EP0081452B1 - Verfahren und Vorrichtung zum Kaltwalzen von Rohren, insbesondere grosser Längen - Google Patents

Verfahren und Vorrichtung zum Kaltwalzen von Rohren, insbesondere grosser Längen Download PDF

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Publication number
EP0081452B1
EP0081452B1 EP82730130A EP82730130A EP0081452B1 EP 0081452 B1 EP0081452 B1 EP 0081452B1 EP 82730130 A EP82730130 A EP 82730130A EP 82730130 A EP82730130 A EP 82730130A EP 0081452 B1 EP0081452 B1 EP 0081452B1
Authority
EP
European Patent Office
Prior art keywords
pipe
rotation
rolling
speed
driving apparatus
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.)
Expired
Application number
EP82730130A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081452A1 (de
Inventor
Horst Ing. Grad. Stinnertz
Fritz Dr. Ing. Zeunert
Klaus Rehag
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Priority to AT82730130T priority Critical patent/ATE13260T1/de
Publication of EP0081452A1 publication Critical patent/EP0081452A1/de
Application granted granted Critical
Publication of EP0081452B1 publication Critical patent/EP0081452B1/de
Expired 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
    • B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
    • B21B21/005—Pilgrim-step tube-rolling, i.e. pilger mills with reciprocating stand, e.g. driving the stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product

Definitions

  • the invention relates to a method for cold rolling pipes and a device for carrying out the method according to the preamble of claim 1 and claim 4.
  • a method and the device for carrying it out are prior art.
  • cold rolling of tubes at every rolling mills in particular cold pilger rolling mills a steady increase can be observed the h keitshuntn schaftlic to be rolled pipe lengths of economy.
  • the method according to the invention is proposed, which is characterized in that the cyclically uneven speed of the rolled tube is converted in a buffer zone deflecting the tube from the rolling direction into a constant outlet speed at which the tube is drawn off, the distance between the outlet chuck and the driving device is dimensioned such that the torsional stress on the rolled tube is always in the elastic range.
  • the tube be wound up concentrically after the buffer zone.
  • the tube must be rotated 45 ° to 90 ° per working cycle, the rotation normally taking place in the same direction.
  • rolling tests have shown that the pipe tolerances remain unsatisfactory if the direction of rotation is only rotated once or if the partial rotation angles are the same or only slightly different when the drum is rotated several times. It is therefore proposed according to another feature of the invention that the individual angles of rotation of the tube differ in each direction of rotation by at least 20 ° from one another.
  • the device for carrying out the method is characterized according to the invention by the characterizing features of claim 4, rolling tests have shown that this distance is approximately 40-50 meters with a pipe rotation of 90 ° per direction of rotation (with a pipe length of up to 250 meters).
  • the invention thus provides a stationary device which does not rotate about the pipe axis, which is installed at a suitable distance behind the rolling mill, which converts cyclically uneven rolling speed into a uniform transport speed of the pipe and which makes the rotation of the pipe behind this device zero.
  • a roller drive apparatus is preferably provided, the drive of which is infinitely variable as a function of the current rolling speed or of the current configuration of the buffer zone and which is able to pull out the rolled-out tube end.
  • this driver is designed as a bending device for reeling the pipes.
  • a bending device can also be connected downstream of the driving apparatus.
  • a sensible addition to the bending device according to the invention is a reel with a constant rotational speed, that of the one in the bending direction generated coil is given a uniform speed by friction, which corresponds to the transport speed of the driving apparatus.
  • the bending device and reel can also be replaced by a drum winder or a drum drawing machine.
  • the pipe length which is located behind the buffer zone, is dynamically uncoupled from the remaining pipe mass, so that the main mass of the pipe can be transported at a constant speed without pipe rotation and thus can no longer interfere with the rolling process.
  • the invention also ensures simple and safe pipe transport, and the pipes can be sawn, marked, checked and straightened in a simple manner. Considerable hall lengths can be saved by the possibility of the coiling according to the invention.
  • the bending roller set 5 forms the tube 2 arriving at a constant speed and without rotation into a coil 6, which is placed in a basket 7, the speed of which on the coil circumference corresponds to the transport speed of the driving apparatus 4.
  • the pipe circumference slides through a bend closed on three sides through the bend in the drive unit. After leaving the forming zone in the rolling mill, the pipe end is pulled off the drive unit so quickly that the basket can be changed until the new pipe enters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP82730130A 1981-11-19 1982-10-13 Verfahren und Vorrichtung zum Kaltwalzen von Rohren, insbesondere grosser Längen Expired EP0081452B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82730130T ATE13260T1 (de) 1981-11-19 1982-10-13 Verfahren und vorrichtung zum kaltwalzen von rohren, insbesondere grosser laengen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3146284 1981-11-19
DE3146284A DE3146284C2 (de) 1981-11-19 1981-11-19 Verfahren zum Abführen von kaltgewalzten Rohren, insbesondere großer Längen

Publications (2)

Publication Number Publication Date
EP0081452A1 EP0081452A1 (de) 1983-06-15
EP0081452B1 true EP0081452B1 (de) 1985-05-15

Family

ID=6146957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730130A Expired EP0081452B1 (de) 1981-11-19 1982-10-13 Verfahren und Vorrichtung zum Kaltwalzen von Rohren, insbesondere grosser Längen

Country Status (4)

Country Link
EP (1) EP0081452B1 (ja)
JP (1) JPS5890304A (ja)
AT (1) ATE13260T1 (ja)
DE (1) DE3146284C2 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127027A (ja) * 1983-12-12 1985-07-06 Nippon Steel Corp コイル状鋼管の製造設備
DE3527520C1 (de) * 1985-07-29 1986-11-20 Mannesmann AG, 4000 Düsseldorf Verfahren und Vorrichtung zum Pilgerwalzen, Ziehen und Aufwickeln von Rohr großer Länge in einem Arbeitsgang
EP0644272A3 (de) * 1993-09-17 1995-06-07 Mannesmann Ag Verfahren zum Herstellung von Rohren aus Kupfer oder Kupferlegierungen.
DE4344942A1 (de) * 1993-12-27 1995-06-29 Mannesmann Ag Vorrichtung zum Abführen von kaltgewalzten Rohren hinter einem Kaltpilgerwalzwerk
DE10144887C1 (de) * 2001-09-12 2003-04-24 Sms Meer Gmbh Verfahren zum Betreiben eines Kaltpilgerwalzwerks und Kaltpilgerwalzwerk
DE102009045640A1 (de) * 2009-10-13 2011-04-14 Sandvik Materials Technology Deutschland Gmbh Aufwickelvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD71086A (ja) *
GB1047375A (ja) * 1964-08-29 1900-01-01
GB1103952A (en) * 1965-03-08 1968-02-21 Imp Metal Ind Kynoch Ltd Improvements in or relating to methods and apparatus for reducing the thickness of metal
US3640112A (en) * 1969-05-12 1972-02-08 Republic Steel Corp Coiling method and apparatus
US3820367A (en) * 1972-10-30 1974-06-28 Nat Machinery Co Power feed and uncoiler for hot forging machines or the like
DE2652267A1 (de) * 1976-11-12 1978-05-18 Mannesmann Ag Verfahren zur herstellung von rohren grosser laenge durch schrittweises kaltwalzen
DD128573A1 (de) * 1976-12-07 1977-11-23 Gerhard Wiegel Synchronaufwickelvorrichtung fuer kaltgepilgerte rohre
GB1565436A (en) * 1977-10-10 1980-04-23 Gni I Pi Splav I Obrabot Tsvet Pilger rolling of tubes

Also Published As

Publication number Publication date
EP0081452A1 (de) 1983-06-15
JPS6239041B2 (ja) 1987-08-20
JPS5890304A (ja) 1983-05-30
ATE13260T1 (de) 1985-06-15
DE3146284A1 (de) 1983-05-26
DE3146284C2 (de) 1985-10-31

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