WO1992005889A1 - Laminoir - Google Patents

Laminoir Download PDF

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Publication number
WO1992005889A1
WO1992005889A1 PCT/SE1991/000543 SE9100543W WO9205889A1 WO 1992005889 A1 WO1992005889 A1 WO 1992005889A1 SE 9100543 W SE9100543 W SE 9100543W WO 9205889 A1 WO9205889 A1 WO 9205889A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolls
rolling
hot
tension
rolling mill
Prior art date
Application number
PCT/SE1991/000543
Other languages
English (en)
Inventor
Gunnar Jonasson
Original Assignee
Gunnar Jonasson
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 Gunnar Jonasson filed Critical Gunnar Jonasson
Priority to EP91917597A priority Critical patent/EP0592430A1/fr
Publication of WO1992005889A1 publication Critical patent/WO1992005889A1/fr

Links

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
    • B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • 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
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/463—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 metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling

Definitions

  • the present invention relates to a rolling mill, such as a hot-rolling milling having at least two pairs of rolls.
  • the accompanying Figure 1 shows conventional hot rolling using at least one pair of rolls (1,2).
  • the rolled metal may be steel, copper, aluminium, etc. and rolling is performed in the direction indicated by the arrow.
  • the rolled metal which in the present case is hot, heats the rolls during the rolling procedure along sector 4. Since the rolls are otherwise cooler, and are also generally cooled at their free surfaces, considerable temperature differences occur in the rolls which may lead to deformation, cracks, etc. during cooling, for instance.
  • a high rolling speed (e.g. 2 m/s) is therefore aimed at during hot rolling, in order to avoid unnecessary heating.
  • a certain amount of heating also occurs during cold rolling and similar problems may occur.
  • Hot rolling is often desired directly following a continuous casting machine, e.g. as described in Swedish patent application No. 8903962-2, but it is difficult in this case to maintain high rolling speeds.
  • the speed must be reduced to that for cold rolling (e.g. 2 m/min) which with conventional hot rolling results in the drawbacks mentioned above.
  • the invention aims at a solution of these and other associated drawbacks and is characterized in that a continuous belt is placed around the upper and lower rolls, respectively, in the two or more pairs of rolls, the belts passing between rolls and rolled metal, the tension of said belts being adjustable and the belts being in contact with the rolled metal, said belt tension being adjustable by means of tension rolls, for instance, located in or beside the path of the belt.
  • the belts thus absorb heat primarily from the hot rolled metal and not to any great extent from the rolls, and the above-mentioned drawbacks in conventional rolling are thus avoided.
  • Figure 1 shows the state of the art (see above).
  • Figure 2 shows a hot-rolling mill having two pairs of rolls with a continuous belt 5 placed around each of the upper rolls (8,6).
  • the belt is tensioned by means of a suitable tension means, e.g. the tension rolls 9,9' shown in Figure 2.
  • the belts 5 for the upper rolls and 5' for the lower rolls are capable of absorbing tensile and compressive forces arising due to temperature differences and are not normally damaged. They are also easy to replace. Furthermore, the tension can easily be adjusted via the tension rolls 9,9'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

Laminoir à chaud, de préférence laminoir à chaud comportant au moins deux rouleaux. Des courroies continues sont tendues respectivement autour du rouleau supérieur et du rouleau inférieur. Lesdites courroies se déplacent en contact avec le métal laminé, entre le rouleau et le métal laminé et ont pour objectif d'absorber la chaleur. La tension des courroies peut être réglée par des rouleaux de tension, par exemple.
PCT/SE1991/000543 1990-09-28 1991-08-19 Laminoir WO1992005889A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP91917597A EP0592430A1 (fr) 1990-09-28 1991-08-19 Laminoir

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9003087-5 1990-09-28
SE9003087A SE467143B (sv) 1990-09-28 1990-09-28 Valsverk

Publications (1)

Publication Number Publication Date
WO1992005889A1 true WO1992005889A1 (fr) 1992-04-16

Family

ID=20380481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1991/000543 WO1992005889A1 (fr) 1990-09-28 1991-08-19 Laminoir

Country Status (3)

Country Link
EP (1) EP0592430A1 (fr)
SE (1) SE467143B (fr)
WO (1) WO1992005889A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748955A1 (fr) * 1996-05-24 1997-11-28 Lorraine Laminage Procede et dispositif d'impression d'une surface metallique dure, notamment de l'acier nu ou revetu

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320846A1 (fr) * 1987-12-18 1989-06-21 Hitachi, Ltd. Dispositif et procédé pour laminer à chaud des bandes à partir de brames

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320846A1 (fr) * 1987-12-18 1989-06-21 Hitachi, Ltd. Dispositif et procédé pour laminer à chaud des bandes à partir de brames

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748955A1 (fr) * 1996-05-24 1997-11-28 Lorraine Laminage Procede et dispositif d'impression d'une surface metallique dure, notamment de l'acier nu ou revetu
WO1997045213A1 (fr) * 1996-05-24 1997-12-04 Sollac Procede et dispositif d'impression d'une surface metallique dure, notamment de l'acier nu ou revetu

Also Published As

Publication number Publication date
SE9003087L (sv) 1992-03-29
SE467143B (sv) 1992-06-01
SE9003087D0 (sv) 1990-09-28
EP0592430A1 (fr) 1994-04-20

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