EP0839587A1 - Procédé pour laminer des tÔles fortes - Google Patents

Procédé pour laminer des tÔles fortes Download PDF

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Publication number
EP0839587A1
EP0839587A1 EP97118206A EP97118206A EP0839587A1 EP 0839587 A1 EP0839587 A1 EP 0839587A1 EP 97118206 A EP97118206 A EP 97118206A EP 97118206 A EP97118206 A EP 97118206A EP 0839587 A1 EP0839587 A1 EP 0839587A1
Authority
EP
European Patent Office
Prior art keywords
strip
rolling
stitch
head
pass
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
EP97118206A
Other languages
German (de)
English (en)
Other versions
EP0839587B1 (fr
Inventor
Stephan Krämer
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
Application filed by SMS Schloemann Siemag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0839587A1 publication Critical patent/EP0839587A1/fr
Application granted granted Critical
Publication of EP0839587B1 publication Critical patent/EP0839587B1/fr
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
    • 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
    • B21B1/222—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 rolling-drawing process; in a multi-pass mill
    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • 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
    • B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • 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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge
    • 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
    • B21B2265/00—Forming parameters
    • B21B2265/14—Reduction rate

Definitions

  • the invention is directed to a method for rolling heavy plates from a primary material in several successive work steps, with a different number "n" of passes in one or more rolling stands, preferably in a hot reversing stand, depending on the desired end product.
  • the object is achieved with the measures of the characterizing part of claim 1 in a method for rolling heavy plates from a primary material in several successive work steps, with a different number "n" of passes in one or more rolling stands, preferably depending on the desired end product in a hot reversing stand, in that from the stitch n - k to the stitch n - 1 (where k is a count number that is in the range from 1 to n - 1), higher stitch decreases (smaller sheet thicknesses) are rolled at the strip head than at the end of the strip .
  • the reduction in the number of passes from the strip head to the strip end - corresponding to the increase in the rolled sheet thickness from the strip head to the strip end - is constant, i. H. linear.
  • the control of the required sheet thickness is possible in a particularly simple manner with the aid of the control systems.
  • the difference in thickness between the strip head and the end of the strip is set according to the invention to a smaller amount with each subsequent pass, so that in accordance with the decrease in the average sheet thickness as a result of the rolling progress, the difference in thickness relative to sheet thickness remains approximately constant and, based on the sheet thickness, approximately is in the range of 1-5%.
  • the measure according to the invention of increasing the sheet thickness from the strip head to the end of the strip starts from a stitch n - k, where k is a count from 1 to n - 1.
  • the measure ends with the last stitch, in which the thickness difference from the previous stitch is equalized and a parallel band, the end product, is generated.
  • FIG. 1 shows the entire rolling process with a total of eleven passes in a coordinate system with the rolling forces (RF) in 1,000 kN as the ordinate and the rolling time (t) in seconds as the abscissa.
  • FIG. 2 shows the result of a rolling process according to the method of the invention under otherwise the same conditions as in the rolling process of FIG. 1.
  • the temperature-related difference in rolling force between the strip head and the strip end is significantly reduced by increasing the stitch decrease on the strip head.
  • This difference for the tenth stitch (10) is only 10,000 kN and for the last stitch (11) only 12,000 kN.
  • the rolling force differences are reduced by approx. 50%.
  • the maximum rolling force values for the last pass are also significantly lower than with the methods previously used, as the following comparison shows: Stitch no. k number maximum rolling force in kN previous author
  • the invention 7 4th 48,500 49,000 8th 3rd 55,000 55,500 9 2nd 71,000 65,000 10th 1 76,000 65,000 11 0 63,000 55,000
  • the strip in the last stitches, is rolled out with different thicknesses, specifically at the strip head with a smaller thickness, which then leads to the end of the strip increases linearly or non-linearly again according to a certain predetermined mathematical function, not only are the rolling force differences between the strip head and the strip end reduced, but also the maximum rolling forces per pass are reduced.
  • this also has a particularly favorable effect on the service life of the wearing parts of the rolling mill and on the rolling energy requirement.
  • the invention is not limited to the exemplary embodiment described in the drawing figures and also not applicable to rolling in reversing stands, but in general can also advantageously be used for rolling in multiple passes, which are carried out in succession, as well as for rolling in roughing and finishing lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP97118206A 1996-11-05 1997-10-21 Procédé pour laminer des tôles fortes Expired - Lifetime EP0839587B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645497 1996-11-05
DE19645497A DE19645497A1 (de) 1996-11-05 1996-11-05 Verfahren zum Walzen von Grobblechen

Publications (2)

Publication Number Publication Date
EP0839587A1 true EP0839587A1 (fr) 1998-05-06
EP0839587B1 EP0839587B1 (fr) 2001-12-05

Family

ID=7810655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97118206A Expired - Lifetime EP0839587B1 (fr) 1996-11-05 1997-10-21 Procédé pour laminer des tôles fortes

Country Status (12)

Country Link
US (1) US5943894A (fr)
EP (1) EP0839587B1 (fr)
JP (1) JP4263262B2 (fr)
KR (1) KR100517714B1 (fr)
AT (1) ATE209974T1 (fr)
CA (1) CA2220412C (fr)
DE (2) DE19645497A1 (fr)
ES (1) ES2169310T3 (fr)
ID (1) ID18570A (fr)
MY (1) MY123098A (fr)
RU (1) RU2203748C2 (fr)
TW (1) TW338728B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107377629A (zh) * 2017-06-28 2017-11-24 秦皇岛首秦金属材料有限公司 一种中厚板轧机精轧阶段规程的分配方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111576A (en) * 1965-10-04 1968-05-01 Algoma Steel Corp Ltd Process for gauge control in hot rolled sheet and strip
JPS5561311A (en) * 1978-10-31 1980-05-09 Kawasaki Steel Corp Method and apparatus for controlling sheet thickness
US4555922A (en) * 1984-07-13 1985-12-03 Tippins Machinery Company, Inc. Adaptive strip wedge control for reversing mill
US4860564A (en) * 1987-09-21 1989-08-29 United Engineering, Inc. Method and apparatus for taper rolling control for a rolling mill
SU1503902A1 (ru) * 1987-04-24 1989-08-30 Московский институт стали и сплавов Способ реверсивной прокатки слитков из малопластичных сталей и сплавов
GB2308083A (en) * 1995-12-11 1997-06-18 Encomech Eng Dev Ltd Hot rolling strip

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1059144A (fr) * 1952-06-05 1954-03-23 Suermondt & Dumont Dispositif permettant des déplacements égaux et simultanés des galets ou rouleaux d'entraînement de fils ou bandes métalliques
SU942840A1 (ru) * 1980-12-26 1982-07-15 Производственное объединение "Новокраматорский машиностроительный завод" Устройство дл автоматического регулировани межвалкового зазора при прокатке листа на клин
JPS6061106A (ja) * 1983-09-16 1985-04-08 Kawasaki Steel Corp 異厚鋼板の圧延方法
JPS60102208A (ja) * 1983-11-07 1985-06-06 Kawasaki Steel Corp 板の可逆圧延方法
JPS63144815A (ja) * 1986-12-09 1988-06-17 Kobe Steel Ltd リバ−ス圧延機による圧延方法
IT1224318B (it) * 1988-05-26 1990-10-04 Mannesmann Ag Processo ed impianto per la produzione continua di nastro di acciaio
JPH0399711A (ja) * 1989-09-13 1991-04-24 Kawasaki Steel Corp 反り防止圧延方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1111576A (en) * 1965-10-04 1968-05-01 Algoma Steel Corp Ltd Process for gauge control in hot rolled sheet and strip
JPS5561311A (en) * 1978-10-31 1980-05-09 Kawasaki Steel Corp Method and apparatus for controlling sheet thickness
US4555922A (en) * 1984-07-13 1985-12-03 Tippins Machinery Company, Inc. Adaptive strip wedge control for reversing mill
SU1503902A1 (ru) * 1987-04-24 1989-08-30 Московский институт стали и сплавов Способ реверсивной прокатки слитков из малопластичных сталей и сплавов
US4860564A (en) * 1987-09-21 1989-08-29 United Engineering, Inc. Method and apparatus for taper rolling control for a rolling mill
GB2308083A (en) * 1995-12-11 1997-06-18 Encomech Eng Dev Ltd Hot rolling strip

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Derwent World Patents Index; Class M21, AN 71-69205S, XP002056222 *
DATABASE WPI Section Ch Week 9025, Derwent World Patents Index; Class M21, AN 90-191258, XP002056221 *
PATENT ABSTRACTS OF JAPAN vol. 004, no. 102 (M - 022) 22 July 1980 (1980-07-22) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107377629A (zh) * 2017-06-28 2017-11-24 秦皇岛首秦金属材料有限公司 一种中厚板轧机精轧阶段规程的分配方法

Also Published As

Publication number Publication date
KR100517714B1 (ko) 2005-11-28
ATE209974T1 (de) 2001-12-15
EP0839587B1 (fr) 2001-12-05
DE19645497A1 (de) 1998-05-07
TW338728B (en) 1998-08-21
MX9708512A (es) 1998-05-31
CA2220412C (fr) 2008-03-18
MY123098A (en) 2006-05-31
DE59705654D1 (de) 2002-01-17
KR19980042089A (ko) 1998-08-17
US5943894A (en) 1999-08-31
ID18570A (id) 1998-04-23
ES2169310T3 (es) 2002-07-01
RU2203748C2 (ru) 2003-05-10
CA2220412A1 (fr) 1998-05-05
JPH10166003A (ja) 1998-06-23
JP4263262B2 (ja) 2009-05-13

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