EP0112969B2 - Verfahren zum Walzen von Metallbändern - Google Patents

Verfahren zum Walzen von Metallbändern Download PDF

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Publication number
EP0112969B2
EP0112969B2 EP83109368A EP83109368A EP0112969B2 EP 0112969 B2 EP0112969 B2 EP 0112969B2 EP 83109368 A EP83109368 A EP 83109368A EP 83109368 A EP83109368 A EP 83109368A EP 0112969 B2 EP0112969 B2 EP 0112969B2
Authority
EP
European Patent Office
Prior art keywords
rolls
roll
working rolls
working
workpiece
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
EP83109368A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0112969A2 (de
EP0112969B1 (de
EP0112969A3 (en
Inventor
Wilfried Bald
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.)
SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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=6179920&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0112969(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Priority to AT83109368T priority Critical patent/ATE38480T1/de
Publication of EP0112969A2 publication Critical patent/EP0112969A2/de
Publication of EP0112969A3 publication Critical patent/EP0112969A3/de
Publication of EP0112969B1 publication Critical patent/EP0112969B1/de
Application granted granted Critical
Publication of EP0112969B2 publication Critical patent/EP0112969B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • 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
    • B21B13/02—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

Definitions

  • the invention relates to a method for rolling metal strips starting point is DE ⁇ A ⁇ 2 260 256.
  • the object of the present invention is to provide a method for rolling metal strips which allows metal strips of the same width to be rolled continuously in a four-roll stand, the metal strips produced being to be as flat as possible and the service life of the work rolls being to be as long as possible .
  • a disadvantage here is the high effort required, which not only consists in increasing the space requirement, lengthening the stands and interposing two additional rollers with chocks and arranging corresponding guide and displacement devices, increased costs and increased idle times also result during operation, since now two more rolls have to be changed and then refurbished when changing the rolls.
  • the service life of the back-up rolls is increased slightly by the use of intermediate rolls, the wear on the work rolls increases, and it is disadvantageous that the intermediate rolls are also subject to relatively high wear.
  • the successive rolls of rolling stock of decreasing width are axially displaced from one another in such a way that the contact length of the rolls defined by the working rolls is shortened from time to time in accordance with the plate width of the rolling stock and this contact length is approximately equal to the plate width of the rolling stock.
  • the four-roll stand according to DE-C2-23 35 809 there is an opposite axial displacement of the support rolls on the edges of the rolling stock to adapt to the rolling of rolling stock with decreasing width.
  • the work rolls cannot be moved axially. The wear of the work rolls is uneven and reduces their service life.
  • DE-C-200 426 describes a rolling mill with two rolls which are axially displaceable in order to achieve uniform wear of the rolls and thus a longer service life when rolling metal strips.
  • the rollers are obviously dimensioned so strong that they cannot be subjected to a bending moment. There are also no back-up rolls. A correction of the flatness of the manufactured metal strips in the sense of the task set out above is excluded.
  • Fig. 1 a section through the stands 1 and 2 of a four-roll stand is shown, in the stand window 3 of which a cross member 4 is placed on the lower stand yokes, on each of which rests in the area of the stand slide 5 on which the chocks 6 of the lower support rolls 7 are supported.
  • the sliding surfaces of the chocks 8 of the lower work roll, over which the chocks 9 of the upper work roll 11 are provided, are located on the sliding surfaces of the chocks Position 12 for the upper support roller.
  • the carriage 5 carrying the chocks 6 of the lower support roller 7 are coupled to one another by a link and can be axially displaced by a push rod 13.
  • the axes of the work rolls are overlapped by couplings and driven by spindles; Push rods 14 and 15 continue to engage the chocks shown on the left, the chocks of the upper support roller 17 being displaceable by a push rod 16.
  • the sliding surfaces provided at the top of the chocks 12 of the upper support roller are supported on a cross member 18 placed transversely through the stand window 3, which in turn is supported against the upper yokes of the stands 1 and 2 via pressure medium cylinders provided as adjusting devices. If necessary, one of the crossbeams 4 or 18 can additionally be supported by pressure measuring elements or the like.
  • the starting position during rolling can correspond to that of a conventional four-roll stand, in which the work and back-up rolls are symmetrical to the central vertical plane of the stand. If such an arrangement essentially rolls rolled material of the same width, there is increased erosion of the work rolls in the area of the strip edges, as shown in an exaggerated manner in FIG. 3: In those surface areas of the work rolls 10, 11 in which the strip edges are predominantly during rolling zones 21 of increased erosion, the depth of which is decisive for changing the work rolls and reworking them. while in the zones 22 in between there is only a significantly lower erosion.
  • FIGS. 2 and 5 and 6. 2 schematically shows the positions of the rolls which they assume in a conventional four-roll stand. Since the effect of the work roll bending is only moderate due to the support of the work rolls over their entire length by the relatively stiff backup rolls, it is common to use cambered rolls to compensate for the roll deflection.
  • FIG. 5 shows the same roller arrangement in a working state which can be achieved with a four-roll stand designed according to FIG. 1: the lower support roll 7 and the lower work roll 10 are jointly shifted to the right against the vertical plane of symmetry of the stand until the bale ends of the two rolls are flush with the left edge of the strip, and accordingly the upper work roll 11 and the upper backup roll 17 are shifted to the left until their right bale ends are flush with the right side edge of the rolling stock 20.
  • the line loads when loading the rolls are the same as those of the six-roll stand, but the pressings are more favorable than with a corresponding six-roll stand because of the changed diameter pairings.
  • the effect of the work roll bending is also significantly improved compared to the arrangement according to FIG. 2, so that the rolls may not be cambered and cylinder rolls may be used.
  • the end position of the rollers according to the invention is shown.
  • the rollers running on one side of the rolling stock are not shifted in the same direction, and preferably by the same amounts, as in the applications shown in FIG. 5; however, according to FIG. 6, the rolls running on one side of the rolling stock are shifted in opposite directions so that one bale end of each of the work rolls is flush with one belt edge and the associated work rolls are each flush with the other belt edge.
  • there is extensive compensation of the roll gap so that the roll bending can be reduced. This enables the use of cylindrical rollers.
  • FIG. 1 shows that a scaffold designed according to FIG. 1 gives almost the same possibilities as are praised for the six-roll stand, it being possible to distribute the wear occurring during rolling by moving the work rolls and thus the wear caused by the roll change and refurbishment Reduce work roll related effort. Since such a shifting of the rolls, which can be designated as arbitrary with regard to the roll gap profile, has repercussions on the roll gap, it is necessary to compensate for these repercussions by means of the work roll bending.
  • FIG. 7a Usual overall deformations of a rolled strip, such as one shown in FIG. 7a, can be divided into essentially two categories.
  • a band-parabolic elevation is referred to as a band curvature, which can be mathematically represented essentially by square terms.
  • 7b shows an example of a positive band curvature in which the band center extends essentially parabolically over the plane containing the two upper band edges.
  • Odd mathematical terms result in a change in the upper cover surface of the rolled strip, referred to here as edge curvature, as is shown, for example, in FIG. 7c.
  • both usually occur simultaneously, as can be seen from FIG. 7a, which represents an additive superimposition of the curves according to FIGS.
  • strip curvatures are brought about by the prevailing roll gap profile, and, as shown in FIG. 7, they can be positive and protrude beyond the base plane of the rolled strip or they can recede behind the plane as negative values.
  • This representation is essential due to the knowledge that essentially uneven links or an edge bend are caused by work roll bends, which are identified by more than one, usually two, maxima, while strip curvatures or distortion forms similar to these are achieved by other means of influencing the roll gap. It is therefore possible, in the correction of the roll gap profile and thus the total curvature resulting on the rolling stock, to compensate for marginal curvature portions essentially by the bending forces acting on the workers, while different means can be used to compensate for the strip curvature extending over the entire range.
  • the displacement of the support rollers already offers correction options which can still be adjusted by using support rollers with a diameter that is not too large and bending devices assigned to them.
  • the relationships which are recognized as relatively simple there is the possibility of deviations determined from the profile shape by areas of different strip tension without deformation of the rolled strip having to occur. It has therefore proven to be useful to arrange a strip tension measuring device after the stand and to transmit the values obtained for different width ranges of the rolled strip to the control device which controls the roll stand, so that it can compensate for the tension differences.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Control Of Metal Rolling (AREA)
EP83109368A 1982-12-06 1983-09-21 Verfahren zum Walzen von Metallbändern Expired - Lifetime EP0112969B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83109368T ATE38480T1 (de) 1982-12-06 1983-09-21 Verfahren zum walzen von metallbaendern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3245090 1982-12-06
DE19823245090 DE3245090A1 (de) 1982-12-06 1982-12-06 Verfahren und einrichtung zum walzen von metallbaendern

Publications (4)

Publication Number Publication Date
EP0112969A2 EP0112969A2 (de) 1984-07-11
EP0112969A3 EP0112969A3 (en) 1984-09-26
EP0112969B1 EP0112969B1 (de) 1988-11-09
EP0112969B2 true EP0112969B2 (de) 1997-03-19

Family

ID=6179920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109368A Expired - Lifetime EP0112969B2 (de) 1982-12-06 1983-09-21 Verfahren zum Walzen von Metallbändern

Country Status (7)

Country Link
US (2) US4669296A (enrdf_load_stackoverflow)
EP (1) EP0112969B2 (enrdf_load_stackoverflow)
JP (1) JPS59110402A (enrdf_load_stackoverflow)
AT (1) ATE38480T1 (enrdf_load_stackoverflow)
DE (2) DE3245090A1 (enrdf_load_stackoverflow)
RU (1) RU1787052C (enrdf_load_stackoverflow)
UA (1) UA9902A (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325823A1 (de) * 1983-07-18 1985-01-31 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren arbeitswalzen
JPS6297711A (ja) * 1985-10-24 1987-05-07 Nippon Steel Corp 圧延におけるエツジドロツプ防止方法
EP0235769B1 (de) * 1986-03-03 1993-05-12 Sms Schloemann-Siemag Aktiengesellschaft Walzgerüst
JPH0749124B2 (ja) * 1986-03-20 1995-05-31 株式会社日立製作所 ロールシフト式圧延機
DE3624241C2 (de) * 1986-07-18 1996-07-11 Schloemann Siemag Ag Verfahren zum Betrieb eines Walzwerkes zur Herstellung eines Walzbandes
GB2202174B (en) * 1987-01-09 1991-07-03 Nippon Steel Corp Method for rolling metal sheets
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
FR2613641B1 (fr) * 1987-04-09 1990-12-14 Clecim Sa Procede et installation de laminage d'un produit sous forme de bande, plus specialement une tole metallique ou un feuillard
US4898014A (en) * 1988-12-23 1990-02-06 United Engineering, Inc. Roll shifting system for rolling mills
US5093974A (en) * 1990-04-12 1992-03-10 United Engineering Inc. Bendable sleeved roll
DE4331261C2 (de) * 1992-10-15 1995-04-20 Achenbach Buschhuetten Gmbh Walzgerüst
US5970771A (en) * 1998-07-10 1999-10-26 Danieli United Continuous spiral motion system for rolling mills
DE10156087B4 (de) * 2001-11-16 2005-06-02 Müller Weingarten AG Vorrichtung zur Bearbeitung eines Metallbandes mit unterschiedlichen Dicken
DE102004020131A1 (de) * 2003-12-19 2005-07-21 Sms Demag Ag Kombinierte Fahrweisen und Gerüsttypen in Kalttandemstraßen
DE102004020132A1 (de) 2003-12-23 2005-07-28 Sms Demag Ag Verfahren und Walzgerüst zur mehrfachen Profilbeeinflussung
CN114260316B (zh) * 2020-09-16 2024-04-05 宝山钢铁股份有限公司 森吉米尔轧机第二中间辊的从动辊
DE102021200391A1 (de) * 2021-01-18 2022-07-21 Sms Group Gmbh Walzgerüst mit variabler seitlicher Führungseinrichtung
CN113828640B (zh) * 2021-11-08 2025-01-24 广西钢铁集团有限公司 一种粗轧平辊在线移辊装置

Family Cites Families (24)

* 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
US2566679A (en) * 1943-02-25 1951-09-04 Armzen Company Rolling mill and lubrication method and means therefor
DE1573407B1 (de) * 1965-10-05 1970-09-03 Asea Ab Anordnung bei Bandwalzwerken zum Messen der Verteilung des Bandzuges ueber die Bandbreite
GB1299181A (en) * 1969-02-20 1972-12-06 George Ernest Evans Warder Improved rotary hydraulic machines
JPS517635B2 (enrdf_load_stackoverflow) * 1971-12-10 1976-03-09
JPS527425B2 (enrdf_load_stackoverflow) * 1972-07-07 1977-03-02
DE2335809C2 (de) * 1972-07-17 1981-10-15 Hitachi, Ltd., Tokyo Walzgerüst
US3943742A (en) * 1973-08-24 1976-03-16 Hitachi, Ltd. Rolling mill
JPS5946689B2 (ja) * 1974-07-24 1984-11-14 株式会社日立製作所 圧延方法
JPS52141458A (en) * 1976-05-21 1977-11-25 Hitachi Ltd Continuous hot rolling device
JPS5366849A (en) * 1976-11-26 1978-06-14 Hitachi Ltd Rolling machine
JPS6040928B2 (ja) * 1978-08-09 1985-09-13 株式会社日立製作所 圧延機
JPS5573403A (en) * 1978-11-28 1980-06-03 Nippon Steel Corp Rolling method for reducing local abrasion of roll
JPS6051921B2 (ja) * 1978-12-08 1985-11-16 川崎製鉄株式会社 形状制御圧延方法
JPS5577904A (en) * 1978-12-08 1980-06-12 Kawasaki Steel Corp Rolling method for shape control
JPS5938842B2 (ja) * 1979-07-03 1984-09-19 川崎製鉄株式会社 ホツトストリツプのハイスポツト防止圧延法
JPS5666307A (en) * 1979-10-04 1981-06-04 Hitachi Ltd Rolling mill
DE2946108C2 (de) * 1979-11-15 1985-02-14 Koch & Sterzel Gmbh & Co, 4300 Essen Strahlendetektor
SE446952B (sv) * 1980-04-25 1986-10-20 Asea Ab Regleranordning vid band- eller platvalsverk
JPS56163006A (en) * 1980-05-19 1981-12-15 Nhk Spring Co Ltd Driving method for rolling roll for flat spring
DE3038865C1 (de) * 1980-10-15 1982-12-23 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest mit axial verschiebbaren Walzen
DE3107693A1 (de) * 1981-02-28 1982-09-16 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest
DE3122128A1 (de) * 1981-06-04 1982-12-23 SMS Schloemann-Siemag AG, 4000 Düsseldorf Walzgeruest
JPS57181708A (en) * 1981-05-01 1982-11-09 Kawasaki Steel Corp Controlling method of crown of strip

Also Published As

Publication number Publication date
EP0112969A2 (de) 1984-07-11
ATE38480T1 (de) 1988-11-15
RU1787052C (ru) 1993-01-07
US4711116A (en) 1987-12-08
DE3378403D1 (en) 1988-12-15
DE3245090A1 (de) 1984-06-07
US4669296A (en) 1987-06-02
UA9902A (uk) 1996-09-30
EP0112969B1 (de) 1988-11-09
JPS59110402A (ja) 1984-06-26
JPH0361522B2 (enrdf_load_stackoverflow) 1991-09-20
EP0112969A3 (en) 1984-09-26

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