EP0937518A2 - Procédé de laminage pour au moins un premier et un deuxième brin laminé - Google Patents

Procédé de laminage pour au moins un premier et un deuxième brin laminé Download PDF

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Publication number
EP0937518A2
EP0937518A2 EP99103085A EP99103085A EP0937518A2 EP 0937518 A2 EP0937518 A2 EP 0937518A2 EP 99103085 A EP99103085 A EP 99103085A EP 99103085 A EP99103085 A EP 99103085A EP 0937518 A2 EP0937518 A2 EP 0937518A2
Authority
EP
European Patent Office
Prior art keywords
rolling
core
stand
roll
common
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Withdrawn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
EP99103085A
Other languages
German (de)
English (en)
Other versions
EP0937518A3 (fr
Inventor
Uwe Dipl.-Ing. Plociennik
Hans-Erich Dipl.-Ing. Schneider
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
SMS Demag 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, SMS Demag AG, Schloemann Siemag AG filed Critical SMS Schloemann Siemag AG
Publication of EP0937518A2 publication Critical patent/EP0937518A2/fr
Publication of EP0937518A3 publication Critical patent/EP0937518A3/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Withdrawn legal-status Critical Current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
    • B21B37/48—Tension control; Compression control
    • B21B37/50—Tension control; Compression control by looper control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/12—Arrangements of interest only with respect to provision for indicating or controlling operations
    • 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
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/20—Track of product

Definitions

  • the rolling cores are used in such rolling processes first rolled in a multi-stand rolling mill before starting occasionally and finally in its own, multi-stand rolling mill be rolled on.
  • the multi-core rolling mill is either a rough road or an intermediate road
  • the single-core rolling mill are either intermediate streets or finished streets.
  • the individual rolling strands are more or less uncorrelated rolled.
  • the piercing and leakage of the Rolling cores i.e. the introduction of the beginning of a rolling core into one common roll stand or the runout of the end of a roll core from the common rolling stand, therefore take place independently of one another.
  • the loops have a loop length that is between one Minimum value and a maximum value can fluctuate.
  • the minimum value is of course given that no loop at all is formed, so the minimum value is zero.
  • the maximum loop length is due to the construction of the loop-forming unit and given their mode of operation.
  • the loop length is set so that it is approximately equal to half the maximum value. After changes in actual loop length becomes the speed of the loop subordinate scaffold varies to get the loop length back on to set half the maximum value.
  • the maximum compensable Speed surge when piercing or running a roller core is therefore due to the maximum loop length and the given control dynamics certainly.
  • the object of the present invention is a method to indicate, by means of which given the control dynamics and the given maximum loop length, the greatest possible speed surge is compensable.
  • the object is achieved in that prior to known events, the lead to a change in the rolling speed, the loop length of the rolling cores is set to an event-optimized value becomes.
  • the loop length the first rolling wire before feeding the second rolling wire to the common rolling mill lowered to near its minimum value.
  • the loop control can now be used with reduced dynamics operated, the mechanical dimensions of the loop-forming Unit be reduced or the effective capacity of the Sling to be enlarged.
  • the control principle according to the invention therefore has disadvantages in subsequent laying of the bindings, the temperature control and the Diameter tolerance reduced or avoided.
  • the invention is in principle with all multi-core rolling mills applicable. However, it is particularly advantageous with two-wire Rolling mills applied because of the relative jumps in rolling speed are particularly large on a two-core rolling mill.
  • a first rolling core 1 and a second rolling core 2 first rolled in a multi-stand rolling mill. Only the first common roll stand 3 and the last common mill stand 4. The wire strands 1, 2 run from the last common roll stand 4 at a rolling speed v out.
  • each of the wire strands 1, 2 becomes its own rolling mill supplied, in which the rolling strands 1, 2 rolled on single core become.
  • the single-core rolling mills are usually multi-stand, in the figure only the first own frameworks 5 and the last own frameworks 6 are shown.
  • a loop-forming unit 7 is arranged in front of the first own roll stands 5 of each roll core 1, 2.
  • the loop-forming unit 7 forms a loop 8 in the respective roll core 1 or 2.
  • the length of the loop 8 can vary between 0 and a maximum value L max .
  • the maximum value L max is due to the design and operation. As a rule, the loop length L is set to half the maximum value L max in order to be able to compensate for speed fluctuations in both directions.
  • a material tracking system is assigned to the multi-core rolling mill. This has sensors 9, 10, by means of which they can be detected is when a roll core 1 or 2 passes the sensor 9 or 10.
  • Pilot control units 11, 12 are determined when the respective Roll core 1, 2 probably in the last common roll stand 4 enters or exits.
  • the pilot control units 11, 12 then control the first own roll stand 5 of the other roll core 2 or 1 in such a way that the loop length L of the rolling cores 2 and 1 respectively an optimized value is set.
  • a value between 10 and 15% of the maximum loop length L max has proven to be optimal.
  • the loop length L of the second roll core 2 is increased to at least 75%, optimally 85-90%, of the maximum loop length L max before the first roll core runs out of the last common roll stand 4 if the first roll core 1 is in front of the second roll core 2 runs out of the last common mill stand 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Feedback Control In General (AREA)
EP99103085A 1998-02-23 1999-02-17 Procédé de laminage pour au moins un premier et un deuxième brin laminé Withdrawn EP0937518A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807559A DE19807559A1 (de) 1998-02-23 1998-02-23 Walzverfahren für mindestens eine erste und eine zweite Walzader
DE19807559 1998-02-23

Publications (2)

Publication Number Publication Date
EP0937518A2 true EP0937518A2 (fr) 1999-08-25
EP0937518A3 EP0937518A3 (fr) 2002-11-27

Family

ID=7858652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103085A Withdrawn EP0937518A3 (fr) 1998-02-23 1999-02-17 Procédé de laminage pour au moins un premier et un deuxième brin laminé

Country Status (4)

Country Link
US (1) US6128938A (fr)
EP (1) EP0937518A3 (fr)
JP (1) JPH11314108A (fr)
DE (1) DE19807559A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6708077B2 (en) * 2002-08-16 2004-03-16 General Electric Company Furnace pacing for multistrand mill

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178116A (ja) * 1983-03-25 1984-10-09 Toshiba Corp 圧延設備のル−プ制御方法
JPS6061111A (ja) * 1983-09-12 1985-04-08 Toshiba Corp 線材圧延機の制御装置
JPS6092009A (ja) * 1983-10-25 1985-05-23 Toshiba Corp ル−プ位置制御方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1808822B2 (de) * 1968-11-14 1973-04-05 Moeller & Neumann Gmbh, 6670 St. Ingbert Kontinuierliche mehradrige walzenstrasse zur herstellung von stabfoermigem walzgut, insbesondere von draht in grossen bundgewichten
US3811304A (en) * 1972-09-20 1974-05-21 Gen Electric Looper controlled rolling mill
US5174142A (en) * 1991-08-16 1992-12-29 Pong David T Method and apparatus for guiding a rod to a slitter station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178116A (ja) * 1983-03-25 1984-10-09 Toshiba Corp 圧延設備のル−プ制御方法
JPS6061111A (ja) * 1983-09-12 1985-04-08 Toshiba Corp 線材圧延機の制御装置
JPS6092009A (ja) * 1983-10-25 1985-05-23 Toshiba Corp ル−プ位置制御方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 034 (M-357), 14. Februar 1985 (1985-02-14) -& JP 59 178116 A (TOSHIBA KK), 9. Oktober 1984 (1984-10-09) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 194 (M-403), 10. August 1985 (1985-08-10) -& JP 60 061111 A (TOSHIBA KK), 8. April 1985 (1985-04-08) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 235 (M-415), 21. September 1985 (1985-09-21) -& JP 60 092009 A (TOSHIBA KK), 23. Mai 1985 (1985-05-23) *

Also Published As

Publication number Publication date
DE19807559A1 (de) 1999-08-26
JPH11314108A (ja) 1999-11-16
US6128938A (en) 2000-10-10
EP0937518A3 (fr) 2002-11-27

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