) * 1991-03-29 1997-09-16 Hitachi Ltd. Rolling mill and method of using the same
JP2807379B2 (ja) * 1992-02-14 1998-10-08 株式会社日立製作所 タンデム圧延機及び作業ロールクロスミル
KR100254076B1 (ko) * 1992-10-02 2000-04-15 가나이 쓰도무 작업롤 교차식 압연기 및 압연 설비 및 압연 방법
DE69312223T2 (de) * 1992-11-10 1998-02-19 Mitsubishi Heavy Ind Ltd Verfahren zur Glanzbearbeitung von Blechoberflächen und Verfahren zum Kaltwalzen von metallischen Materialien
DE4447382C2 (de) * 1994-12-22 1999-08-12 Mannesmann Ag Walzgerüst zum Walzen von Blechen und Bändern
US5655398A (en) * 1995-05-11 1997-08-12 Danieli United, A Division Of Danieli Corporation Roll crossing and shifting system
IT1280192B1 (it) * 1995-06-26 1998-01-05 Danieli Off Mecc Dispositivo di traslazione assiale per cilindri di laminazione e procedimento di traslazione assiale con spostamento di incrocio dei
JP3215327B2 (ja) * 1995-07-10 2001-10-02 川崎製鉄株式会社 鋼帯の連続熱間仕上圧延方法
US6286354B1 (en) * 1996-04-03 2001-09-11 Hitachi, Ltd. Rolling mill and rolling method and rolling equipment
TW358758B (en) * 1996-12-27 1999-05-21 Hitachi Ltd Rolling mill and method of the same
DE19911638A1 (de) * 1999-03-16 2000-09-21 Sms Demag Ag Vorrichtung zur regelbaren Beeinflussung der Reibkräfte zwischen den Führungsflächen und Anlageflächen von, in den Ständerfenstern von Walzgerüsten geführten Lagereinbaustücken der Walzen
DE102004006130A1 (de) * 2003-12-23 2005-07-28 Sms Demag Ag Verfahren zum Schmieren von Walzgut
JP5929048B2 (ja) * 2011-09-01 2016-06-01 Ｊｆｅスチール株式会社 熱間圧延方法
PL234616B1 (pl) * 2018-04-09 2020-03-31 Lubelska Polt Urządzenie do rozdrabniania struktury z prowadnicami obrotowymi
CN109108092B (zh) * 2018-10-12 2024-03-15 一重集团大连工程技术有限公司 一种工作辊弯辊及横移装置
JP7342831B2 (ja) * 2020-09-29 2023-09-12 Ｊｆｅスチール株式会社 熱間圧延機及び熱延鋼板の製造方法
CN112496033B (zh) * 2020-11-10 2022-08-19 江阴市诚立新材料科技有限公司 一种热轧镀锌板的热轧设备及其热轧方法
EP4094857A1 (de) 2021-05-28 2022-11-30 Primetals Technologies Austria GmbH Stabilisierung der arbeits- und stützwalzen eines walzgerüsts während des warmwalzens eines walzguts zu einem band in dem walzgerüst
CN115415331B (zh) * 2022-10-10 2024-06-14 日照钢铁控股集团有限公司 一种热连轧机架出口带钢凸度分配方法、系统及计算终端

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208253A (en) * 1963-05-10 1965-09-28 United States Steel Corp Control of rolling mill lubricant
JPS5217515B2 (ko) * 1972-03-23 1977-05-16
JPS57137011A (en) * 1981-02-16 1982-08-24 Nippon Kokan Kk <Nkk> Processing method of mill roll
JPS57199501A (en) * 1981-06-02 1982-12-07 Kawasaki Steel Corp Hot oil-lubricated rolling method
JPS5939408A (ja) * 1982-08-25 1984-03-03 Nippon Steel Corp 圧延機のスラスト防止方法
FR2572961A1 (fr) * 1984-11-09 1986-05-16 Usinor Cage de laminoir perfectionnee
JPS61279305A (ja) * 1985-06-06 1986-12-10 Ishikawajima Harima Heavy Ind Co Ltd 圧延機
JPH0753284B2 (ja) * 1985-12-05 1995-06-07 石川島播磨重工業株式会社 熱間圧延設備
US4735116A (en) * 1986-05-06 1988-04-05 United Engineering Rolling Mills, Inc. Spreading rolling mill and associated method
JPH0618646B2 (ja) * 1986-05-12 1994-03-16 三菱重工業株式会社 ロ−ルクロス式圧延機
JP2616917B2 (ja) * 1987-01-24 1997-06-04 株式会社日立製作所 ロールシフト圧延機による圧延方法

Also Published As

Publication number Publication date
JPH0550110A (ja) 1993-03-02
DE69224490T2 (de) 1998-09-24
EP0506138A1 (en) 1992-09-30
CN1065417A (zh) 1992-10-21
KR100222444B1 (ko) 1999-10-01
BR9201082A (pt) 1992-11-24
KR920017732A (ko) 1992-10-21
DE69224490D1 (de) 1998-04-02
JP3060691B2 (ja) 2000-07-10
CN1038483C (zh) 1998-05-27

Similar Documents

Publication Publication Date Title
EP0506138B1 (en) Rolling mill, hot rolling system, rolling method and rolling mill revamping method
US5768927A (en) Rolling mill, hot rolling system, rolling method and rolling mill revamping method
US2776586A (en) Construction and control of cold rolling mills
US5524465A (en) Work rolls crossing type mill, rolling system and rolling method
US4531394A (en) Six-high rolling mills
EP0555882B1 (en) Tandem mill system and work roll crossing mill
US20070089470A1 (en) Roll stand with axially displaceable rolls
JP3283823B2 (ja) 板材圧延機
US4631948A (en) Roll stand with braced and offset working rolls
US5666837A (en) Rolling mill and method of using the same
EP0590682B1 (en) Work rolls crossing type mill and rolling system
EP0597169B1 (en) Method for shining metal sheet surfaces and method for cold-rolling metallic materials
JP3615813B2 (ja) 作業ロールクロス圧延機のロール間潤滑油供給システム
US4402207A (en) Zero clearance device for rolling mill apparatus
JP3097685B2 (ja) 圧延機及び熱間圧延設備及び圧延方法及び圧延機の改造方法
RU2126729C1 (ru) Стан для горячей прокатки, линия стана горячей прокатки, способ горячей прокатки и способ модернизации прокатного стана
CA1122042A (en) Work roll chock assembly for a rolling mill
EP1005925B1 (en) Method to reduce and eliminate vibrations in a rolling stand and relative device
KR100632768B1 (ko) 크로스롤 압연기 및 그것을 사용한 압연 방법
US4218907A (en) Rolling mill bearing assembly
JPH06190409A (ja) 作業ロールクロス式圧延機及び圧延設備並びに圧延方法
JP3249313B2 (ja) 圧延機及び圧延機の圧延方法並びに圧延機の使用方法
EP0110556A2 (en) Two high hot rolling mill process and narrow strip product
DE19758035A1 (de) Walzgerüst und Walzverfahren
JP2698195B2 (ja) 板圧延機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19920805

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19931014

APAB Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPE

APAD Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOS REFNE

APAB Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPE

APAB Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 69224490

Country of ref document: DE

Date of ref document: 19980402

ET Fr: translation filed
ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020228

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020301

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020328

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031127

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090128

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100330