US20030159487A1 - Method of operating a rolling line for wire or light sections - Google Patents

Method of operating a rolling line for wire or light sections Download PDF

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Publication number
US20030159487A1
US20030159487A1 US10/348,214 US34821403A US2003159487A1 US 20030159487 A1 US20030159487 A1 US 20030159487A1 US 34821403 A US34821403 A US 34821403A US 2003159487 A1 US2003159487 A1 US 2003159487A1
Authority
US
United States
Prior art keywords
rolling
line
stands
workpiece
wire
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.)
Abandoned
Application number
US10/348,214
Other languages
English (en)
Inventor
Klaus Hoffmann
Uwe Plociennik
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 Group GmbH
Original Assignee
SMS Meer GmbH
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 Meer GmbH filed Critical SMS Meer GmbH
Assigned to SMS MEER GMBH reassignment SMS MEER GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PLOCIENNIK, UWE, HOFFMANN, KLAUS
Publication of US20030159487A1 publication Critical patent/US20030159487A1/en
Abandoned 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
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2201/00—Special rolling modes
    • B21B2201/06—Thermomechanical rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2265/00—Forming parameters
    • B21B2265/22—Pass schedule
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/06—Mill spring
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B21B38/105—Calibrating or presetting roll-gap

Definitions

  • Our present invention relates to a method of operating a rolling mill line for the rolling of wire or light sections and, more particularly, to a method of controlling such a line upon the feed of a new stock with respect to the characteristics of its material and the inlet cross section.
  • Each of these stretches normally comprises a multiplicity of rolling mill stands each having at least two rolls between which the workpiece is deformed so as to alter its dimensions and/or cross sectional shape.
  • the intermediate rolling line especially comprises a large number of rolling mill stands which successively engage the workpiece and usually have adjustable rolls, the settings of which are controlled, for example, with respect to the rolling gap individually, i.e. for individual roll stands, so as to be varied for different inlet and outlet cross sections and different workpiece materials for the rolled wire.
  • the settings will depend on the loading values and modulus of elasticity of the individual mill stands in the sense that the loading characteristics of the mill stand are considered in calculating the setting of the rolling gap for the individual pair of rolls.
  • the principal object of the present invention to provide an improved method of controlling a rolling line whereby the cost of controlling that line in the case of a change of the wire diameter or workpiece material can be significantly reduced and the maintenance and service operation can be limited.
  • Another object of the invention is to provide a method of operating a rolling mill line of the type described at the outset for rolling wire and light sections, especially to minimize the efforts hitherto used in resetting the rolling stands of the intermediate stretch or line.
  • a further object of this invention is to provide a method of operating a rolling mill line, especially for the production of wire, whereby drawbacks of earlier systems are reduced or avoided.
  • the intermediate line can be located upstream of the finishing line and in that case it suffices to control the rolling gap of the first two or four mill stands and the last two or four mill stands immediately upstream of the finishing line.
  • the number of stands which are controlled and their position along the intermediate line are determined by the production palette (dimensions, composition and rolling product temperature, for example in the case of temperature controlled rolling).
  • the method of the invention can then comprise the steps of:
  • step (c) changing the workpiece passed in step (a) through the lines to a workpiece having at least one characterizing workpiece property different from those of the original workpiece, and modifying the rolling gap settings of only selected ones of the rolling stands of the intermediate line at locations along the intermediate line enabling tolerance-maintaining rolling of the workpiece through all of the stands of the intermediate line.
  • the invention thus eliminates the need for expensive motorized controls of those stands which need not be readjusted and limits the need for such controls only to the more limited number of stands at which the readjustment is effected.
  • FIGURE of the drawing is a diagram of a rolling mill for the rolling of wire in accordance with the invention.
  • the rolling mill shown in the drawing comprises a preliminary rolling line 10 with multiple rolling stands and temperature-controlled rolls for rolling the workpiece 11 to produce the prerolled product 12 .
  • the latter is fed to the intermediate rolling line 13 with a multiplicity of rolling stands 14 1 , 14 2 , 14 3 , 14 4 . . . 14 n and 14 n ⁇ 1 .
  • the additional rolling stands between the penultimate rolling stand 14 n ⁇ 1 and the rolling stand 14 4 have been represented only by a dated line.
  • the intermediate rolled product 15 is delivered directly to the finishing units of a finishing rolling line 16 having multiple rolling stands and temperature controlled rolls.
  • the system of the invention thus enables the expensive servomotor control of only the aforementioned selected stands for changeover of workpieces and eliminates the need for such control for the remainder of the stands of the intermediate lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Control Of Metal Rolling (AREA)
US10/348,214 2002-01-22 2003-01-21 Method of operating a rolling line for wire or light sections Abandoned US20030159487A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10202182.1 2002-01-22
DE10202182A DE10202182B4 (de) 2002-01-22 2002-01-22 Arbeitsverfahren zum Walzen von Draht oder Feineisen

Publications (1)

Publication Number Publication Date
US20030159487A1 true US20030159487A1 (en) 2003-08-28

Family

ID=7712704

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/348,214 Abandoned US20030159487A1 (en) 2002-01-22 2003-01-21 Method of operating a rolling line for wire or light sections

Country Status (3)

Country Link
US (1) US20030159487A1 (de)
EP (1) EP1329267A2 (de)
DE (1) DE10202182B4 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519118A (en) * 1982-10-26 1985-05-28 Kennecott Corporation Hot mill self-centering roll design
US5325697A (en) * 1991-05-06 1994-07-05 Morgan Construction Company Method and apparatus for continuously hot rolling ferrous long products
US6314781B1 (en) * 1999-04-15 2001-11-13 Morgan Construction Company Method of wire rolling and rolling mill

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831481A1 (de) * 1998-07-14 2000-01-20 Schloemann Siemag Ag Walzverfahren für stabförmiges Walzgut, insbesondere Stabstahl oder Draht

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519118A (en) * 1982-10-26 1985-05-28 Kennecott Corporation Hot mill self-centering roll design
US5325697A (en) * 1991-05-06 1994-07-05 Morgan Construction Company Method and apparatus for continuously hot rolling ferrous long products
US6314781B1 (en) * 1999-04-15 2001-11-13 Morgan Construction Company Method of wire rolling and rolling mill

Also Published As

Publication number Publication date
EP1329267A2 (de) 2003-07-23
DE10202182B4 (de) 2004-02-12
DE10202182A1 (de) 2003-08-07

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SMS MEER GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOFFMANN, KLAUS;PLOCIENNIK, UWE;REEL/FRAME:014023/0672;SIGNING DATES FROM 20030221 TO 20030225

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION