EP0153849A2 - Procédé de laminage à chaud - Google Patents

Procédé de laminage à chaud Download PDF

Info

Publication number
EP0153849A2
EP0153849A2 EP85301178A EP85301178A EP0153849A2 EP 0153849 A2 EP0153849 A2 EP 0153849A2 EP 85301178 A EP85301178 A EP 85301178A EP 85301178 A EP85301178 A EP 85301178A EP 0153849 A2 EP0153849 A2 EP 0153849A2
Authority
EP
European Patent Office
Prior art keywords
work rolls
rolled
strips
crown
hot rolling
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.)
Granted
Application number
EP85301178A
Other languages
German (de)
English (en)
Other versions
EP0153849A3 (en
EP0153849B1 (fr
Inventor
Itaru Hishinuma
Akio Adachi
Ko Toyoshima
Yoji Utashiro
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27460423&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0153849(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP59037478A external-priority patent/JPS6114002A/ja
Priority claimed from JP59107553A external-priority patent/JPS60250806A/ja
Priority claimed from JP59204147A external-priority patent/JPS6182907A/ja
Priority claimed from JP59211503A external-priority patent/JPS6192702A/ja
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of EP0153849A2 publication Critical patent/EP0153849A2/fr
Publication of EP0153849A3 publication Critical patent/EP0153849A3/en
Application granted granted Critical
Publication of EP0153849B1 publication Critical patent/EP0153849B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/42—Control of flatness or profile during rolling of strip, sheets or plates using a combination of roll bending and axial shifting of the rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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
    • B21B1/28—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 cold-rolling, e.g. Steckel cold mill
    • 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
    • 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
    • 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
    • B21B2269/14—Work rolls

Definitions

  • This invention relates to a hot rolling method for avoiding edge built-up and edge drop of rolled strips or plates by preventing local wears of work rolls of rolling mills such as four or six high mills simultaneously controlling shapes of steel strips or plates by crown-controlling.
  • the rolled strip 3 has a sectional profile including at its edges irregular protrusions or ridges p and p' which are referred to as "edge built-up" as shown in Fig. 2. It is clearly evident that such an edge built-up causes the greatest difficulty for crown-controlling of strips and roll-chance-free rolling which is a rolling with a pair of work rolls over a wide range of sizes of strips or plates to be rolled without changing the rolls. The same holds true in the above crown-controlling by the use of the taper end rolls.
  • the hot rolling method using a hot finishing mill including a pair of work rolls each having a taper ground end at one end of its barrel and arranged one above the other with the taper ground ends being on opposite sides so as to locate both edges of a plate-like material to be rolled in respective zones of said taper ground ends according to the invention
  • the work rolls ⁇ are shifted in their axial directions within a range so as not to permit said both edges of the material to come out of said taper ground ends of the work rolls, thereby preventing edge built-ups of the material and simultaneously effecting crown-controlling of the rolled material.
  • the work rolls are cyclically shifted.
  • the range for shifting the work rolls is between the maximum where shapes of the material on an exit side of the work rolls do not exceed a limit value and the minimum where crown-controlling performance of the work rolls for the material is still maintained.
  • the work rolls are finely shifted and simultaneously a bending action is applied to the work rolls in a manner to eliminate a bending action acting upon the work rolls caused by the material being rolled by the work rolls.
  • the work rolls are cyclically shifted, while a distance from an edge of the material to a starting point of the taper ground end of the work roll nearliest to the edge of the material is variably set so as to decrease dependently upon increase of thermal expansion of the work rolls.
  • stepwise variation in shifting distance of the work rolls per unit number of rolled material is varied in a rolling cycle.
  • the stepwise variation is made smaller in a first half of the rolling cycle and is made larger in a latter half of the cycle.
  • the inventors further investigated the effective E L value to achieve this hot rolling method capable of preventing the edge built-up of rolled strips or plates so as to enable the crown-controlling and roll-chance-free rollinng to be effected.
  • Fig. 4 illustrates a shiftedmost position of work rolls when the E L value shown in Fig. 3 is increased to its maximum but not exceeding a limit value of a shape of strips on an exit side of the rolls.
  • Fig. 5 shows a shiftedleast position of work rolls when the E L value is decreased to its minimum but still maintaining their crown-controlling performance.
  • a reference numeral 5 denotes back up rolls.
  • a local wear 2b" in a track or trace 2 1 for strips can be equalized or mitigated in an axial direction of the work roll even after the number of rolled strips has increased as shown in Fig. 7, instead of a deep local wear 2b' in case of a constant E L value as shown in Fig. 6.
  • Figs. 8a, 8b and 8c illustrate one example of variation in sectional profile of strips on exit sides having thicknesses of 2.0 mm and widths of 1,040 mm according to Japanese Industrial Standards (JIS) SPHC continuously rolled by the taper end roll rolling method with a constant E L of 200 mm.
  • JIS Japanese Industrial Standards
  • the profiles were not largely varied when a tenth strip had been rolled.
  • remarkable edge built-ups p and p' occurred to the maximum heights of as much as 20 p which made it impossible 'to continue the rolling of strips having the same width.
  • Figs. 9a-9d illustrate the variation in sectional profile of strips similar to those of Figs. 8a-8c continuously rolled with work rolls being cyclically shifted by 20 mm per two strips with the E L values of 200-100 mm according to the invention. Even after forty-six strips having the same width had been rolled, any perceptible edge built-ups were not recognized.
  • the hot rolling method according to the invention can equalize or mitigate local wears in tracks or traces in work rolls for strips having the same width, to effectively maintain the sufficient crown-controlling or effect for preventing edge drops, thereby simultaneously making compatible the roll-chance-free rolling and crown-controlling for the strips.
  • Fig. lla illustrates work rolls 1 1 positioned at the maximum E L value but not exceeding a limit value of a shape of strips on an exit side of the work rolls.
  • an increasing bending action is applied to the work rolls as shown by a reference numeral 6 in Fig. llb compatible with the reduced value of the E L*
  • Fig. 11b illustrates the work rolls 1' positioned at the minimum E L value but still maintaining their crown-controlling performance, in which position the work rolls are subjected to the maximum bending action.
  • the bending action is applied to the work rolls in such a manner to eliminate or cancel a bending action acting upon the work rolls caused by the strip being rolled by the work rolls.
  • One preferred method of applying such a bending action to the work rolls is to apply loads to both journals of the work rolls in transverse directions substantially perpendicular to axes of the work rolls.
  • the crowns are substantially constant for successive rolled strips.
  • this embodiment is very advantageous to effect the crown-controlling of strips for making crowns of the strips substantially constant and simultaneously the roll-chance-free rolling or rolling strips of wide range of widths without changing work rolls.
  • Fig. 12 illustrates sectional profiles of successive strips (JIS) SPHC having thicknesses of 2.0 mm and widths of 1,040 mm with the constant E L value of 200 mm according to the prior art.
  • JIS successive strips
  • a twentyth strip included remarkable edge built-ups 5' having a height of 20 p. It was clearly impossible to continue further rolling with the same width strips.
  • Fig. 13 illustrates sectional profiles of strips (JIS) SPHC having thicknesses of 2.0 mm and widths of 1,040 mm rolled with the E L value of 100-200 mm. Work rolls were finely cyclically shifted so as to reduce the E L value by 20 mm per two rolled strips without applying any bending action on the work rolls. After fifty strips having the same widths had been rolled, any edge built-up did not occur. However, crowns varied greatly to be larger than those in Fig. 12.
  • Fig. 14 illustrates sectional profiles of strips (JIS) SPHC having thicknesses of 2.0 mm and widths of 1,040 mm rolled with the E L value of 100-200 mm. Work rolls were finely shifted so as to reduce the E L value by 20 mm per two rolled strips and were subjected to the increasing bending action of 0 to 200 ton/one chock as the E L value decreased.
  • JIS strips
  • Fig. 14 illustrates sectional profiles of strips (JIS) SPHC having thicknesses of 2.0 mm and widths of 1,040 mm rolled with the E L value of 100-200 mm. Work rolls were finely shifted so as to reduce the E L value by 20 mm per two rolled strips and were subjected to the increasing bending action of 0 to 200 ton/one chock as the E L value decreased.
  • This preferred embodiment of the invention can effectively suppress the edge built-up on rolled strips or plates without detrimentally affecting crowns of the strips so as to eliminate the disadvantages in the roll-chance-free rolling, whereby the hot rolling method with high accuracy as to thickness is accomplished.
  • the upper limit of the E L value is determined at a value corresponding to the limit value causing to the above mentioned waves in the center zones of the rolled strips and the E L value is successively reduced dependingly upon the thermal expansion of the work rolls to determine an effective variable E L value as shown in a line l in Fig. 16.
  • Thermal expansions of the work rolls corresponding to numbers of rolled strips are preferably measured with actual rolling conditions to previously determine the data of the thermal expansions, on the basis of which the E L values of the rolls are previously determined.
  • the thermal expansions may be experimentally determined with the aid of theoretical equations in the thermodynamics.
  • variable E L value shown in a broken line 1 is slightly shifted, as shown in a curve P in Fig. 17 so as to equalize or mitigate the wear of work rolls to achieve the decrease of crown and the stability of rolled strips.
  • the upper limit value of the E L value is determined with the aid of the pattern or curve P shown in Fig. 17.
  • the profiles of rolled strips are not detrimentally affected by the thermal expansion of the rolls, and the irregular wears in the rolls are equalized or mitigated as a rolling cycle proceeds.
  • the irregular wears would otherwise occur in tracks of the rolls for strips as shown in Figs. 18a and 18b. This effect is particularly remarkable in the case of rolling in order of wider strips to narrower strips.
  • Figs. 19 and 20a and 20b illustrate results of the rolling according to the invention wherein strips of (JIS) SPHC having thicknesses of 2.0-2.6 mm and widths of 750-950 mm are rolled with E L values 100-300 mm decreasing depending upon thermal expansion of rolls by means of six roll stands of a finishing mill, among which three stands F3, F4 and F5 include taper end rolls.
  • the work rolls were finely shifted by 20 mm per two rolled strips.
  • Fig. 19 shows the E L values set in the cycle and crowns p of the rolled strips.
  • the plotted crowns are thicknesses at centers of the rolled strips minus thicknesses at locations 25 mm inwardly spaced from edges of the strips.
  • the crowns of the rolled strips were reduced to 35 p on an average.
  • profiles of the rolled strips became stable as shown in Fig. 20a to prevent defective profiles due to irregular wear of rolls as shown in Fig. 20b.
  • thermal crown of rolls or the crown of rolls due to their thermal expansion which would detrimentally affects the crown of rolled strips. It has been known that the variation in crown of rolls depends not only upon periods of rolling allowed by one pairs of work rolls, actual rolling time, water-cooling conditions and others, but also kinds of steel to be rolled, sizes of strips to be rolled and the like. Moreover, it is known that the behavior of increasing the crown is different from each other in former and latter halves of the rolling cycle.
  • the inventors intended to reduce the crown of rolled strips with the aid of variation in shift pitch in rolling cycles.
  • Fig. 21 illustrates the shifting of work rolls 1 1 relative to a center 0 of a track of strips or plates.
  • the "shifting distance" of rolls is defined by a distance x from the center 0 of the track of strips to centers of barrels of the work rolls on both drive and operation sides.
  • the shifting distance x of rolls is stepwise increased per a predetermined number of rolled strips until the shifting distance x becomes the maximum, for example, 100 mm and thereafter is stepwise decreased per the predetermined number of the strips.
  • a "shift pitch" is defined by stepwise increase or decrease of shifting distance of rolls per unit number of rolled strips or plates in the repetition of the above shifting operations or cyclic roll shifting.
  • the roll shifting operation is simultaneously applied to three roll stands F3, F4 and F5 of a finishing mill having six roll stands with constant shift pitches 20 mm/2 coil, 40 mm/2 coil and 60 mm/2 coil in cyclic system as shown in Fig. 22.
  • Fig. 23 illustrates results of the rolling.
  • the shift pitch should be set at a small value so as to enlarge the thermal crown in the area corresponding to the width of strips, thereby mitigating the crown of rolled strips.
  • the profile of the thermal crown varies usually as shown in Fig. 24.
  • the thermal crown or difference in roll diameter at centers and edges of the strips depends upon the number of rolled strips or coils. This relation is shown in Fig. 25 wherein the rolling is effected with the constant shift pitch 40 mm/2 coil according to the procedure in connection with Fig. 22.
  • the shift pitch is made smaller to enlarge the difference AS in the first half of the cycle generally exhibiting small differences AS, and the shift pitch is made larger to suppress the difference AS to a small value in the latter half of the cycle, thereby stabilizing the difference AS throughout the rolling cycle.
  • Fig. 26 illustrates the difference ⁇ S dependent upon the variable shift pitch shown in a solid line and the constant shift pitch in a broken line.
  • the difference AS is stabilized as shown in the solid line in Fig. 26, the crown of rolled strips can be mitigated and irregularities in crown of the rolled strips can be reduced throughout the cycle only by providing work rolls with initial curves.
  • the crown of rolled strip can be effectively reduced.
  • the crown of rolls becomes larger in an earlier period in the initial half of rolling so as to reduce the crown of rolled strips, and becomes constant in the latter half of rolling so as not to produce defective rolled strips and to reduce the crown of the rolled strips.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
EP85301178A 1984-02-29 1985-02-22 Procédé de laminage à chaud Expired - Lifetime EP0153849B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP59037478A JPS6114002A (ja) 1984-02-29 1984-02-29 熱間圧延方法
JP37478/84 1984-02-29
JP107553/84 1984-05-29
JP59107553A JPS60250806A (ja) 1984-05-29 1984-05-29 熱間圧延法
JP204147/84 1984-10-01
JP59204147A JPS6182907A (ja) 1984-10-01 1984-10-01 熱間圧延方法
JP59211503A JPS6192702A (ja) 1984-10-11 1984-10-11 熱間圧延方法
JP211503/84 1984-10-11

Publications (3)

Publication Number Publication Date
EP0153849A2 true EP0153849A2 (fr) 1985-09-04
EP0153849A3 EP0153849A3 (en) 1986-02-12
EP0153849B1 EP0153849B1 (fr) 1992-01-15

Family

ID=27460423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85301178A Expired - Lifetime EP0153849B1 (fr) 1984-02-29 1985-02-22 Procédé de laminage à chaud

Country Status (6)

Country Link
EP (1) EP0153849B1 (fr)
KR (1) KR900009128B1 (fr)
AU (1) AU566417B2 (fr)
BR (1) BR8500894A (fr)
CA (1) CA1261654A (fr)
DE (1) DE3585164D1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249801A1 (fr) * 1986-06-16 1987-12-23 Sms Schloemann-Siemag Aktiengesellschaft Laminoir pour la fabrication d'un feuillard de laminage
DE3638331A1 (de) * 1986-11-10 1988-05-19 Schloemann Siemag Ag Walzgeruest zum walzen von flachmaterial mit einem paar von axial verschiebbaren arbeitswalzen
GB2198981A (en) * 1986-12-23 1988-06-29 Davy Mckee Axially-adjustable rolls
EP0276743A1 (fr) * 1987-01-24 1988-08-03 Hitachi, Ltd. Procédé de laminage à cylindres de travail déplaçables axialement
GB2202174A (en) * 1987-01-09 1988-09-21 Nippon Steel Corp Method for rolling metal sheets
EP0235769A3 (en) * 1986-03-03 1989-04-12 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill stand
GB2223435A (en) * 1988-09-27 1990-04-11 Davy Mckee Rolling metal strip
DE4105079A1 (de) * 1990-03-26 1991-10-02 Schloemann Siemag Ag Schleifvorrichtung zum nachschleifen von walzen eines walzgeruestes waehrend des walzens
EP0618020A1 (fr) * 1993-03-29 1994-10-05 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer d'un feuillard
JP2019522567A (ja) * 2016-06-15 2019-08-15 アルヴェディ・スティール・エンジニアリング・エッセ・ピ・ア Ｅｓｐ生産ラインのためのロングキロメートルで圧延することができる圧延機ロール

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3747786B2 (ja) † 2001-02-05 2006-02-22 株式会社日立製作所 板材用圧延機の圧延方法及び板材用圧延設備
US11919059B2 (en) 2019-01-28 2024-03-05 Primetals Technologies Germany Gmbh Changing the effective contour of a running surface of a working roll during hot rolling of rolling stock in a roll stand to form a rolled strip

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200426C (fr) *
JPS517635B2 (fr) * 1971-12-10 1976-03-09
JPS5581009A (en) * 1978-12-14 1980-06-18 Nippon Steel Corp Skin-pass rolling shape control method of cold rolled hoop after continuous annealing and equipment thereof
DE3038865C1 (de) * 1980-10-15 1982-12-23 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren Walzen

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0235769A3 (en) * 1986-03-03 1989-04-12 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill stand
US4955221A (en) * 1986-06-16 1990-09-11 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill for making a rolled product, especially rolled strip
EP0249801A1 (fr) * 1986-06-16 1987-12-23 Sms Schloemann-Siemag Aktiengesellschaft Laminoir pour la fabrication d'un feuillard de laminage
US4800742A (en) * 1986-06-16 1989-01-31 Sms Schloemann-Siemay Aktiengesellschaft Rolling mill for making a rolled product, especially rolled strip
DE3638331A1 (de) * 1986-11-10 1988-05-19 Schloemann Siemag Ag Walzgeruest zum walzen von flachmaterial mit einem paar von axial verschiebbaren arbeitswalzen
GB2198981A (en) * 1986-12-23 1988-06-29 Davy Mckee Axially-adjustable rolls
GB2198981B (en) * 1986-12-23 1990-09-12 Davy Mckee The rolling of metal strip
GB2202174B (en) * 1987-01-09 1991-07-03 Nippon Steel Corp Method for rolling metal sheets
GB2202174A (en) * 1987-01-09 1988-09-21 Nippon Steel Corp Method for rolling metal sheets
US4864836A (en) * 1987-01-24 1989-09-12 Hitachi, Ltd. Rolling method making use of work roll shift rolling mill
EP0276743A1 (fr) * 1987-01-24 1988-08-03 Hitachi, Ltd. Procédé de laminage à cylindres de travail déplaçables axialement
GB2223435A (en) * 1988-09-27 1990-04-11 Davy Mckee Rolling metal strip
DE4105079A1 (de) * 1990-03-26 1991-10-02 Schloemann Siemag Ag Schleifvorrichtung zum nachschleifen von walzen eines walzgeruestes waehrend des walzens
EP0618020A1 (fr) * 1993-03-29 1994-10-05 Sms Schloemann-Siemag Aktiengesellschaft Procédé et dispositif pour laminer d'un feuillard
JP2019522567A (ja) * 2016-06-15 2019-08-15 アルヴェディ・スティール・エンジニアリング・エッセ・ピ・ア Ｅｓｐ生産ラインのためのロングキロメートルで圧延することができる圧延機ロール

Also Published As

Publication number Publication date
EP0153849A3 (en) 1986-02-12
KR900009128B1 (ko) 1990-12-22
CA1261654A (fr) 1989-09-26
EP0153849B1 (fr) 1992-01-15
AU3911085A (en) 1985-09-05
DE3585164D1 (de) 1992-02-27
AU566417B2 (en) 1987-10-22
BR8500894A (pt) 1985-10-22
KR850007092A (ko) 1985-10-30

Similar Documents

Publication Publication Date Title
EP0153849A2 (fr) Procédé de laminage à chaud
EP0188113B2 (fr) Procédé de contrÔle de section de feuilles de tÔle et laminoir
RU2127652C1 (ru) Изложница для непрерывной отливки тонких листовых заготовок
JPS6051921B2 (ja) 形状制御圧延方法
US4823585A (en) Hot rolling method
US4528830A (en) Method for changing widthwise distribution of thickness of metal strip
EP0024849A1 (fr) Opération d'un laminoir à plusieurs cages
US4876874A (en) Method of hot rolling steel strip with deformed sections
EP0543014B1 (fr) Laminoir a six etages
JPH0521653B2 (fr)
RU2043797C1 (ru) Опорный валок листопрокатного стана
JPS636282B2 (fr)
JPH0556201B2 (fr)
US4295354A (en) Method for producing beam blank for large size H-beam from flat slab
JP2003285112A (ja) チタン板の冷間圧延方法
SU1652007A1 (ru) Способ прокатки полос на широкополосном стане
SU984516A1 (ru) Способ получени подката дл чистовой клети листового стана
CN115069774B (zh) 生产扁平轧制产品的方法和设备
JP7167002B2 (ja) 圧延方法
JPS62279038A (ja) エンボス金属帯の製造方法
JP2851990B2 (ja) 熱間仕上圧延方法
SU1388126A1 (ru) Рабочий валок чистовой клети непрерывного листового стана гор чей прокатки
SU1371726A1 (ru) Валок прокатной клети
SU799846A1 (ru) Прокатный валок
SU1616728A1 (ru) Способ гор чей прокатки на широкополосном стане

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

AK Designated contracting states

Designated state(s): BE DE FR GB LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR GB LU NL SE

17P Request for examination filed

Effective date: 19860630

17Q First examination report despatched

Effective date: 19880129

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB LU NL SE

REF Corresponds to:

Ref document number: 3585164

Country of ref document: DE

Date of ref document: 19920227

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: MANNESMANN AG

Effective date: 19921014

Opponent name: SMS SCHLOEMANN-SIEMAG AG

Effective date: 19921014

NLR1 Nl: opposition has been filed with the epo

Opponent name: MANNESMANN AG

Opponent name: SMS SCHLOEMANN-SIEMAG AG

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 85301178.1

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19961029

NLR2 Nl: decision of opposition
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: SE

Payment date: 20040204

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20040205

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20040210

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20040218

Year of fee payment: 20

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

Ref country code: LU

Payment date: 20040227

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20040304

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20040506

Year of fee payment: 20

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 EXPIRATION OF PROTECTION

Effective date: 20050221

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20050222

Ref country code: LU

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20050222

BE20 Be: patent expired

Owner name: *KAWASAKI STEEL CORP.

Effective date: 20050222

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

EUG Se: european patent has lapsed
NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20050222

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

BE20 Be: patent expired

Owner name: *KAWASAKI STEEL CORP.

Effective date: 20050222

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO