EP0159796A1 - Procédé de réglage du cintrage de cylindres - Google Patents

Procédé de réglage du cintrage de cylindres Download PDF

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Publication number
EP0159796A1
EP0159796A1 EP85301812A EP85301812A EP0159796A1 EP 0159796 A1 EP0159796 A1 EP 0159796A1 EP 85301812 A EP85301812 A EP 85301812A EP 85301812 A EP85301812 A EP 85301812A EP 0159796 A1 EP0159796 A1 EP 0159796A1
Authority
EP
European Patent Office
Prior art keywords
workrolls
rolling
workroll
generally
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.)
Withdrawn
Application number
EP85301812A
Other languages
German (de)
English (en)
Inventor
Paul Theodore Lovejoy
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.)
Allegheny Ludlum Steel Corp
Original Assignee
Allegheny Ludlum 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
Application filed by Allegheny Ludlum Steel Corp filed Critical Allegheny Ludlum Steel Corp
Publication of EP0159796A1 publication Critical patent/EP0159796A1/fr
Withdrawn legal-status Critical Current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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • 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
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
    • 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
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B2031/206—Horizontal offset of work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/10—Horizontal bending of rolls

Definitions

  • This invention relates to a method of controlling roll deflection in a rolling mill.
  • the torque forces are the forces applied to rotate the workrolls during the rolling operation and the torque forces typically act in a generally horizontal direction opposite the direction of strip travel during rolling.
  • the roll separating forces typically act in a direction generally vertical and normal to the plane of the strip during rolling.
  • An additional practice is to use a backup roll having a sleeve wherein hydraulic pressure can be introduced beneath the sleeve to cause the backup roll to expand where required to counteract the roll separating forces. Also, various techniques have been used to vary the tension distribution across the strip to in turn vary the degree of reduction across the roll bite.
  • the present invention provides a method for use with a rolling mill having a pair of generally mutually opposed upper and lower workrolls defining a roll pass for material to be rolled therebetween and upper and lower backup rolls respectively for backing said upper and lower workrolls, said method being effective for continuously controlling and varying the deflection of said workrolls during a rolling operation to control the shape of the material being rolled by and passing between said workrolls, said method comprising selectively applying force near the ends of said workrolls to move said workrolls selectively toward and away from the direction of travel of said material passing between said workrolls.
  • the invention is a practice for workroll deflection which practice or method is used with a rolling mill having a pair of generally mutually opposed upper and lower workrolls defining a roll pass for the material, preferably in strip or plate form to be rolled by passage therethrough.
  • Upper and lower driven backup rolls are provided for driving and backing said upper and lower workrolls in the well known and conventional manner.
  • the method of the invention is effective for continuously controlling and varying the deflection of the workrolls during the rolling operation to control the shape of the material being rolled by counteracting the bending moment produced during rolling.
  • means are provided for applying force to selectively move the workrolls generally horizontally in a direction toward or away from the direction of strip travel. This may preferably be achieved by pushing the roll bearings forward or backward by the use of hydraulic piston-cylinder means. Consequently, in a conventional strip rolling operation the strip passes between the workrolls in a generally horizontal plane and the forces to move the workrolls are applied at the ends or bearings of the workrolls generally linearly to said horizontal plane and generally parallel to the direction of the strip passing between the workrolls during rolling.
  • the upper backup roll 2 is driven as by a conventional mill motor drive (not shown) to rotate this roll in the direction of the arrow.
  • the backup roll is in turn in driving engagement with the workroll 4 rolling strip 5 which is moving in the direction of the arrow.
  • the backup roll drives the workroll 4 to rotate it in the direction of the arrow.
  • the forces affecting roll bending or deflection are the roll-separating force, the pressure of the deforming metal strip and the torque force. These forces act in the directions as indicated by the arrows in the drawing.
  • the roll-separating force and the metal deformation forces have horizontal components and vertical components; the magnitude of the horizontal component increases as the workroll is moved in the direction of strip travel.
EP85301812A 1984-04-02 1985-03-15 Procédé de réglage du cintrage de cylindres Withdrawn EP0159796A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59578584A 1984-04-02 1984-04-02
US595785 1984-04-02

Publications (1)

Publication Number Publication Date
EP0159796A1 true EP0159796A1 (fr) 1985-10-30

Family

ID=24384668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85301812A Withdrawn EP0159796A1 (fr) 1984-04-02 1985-03-15 Procédé de réglage du cintrage de cylindres

Country Status (4)

Country Link
EP (1) EP0159796A1 (fr)
JP (1) JPS60213303A (fr)
KR (1) KR850007731A (fr)
BR (1) BR8501196A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220601A (en) * 1988-06-18 1990-01-17 Man Technologie Gmbh Rolling tube walls
US5119656A (en) * 1989-09-08 1992-06-09 Hitachi, Ltd. Rolling mill with offset work rolls positioned and controlled by support rolls and method of using same
EP1252941A1 (fr) * 2001-04-25 2002-10-30 SMS Demag AG Cage de laminoir pour matériau en bande
WO2022008486A1 (fr) * 2020-07-09 2022-01-13 Sms Group Gmbh Procédé et produit programme d'ordinateur pour calculer un programme de passes afin d'obtenir un procédé de laminage stable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870509A (en) * 1928-03-20 1932-08-09 John A Heiden Rolling mill
FR1156216A (fr) * 1955-06-15 1958-05-13 Laminoir quarto à froid
DE1652567A1 (de) * 1968-02-01 1971-04-15 Moeller & Neumann Gmbh Horizontale Biegesteuerung in Walzwerken mit mehr als zwei Walzen zur Balligkeitsregelung(crown control)

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870509A (en) * 1928-03-20 1932-08-09 John A Heiden Rolling mill
FR1156216A (fr) * 1955-06-15 1958-05-13 Laminoir quarto à froid
DE1652567A1 (de) * 1968-02-01 1971-04-15 Moeller & Neumann Gmbh Horizontale Biegesteuerung in Walzwerken mit mehr als zwei Walzen zur Balligkeitsregelung(crown control)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220601A (en) * 1988-06-18 1990-01-17 Man Technologie Gmbh Rolling tube walls
GB2220601B (en) * 1988-06-18 1992-06-10 Man Technologie Gmbh A method for automatically controlling spinning rolls
US5119656A (en) * 1989-09-08 1992-06-09 Hitachi, Ltd. Rolling mill with offset work rolls positioned and controlled by support rolls and method of using same
EP1252941A1 (fr) * 2001-04-25 2002-10-30 SMS Demag AG Cage de laminoir pour matériau en bande
WO2022008486A1 (fr) * 2020-07-09 2022-01-13 Sms Group Gmbh Procédé et produit programme d'ordinateur pour calculer un programme de passes afin d'obtenir un procédé de laminage stable

Also Published As

Publication number Publication date
JPS60213303A (ja) 1985-10-25
BR8501196A (pt) 1985-11-12
KR850007731A (ko) 1985-12-09

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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): AT BE CH DE FR GB IT LI LU NL SE

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

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18D Application deemed to be withdrawn

Effective date: 19860630

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LOVEJOY, PAUL THEODORE